Nitrogen utility on income over feed cost in complete feed napier grass cv gama umami based with different calliandra ( Calliandra calothyrsus) substitution levels

Abstract

The purpose of this study was to determine the N efficiency and economics of complete feed based on Napier grass cv Gama umami with different levels of Calliandra (Calliandra calothyrsus). The Ewes used in this study were 15 with 11.3±1.34 kg of body weight at the age of 8 months. Complete feed treatment given to livestock objects, namely T0 = Napier grass cv GU 60% + Concentrate 40%; T1 = Napier grass cv GU 45% + Concentrate 40% + Calliandra 15%; T2 = Napier grass cv GU 30% + Concentrate 40% + Calliandra 30%. The sample collection phase consisted of treatment feed, leftover feed, and urine which were collected for seven days. The resulting data was then processed using One-way ANOVA with data that had differences in further testing using DMRT (p<0.05). The experimental results showed that the addition of Calliandra levels in complete feed did not affect nitrogen retention in sheep (p>0.05). Economic figure on feed with the addition of Calliandra to complete feed showed a higher income when compared to feed without using Calliandra (p<0.05). The most effective use of Calliandra level with the highest income is seen in giving as much as 30%.