The Effect of Supplementation Urea and Sulfur in Mixed Cassava Waste Fermented and Soyabean Cake Waste on Digestibility of Protein and Blood Urea Male Sheep
Eighteen local male sheep were divided into 3 groups I,II and III based on the body weight 18.55±1.27, 15.79±0.67 and 13.14±1.33 kg respectively. Two level urea (2 and 3%) and three levels Sulfur (0.02 and 0.3%) as treatment, so pattern factorial 2x3 with Randomized Block Design used this experiment. All of the treatment get a same basal feed namely land-grass and concentrate with dry matter ratio 70:30. The total intake of dry matter was 4 % of body weight. The concentrate consist of cassava waste fermented and soyabean cake waste with dry matter ratio 77.50 : 22.50. Supplementation of urea and sulfur shown not significant interaction, but supplementation urea had effect high significantly (P<0.01) on digestibility of protein and sulfur only had effect significant (P<0.05) on blood urea. These result had indication that enriched urea in the diet could increase protein digestibility and sulfur level 0.2% could prevent NH3 absorption from rumen. (Animal Production 1(2): 75-81 (1999)
Key Words: cassava waste, soyabean cake waste, fermentation, digestibility, urea blood.
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