The objective of study was to determine the effects of butterfat replaced by different fat sources in milk replacer on serum index,slaughter performance and organ development in preweaning calves.Sixty newborn Holstein calves were assigned to one of five dietary treatments,which have the same nutrient with only different fat sources,with a randomized block designed as follows:butterfat as sole fat sources in milk replacer (W100);50％ butterfat was replaced by coconut oil (C50);100％ butterfat was replaced by coconut oil (C100);50％ butterfat was replaced by palm oil (P50);100％ butterfat was replaced by palm oil (P100).The results showed that The P100 significantly decreased the serum GLU (P＜0.05);The slaughter performance did not significantly different among the dietary treatments;The P100 significantly decreased the spleen and small intestine weight (P＜0.05).In summary,the replacement of butterfat by coconut oil and palm oil in milk replacer had little effect on the normal growth and metabolism and tissue and organs development of preweaning calves.%本试验旨在研究代乳品中不同来源脂肪对哺乳期犊牛血清指标、屠宰性能和组织器官发育的影响.选取60头初生荷斯坦公犊牛,设5个处理组,每组12个重复,各组营养水平相同,5个代乳品处理组分别为全脂奶粉提供100％的脂肪(W100组)、椰子油替代部分全脂奶粉以提供50％的脂肪(C50组)、椰子油提供100％的脂肪(C100组)、棕榈油替代部分全脂奶粉以提供50％的脂肪(P50组)、棕榈油提供100％的脂肪(P100组).预试期7d,正试期42 d.结果表明:P100组犊牛血清葡萄糖浓度显著低于其他处理组(P＜0.05);使用椰子油或棕榈油替代全脂奶粉对犊牛屠宰性能的影响差异不显著(P＞0.05);P100组犊牛的脾脏鲜重和小肠鲜重显著低于其他组(P＜0.05).综上所述,使用椰子油或棕榈油替代部分全脂奶粉并不影响哺乳期犊牛机体的正常生长、代谢和组织器官发育.
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