RESUMEN

Background: In ruminant diets additives are widely used in ensiled forages to enhance the acidification. Molasses used asadditive could provide fermentable substrates for lactic acid bacteria and act as a fermentation stimulant. Adding molassesto materials before ensiling could decrease pH, and increase lactic acid levels and residual water-soluble carbohydrates.These changes may cause disease in farm animals. Therefore, the objective of the present study was to investigate thebiochemical and pathological changings of dairy cows which fed with excessive molasses.Materials, Methods & Results: The blood samples were collected from 10 affected (8 Holstein and 2 Montofon cows) and10 healthy (8 Holstein and 2 Montofon) cows (median age: 4.5). Skin biopsies were also taken from the skin of dorsal andrump area from two affected cows. Albumin, glucose, total protein, calcium, potassium, magnesium, sodium, phosphorous,uric acid levels were measured in blood serum samples. The serum glucose, sodium, calcium, magnesium and, uric acidconcentrations of dermatitis group revealed significantly (P < 0.05) lower values compared to control group. But no significant differences were found in total protein, albumin, potassium, and phosphorous levels between the groups. Histopathology of the skin biopsy samples from affected skin parts revealed subacute inflammatory dermatitis and subacute chronichyperplastic perivascular dermatitis. A significant (P < 0.05) reduction in the mean concentration of calcium, magnesium,and sodium were determined in the dermatitis group compare to the control group. Calcium concentration decreased to9.42 ± 0.17 mmol/L in dermatitis group. The magnesium and sodium concentrations, the mean values of the dermatitisgroup were decreased to 2.03 ± 0. 06 mEq/L and 148.30 ± 0.97 mEq/L respectively. Glucose and uric acid levels in thedermatitis group decreased significantly (P < 0.05) (53,8±3,5, 0,58±0,05) compared to the controls...(AU)

Asunto(s)

RESUMEN

Background: In ruminant diets additives are widely used in ensiled forages to enhance the acidification. Molasses used asadditive could provide fermentable substrates for lactic acid bacteria and act as a fermentation stimulant. Adding molassesto materials before ensiling could decrease pH, and increase lactic acid levels and residual water-soluble carbohydrates.These changes may cause disease in farm animals. Therefore, the objective of the present study was to investigate thebiochemical and pathological changings of dairy cows which fed with excessive molasses.Materials, Methods & Results: The blood samples were collected from 10 affected (8 Holstein and 2 Montofon cows) and10 healthy (8 Holstein and 2 Montofon) cows (median age: 4.5). Skin biopsies were also taken from the skin of dorsal andrump area from two affected cows. Albumin, glucose, total protein, calcium, potassium, magnesium, sodium, phosphorous,uric acid levels were measured in blood serum samples. The serum glucose, sodium, calcium, magnesium and, uric acidconcentrations of dermatitis group revealed significantly (P < 0.05) lower values compared to control group. But no significant differences were found in total protein, albumin, potassium, and phosphorous levels between the groups. Histopathology of the skin biopsy samples from affected skin parts revealed subacute inflammatory dermatitis and subacute chronichyperplastic perivascular dermatitis. A significant (P < 0.05) reduction in the mean concentration of calcium, magnesium,and sodium were determined in the dermatitis group compare to the control group. Calcium concentration decreased to9.42 ± 0.17 mmol/L in dermatitis group. The magnesium and sodium concentrations, the mean values of the dermatitisgroup were decreased to 2.03 ± 0. 06 mEq/L and 148.30 ± 0.97 mEq/L respectively. Glucose and uric acid levels in thedermatitis group decreased significantly (P < 0.05) (53,8±3,5, 0,58±0,05) compared to the controls...

Asunto(s)

RESUMEN

Con el fin de evaluar el efecto de la complementación con heno-melaza-urea sobre la ganancia de peso, duración de lactancia y producción láctea en 31 cabras criollas, se realizó un ensayo en San José de los Ranchos, municipio Torres del estado Lara, Venezuela. Las cabras, con un peso vivo promedio de 28,87 ± 2 Kg., fueron sometidas a través de un diseño completamente aleatorizado a los siguientes tratamientos, To: Testigo (pastoreo y ramoneo de especies nativas exclusivamente); T1: To + heno (55,55%)-melaza (44,45%) y T2: To + heno (53,19%)-melaza (42,55%)-urea (4,26%), siendo complementados ambos grupos cuando los animales eran encorralados durante la noche. Se obtuvieron diferencias significativas (P<0,05), entre tratamientos, sobre la ganancia diaria de peso con medias de 91,61; 55,86 y 25,40 g para T2, T1 y To, respectivamente. La producción de leche y duración de la lactancia, no fueron estadísticamente diferentes (P>0,05), con medias de 16,30; 17,51 y 18,70 Kg./ semana y 9,00; 8,43 y 9,00 semanas para To, T1 y T2, respectivamente. Se puede concluir que la complementación con heno-melaza-urea constituye una fuente nutricional potencial para recuperar la condición corporal de cabras criollas lactantes, manejadas en condiciones extensivas similares a las descritas en este ensayo.

In order to evaluate complementation effects of hay-molasses-urea on average daily gain, lactation length and lactation yield with 31 native goats, a trial was carried out in San Jose de los Ranchos, Torres Municipality, Lara State, Venezuela. Goats with average weight of 28.87 ± 2 kg, were submitted to a completely random design to To: Control (grazing and browsing only); T1: To + hay (55.55%), molasses (44.45%) and T2: To + hay (53.19%), molasses (42.55%), urea (4.26%), being complemented both groups when animals were gathered during night time. There was significant differences (P<0.05) on average daily gain with means of 91.61, 55.86 and 25.40 g for T2, T1 and To, respectively. Milk yield and lactation length were no statistically different (P>0.05), with means of 16.30, 17.51 and 18.70 kg/week and 9.0, 8.43 and 9.0 weeks for To, T1 and T2, respectively. So, it can be pointed out that hay-molasses-urea complementation, constitutes a potential nutritional source to recuperate body condition of lactating native goats raised under extensive conditions similar to those described in this trial.

Asunto(s)

RESUMEN

Three experiments were conducted to determine the efficacy of sugar cane molasses to improve performance of broiler chicks fed a diet containing 30% raw or autoclaved Canavalia ensiformis seeds (Jack beans). For this latter purpose, canavalia seeds were ground and autoclaved at 120 degrees C and 15 psi during 60 min. Day-old male chicks (Cobb x Cobb) were used throughout the study. In Experiment 1, adding 10% molasses to a control diet devoided of jack beans seeds significantly (p < 0.05) increased chick feed intake. However, neither the addition of 10% molasses nor of 5% glucose, sucrose, fructose, xylose or corn starch to the 30% raw canavalia ration allowed feed intakes similar to that shown by the control diet (Experiment 2). Broiler performance was evaluated in Experiment 3 in response to diets containing 30% raw or autoclaved jack bean meal. Ten-percent molasses was also added to both diets which along with the control diet were fed to chiks had free access to diets. Growth was depressed when the Jack bean containing diets were pair-fed to chicks. The results indicated that the use of molasses does not overcome the deleterious effects on chick performance due to the presence of 30% raw or autoclaved jack bean meal in the diets.

Asunto(s)