Evaluasi Komposisi Tubuh dan Pemanfaatan Nutrien di Ambing Kambing Peranakan Etawah Laktasi yang Diberi Pakan Fermentasi Limbah Tempe
Evaluation of Body Composition and Nutrient Uptake on the Mammary Gland of Ettawah Crossbred Goat Lactation Fed by Fermented Tempeh Waste
The aim of this study was to evaluate the body composition, nutrient uptake in mammary gland and milk amino acid profile of lactating Etawah Crossbred goats fed by tempeh by product. Twelve lactating goats were randomly allocated into three groups which fed by ration containing concentrate (R1), concentrate plus 25% fresh tempeh waste (R2) and concentrate plus 25% fermented tempeh waste (R3). Tempeh waste was fermented by Aspergillus niger. Kinggrass was given 50% of the total ration for all groups. Urea space technique was used to measure body composition before and after the experiment was done. Milk production was calculated two times a day during two months after giving birth (postpartum). Total milk protein and amino acid, whey and casein were analyzed by kjeldahl method and amino acid analyzer respectively. Nutrient uptake in mammary gland was calculated base on Fick principles. Result showed that there was significantly different on body weight, but on body water, protein and fat had no significant difference between the treatments. The best milk production 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 difference between groups for those essential amino acid profile. It was concluded that fermented tempeh waste could substitute 50% of total concentrate and had the highest body weight, milk yield and nutrient uptake in the mammary gland of lactating Etawah Crossbred goats.
Key words: body composition, fermentation, lactating PE goat, nutrient uptake, tempeh waste
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