The aim of this study was to examine the effects of utilization of roughage sources and by-pass protein sources using nylon bag and three step techniques in 3 permanent rumen fistulae goats fed with rice straw as roughage.
Effect of study of ruminal degradability of roughage sources, the results showed that potential dry matter degradability (A+B) of fresh guinea grass and silage guinea grass were significantly higher (p<0.05) than those of hay guinea and urea treated rice straw. Dry matter effective degradability of fresh grass was higher (p<0.05) than that of silage grass, silage grass was higher (p<0.05) than that of hay grass and hay grass was higher (p<0.05) than that of urea treated rice straw. Constants neutral detergent fiber (NDF) values of B and A+B of fresh and silage grasses were significantly higher (p<0.05) than those of hay grass and urea treated rice straw. However, degradability rates (c) were not different among treatments. NDF effective degradability of fresh and silage grasses were significantly higher (p<0.05) than those of hay grass and urea treated rice straw.
Dry matter degradability of by-pass protein sources such as soybean meal, coconut meal, palm meal and sunflower seed meal were used in this study. Dry matter degradability at 0, 8, 12 and 72 hr incubation time of soybean meal was significantly higher (p<0.05) than those of coconut meal, palm meal and sunflower seed meal. Constants dry matter values of A, B and A+B of soybean meal was significantly higher (p<0.05) than those of coconut meal, palm meal and sunflower seed meal. Moreover, overall protein degradability in rumen of soybean meal was significantly higher (p<0.05) than those of coconut meal, palm meal and sunflower seed meal. Intestinal protein digestibility of soybean meal and palm meal were significantly higher (p<0.05) than that of sunflower seed meal. Total protein digestibility (rumen + intestinal) of soybean meal, coconut meal and sunflower seed meal.
การแปล กรุณารอสักครู่..
