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

Abstract

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%.