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首页> 外文期刊>Tropical Animal Health and Production >Effect of supplementing a high-protein ram press sunflower cake concentrate on smallholder milk production in Zimbabwe
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Effect of supplementing a high-protein ram press sunflower cake concentrate on smallholder milk production in Zimbabwe

机译：补充高蛋白压榨葵花籽饼浓缩物对津巴布韦小农户牛奶生产的影响

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摘要

Ram press sunflower cake protein concentrate was formulated locally and its effect on the performance of dairy cows was compared with that of a commercial dairy concentrate. The effects of concentrate on roughage dry matter intake, milk yield and milk composition, live weight and calving intervals were similar for all concentrates, which indicated that the home grown dairy concentrates were as effective as the dairy commercial concentrate. The lack of significant differences in the concentrations of rumen NH3-N, pH, VFAs and total AA in all the cows between concentrate types supported this. The results indicated that in the low-resource and low-input production systems, crossbreds were as productive as Jersey and Red Dane cows. The exotic cows were more susceptible to tick-borne diseases and mastitis, and showed higher incidences of calving problems and retained placenta compared with crossbred cows. The economics of feeding ram press sunflower concentrate were compared with those of a commercial dairy concentrate on the performance of crossbred, Red Dane and Jersey cows. The gross margin was higher when feeding sunflower cake than when feeding commercial dairy concentrate (p < 0.05).
机译：将Ram press葵花籽蛋白浓缩物在当地配制，并将其对奶牛性能的影响与市售乳品浓缩物进行比较。浓缩物对所有浓缩物的粗饲料干物质摄入量，产奶量和产奶量，活重和产犊间隔的影响相似，这表明自家种植的乳制品浓缩物与乳品商业浓缩物一样有效。在不同奶牛类型之间，所有奶牛的瘤胃NH3 -N，pH，VFA和总AA均无显着差异，这支持了这一点。结果表明，在低资源，低投入的生产系统中，杂种的生产力与泽西和红丹犬一样。与杂种母牛相比，外来母牛更容易感染tick传疾病和乳腺炎，并且产犊问题和胎盘保留率更高。在杂交，红丹犬和泽西奶牛的生产性能方面，将公羊压榨向日葵浓缩汁与商业性乳制品浓缩汁的经济性进行了比较。饲喂葵花籽饼时的毛利率高于饲喂市售乳制品浓缩物时的毛利率（p <0.05）。

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