摘要
本文旨在通过研究不同营养水平代乳粉对犊牛生产性能、腹泻率的影响,筛选出犊牛适宜代乳粉配方。选用荷斯坦犊牛24头,按照体重、出生日期相近原则分为4组,每组6头。对照组以牛奶哺喂;试验组分别用不同能量和不同蛋白质水平的代乳粉哺喂,分为高能量高蛋白组(HEHP)(23.74MJ/kg,27.20%);中能量中蛋白组(MEMP)(21.76MJ/kg,24.80%);低能量低蛋白组(LELP)(19.78MJ/kg,22.40%)。试验表明,对照组、HEHP组、MEMP组、LELP组的全期平均日增重分别为352.68、419.64、357.14和292.41g;HEHP组的平均日增重极显著高于LELP组(P<0.01),显著高于对照组和MEMP组(P<0.05),而MEMP组与对照组无明显差异(P>0.05)。饲喂代乳粉的3个试验组中,HEHP组犊牛腹泻率为0,低于对照组的2.08%、LELP组的4.46%,和MEMP组的1.49%。综上所述,在本试验条件下,高能量高蛋白(消化能23.74MJ/kg,粗蛋白质27.20%)组代乳粉饲喂效果最佳,试验全期犊牛平均每头每日进食的消化能和粗蛋白质分别为19.60MJ、200.08g,可以作为实际生产中犊牛培育的参考。
This trial was conducted to study the effects of milk replacer at different nutrient levels on growth performance and diarrhea rate in calves and choose the best milk replacer which fits into growth of calves. Twenty four Holstein calves were randomly divided into four groups （six for each group） based on body weight and birth similarity. The control group, fed with milk; the others fed with three kinds of milk replacer with different digestible energy and different crude protein： the high digestible energy and high crude protein （HEHP）, which nutrient level was 23.74 MJ/kg, 27.20% ;the middle digestible energy and middle crude protein （MEMP）, which nutrient level was 21.76 MJ/kg,24.80%;the low digestible energy and low crude protein （LELP）, which nutrient level was 19.78MJ/kg, 22.40%. The result showed： during the whole experiment, the ADG of control group, HEHP group, MEMP group and LELP group was 352.68,419.64,357.14 and 292.41g, respectively. The ADG of HEHP group was evidently higher than that of LELP group （P〈0.01）; the ADG of MEMP group was higher than that of control group and MEMP group （P〈0.05） ; but the difference of ADG of MEMP group and that of control group were not significant （P〉0.05）. In three groups feed with milk replacer, the diarrhea rate of HEHP group was 0%, and lower than that of control group that was 2.08% ,LELP group that was 4.46% ,MEMP group that was 1.49%. Analysis indicated that HEHP group （digestible energy：23.74 MJ/kg, crude protein：27.20% ） was the best among the three milk replacers, the average digestible energy （DE） and crude protein （CP） intake of calves during the whole experiment were 19.60 MJ/（d ·head） and 200.08 g/（d· head） ,and may be regarded as the reference in practice.
出处
《动物营养学报》
CAS
CSCD
北大核心
2007年第2期124-128,共5页
CHINESE JOURNAL OF ANIMAL NUTRITION
基金
"十五"国家重大科技专项课题--"华北农区奶业现代化生产技术集成与产业化示范"(2002BA518A10)
关键词
犊牛
代乳粉
生长发育
腹泻
Calf
Milk replacer
Growth performance
Diarrhea rate
