COMPARATIVE PERFORMANCE OF GOATS AND SHEEP FED ON HIGH-FIBER PELLETEDDIETS SUPPLEMENTED WITH DIFFERENT NITROGEN-SOURCES

Comparative performance of growing local male Omani goats and sheep we re studied using high-fiber pelleted diets supplemented with fish sard ine; urea and conventional plant proteins (alfabfa). The fish diet (F- diet) was based (As-fed) on 39.5% date by-products (DBPS) and suppleme nted with 10% fish sardine; the urea diet (U-diet) was based on 32% DB PS and supplemented with 1.7% urea and the alfalfa diet (A-diet) was b ased on 42% ground alfalfa hay. The three diets were formulated to be isonitrogenous furnishing 12-13% CP (DM-basis). The diets along with R hodes grass (Chloris guyana) hay were fed ad libitum to twelve goats a nd twelve sheep for 80 days. Feed intake was significantly different ( P<0.01) among diets, with F-diet having the highest value, followed by U-diet and A-diet. Liverweight gain and feed conversion efficiency we re not affected (P>0.05) by diets but goats and sheep did differ (P<0. 05) with goats gaining more (122.5 vs 88g) and consuming less feed tha n sheep (1500.5 vs 1585g) with better FC (12.2 vs 17.8). Supplementati on of high fiber diets with fish sardine and urea significantly decrea sed cost of feeding by 42 and 45 percent, respectively.