ingestão, digestibilidade das rações e parâmetros sangüíneos em cabras saanen durante o pré-parto recebendo rações com diferentes níveis de energia intake, nutrient digestibility, and blood parameters on prepartum saanen goats fed diets with different energy levels

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ID: 237498
2006
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Abstract
O objetivo neste trabalho foi avaliar a ingestão e a digestibilidade dos nutrientes das rações e os parâmetros sangüíneos de 20 cabras Saanen (70,65±7,39 kg) no período de 21 dias pré-parto, em condições de confinamento. Foram utilizados cinco níveis de energia 2,95; 2,83; 2,70; 2,58 e 2,46 Mcal de EM/kg de MS, com as respectivas relações volumoso:concentrado 40:60, 50:50, 60:40, 70:30 e 80:20. O delineamento utilizado foi o inteiramente casualizado, com quatro repetições por tratamento. Os níveis de energia não influenciaram o peso vivo e as ingestões de MS, MO, PB, CT, FDN e NDT. No entanto, verificou-se efeito linear positivo da energia da ração sobre a ingestão de EE. Os níveis energéticos da ração influenciaram a digestibilidade dos nutrientes, observando-se efeito linear positivo para MS, MO, EE, FDN, CT e EB, todavia, não houve efeito para PB. Não houve efeito dos tratamentos sobre os valores de colesterol e uréia, mas verificou-se efeito linear positivo do nível energético da ração sobre os níveis de triglicerídeos (mg/dL). O nível de energia de 2,95 Mcal/kg de MS da ração resultou em maior disponibilidade de nutrientes em cabras Saanen no período pré-parto.
The objective of this study was to evaluate nutrient intake, blood parameters and digestibility of nutrients on 20 feedlot Saanen goats (70.65±7.39 kg) at 21 days prepartum. Diets with the following energy levels and forage:concentrate ratios were fed: 2.95, 2.83, 2.70, 2.58, and 2.44 Mcal of ME/kg of DM and 40:60, 50:50, 60:40, 70:30, and 80:20, respectively. A completely randomized design with four replications per treatment was used. Animal body weight and blood samples were taken weekly. The different dietary energy levels did not affect body weight (kg) and intakes of DM, OM, CP, TC, NDF, and TDN. However, a significant linear effect was observed for intake of EE by increasing the dietary energy level. With the exception of CP, apparent digestibilities of DM, OM, EE, NDF, TC, and GE all increased linearly when the energy content of the diet increased from 2.44 to 2.95 Mcal of ME/kg of DM. No significant effects were observed for the blood concentrations of cholesterol and urea among treatments. Conversely, concentration of blood triglycerides accompanied the increment of energy in the diet and increased linearly. It can be concluded that the diet with 2.95 Mcal of ME/kg of DM resulted in greater nutrient availability than diets with lower energy content when fed to prepartum Saanen goats.
Reference Key
zambom2006revistaingesto, Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Maximiliane Alavarse Zambom;Claudete Regina Alcalde;Francisco de Assis Fonseca de Macedo;Jocilaine Garcia;Gentil Vanini de Moraes;Marlene Leiko Doi Sakuno;Everton Luiz Borgh
Journal european journal of lipid science and technology
Year 2006
DOI
10.1590/S1516-35982006000600039
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982006000600039
Keywords
digestion energy level

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