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This study aimed to determine the net energy requirement of Holstein cows in mid‐lactation under heat stress. Twenty‐five multiparous Holstein cows were randomly allocated to five groups corresponding to five isonitrogenous total mixed rations, with net energy for lactation (NEL) content of 6.15 (NE‐6.15), 6.36 (NE‐6.36), 6.64 (NE‐6.64), 6.95 (NE‐6.95), 7.36 (NE‐7.36) MJ/kg of dry matter (DM), respectively...
Meat and bone meal (MBM), a type of protein feed source, with high nutritional value, has been widely used as feed in China. In order to study the effect of defatting on the quality of MBM, MBM were defatted by hexane, and their basic nutritional components, color, flavor, protein characteristics, freshness indexes before and after defatting, were investigated. The crude protein content of the defatted...
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