摘要
Holstein calves (n = 68; 40 heifers) at two locations were used to evaluate effects of the addition of plasma protein to milk replacers on growth, intake, feed efficiency, and fecal scores. Milk replacers were formulated to contain 20% CP and 20% fat. Plasma was added to milk replacers to provide 0 or 25% of CP and replaced whey protein. Calves were fed colostrum for 3 d and then milk replacer (10% of BW/d) for 56 d. Initial mean BW was 38.0 kg. Commercial calf starter was offered for ad libitum consumption throughout the study. Composition of the milk replacer had no effect on weekly BW, BW gain, intake of milk replacer or calf starter, efficiency of BW gain, or fecal scores. Mean BW gain during the 56-d study was 473 g/d, and mean BW at 56 d was 65.8 kg. Calves consumed 534 and 575 g of DM/d of milk replacer and calf starter, respectively, during the 56-d trial. Inclusion of plasma proteins at 25% of CP supported growth equal to that of whey protein.
摘要译文
在两个地点的荷斯坦犊牛（n \x3d 68; 40头小母牛）被用于评估添加血浆蛋白对牛奶替代品对生长，摄入量，饲料效率和粪便评分的影响。牛奶代用品配制成含有20％CP和20％脂肪。将血浆加入牛奶替代品中以提供0或25％的CP并替代乳清蛋白。犊牛喂饲初乳3 d，然后换牛奶（10％BW / d）56 d。初始平均BW为38.0千克。在整个研究中提供商业小腿起动器以供随意消费。牛奶代用品的组成对每周体重，体重增加，代乳粉或小腿发酵剂的摄入量，体重增加效率或粪便分数没有影响。在56天研究期间平均体重增加为473克/天，56天平均体重为65.8公斤。在56天的试验期间，犊牛分别消耗了534和575克DM / d代乳品和小腿发酵剂。含有25％CP的血浆蛋白质支持的生长等于乳清蛋白质。
J.D.QuigleyIII[*];J.K.Bernard[†];. Milk Replacers with or Without Animal Plasma for Dairy Calves[J]. Journal of Dairy Science, 1996,79(10): 1881-1884