RESUMO

Eggs are considered one of the most complete foods, by providing essential health, such as protein, vitamins and mineral elements. Reduction of internal egg quality during storage that is related to the loss of water and carbon dioxide, is proportional to the elevation of temperature. The experiment was conducted to evaluate the effect of storage time on physical quality of organic and conventional eggs from hens Isa Brown, collected at 46 weeks of age. One hundred fifty eggs were used for the analysis of the percentage of weight loss, Haugh unit, percentage of yolk and albumen, with 15 repetitions for different storage periods, corresponding to 0, 7, 14, 21 and 28 days (Table 1). The results obtained were subjected to analysis of variance using the Statistical Package SISVAR and means were compared by Tukey test at 5% significance.No significant statistical differences about the percentage of weight loss of eggs (P>0.05) between the two systems were observed, unlike Haugh units, percent of yolk and albumen showed difference b (P 0.05) between treatments. It was observed that in both systems, there was a reduction in the percentage of albumen, while increased yolk percentage, with best results observed in the eggs from organic system. It can be concluded that the physical quality of eggs from the organic system were higher than those obtained in conventional system eggs.

O artigo não apresenta resumo em português.

RESUMO

The egg is known as one of the most complete foods because it has a rich source of nutrients, with an excellent balance of fats, carbohydrates, minerals and vitamins, and especially proteins, being the second best source of protein available for human consumption, second only into breast milk. However, it is an ideal for growth of pathogenic microorganisms and because it is a product of animal origin, such as meat and its derivatives means, is a highly perishable food and can quickly lose its quality. The eggs are important constituents of the diet, may help to improve the diet of the poor. In shell eggs are considered resistant to lipid oxidation, but studies have shown that commercial egg yolk lipids undergo oxidation during storage. Organic eggs are produced by hens receiving a diet 100% organic, grown in conditions that value their well-being and natural behavior, with some prohibited practices such as beak trimming and confinement in cages. The experiment was conducted to evaluate the effect of storage time on lipid oxidation of egg yolks organic and conventional eggs from hens Isa Brown, collected at 46 weeks of age. Eggs were collected and stored in plastic trays under ambient temperature conditions (25C) using 100 eggs for analysis of the process of TBARS with ten repetitions for different storage periods, corresponding to 0, 7, 14, 21 and 28 days (Table 1). The result

O artigo não possui resumo em português.

RESUMO

Aiming to evaluate the effect of plasma spray dried (PSD) on the performance of super early weaned piglets, an experiment was carried out in the Pigs farming sector of the Institute of Animal Science and Pasture, at Nova Odessa, São Paulo State. Fifty six piglets were used, homogeneous as for the lineage, weighing 3.87±0.65kg approximately with average age of 14 days, distributed in a completely randomize experimental design with four treatments, seven replicates and two animals per experimental unit. It was tested four levels of plasma inclusion on piglets diets into two consecutive periods, 14 to 28 days of age (first period); 29 to 42 days of age (second period). The plasma levels utilized were 0%, 2%, 4% and 6% for the first period and 0%, 1%, 2% and 3% for the second period. Into the third period (42 to 56 days of age) all the piglets were feed with no PSD. The performance of the piglets was evaluated by biweekly weighing and in the last day of experiment, when the age of allotment was equal to 56 days. The analyzed variables aiming to evaluate the performance of the animals were the average daily feed intake (DFI), average daily weight gain (ADG), and feed conversion (FC). No significant differences were observed (P>0.05) for weight gain, food intake and feed conversion. As a conclusion to the carried out experiment, it is suggested that animals fed with plasma spray

O artigo não apresenta resumo em português.

RESUMO

Aiming to evaluate the effect of plasma spray dried (PSD) on the performance of super early weaned piglets, an experiment was carried out in the Pigs farming sector of the Institute of Animal Science and Pasture, at Nova Odessa, São Paulo State. Fifty six piglets were used, homogeneous as for the lineage, weighing 3.87±0.65kg approximately with average age of 14 days, distributed in a completely randomize experimental design with four treatments, seven replicates and two animals per experimental unit. It was tested four levels of plasma inclusion on piglets diets into two consecutive periods, 14 to 28 days of age (first period); 29 to 42 days of age (second period). The plasma levels utilized were 0%, 2%, 4% and 6% for the first period and 0%, 1%, 2% and 3% for the second period. Into the third period (42 to 56 days of age) all the piglets were feed with no PSD. The performance of the piglets was evaluated by biweekly weighing and in the last day of experiment, when the age of allotment was equal to 56 days. The analyzed variables aiming to evaluate the performance of the animals were the average daily feed intake (DFI), average daily weight gain (ADG), and feed conversion (FC). No significant differences were observed (P>0.05) for weight gain, food intake and feed conversion. As a conclusion to the carried out experiment, it is suggested that animals fed with plasma spray

O artigo não apresenta resumo em português.

RESUMO

The egg is known as one of the most complete foods because it has a rich source of nutrients, with an excellent balance of fats, carbohydrates, minerals and vitamins, and especially proteins, being the second best source of protein available for human consumption, second only into breast milk. However, it is an ideal for growth of pathogenic microorganisms and because it is a product of animal origin, such as meat and its derivatives means, is a highly perishable food and can quickly lose its quality. The eggs are important constituents of the diet, may help to improve the diet of the poor. In shell eggs are considered resistant to lipid oxidation, but studies have shown that commercial egg yolk lipids undergo oxidation during storage. Organic eggs are produced by hens receiving a diet 100% organic, grown in conditions that value their well-being and natural behavior, with some prohibited practices such as beak trimming and confinement in cages. The experiment was conducted to evaluate the effect of storage time on lipid oxidation of egg yolks organic and conventional eggs from hens Isa Brown, collected at 46 weeks of age. Eggs were collected and stored in plastic trays under ambient temperature conditions (25C) using 100 eggs for analysis of the process of TBARS with ten repetitions for different storage periods, corresponding to 0, 7, 14, 21 and 28 days (Table 1). The result

O artigo não possui resumo em português.

RESUMO

Eggs are considered one of the most complete foods, by providing essential health, such as protein, vitamins and mineral elements. Reduction of internal egg quality during storage that is related to the loss of water and carbon dioxide, is proportional to the elevation of temperature. The experiment was conducted to evaluate the effect of storage time on physical quality of organic and conventional eggs from hens Isa Brown, collected at 46 weeks of age. One hundred fifty eggs were used for the analysis of the percentage of weight loss, Haugh unit, percentage of yolk and albumen, with 15 repetitions for different storage periods, corresponding to 0, 7, 14, 21 and 28 days (Table 1). The results obtained were subjected to analysis of variance using the Statistical Package SISVAR and means were compared by Tukey test at 5% significance.No significant statistical differences about the percentage of weight loss of eggs (P>0.05) between the two systems were observed, unlike Haugh units, percent of yolk and albumen showed difference b (P 0.05) between treatments. It was observed that in both systems, there was a reduction in the percentage of albumen, while increased yolk percentage, with best results observed in the eggs from organic system. It can be concluded that the physical quality of eggs from the organic system were higher than those obtained in conventional system eggs.

O artigo não apresenta resumo em português.

RESUMO

Integrated crop-livestock systems have attracted more interest in the last few years due to their capacity of improving stability and sustainability of agricultural systems when compared to more specialized production ones. The crop-livestock integration is an effective technique, but complex to maintain pasture productivity and its recovery, whose efficiency depends on soil physical management and its chemical fertility. Regarding the soil fertility, the corrective practices generally begin with the liming due to the high acidity of most Brazilian soils and low levels of Ca and Mg in the exchange complex and high Al saturation. In areas of crop-livestock systems, liming corrects the surface acidity potential. However, this practice can leave the subsoil with excess aluminum and lack of calcium, which inhibit root growth and affect the absorption of water and nutrients. The application of gypsum allows the improvement of the subsoil, reducing Al saturation and increasing levels of calcium and sulfur. The aim of this study was to investigate changes in the soil chemical properties of a Haplorthox soil in integrated crop-livestock system (ICL) with Brachiaria brizantha cv. Marandu and Piatã, Brachiaria ruziziensis with gypsum and liming application. This study was conducted at the Instituto de Zootecnia, Nova Odessa/SP, a pasture established on a soil with medium texture (61.4% s

ês.

RESUMO

The quail for being an alternative species will be able to supply a new market niche due to its fast growth, high laying rate, low feed intake, in addition to the increase of the acceptance of its products by the consumer. A growing interest in raising the stocking rates in the cages as an alternative to increase the performance of the stock is noticed; although studies demonstrate that high densities can result into unfavorable environment to the birds welfare with alterations in the performance of the flocks and as a stressing factor being able to alter the production and profitability of the flock. At high stocking rates, the birds become predisposed to aggressiveness reactions, presenting cannibalism behavior, besides the combination of factors such as pH, temperature, ventilation and humidity deficiency which create environmental conditions favorable for certain benign bacteria which utilize uric acid of the manure through their enzymatic complexes and produce ammonia, causing stress to birds and which can cause damages to performance with significant economic losses to the producer.  The experiment with 112-day duration was conducted with the objective of evaluating the inclusion of acidulants in the Japanese quails drinking water and verifying the effect on the stocking rate in cages. A completely randomized design with four treatments (2 stocking rates of quails x 2 a

O artigo não apresenta resumo em português.

RESUMO

The quail for being an alternative species will be able to supply a new market niche due to its fast growth, high laying rate, low feed intake, in addition to the increase of the acceptance of its products by the consumer. A growing interest in raising the stocking rates in the cages as an alternative to increase the performance of the stock is noticed; although studies demonstrate that high densities can result into unfavorable environment to the birds welfare with alterations in the performance of the flocks and as a stressing factor being able to alter the production and profitability of the flock. At high stocking rates, the birds become predisposed to aggressiveness reactions, presenting cannibalism behavior, besides the combination of factors such as pH, temperature, ventilation and humidity deficiency which create environmental conditions favorable for certain benign bacteria which utilize uric acid of the manure through their enzymatic complexes and produce ammonia, causing stress to birds and which can cause damages to performance with significant economic losses to the producer.  The experiment with 112-day duration was conducted with the objective of evaluating the inclusion of acidulants in the Japanese quails drinking water and verifying the effect on the stocking rate in cages. A completely randomized design with four treatments (2 stocking rates of quails x 2 a

O artigo não apresenta resumo em português.

RESUMO

Integrated crop-livestock systems have attracted more interest in the last few years due to their capacity of improving stability and sustainability of agricultural systems when compared to more specialized production ones. The crop-livestock integration is an effective technique, but complex to maintain pasture productivity and its recovery, whose efficiency depends on soil physical management and its chemical fertility. Regarding the soil fertility, the corrective practices generally begin with the liming due to the high acidity of most Brazilian soils and low levels of Ca and Mg in the exchange complex and high Al saturation. In areas of crop-livestock systems, liming corrects the surface acidity potential. However, this practice can leave the subsoil with excess aluminum and lack of calcium, which inhibit root growth and affect the absorption of water and nutrients. The application of gypsum allows the improvement of the subsoil, reducing Al saturation and increasing levels of calcium and sulfur. The aim of this study was to investigate changes in the soil chemical properties of a Haplorthox soil in integrated crop-livestock system (ICL) with Brachiaria brizantha cv. Marandu and Piatã, Brachiaria ruziziensis with gypsum and liming application. This study was conducted at the Instituto de Zootecnia, Nova Odessa/SP, a pasture established on a soil with medium texture (61.4% s

ês.

RESUMO

This study was developed to evaluate the effect of adding natural pigments on the storage of eggs from laying hens in the second production cycle submitted to diets based on corn and low-tannin sorghum. A total of 160 eggs from Hy-Line Brown laying hens at 90 - weeks old after forced molting were used. The study evaluated the isolated effect and the interaction of two factors: the inclusion of natural pigments (control diet - 50% low-tannin sorghum replacing the corn; RC - 2% powdered dry turmeric rhizome; PU - 2% dry annatto powder; RCPU - 1% turmeric rhizome + 1% dry annatto powder) combined with the storage period (0, 3, 7, 14 and 21 days). The studied variables were: specific gravity, percentages of yolk, albumen and shell in relation to the egg weight, and yolk color. Yolk color was more intense with increasing percentage of annatto. The inclusion of 2% annatto powder promotes and maintains an adequate pigmentation of egg yolk when stored for up to 21 days. Regardless of natural pigment supplementation, the egg quality decreases as storage time increases. 

RESUMO

This study was developed to evaluate the effect of adding natural pigments on the storage of eggs from laying hens in the second production cycle submitted to diets based on corn and low-tannin sorghum. A total of 160 eggs from Hy-Line Brown laying hens at 90 - weeks old after forced molting were used. The study evaluated the isolated effect and the interaction of two factors: the inclusion of natural pigments (control diet - 50% low-tannin sorghum replacing the corn; RC - 2% powdered dry turmeric rhizome; PU - 2% dry annatto powder; RCPU - 1% turmeric rhizome + 1% dry annatto powder) combined with the storage period (0, 3, 7, 14 and 21 days). The studied variables were: specific gravity, percentages of yolk, albumen and shell in relation to the egg weight, and yolk color. Yolk color was more intense with increasing percentage of annatto. The inclusion of 2% annatto powder promotes and maintains an adequate pigmentation of egg yolk when stored for up to 21 days. Regardless of natural pigment supplementation, the egg quality decreases as storage time increases.