Evaluasi komposisi tubuh dan pemanfaatan nutrien di ambing kambing peranakan etawah laktasi yang diberi pakan fermentasi limbah tempe
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This study was done to evaluate the body composition, uptake nutrient in mammary gland and milk amino acid profile of lactating Etawah Crossbred goats fed with tempeh waste. Twelve second lactating goats were randomly allotted into three groups that received concentrate (R1), concentrate plus fresh tempeh waste (R2) and concentrate plus fermented tempeh waste (R3) Fermented tempeh waste was made with Aspergillus niger. Kinggrass was given 50% of the total ration for all groups. Urea space technique was used to measure body composition in the prior and end of study, while milk production was collected two times a day during two months since post partum. Total milk protein and amino acid in whole milk, whey anct-casein were analyzed using kjeldahl method and amino acid analyzer, respectively. Nutrient uptake in mammary gland was calculated using Fick principles. Result showed that there was significant different of body weight, where R3 treatment was the highest. Body water, protein and fat were same in all treatments. The highest of milk yield was found in fermented tempeh waste group. Concentration of glutamic acid was dominant than other essential amino acids in whole milk and casein but there were no significant different between groups for those essential amino acid. It was concluded that fermented tempeh waste could substitute 50% of total concentrate and had the highest body weight and milk yield in lactating Etawah Crossbred goats. Body composition and nutrient uptake in mammary gland were same in all treatments.