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Articles by Sri Rahayu
Total Records ( 2 ) for Sri Rahayu
  Sri Rahayu , Mohamad Yamin , Cece Sumantri and Dewi Apri Astuti
  This study evaluated the effect of a diet containing mung bean sprout waste (MBSW) as a fiber source and feeding time on the growth performance and physiological responses of Garut lambs. Feeding regimens generated by a factorial randomized block design with two factors- diet and feeding time-were assigned to twenty Garut male lambs aged 6-7 months (BW 15.42±2.42 kg). The two diets (D) formulated with a dry matter (DM) base were D1 (60% concentrate 1+40% natural grass) and D2 (60% concentrate 2+40% MBSW). Feeding times were in the morning (MF, 6:00-7:00 am) or the evening (EF, 5:00-6:00 pm). The animals were reared in individual cages and fed with 5% DM/kg body weight/day. Nutrient intake (DM, crude protein (CP), total digestible nutrient (TDN) and average daily gain (ADG) of lambs fed D2 was significantly (p<0.01) higher than that of lambs fed D1. The feed conversion ratio (FCR) of lambs fed with D2 at the EF feeding time was significantly improved (6.07, p<0.05) compared to lambs fed D1 at the MF and EF time, respectively (7.88 and 8.27), or lambs fed D2 at the MF time (7.84). Heart rates (HR) were higher in lambs fed D2 than lambs fed D1. In contrast, the respiration rate (RR) and rectal temperature (RT) were similar for all treatments. These results suggest that diets containing 40% MBSW as a fiber source together with an evening feeding time could increase growth performance while preserving normal physiological responses of Garut lambs.
  Muhamad Bata and Sri Rahayu
  Objective: The purpose of this study was to find the type of Hibiscus tiliaceus leaf extract carrier for improving the fermentation products and ruminal metabolism efficiency. Methodology: This study was designed according to completely randomized design with 3×2 factorial patterned and repeated three times. The first factor was the type of feed ingredients as carrier such as cassava waste meal, rice bran and rice straw ammoniated and the second factor was the doses of Hibiscus tiliaceus extract i.e., 0 and 200 ppm. Results: Analysis of variance showed that additional leaf extract of H. tiliaceus with various carrier materials (cassava waste meal, rice bran and rice straw ammoniated) did not affect (p>0.05) on the total protozoa, microbial protein synthesis, fermentation product and activity of hydrolytic enzymes in rumen liquid. However, additional H. tiliaceus leaf extract at 200 ppm tended to reduce total protozoa, but total VFA and the activity of rumen amylase, protease and cellulase increased. Feedstuff with higher capacity to reduce protozoa population and to increase VFA and enzyme activity was rice bran. Cassava waste meal, rice bran and ammoniated wheat straw can be used as carrier of ethanolic extracts of H. tiliaceus leaf. Conclusion: This study recommended that rice bran as carrier for in vivo application due to the defaunation effects of rumen protozoa and high hydrolytic enzymes activity in the rumen.
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