Hydrolyzed feather meal (HFM) is a feed that high in rumen undegradable protein; however, it low Lys compared with other protein sources. Additionally, processing methods differ by facility, which affects AA composition and digestibility. The objective of this study was to use lactating dairy cows determine the effects feeding 2 sources HFM differed amount blood they contained also supplementin...

Abstract Sustainability use of expensive protein source in a dairy ration requires formulation based on rumen degradable and undegradable ratio (RDUP). It improves the efficiency microbial synthesis less feed residue to environment. Providing green sources such as leucaena (Leucaena leucocephala) is also an alternative. This study aimed evaluate effect RDUP with addition vitro fermentability di...

Abstract In ruminant diets, rumen undegradable starch (RUS) contributes to maintaining health by maximizing post-ruminal absorption. This present study aimed estimate dietary RUS values from their chemical composition. The database was developed some literature search engines and obtained 41 studies 17 references. composition of ash, dry matter (DM), neutral detergent fiber (NDF), acid lignin (...

Large fluctuations in milk and supplemental feed prices create anxiety and uncertainties. Profit margin may shrink rapidly when milk price goes down and supplemental feed prices go up. Thus, it is important that correct decisions are made to maximize return on supplemental feed expenses. The change in prices and milk production response to feed supplements are especially important because they ...