Effects of spray-dried animal plasma in calf milk replacer on health and growth of dairy calves
Effects of spray-dried animal plasma in calf milk replacer on health and growth of dairy calves
复制标题
DOI：
10.3168/jds.s0022-0302(03)73637-6
复制
发表时间：
2003-02-01
影响因子：
3.5
通讯作者：
Wolfe, TM
中科院分区：
文献类型：
--
作者：
Quigley, JD;Wolfe, TM
从当地奶牛场购买的荷斯坦公犊（n = 120）饲喂3种犊牛乳添加剂中的一种42 d。配制实验乳浓缩物以含有乳清蛋白浓缩物（WPC）作为主要蛋白质源或WPC加5%喷雾干燥的牛血浆（SDBP）或喷雾干燥的猪血浆（SDPP）。将SDPP加热以除去热不溶性物质并提供具有相似IgG含量的产物。小牛还饲喂商业小牛发酵剂和水，供自由采食。测定采食量、体重变化、饲料效率、发病率和死亡率。饲喂WPC、SDBP、.和SDPP处理。当饲喂SDBP或SDPP时，以小牛腹泻的天数测量的发病率降低了30%。在42天的研究期间，当饲喂含有WPC、SDBP和SDPP的商业小牛乳添加剂时，小牛分别腹泻6.9、3.9和4.7天。饲喂SDBP或SDPP时，粪便评分趋于降低，饲料效率趋于提高。在为期42天的研究中，当小牛饲喂SDBP或SDPP时，总干物质的平均摄入量更大，饲喂WPC、SDBP和SDPP的小牛分别为661、710和684 g/d。从第0天到第42天的平均体重增量分别为231、261和218 g/d。在研究的前28天，饲喂SDPP的小牛倾向于具有较低的BW增益。然而，从第1天到第28天的日增重差异仅为39 g/d。将SDBP或SDPP添加到牛奶中可降低牛奶喂养的奶牛的发病率和死亡率。
Male Holstein calves (n = 120) purchased from local dairy farms were fed one of three calf milk replacers for 42 d. Experimental milk replacers were formulated to contain whey protein concentrate (WPC) as the primary protein source or WPC plus 5% spray-dried bovine plasma (SDBP) or spray-dried porcine plasma (SDPP). The SDPP was heated to remove heat-insoluble materials and provide products with similar IgG content. Calves were also fed commercial calf starter and water for ad libitum consumption. Intake, change in body weight (BW), feed efficiency, morbidity and mortality were determined. Mortality was 10, 3, and 2 in calves fed WPC, SDBP,. and SDPP treatments, respectively. Morbidity, measured as the number of days that calves had diarrhea was reduced by 30% when SDBP or SDPP were fed. Calves had diarrhea for 6.9, 3.9, and 4.7 d during the 42-d study when fed commercial calf milk replacer containing WPC, SDBP, and SDPP, respectively. Fecal scores tended to be reduced and feed efficiency tended to be improved when SDBP or SDPP were fed. Mean intakes of total dry matter during the 42-d study were greater when calves were fed SDBP or SDPP and were 661, 710, and 684 g/d for calves fed WPC, SDBP, and SDPP, respectively. Mean BW gains from d 0 to 42 were 231, 261, and 218 g/d, respectively. Calves fed SDPP tended to have lower BW gain during the first 28 d of the study. However, difference in daily BW gain from d 1 to 28 was only 39 g/d. Inclusion of SDBP or SDPP in milk replacer reduced morbidity and mortality of milk-fed dairy calves.