Ruminal nitrogen, blood nitrogen and nitrogen retention in growing goat fed on diets with urea-limestone mixture supplementation and different nitrogen to non-fiber carbohydrate ratios.

Autor: Harahap, Muhammad Ainsyar, Nuswantara, Limbang Kustiawan, Pengestu, Eko, Wahyono, Fajar, Achmadi, Joelal
Předmět:
Zdroj: AIP Conference Proceedings; 2024, Vol. 3098 Issue 1, p1-4, 4p
Abstrakt: The study examined the effect of limestone-urea mixture (LU) supplementation with different nitrogen (N): non-fiber carbohydrate (NFC) ratio in the diet on ruminal nitrogen, blood nitrogen and retention of nitrogen in growing goat. Twelve goats with body weight average of 20.83±7.42 kg and aged at 4-6 months old were randomly divide into four blocks based on their body weight and received three dietary treatments. The dietary treatments were 1) C12 diet with 1:12 of N:NFC ratio and without LU supplementation, 2) LU12 diet with 1:12 of N:NFC ratio and LU supplementation and 3) LU18 diet with 1:18 of N:NFC ratio and LU supplementation. The feeding trial was conducted 12 weeks and continued to determination of nitrogen metabolism. Ruminal and blood ammonia concentrations were unaffected by treatment. Concentration of blood urea was higher (P<0.05) in C12 group than in LU12 and LU18 groups. Compared to C12 group, the LU12 and LU18 groups had better (P<0.05) N urinary loss and N retention; but fecal N remained similar among groups. The results of this study indicated that adding LU on diet could improve nitrogen utilization by reducing N urinary loss and better N retention. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index