R. Singgih Sugeng Santosa, Grete Thinggaard, Udo ter Meulen:
Effect of Rice Bran Replacement with Treated Cassava Peel (CaP) in Diets on Growth Performance of Indonesian Indigenous Sheep

R. SINGGIH SUGENG SANTOSA$1$, GRETE THINGGAARD$2$, UDO TER MEULEN$2$
$1$Jenderal Soedirman University, Department of Animal Husbandry, Indonesia
$2$Georg-August-Universität Göttingen, Institute of Animal Physiology and Nutrition, Germany

A study was conducted to investigate the effect of replacing dietary rice bran with treated cassava peel (CaP) on the growth performance of Indonesian indigenous sheep. Twenty-four indigenous sheep each weighing 12.49 $\pm$ 1.27kg were in a Completely Randomized Design assigned to one of 4 treatments diets. The control diet (diet 1) was 25% Napier grass and 75% concentrate containing 15% molasses, 16.73% coconut cake,1.5% CaCO$$₃ , 1.5% premix, 0.27% urea and 40% rice bran. The rice bran was in diet 2 replaced with 40% fresh CaP, in diet 3 with 40% boiled CaP and in diet 4 with 40% CaP fermented with Saccharomyces cerevisiae. Content of coconut cake and urea were adjusted to make all treatment diets iso-nitrogenous and isocaloric. Feed intake, daily body weigh gain, and feed conversion ratio (FCR) were measured. The feed intake of sheep fed diets 1 (control), 3 and 4 did not differ ($p>0.05$). However, that of diets 2 differed with 1, 3 and 4 ($p\; >\; 0.05$). Mean feed intake was [693.87]gday g/day, [833.95]gday, [733.40]gday, and [662.40]gday for diets 1, 2, 3 and 4, respectively. Average daily gain of sheep fed diet 4 was higher than that of sheep fed diets 2 and 3 but not different from diet 1. The average daily gain was [77]gday, [65]gday, [76]gday and [96]gday for sheep fed diets 1, 2, 3 and 4 respectively. Diet 4 FCR did not differ ($p>0.05$) from that of sheep fed diets 3 and 1, but differed from that of diet 2. Mean of FCR was 9.01, 12.83, 9.65 and 6.90 for diets 1, 2, 3 and 4, respectively. It was concluded that treated CaP especially fermented CaP may replace rice bran in diets for improving performance of Indonesian indigenous sheep.

Keywords: Growth performance, indigenous sheep, rice bran, treated cassava peel, Indonesia

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Contact Address: Udo ter Meulen, Georg-August-Universität Göttingen, Institute of Animal Physiology and Nutrition, Kellnerweg 6, 37077 Göttingen, Germany, e-mail: umeulengwdg.de