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Orden et al., 2000. Asian-Aust. J. Anim. Sci., 13 (12): 1659-1666

Document reference 
Orden, E. A. ; Abdulrazak, S. A. ; Cruz, E. M. ; Orden, M. E. M. ; Ichinohe, T. ; Fujihara, T., 2000. Leucaena leucocephala and Gliricidia sepium supplementation in sheep fed with ammonia treated rice straw: effects on intake, digestibility, microbial protein yield and live-weight changes. Asian-Aust. J. Anim. Sci., 13 (12): 1659-1666

Two experiments were conducted to determine the effects of L. leucocephala (leucaena) and G. sepium (gliricidia) supplementation on intake, digestion, outflow rates, microbial protein yield and live-weight changes in sheep fed with ammoniated rice straw (ARS). In experiment 1, three rumen cannulated Japanese Corriedale wether (mean body weight of 35.6 kg) in 3 * 3 Latin Square Design were used. Animals were fed ad libitum ARS alone, or supplemented with 200 g of either leucaena or gliricidia. In experiment 2, twenty-four growing native Philippine sheep with average body weight of 13.50.25 kg were used in a completely randomized design (CRD) and offered similar diets to those of experiment 1. Supplementation increased total dry matter intake and nutrient digestibility except for fibre (P<0.05) without affecting ARS consumption. Nitrogen balance revealed that absorbed and retained N was significantly higher in leucaena and gliricidia. The significant improvement in N utilization and more digestible OM intake brought about by the inclusion of leucaena and gliricidia to ARS resulted in increased (P<0.05) microbial N yield. Efficiency of microbial N supply in supplemented group was not significantly different, but higher (P<0.05) than the 24.92 g N/kg DOMR for ARS group. Liquid outflow rate was 7.8 and 6.8 %/h, while the solid phase of rumen digesta was 4.4 and 3.8 %/h for the leucaena and gliricidia group respectively, which were significantly higher than 5.30 and 2.50 %/h in the control diet. The increase in total DMI resulted to higher (P<0.01) growth performance and efficient feed utilization. Average daily gain (ADG) was 19.3, 34.6 and 33.9 g/d for the ARS, leucaena and gliricidia respectively. It is therefore concluded that addition of leucaena and gliricidia to ARS in could increase nutrient intake and digestibility, subsequently improving N utilization and livestock performance.

Citation key 
Orden et al., 2000