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Objetivou-se com este estudo avaliar os parâmetros sanguineos de bovinos alimentados com diferentes volumosos associados a glicerina. Seis bovinos Nelore, castrados, canulados no rumen, com aproximadamente 30 meses de idade e 400 kg de peso corporal foram utilizados para colheitas de sangue. Os animais foram mantidos em baias individuais recebendo seis dietas experimentais, sendo a silagem de milho, a cana-de-acucar hidrolisada ou o feno os volumosos e o concentrado composto por milho moido, casca de soja, farelo de girassol, suplemento mineral e glicerina , formuladas na proporcao volumoso:concentrado de 50:50. O periodo experimental foi de 150 dias, dividido em seis subperiodos de 25 dias cada. As colheitas de sangue foram realizadas no ultimo dia de cada subperiodo experimental. O delineamento utilizado foi o quadrado latino 6×6 em esquema fatorial 3×2 (tres volumosos × presenca ou ausencia de glicerina) . Os tratamentos estudados nao alteraram (P>0,05) nenhum dos parâmetros do hemograma. Houve efeito dos tratamentos sobre a atividade da enzima AST (P = 0,023) e sobre a concentracao de colesterol (P = 0,021). Nao houve efeito da interacao entre os diferentes volumosos e a inclusao ou nao de 10% de glicerina associada a estes tratamentos em nenhum dos parâmetros estudados, exceto entre o tratamento com cana-de-acucar hidrolisada (86,01 mg/dL) e o tratamento com cana-de-acucar hidrolisada adicionada de 10% de glicerina (60,78 mg/dL) sobre a concentracao de glicose (P = 0,0486). Diferentes volumosos associados ou nao a glicerina em dietas para bovinos de corte, promovem alteracoes nos parâmetros sanguineos dos animais. SUMMARY The objective of this study was to evaluate the blood parameters of cattle fed different roughages and crude glycerin. Six Nellore bovines, cannulated in the rumen, castrated, with approximately 30 months and 400 kg of body weight were used for blood sampling. The animals were kept in individual pens receiving six experimental diets, with corn silage, hydrolyzed sugar cane or hay and concentrate composed of corn, soybean hulls, sunflower meal, glycerin and mineral supplement, formulated in a roughage:concentrate ratio of 50:50 . The experimental period was 150 days, divided into six sub-periods of 25 days each. The blood samples were taken at day last day of each experimental subperiod. The experimental design was a 6 × 6 Latin Square in a 3 × 2 factorial system (three roughages × presence or absence of glycerin). The treatments used did not change (P>0.05) any of the parameters of the hemogram. There was treatment effects on the AST enzyme activity (P = 0.023) and cholesterol concentrate (P = 0.021). There was no significant effect between the roughages and the inclusion of 10% glycerin associated with these treatments in any of the parameters studied, except between hidrolysed sugar cane treatment (86.01 mg/dL) and hidrolysed sugar cane treatment added of 10% of glycerin (60.78 mg/dL) on glucose concentrate (P = 0.0486) . Different roughages associated or not with glycerin in diets for beef cattle, promote changes in blood parameters of animals.

ars veterinária

ROUGHAGES AND CRUDE GLYCERIN ON BEEFCATTLE DIETS: EFFECT ON THE HEMOGRAM AND SERIC BIOCHEMISTRY / VOLUMOSOS E GLICERINA BRUTA NA DIETA DE BOVINOS DE CORTE: EFEITO SOBRE O HEMOGRAMA E BIOQUÍMICA SÉRICA.