Kuehn C S, Otterby D E, Linn J G, Olson W G, Chester-Jones H, Marx G D, Barmore J A
Department of Animal Science, University of Minnesota, St. Paul 55108.
J Dairy Sci. 1994 Sep;77(9):2621-9. doi: 10.3168/jds.S0022-0302(94)77203-9.
At three locations, 120 calves were fed a high fat milk replacer at 10% of birth weight from d 5 through 13. On d 14, calves were assigned randomly within sex and date of birth to a 2 x 2 factorial arrangement of treatments. Treatments were (on a DM basis) high fat milk replacer (21.6%) and high fat starter (7.3%), high fat milk replacer (21.6%) and low fat starter (3.7%), low fat milk replacer (15.6%) and high fat starter (7.3%), and low fat milk replacer (15.6%) and low fat starter (3.7%). Milk replacer was fed at 8% of birth weight/d from d 14 to 35 and at 4% of birth weight/d from d 36 to 42. High fat replacer depressed DMI before and after weaning. High fat starter depressed DMI after weaning. Before weaning, calves gained more BW when fed low fat replacer. Calves fed low fat starter gained more BW after weaning. On d 56, BW were highest for calves fed low fat replacer and starter and lowest for those fed high fat replacer and starter. Growth or health of calves was not improved by fat addition to the diet.
在三个地点，120头犊牛从第5天到第13天被喂食高脂肪代乳粉，喂食量为出生体重的10%。在第14天，根据性别和出生日期将犊牛随机分配到2×2析因处理组。处理方式为（以干物质计）高脂肪代乳粉（21.6%）和高脂肪开食料（7.3%）、高脂肪代乳粉（21.6%）和低脂肪开食料（3.7%）、低脂肪代乳粉（15.6%）和高脂肪开食料（7.3%）以及低脂肪代乳粉（15.6%）和低脂肪开食料（3.7%）。从第14天到第35天，代乳粉的喂食量为出生体重的8%/天，从第36天到第42天为出生体重的4%/天。高脂肪代乳粉在断奶前后降低了干物质采食量。高脂肪开食料在断奶后降低了干物质采食量。断奶前，喂食低脂肪代乳粉的犊牛体重增加更多。喂食低脂肪开食料的犊牛在断奶后体重增加更多。在第56天，喂食低脂肪代乳粉和开食料的犊牛体重最高，而喂食高脂肪代乳粉和开食料的犊牛体重最低。日粮中添加脂肪并没有改善犊牛的生长或健康状况。
