Dezfouli M R Mokhber, Rezazadeh F, Rabbani M, Zahraai S T, Seifi H A
1Department of Clinical Sciences, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran.
2Department of Clinical Sciences, Faculty of Veterinary Medicine, University of Tabriz, Tabriz, Iran.
Comp Clin Path. 2007;16(2):127-130. doi: 10.1007/s00580-006-0652-0. Epub 2006 Nov 17.
One hundred and twenty healthy Holstein calves were assigned randomly at birth to one of four groups; each group contained 30 calves and the calves were received as follows: group A, 85 ± 5 g of lyophilized colostrum powder dissolved in 3 kg of whole milk; group B, 85 ± 5 g of spray-dried colostrum powder dissolved in 3 kg of whole milk; group C, 750 ml frozen and thawed colostrum in 3 kg of whole milk, and group D, only 3 kg of whole milk without colostrum supplement. Each group was subdivided into 3 sub-groups of 10 calves as follows: calves fed colostrum supplement at 24 or 48 or 72 h after birth. All calves fed fresh colostrum within 6 h after birth at the amount of 5% of BW by bottle. Calves which were fed lyophilized colostrum supplement had a significant lower incidence of diarrhea in comparison to control calves. In addition, calves were received lyophilized colostrum supplement at 24 h after birth showed less incidence of diarrhea than calves fed the supplement at 48 and 72 h. According to the results of present study providing lyophilized colostrum supplement at 24 h after birth might have been preventive effect on calf diarrhea. The spray-dried colostrum supplement had not the same effect.
120头健康的荷斯坦犊牛在出生时被随机分配到四组中的一组；每组包含30头犊牛，犊牛的处理方式如下：A组，将85±5克冻干粉状初乳溶解于3千克全脂牛奶中；B组，将85±5克喷雾干燥初乳粉溶解于3千克全脂牛奶中；C组，将750毫升冷冻解冻初乳加入3千克全脂牛奶中，D组，仅3千克全脂牛奶，不补充初乳。每组再细分为3个亚组，每组10头犊牛，如下：犊牛在出生后24小时、48小时或72小时喂食初乳补充剂。所有犊牛在出生后6小时内通过奶瓶喂食新鲜初乳，喂食量为体重的5%。与对照犊牛相比，喂食冻干粉状初乳补充剂的犊牛腹泻发生率显著较低。此外，出生后24小时接受冻干粉状初乳补充剂的犊牛腹泻发生率低于在48小时和72小时喂食补充剂的犊牛。根据本研究结果，出生后24小时提供冻干粉状初乳补充剂可能对犊牛腹泻有预防作用。喷雾干燥初乳补充剂没有相同的效果。
