日粮蛋白质重新分配对奶牛泌乳性能的影响

在保持泌乳牛日粮原料种类与数量不变的前提下，提高早上、中午饲粮中蛋白质含量，降低晚上饲粮中蛋白质含量，使蛋白质的数量与质量在一天中不同的生产阶段内形成相对充裕与不足，以适应养殖场的生产安排、泌乳牛的生理生产特点以及饲料的可消化属性等客观条件。通过调整，日产20kg左右标准乳的乳牛泌乳成绩提高2．1kg。与对照组相比，效果极为显著（P〈0．01）。

Effect of Protein Redistribution in Diet on Lactation Performancl of Dairy Cattle

Under the premicl of that the material type and quantity in diet of dairy cattle not changed,the protein content of diet in morning and noon were increased and the protein content of diet in night was decreased to supply relative abundant or relative inadequate quantity and quality of protain in defferent production stages in a day,in order to adapt such the objective condition as the production arrangement in dairy cattle farm,the characters of physiology-production of dairy cattle and the digestible prope...