摘要
The objective of this study was to compare performance of calves fed acidified milk replacer or regular (sweet) milk replacer twice daily at 10% of BW. Thirty-seven female Holstein calves were fed replacers reconstituted to 12.5% DM for 4 wk At 28 d, half of the amounts of milk replacer consumed during wk 4 were fed during wk 5 and calves weaned from replacer at d 35 of age. A pelleted starter feed was offered for ad libitum access throughout the 42-d trial. Body weight was recorded at birth, d 3 of age, and weekly thereafter. Fecal consistency scores were recorded. Other parameters were measured on d 3 and 42. Average daily gains (d 3 to 42) for calves fed sweet and acidified milk replacers were .33 and .38 kg/d. Starter consumption was similar for both treatments. Calves fed acidified milk replacer (d 3 to 28) had a lower (1.4 vs. 1.6) fecal consistency score than those fed sweet milk replacer (scale of 1 to 4, 1 = normal and 4 = watery). Benefits of feeding acidified milk replacer at 10% of BW per day may be in reducing the incidence of some infectious scours, although further experiments are needed to verify this.
摘要译文
本研究的目的是比较每天两次喂食酸化代乳粉或常规（甜味）代乳品的小牛的性能，其中B％为10％。将37只雌性荷斯坦牛犊喂养替代物重新配制成12.5％DM，持续4周。在28天，在第5周期间消耗的一半的代乳粉量在第5周期间喂养，并且在第35天时从取代者中断奶。在整个42天的试验中，提供颗粒状的初始饲料用于随意取用。出生时记录体重，年龄为d 3，之后每周记录一次体重。记录粪便一致性评分。其他参数在第3天和第42天测量。喂食甜味和酸化代乳品的小牛的平均日增重（d 3至42）为.33和.38 kg / d。两种治疗的起始消耗量相似。饲喂酸化代乳粉（d 3至28）的犊牛的粪便稠度评分低于喂食甜奶代用品的粪便一致性评分（1至4，1 =正常，4 =水）。以每天10％BW喂食酸化代乳粉的益处可能是降低某些感染性腹泻的发生率，但需要进一步的实验来验证这一点。
E.H.Jaster;G.C.McCoy;T.Tomkins[1];C.L.Davis[2];. Feeding Acidified or Sweet Milk Replacer to Dairy Calves[J]. Journal of Dairy Science, 1990,73(12): 3563-3566