郭爽 王丽学 王文杰 潘振亮 孟庆江 王永颖 王煦 曹学浩 周天琪 刘景喜

摘 要：为弥补牛奶中缺乏的维生素和微量元素等营养成分，本试验为哺乳犊牛设计了牛奶或酸化奶补充料——“乳佳”，以普通酸化奶为对照组，添加乳佳的酸化奶饲喂犊牛为处理组，记录犊牛采食量，测量犊牛各阶段体重、体尺，并监测犊牛腹泻发病情况。结果表明：乳佳的添加对3～45日龄和46～60日龄犊牛酸化奶采食量无显著影响，但显著增加了60日龄犊牛体重，并将犊牛腹泻率降低了3.75个百分点，说明在酸化奶中添加乳佳饲喂犊牛能够促进犊牛生长同时降低腹泻发病率。

关键词：犊牛；酸化奶；乳佳；生长指标；腹泻

中图分类号：S823.4 文献标识码：A DOI 编码：10.3969/j.issn.1006-6500.2018.04.009

Effects of "Rujia" Additive in Acidified Milk on Growth Indices and Diarrhea in Calves

GUO Shuang1，WANG Lixue2，WANG Wenjie2，PAN Zhenliang2，MENG Qingjiang1，WANG Yongying1，WANG Xu1，CAO Xuehao1，ZHOU Tianqi3，LIU Jingxi2

（1.Dairy Industry Development Service Center of Tianjin， Tianjin 300210， China； 2.Tianjin Animal Science and Veterinary Research Institute， Tianjin 300381， China； 3.Tianjin Huize Animal Husbandry Company Limited， Tianjin 300273， China）

Abstract： An additive — "Rujia" was designed for calves， which could increase the vitamins and trace elements lacked in milk or acidified milk. The experiment was conducted to study the effects of "Rujia" additive in acidified milk on growth indices and diarrhea in calves， and the ordinary acidified milk was as control. The results showed that： compared with the control， adding "Rujia" had no significant influence on the acidified milk intake both in age 3～45 days and 46～60 days of calves， while the calf weight of age 60 days had a significant increase and the calves diarrhea rate was reduced by 3.75 percentages， indicating that "Rujia" additive in acidified milk could improve the growth of calves and reduce the incidence of diarrhea.

Key words： calves； acidified milk； Rujia； growth indices； diarrhea

犊牛健康培育是影响奶牛成年体型、生理机能和健康状况[1-2]，以及后期生产性能发挥的关键因素[3]，满足犊牛生长阶段营养需求是犊牛培育的基础。酸化奶是在常乳中加入食品级酸度调节剂制备的低pH值乳制品，可通过改善犊牛血液指标、胃肠道黏膜形态和发育情况，提高犊牛对日粮营养物质的消化率，从而改善哺乳期犊牛生长性能[4]，课题组前期酸化奶对犊牛血液指标的影响试验亦表明，酸化奶有利于犊牛的蛋白代谢和脂肪沉积[5]。目前，酸化奶哺喂犊牛经实践推广，可提高犊牛日增重并降低腹泻的发病率[3，6-9]，还可降低劳动强度和犊牛的饲养成本[3，6-7]。

但鲜牛奶或由鲜牛奶制作的酸化奶中某些成分如脂溶性维生素、微量元素和B族……