Philippine E-Journals

EFFECT OF AUGMENTED FEEDING WITHBYPASSAMINO ACIDSAND SLOW-RELEASE NON-PROTEIN NITROGENSUPPLEMENTSON MILK PEAK, LACTATION PERSISTENCY, MILK QUALITYAND POST-PARTUM REPRODUCTIVE PERFOMANCE OF BRAZILIANBUFFALOES

Daniel L. Aquino | Mike V. Del Rosario | King Frel Vergarra

 

Abstract:

 A total of 25pregnant and primiparous Brazilian buffaloes were used in this study to determine the effects of augmented feeding with bypass amino acids (BPAA) and slow-release non-protein nitrogen (SRNPN) supplements on milk peak, lactation persistency, milk quality and post-partum reproductive performance. Individual cows were allotted to 5 dietary treatments using a randomized completed block design. The dietary treatments were without (control) or with augmented feeding (AF),AF supplemented with bypass amino acids(BPAA); AF supplemented with slow-release non-protein nitrogen (SRNPN),and AF supplemented with BPAA and SRNPN. There were 5cows per treatment and each cow served as a replicate. The feed ration was composed of corn silage (67.3%),rice straw (9.5%) and dairy concentrate pellets (23.2%).The supplementary concentrates, BPAA ,and SRNPN were given at 0.5kg/kg of milk production, 100 g and 50 g/(hd⋅d), respectively. Augmented feeding alone or with supplementary SRNPN resulted in greater(P<0.05) milk peak compared with the other treatments. Dairy buffaloes with A Falone or with supplementary BPAA and SRNPN had the greatest (P<0.05) 305-d adjusted total milk yield among the treatments. No significant differences were observed on lactation persistency and post-partum reproductive performance. Dairy buffaloes under AF supplemented with BPAA had greater (P<0.05) milk fat and total solids contents compared with the rest of the treatments. The use of augmented feeding with BPAA and SRNPN supplements resulted in greater net income of P33,762 per lactation. In conclusion, augmented feeding alone or with BPAA and SRNPN supplements in dairy buffaloes improves ADG, nutrient utilization and milk production.