RESUMEN

Salinity reduces feijão-caupi production, and the search for tolerant varieties becomes important within the agricultural context, as, in addition to being used in the field, they can be used in genetic improvement. The objective was to for a identify variety that is tolerant to salinity considering the physiological quality of seeds and seedling growth. A 2 × 4 factorial scheme was used, referring to the varieties Pingo-de-ouro and Coruja, and four electrical conductivities of water (0; 3.3; 6.6 and 9.9 dS m-1). The physiological quality of seeds and the growth of seedlings were analyzed, in addition to the cumulative germination. The Pingo-de-ouro variety showed no germination, length of the shoot and root, dry mass of the shoot and root compromised up to electrical conductivity of 6 dS m-1 in relation to 0.0 dS m-1. On the other hand, the Coruja variety showed reduced germination, increased shoot and root length. The creole variety Pingo-de-ouro proved to be tolerant to salinity.

Asunto(s)

RESUMEN

Exposure to the hight-fat diet may alter the control of food intake promoting hyperphagia and obesity. The objective of this study was to investigate the effects of this diet on dopamine receptors (drd1 and drd2), proopiomelanocortin (pomc), neuropeptideY (npy) genes expression, and preference food in adult rats. Wistar female rats were fed a hight-fat or control diet during pregnancy and lactation. The offspring were allocated into groups: Lactation Control (C) and High-fat (H). Post- weaning Control Control (CC), offspring of mothers C, fed a control diet after weaning; Control Hight-fat (CH), offspring of mothers C, fed a hight-fat diet after weaning; Hight-fat Control (HC), offspring of mothers H, fed with control diet after weaning; and Hight-fat Hight-fat (HH), offspring of mothers H, fed a H diet after weaning. The groups CH and HH presented greater expression of drd1 in comparison to the CC. The drd2 of CH and HC presented higher gene expression than did CC. HH presented higher pomc expression in comparison to the other groups. HC also presented greater expression in comparison to CH. The npy of HH presented greater expression in relation to CH and HC. HH and HC have had a higher preference for a high-fat diet at 102º lifes day. The high-fat diet altered the gene expression of the drd1, drd2, pomc and npy, and influencing the food preference for high-fat diet.(AU)

A exposição à dieta hiperlipídica pode alterar o controle da ingestão de alimentos, promovendo hiperfagia e obesidade. O objetivo deste estudo foi investigar os efeitos dessa dieta sobre a expressão gênica dos receptores de dopamina (drd1 e drd2), da proopiomelanocortina (pomc) e neuropeptídeo Y (npy), e preferência alimentar em ratos adultos. Ratas Wistar foram alimentadas com uma dieta hiperlipídica ou controle durante a gestação e lactação. Os descendentes foram alocados em grupos: Lactação Controle (C) e Hiperlipídica (H). Pós-desmame Controle Controle (CC), descendentes das genitoras do grupo controle e alimentados com dieta controle após o desmame; Controle Hiperlipídica (CH), descendentes das genitoras do grupo controle e alimentados com dieta hiperlipídica após o desmame; Hiperlipídica Controle (HC), descendentes das genitoras do grupo hiperlipídica e alimentados com dieta controle após o desmame; Hiperlipídica Hiperlipídica (HH), descendentes das genitoras do grupo hiperlipídica e alimentados com dieta hiperlipídica após o desmame. Os grupos CH e HH apresentaram maior expressão de drd1 em comparação ao CC. O drd2 de CH e HC apresentou maior expressão gênica que o CC. HH apresentou maior expressão de pomc em comparação com os outros grupos. O HC também apresentou maior expressão de pomc em comparação ao CH. O npy do HH apresentou maior expressão em relação ao CH e HC. HH e HC tiveram uma preferência maior por uma dieta rica em gordura no 102º dia de vida. A dieta hiperlipídica alterou a expressão gênica dos drd1, drd2, pomc e npy e influenciou na preferência alimentar pela dieta hiperlipídica.(AU)

Asunto(s)

RESUMEN

Exposure to the hight-fat diet may alter the control of food intake promoting hyperphagia and obesity. The objective of this study was to investigate the effects of this diet on dopamine receptors (drd1 and drd2), proopiomelanocortin (pomc), neuropeptideY (npy) genes expression, and preference food in adult rats. Wistar female rats were fed a hight-fat or control diet during pregnancy and lactation. The offspring were allocated into groups: Lactation - Control (C) and High-fat (H). Post-weaning ­ Control Control (CC), offspring of mothers C, fed a control diet after weaning; Control Hight-fat (CH), offspring of mothers C, fed a hight-fat diet after weaning; Hight-fat Control (HC), offspring of mothers H, fed with control diet after weaning; and Hight-fat Hight-fat (HH), offspring of mothers H, fed a H diet after weaning. The groups CH and HH presented greater expression of drd1 in comparison to the CC. The drd2 of CH and HC presented higher gene expression than did CC. HH presented higher pomc expression in comparison to the other groups. HC also presented greater expression in comparison to CH. The npy of HH presented greater expression in relation to CH and HC. HH and HC have had a higher preference for a high-fat diet at 102º life's day. The high-fat diet altered the gene expression of the drd1, drd2, pomc and npy, and influencing the food preference for high-fat diet.

A exposição à dieta hiperlipídica pode alterar o controle da ingestão de alimentos, promovendo hiperfagia e obesidade. O objetivo deste estudo foi investigar os efeitos dessa dieta sobre a expressão gênica dos receptores de dopamina (drd1 e drd2), da proopiomelanocortina (pomc) e neuropeptídeo Y (npy), e preferência alimentar em ratos adultos. Ratas Wistar foram alimentadas com uma dieta hiperlipídica ou controle durante a gestação e lactação. Os descendentes foram alocados em grupos: Lactação ­ Controle (C) e Hiperlipídica (H). Pós-desmame - Controle Controle (CC), descendentes das genitoras do grupo controle e alimentados com dieta controle após o desmame; Controle Hiperlipídica (CH), descendentes das genitoras do grupo controle e alimentados com dieta hiperlipídica após o desmame; Hiperlipídica Controle (HC), descendentes das genitoras do grupo hiperlipídica e alimentados com dieta controle após o desmame; Hiperlipídica Hiperlipídica (HH), descendentes das genitoras do grupo hiperlipídica e alimentados com dieta hiperlipídica após o desmame. Os grupos CH e HH apresentaram maior expressão de drd1 em comparação ao CC. O drd2 de CH e HC apresentou maior expressão gênica que o CC. HH apresentou maior expressão de pomc em comparação com os outros grupos. O HC também apresentou maior expressão de pomc em comparação ao CH. O npy do HH apresentou maior expressão em relação ao CH e HC. HH e HC tiveram uma preferência maior por uma dieta rica em gordura no 102º dia de vida. A dieta hiperlipídica alterou a expressão gênica dos drd1, drd2, pomc e npy e influenciou na preferência alimentar pela dieta hiperlipídica.

Asunto(s)

RESUMEN

Exposure to the hight-fat diet may alter the control of food intake promoting hyperphagia and obesity. The objective of this study was to investigate the effects of this diet on dopamine receptors (drd1 and drd2), proopiomelanocortin (pomc), neuropeptideY (npy) genes expression, and preference food in adult rats. Wistar female rats were fed a hight-fat or control diet during pregnancy and lactation. The offspring were allocated into groups: Lactation – Control (C) and High-fat (H). Post- weaning – Control Control (CC), offspring of mothers C, fed a control diet after weaning; Control Hight-fat (CH), offspring of mothers C, fed a hight-fat diet after weaning; Hight-fat Control (HC), offspring of mothers H, fed with control diet after weaning; and Hight-fat Hight-fat (HH), offspring of mothers H, fed a H diet after weaning. The groups CH and HH presented greater expression of drd1 in comparison to the CC. The drd2 of CH and HC presented higher gene expression than did CC. HH presented higher pomc expression in comparison to the other groups. HC also presented greater expression in comparison to CH. The npy of HH presented greater expression in relation to CH and HC. HH and HC have had a higher preference for a high-fat diet at 102º life’s day. The high-fat diet altered the gene expression of the drd1, drd2, pomc and npy, and influencing the food preference for high-fat diet.

A exposição à dieta hiperlipídica pode alterar o controle da ingestão de alimentos, promovendo hiperfagia e obesidade. O objetivo deste estudo foi investigar os efeitos dessa dieta sobre a expressão gênica dos receptores de dopamina (drd1 e drd2), da proopiomelanocortina (pomc) e neuropeptídeo Y (npy), e preferência alimentar em ratos adultos. Ratas Wistar foram alimentadas com uma dieta hiperlipídica ou controle durante a gestação e lactação. Os descendentes foram alocados em grupos: Lactação – Controle (C) e Hiperlipídica (H). Pós-desmame – Controle Controle (CC), descendentes das genitoras do grupo controle e alimentados com dieta controle após o desmame; Controle Hiperlipídica (CH), descendentes das genitoras do grupo controle e alimentados com dieta hiperlipídica após o desmame; Hiperlipídica Controle (HC), descendentes das genitoras do grupo hiperlipídica e alimentados com dieta controle após o desmame; Hiperlipídica Hiperlipídica (HH), descendentes das genitoras do grupo hiperlipídica e alimentados com dieta hiperlipídica após o desmame. Os grupos CH e HH apresentaram maior expressão de drd1 em comparação ao CC. O drd2 de CH e HC apresentou maior expressão gênica que o CC. HH apresentou maior expressão de pomc em comparação com os outros grupos. O HC também apresentou maior expressão de pomc em comparação ao CH. O npy do HH apresentou maior expressão em relação ao CH e HC. HH e HC tiveram uma preferência maior por uma dieta rica em gordura no 102º dia de vida. A dieta hiperlipídica alterou a expressão gênica dos drd1, drd2, pomc e npy e influenciou na preferência alimentar pela dieta hiperlipídica.

Asunto(s)

RESUMEN

Abstract Exposure to the hight-fat diet may alter the control of food intake promoting hyperphagia and obesity. The objective of this study was to investigate the effects of this diet on dopamine receptors (drd1 and drd2), proopiomelanocortin (pomc), neuropeptideY (npy) genes expression, and preference food in adult rats. Wistar female rats were fed a hight-fat or control diet during pregnancy and lactation. The offspring were allocated into groups: Lactation Control (C) and High-fat (H). Post-weaning Control Control (CC), offspring of mothers C, fed a control diet after weaning; Control Hight-fat (CH), offspring of mothers C, fed a hight-fat diet after weaning; Hight-fat Control (HC), offspring of mothers H, fed with control diet after weaning; and Hight-fat Hight-fat (HH), offspring of mothers H, fed a H diet after weaning. The groups CH and HH presented greater expression of drd1 in comparison to the CC. The drd2 of CH and HC presented higher gene expression than did CC. HH presented higher pomc expression in comparison to the other groups. HC also presented greater expression in comparison to CH. The npy of HH presented greater expression in relation to CH and HC. HH and HC have had a higher preference for a high-fat diet at 102º lifes day. The high-fat diet altered the gene expression of the drd1, drd2, pomc and npy, and influencing the food preference for high-fat diet.

Resumo A exposição à dieta hiperlipídica pode alterar o controle da ingestão de alimentos, promovendo hiperfagia e obesidade. O objetivo deste estudo foi investigar os efeitos dessa dieta sobre a expressão gênica dos receptores de dopamina (drd1 e drd2), da proopiomelanocortina (pomc) e neuropeptídeo Y (npy), e preferência alimentar em ratos adultos. Ratas Wistar foram alimentadas com uma dieta hiperlipídica ou controle durante a gestação e lactação. Os descendentes foram alocados em grupos: Lactação Controle (C) e Hiperlipídica (H). Pós-desmame Controle Controle (CC), descendentes das genitoras do grupo controle e alimentados com dieta controle após o desmame; Controle Hiperlipídica (CH), descendentes das genitoras do grupo controle e alimentados com dieta hiperlipídica após o desmame; Hiperlipídica Controle (HC), descendentes das genitoras do grupo hiperlipídica e alimentados com dieta controle após o desmame; Hiperlipídica Hiperlipídica (HH), descendentes das genitoras do grupo hiperlipídica e alimentados com dieta hiperlipídica após o desmame. Os grupos CH e HH apresentaram maior expressão de drd1 em comparação ao CC. O drd2 de CH e HC apresentou maior expressão gênica que o CC. HH apresentou maior expressão de pomc em comparação com os outros grupos. O HC também apresentou maior expressão de pomc em comparação ao CH. O npy do HH apresentou maior expressão em relação ao CH e HC. HH e HC tiveram uma preferência maior por uma dieta rica em gordura no 102º dia de vida. A dieta hiperlipídica alterou a expressão gênica dos drd1, drd2, pomc e npy e influenciou na preferência alimentar pela dieta hiperlipídica.

RESUMEN

Exposure to the hight-fat diet may alter the control of food intake promoting hyperphagia and obesity. The objective of this study was to investigate the effects of this diet on dopamine receptors (drd1 and drd2), proopiomelanocortin (pomc), neuropeptideY (npy) genes expression, and preference food in adult rats. Wistar female rats were fed a hight-fat or control diet during pregnancy and lactation. The offspring were allocated into groups: Lactation - Control (C) and High-fat (H). Post-weaning - Control Control (CC), offspring of mothers C, fed a control diet after weaning; Control Hight-fat (CH), offspring of mothers C, fed a hight-fat diet after weaning; Hight-fat Control (HC), offspring of mothers H, fed with control diet after weaning; and Hight-fat Hight-fat (HH), offspring of mothers H, fed a H diet after weaning. The groups CH and HH presented greater expression of drd1 in comparison to the CC. The drd2 of CH and HC presented higher gene expression than did CC. HH presented higher pomc expression in comparison to the other groups. HC also presented greater expression in comparison to CH. The npy of HH presented greater expression in relation to CH and HC. HH and HC have had a higher preference for a high-fat diet at 102º life's day. The high-fat diet altered the gene expression of the drd1, drd2, pomc and npy, and influencing the food preference for high-fat diet.

Asunto(s)

RESUMEN

Feed formulation using linear programming consists of determining the mixture of feedstuffs required to meet pre-established animal nutritional requirements at the lowest cost. On the other hand, with the use of non-linear programming, it is possible to define nutritional requirements at the time of formulation, aiming at maximum profit. The objective of the present study was to compare feeds formulated using linear and non-linear programming in terms of live performance and internal and external egg quality of commercial laying hens. A total of 288 Hisex® White laying hens, 1.540 ± 0.128 g body weight, were evaluated from 33 to 45 weeks of age. Hens were distributed in a completely randomized block design, including six treatments with six replicates of eight birds each. Three treatments consisted of feeds formulated using linear programming and based on the nutritional requirements of Rostagno et al. (2011), of the genetic strain manual, or mathematical models to maximize performance. The other three treatments consisted of feeds formulated using non-linear programming considering typical, favorable, or unfavorable market scenarios. Data were submitted to analysis of variance, and in case of significance (p 0.05), means were grouped using the Scott-Knott test (5%).The treatments did not influence (p>0.05) Haugh unit, albumen height, or external egg quality parameters. Treatment effects (p 0.05) on yolk weight, albumen weight, yolk color, yolk percentage, albumen percentage, and performance parameters were described. In general, feeds formulated using linear programming and based on nutritional requirements obtained by mathematical models and the genetic strain manual promoted better performance results because the feeds were nutritionally denser. However, the treatments that maximized live performance did not result in higher profitability, which was obtained with the diet formulated for a favorable market scenario using non-linear programming.

Asunto(s)

RESUMEN

Feed formulation using linear programming consists of determining the mixture of feedstuffs required to meet pre-established animal nutritional requirements at the lowest cost. On the other hand, with the use of non-linear programming, it is possible to define nutritional requirements at the time of formulation, aiming at maximum profit. The objective of the present study was to compare feeds formulated using linear and non-linear programming in terms of live performance and internal and external egg quality of commercial laying hens. A total of 288 Hisex® White laying hens, 1.540 ± 0.128 g body weight, were evaluated from 33 to 45 weeks of age. Hens were distributed in a completely randomized block design, including six treatments with six replicates of eight birds each. Three treatments consisted of feeds formulated using linear programming and based on the nutritional requirements of Rostagno et al. (2011), of the genetic strain manual, or mathematical models to maximize performance. The other three treatments consisted of feeds formulated using non-linear programming considering typical, favorable, or unfavorable market scenarios. Data were submitted to analysis of variance, and in case of significance (p 0.05), means were grouped using the Scott-Knott test (5%).The treatments did not influence (p>0.05) Haugh unit, albumen height, or external egg quality parameters. Treatment effects (p 0.05) on yolk weight, albumen weight, yolk color, yolk percentage, albumen percentage, and performance parameters were described. In general, feeds formulated using linear programming and based on nutritional requirements obtained by mathematical models and the genetic strain manual promoted better performance results because the feeds were nutritionally denser. However, the treatments that maximized live performance did not result in higher profitability, which was obtained with the diet formulated for a favorable market scenario using non-linear programming.(AU)

Asunto(s)

RESUMEN

The objective of this study was to evaluate the effects of dietary nutrient levels on performance, carcass yield, commercial cuts, digestibility and economical viability of broilers from 1 to 42 days of age. During the experiment, 180 COBB 500™ chicks were housed in metal batteries and subjected to a completely randomized design in a 2x3 factorial arrangement, of two sexes and three diets (male, female and mixed), totaling 6 treatments and 6 repetitions of 5 birds each. Data were subjected to statistical analysis and the means were compared using the Tukey test, at 5% probability. The results indicate the effect of sex on performance and commercial cuts, except for breast and thigh fillets, in which males and females showed similar results when given the mixed diet. The influence of the nutritional levels on performance, digestibility and commercial cuts was observed, in which the female diet showed the highest results for feed intake, body weight and weight gain, in addition to greater retention of protein and crude energy. For drumstick and abdominal fat yield, the highest values were obtained using the mixed diet and the female diet, and the lowest values were obtained using the male diet. Regarding economic viability, the female diet showed the highest return per unit of Real (R$) spent on feed. Therefore, these data prove that the female diet had a positive effect when provided to both sexes, and it may be a promising alternative for its application at the production level.

Asunto(s)

RESUMEN

The objective of this study was to evaluate the effects of dietary nutrient levels on performance, carcass yield, commercial cuts, digestibility and economical viability of broilers from 1 to 42 days of age. During the experiment, 180 COBB 500™ chicks were housed in metal batteries and subjected to a completely randomized design in a 2x3 factorial arrangement, of two sexes and three diets (male, female and mixed), totaling 6 treatments and 6 repetitions of 5 birds each. Data were subjected to statistical analysis and the means were compared using the Tukey test, at 5% probability. The results indicate the effect of sex on performance and commercial cuts, except for breast and thigh fillets, in which males and females showed similar results when given the mixed diet. The influence of the nutritional levels on performance, digestibility and commercial cuts was observed, in which the female diet showed the highest results for feed intake, body weight and weight gain, in addition to greater retention of protein and crude energy. For drumstick and abdominal fat yield, the highest values were obtained using the mixed diet and the female diet, and the lowest values were obtained using the male diet. Regarding economic viability, the female diet showed the highest return per unit of Real (R$) spent on feed. Therefore, these data prove that the female diet had a positive effect when provided to both sexes, and it may be a promising alternative for its application at the production level.(AU)

Asunto(s)

RESUMEN

Objetivou-se avaliar os efeitos do extrato de própolis (LLOSC2) sobre o comportamento ingestivo e os parâmetros sanguíneos em cordeiros alimentados com dieta concentrada. Foram utilizados quatro cordeiros machos, castrados, sem raça definida e com peso médio inicial de 32±1,92kg, mantidos em gaiolas metabólicas individuais durante todo o período experimental. O delineamento experimental foi em quadrado latino 4x4, com quatro animais, quatro dietas e quatro períodos experimentais. As dietas diferiram em relação à adição ou não de extratos de própolis à ração. As dietas testadas diferiam na adição de zero (controle), 1(88,16mg/g de flavonoides), duas (176,32mg/g de flavonoides) ou três (264,48mg/g de flavonoides) doses de aditivo à base de extrato de própolis LLOSC2. A dieta tinha relação volumoso:concentrado de 40:60 e foi formulada para ganhos de 250g. A ração concentrada era composta de milho e farelo de soja. O comportamento ingestivo dos animais foi observado por 24 horas, divididas em quatro períodos de seis horas. As coletas de sangue eram realizadas no último dia do período. Não houve efeito das doses LLOSC2 sobre o tempo despendido em alimentação, ruminação, ócio e ingestão de água. A duração do ciclo ruminativo foi maior nos animais que receberam duas doses de LLOSC2, e o número de movimentos mastigatórios também tendeu a aumentar no período que compreendia das 13 às 19h. Já a dieta contendo uma dose de LLOSC2 aumentou a duração da ruminação do bolo bem como o seu número total de mastigações no período de uma a sete horas. Houve uma diminuição nos níveis séricos de cortisol com a adição de três doses de LLOSC2. O hemograma, o leucograma, o perfil bioquímico e as imunoglobulinas não foram afetados pela inclusão das doses de LLSOC2. A administração de extrato de própolis LLOSC2 à dieta de ovinos não afetou seu comportamento ingestivo, os parâmetros hematológicos, bioquímicos e imunológicos estudados.(AU)

The objective of this study was to evaluate the effects of propolis extract (LLOS 2) on feeding behavior and blood parameters in lambs fed concentrate diet. Four male lambs were castrated, mongrel and average weight of 32±1.92kg, kept in individual metabolic cages throughout the trial period. The experimental design was a Latin square 4 x 4 with four animals, four treatments and four experimental periods. The diets differed according to addition or not of propolis extracts to feed. The experimental diets differed in addition to zero (control), 1 (88.16mg/g flavonoids) 2 (176.32mg/g flavonoids) or 3 (264.48mg/g flavonoids) Additive doses based on LLOSC2 propolis extract. The diet had a forage:concentrate ratio of 40:60 and was formulated to 250g gains. The concentrate ration was composed based on corn and soybean meal. The feeding behavior of the animals were observed for 24 hours, divided into four periods of 6 hours. Blood collections were made on the last day of the period. There was no effect of LLOSC2 doses on time spent eating, ruminating, leisure and water intake. The duration of the ruminative cycle was higher in animals that received two doses of LLOSC2 and the number of chewing movements also tended to increase in the period comprised from 13 to 19h. Since the diet containing a dose of LLOSC2, increased duration of rumination cake as well as its total number of chewing in the period of 1 to 7 hours. There was a decrease in serum cortisol with the addition of three doses of LLOSC2. The blood count, white blood cell count, biochemical profile and immunoglobulins were not affected by the inclusion of doses of LLSOC2. Administration of LLOSC2 propolis extract the sheep diet did not affect their feeding behavior, hematological, biochemical and immunological studies.(AU)

Asunto(s)

RESUMEN

Objetivou-se avaliar os efeitos do extrato de própolis (LLOSC2) sobre o comportamento ingestivo e os parâmetros sanguíneos em cordeiros alimentados com dieta concentrada. Foram utilizados quatro cordeiros machos, castrados, sem raça definida e com peso médio inicial de 32±1,92kg, mantidos em gaiolas metabólicas individuais durante todo o período experimental. O delineamento experimental foi em quadrado latino 4x4, com quatro animais, quatro dietas e quatro períodos experimentais. As dietas diferiram em relação à adição ou não de extratos de própolis à ração. As dietas testadas diferiam na adição de zero (controle), 1(88,16mg/g de flavonoides), duas (176,32mg/g de flavonoides) ou três (264,48mg/g de flavonoides) doses de aditivo à base de extrato de própolis LLOSC2. A dieta tinha relação volumoso:concentrado de 40:60 e foi formulada para ganhos de 250g. A ração concentrada era composta de milho e farelo de soja. O comportamento ingestivo dos animais foi observado por 24 horas, divididas em quatro períodos de seis horas. As coletas de sangue eram realizadas no último dia do período. Não houve efeito das doses LLOSC2 sobre o tempo despendido em alimentação, ruminação, ócio e ingestão de água. A duração do ciclo ruminativo foi maior nos animais que receberam duas doses de LLOSC2, e o número de movimentos mastigatórios também tendeu a aumentar no período que compreendia das 13 às 19h. Já a dieta contendo uma dose de LLOSC2 aumentou a duração da ruminação do bolo bem como o seu número total de mastigações no período de uma a sete horas. Houve uma diminuição nos níveis séricos de cortisol com a adição de três doses de LLOSC2. O hemograma, o leucograma, o perfil bioquímico e as imunoglobulinas não foram afetados pela inclusão das doses de LLSOC2. A administração de extrato de própolis LLOSC2 à dieta de ovinos não afetou seu comportamento ingestivo, os parâmetros hematológicos, bioquímicos e imunológicos estudados.(AU)

The objective of this study was to evaluate the effects of propolis extract (LLOS 2) on feeding behavior and blood parameters in lambs fed concentrate diet. Four male lambs were castrated, mongrel and average weight of 32±1.92kg, kept in individual metabolic cages throughout the trial period. The experimental design was a Latin square 4 x 4 with four animals, four treatments and four experimental periods. The diets differed according to addition or not of propolis extracts to feed. The experimental diets differed in addition to zero (control), 1 (88.16mg/g flavonoids) 2 (176.32mg/g flavonoids) or 3 (264.48mg/g flavonoids) Additive doses based on LLOSC2 propolis extract. The diet had a forage:concentrate ratio of 40:60 and was formulated to 250g gains. The concentrate ration was composed based on corn and soybean meal. The feeding behavior of the animals were observed for 24 hours, divided into four periods of 6 hours. Blood collections were made on the last day of the period. There was no effect of LLOSC2 doses on time spent eating, ruminating, leisure and water intake. The duration of the ruminative cycle was higher in animals that received two doses of LLOSC2 and the number of chewing movements also tended to increase in the period comprised from 13 to 19h. Since the diet containing a dose of LLOSC2, increased duration of rumination cake as well as its total number of chewing in the period of 1 to 7 hours. There was a decrease in serum cortisol with the addition of three doses of LLOSC2. The blood count, white blood cell count, biochemical profile and immunoglobulins were not affected by the inclusion of doses of LLSOC2. Administration of LLOSC2 propolis extract the sheep diet did not affect their feeding behavior, hematological, biochemical and immunological studies.(AU)

Asunto(s)

RESUMEN

INTRODUCTION: Viscosupplementation can improve function in haemophilia patients. Viscosupplementation results can be improved by prior joint lavage and triamcinolone administration. AIM: To objectively assess whether viscosupplementation and associated triamcinolone use in patients with severe haemophilic arthropathy following joint lavage improves force and balance and reduces bleeding events. METHODS: Fourteen patients with haemophilic knee arthritis with and without the involvement of other joints underwent joint lavage and subsequent injections of Hylan G-F20 and triamcinolone into all affected joints. Patients were evaluated with NeuroCom® force and balance platforms using the step-up-and-over task (STP), sit-to-stand test (STS), one-leg stance (UNI) and weight-bearing squat (WBS) at baseline and at 1, 3, 6 and 12 months after the procedure. Bleeding events in the year prior to and the year after the procedure were analysed. RESULTS: Sixteen knees, 15 ankles, eight elbows and one shoulder were treated. The STP results indicated improvements in the lift-up indices (right leg) at all time points evaluated (P = 0.03). The STS results revealed coupled improvement in weight transfer and the rising index for up to a year (P = 0.02). Balance (UNI) with eyes open or closed improved in all evaluations. The WBS results revealed improvements at all degrees of flexion (0, P = 0.003; 30°, P = 0.001; 60°, P < 0.001 and 90°, P < 0.001). The numbers of total and traumatic bleeding events were reduced (P = 0.04). CONCLUSION: Joint lavage followed by injections of triamcinolone and Hylan G-F20 improved balance, function and bleeding events in severe haemophilic arthropathy patients.

Asunto(s)

RESUMEN

O enriquecimento ambiental é um princípio de manejo animal que visa incrementar os cuidados com os animais cativos através de intervenções no recinto onde o animal está alojado, com a intenção de promover os estímulos necessários ao bem-estar psicológico e fisiológico, aumentando a qualidade de vida dos animais. O enriquecimento pode ser alimentar, olfativo ou mobiliário (intervenções no espaço onde vive o animal), e o conhecimento prévio da história natural da espécie a ser trabalhada é essencial para seu sucesso. Já bastante utilizado e com bons resultados em mamíferos e aves, o enriquecimento ambiental foi pouquíssimo trabalhado com serpentes, animais que respondem pouco aos estímulos e cujo comportamento dificulta e mensuração da resposta a esses estímulos. O Museu Biológico do Instituto Butantan tem como objetivos a divulgação científica,educação ambiental e a pesquisa por meio da exposição de animais que compõem a fauna herpetológica do Brasil. A espécie escolhida para este trabalho foi a S. pullatus, serpente arborícola de grande porte, de coloração amarelo e preta, que geralmente atrai a atenção do público. Este trabalho contempla a área de pesquisa em herpetologia, além de tentar proporcionar melhores condições às serpentes. O enriquecimento ambiental no recinto das S. pullatus trouxe resultados positivos, oferecendo locais apropriados para repouso às serpentes, e maiores opções de locomoção, além de tornar o recinto mais atrativo ao público.

Asunto(s)

RESUMEN

There has been a great evolution and improvement in the nutrition of poultry and lysine has been used the reference amino acid to increase animal protein deposition. Therefore, a meta-analysis was performed with the objective of studying the effect of different dietary lysine levels on the performance and carcass yield of broiler chickens. In total, 21 studies published in Brazil since 1999 were included. Bird performance considered daily weight gain (178 observations) and feed conversion ratio (188 observations) results. Carcass quality was evaluated relative to carcass yield (24 observations), abdominal fat (24 observations) and breast meat yield (30 observations). Data were checked for normality and were submitted to analysis of variance. Weight gain and carcass yield increased with the addition of 1.05% of lysine to the diet, whereas feed conversion ratio and abdominal fat were reduced as dietary lysine concentration increased. The results, therefore, indicate that lysine is essential in bird nutrition and significantly affects bird performance and carcass yield.

Asunto(s)

RESUMEN

There has been a great evolution and improvement in the nutrition of poultry and lysine has been used the reference amino acid to increase animal protein deposition. Therefore, a meta-analysis was performed with the objective of studying the effect of different dietary lysine levels on the performance and carcass yield of broiler chickens. In total, 21 studies published in Brazil since 1999 were included. Bird performance considered daily weight gain (178 observations) and feed conversion ratio (188 observations) results. Carcass quality was evaluated relative to carcass yield (24 observations), abdominal fat (24 observations) and breast meat yield (30 observations). Data were checked for normality and were submitted to analysis of variance. Weight gain and carcass yield increased with the addition of 1.05% of lysine to the diet, whereas feed conversion ratio and abdominal fat were reduced as dietary lysine concentration increased. The results, therefore, indicate that lysine is essential in bird nutrition and significantly affects bird performance and carcass yield.(AU)

Asunto(s)

RESUMEN

The aim of this study was to evaluate the effect of swimming exercise, without overloading, on the biomechanical parameters of the calcaneal tendon of rats. 27 male Wistar rats (70 days) were distributed randomly into 2 groups, Control Group (CG; n=15) with restricted movements inside the cage and Swimming Group (SG; n=12), subjected to exercise training in a tank with a water temperature of 30±1°C, for 1 h/day, 5 days/week for 8 weeks. All animals were kept in a reversed light/dark cycle of 12 h with access to food and water ad libitum. After that, they were anesthetized and had their calcaneus tendons collected from their left rear paws. The tendon was submitted to a mechanical test on a conventional test machine. From the stress vs. strain curve, the biomechanical data were analyzed. For the statistical analysis, the Student-T test was used (p<0.05). Of the variables examined, the maximum tension (p=0.009), maximum force (p=0.03), energy of deformation/tendon cross sectional area (p=0.017) and elastic modulus of the tendon (p=0.013) showed positive outcomes in SG. There was no difference in the other parameters. The results indicate that the swimming exercise training, without overloading, was an important stimulus for improving the biomechanical parameters and structural properties of the calcaneal tendon.

Asunto(s)

RESUMEN

Microcystins (MCYSTs) are very stable cyclic peptidic toxins produced by cyanobacteria. Their effects on hepatic tissue have been studied extensively, and they are considered to be a potent hepatotoxin. However, several effects of MCYST on other organs have also been described, but generally in studies using higher doses of MCYST. In the present work, we investigated the effect of a single sublethal dose of MCYST-LR (55 µg/kg) in Wistar rats and analyzed different aspects that influenced renal physiology, including toxin accumulation, excretion, histological morphology, biochemical responses and oxidative damage in the kidney. After 24 h of exposure to MCYST-LR, it was possible to observe an increased glomerular filtration rate (6.28 ± 1.56 vs 2.16 ± 0.48 µl/min per cm(2)) compared with the control group. Increase of interstitial space and collagen deposition corresponded to a fibrotic response to the increased production of reactive oxygen species. The observed decrease of Na(+) reabsorption was due to inhibition of the activity of both Na(+) pumps in proximal tubules cells. We suggested that this modulation is mediated by the effect of MCYST as a phosphatase protein inhibitor that maintains the sustained kinase-mediated regulatory phosphorylation of the ATPases. The observed alteration of Na(+) active transporters lead to damage of renal function, since are involved in regulation of water and solute reabsorption in proximal tubules. The results of this report reinforce the importance of understanding the molecular effects of a single sublethal dose of MCYST-LR, which, in this study, was responsible for macro-alterations found in the renal parenchyma and renal physiology in rats.

Asunto(s)

RESUMEN

OBJECTIVES: In this study, the hypothesis that tennis players with scapular dyskinesia present a smaller subacromial space than non-athletes was investigated. Additionally, the correlation between the size of the subacromial space and abnormalities in scapular movement during arm abduction was studied. DESIGN: Cross-sectional study. PARTICIPANTS: A total of 53 elite tennis players and 20 control participants were enrolled in the study. Participation was restricted to elite-level, junior tennis players who had no current shoulder pain or history of shoulder injuries. INTERVENTION: Each individual was examined for scapular dyskinesia by a single physician and by ultrasound, with the results analysed in a blind fashion by a single radiologist. RESULTS: 43.4% of the tennis players and 20% of control participants presented with scapular dyskinesia. Of the 106 shoulders evaluated, 39.6% of tennis players and 10% of control participants presented with scapular dyskinesia in the clinical examination (p = 0.005). Ultrasonographic measurements demonstrated that tennis players presented statistically smaller subacromial spaces compared with control participants (p<0.001). A decrease in the subacromial space was observed in tennis players when the shoulder was raised from 0 degrees to 60 degrees of abduction; however, dyskinesia-afflicted athletes demonstrated a significantly greater decrease following this movement (19.3 vs 13.8 mm, p = 0.002). CONCLUSIONS: The results of this study demonstrated that tennis players with scapular dyskinesia present a smaller subacromial space than control participants. Furthermore, when the shoulder was analysed dynamically, moving from neutral abduction to 60 degrees of elevation, the tennis players with scapular dyskinesia presented a greater reduction in the subacromial space compared with unaffected athletes.

Asunto(s)

RESUMEN

Stress fractures are common in athletes, and their incidence in sport is estimated at 2-4%. A case is reported of a stress fracture of the sacrum in an amateur tennis player. The patient was treated with rest and physiotherapy, focusing on stretching programmes and analgesic treatments, followed by an educational programme of tennis training and muscle strengthening. This appears to be the first report of this pathology in a tennis player.

Asunto(s)