Ulbrich M, Boldt E, Richter K, Torzewski M
Sektion Tierproduktion und Veterinärmedizin, Karl-Marx-Universität Leipzig.
Arch Tierernahr. 1987 Sep;37(9):777-89. doi: 10.1080/17450398709428247.
Male calves between 15 and 26 days old and with a live weight between 45 and 46 kg received dried skim milk dissolved in water plus fat concentration from lard--suet mixtures made with a synthetic emulsifier of the type ethoxylated partial ester with and without soybean lecithin supplement. One group received bone fat with an emulsifier as sole fat component. In the course of 9 experiment weeks the calves of the lard--suet group without lecithin reached an average daily weight gain of 710 g, which was not significantly better than the gains of 689 g of the lard--suet group with lecithin and of 674 g of the bone fat group. The calves of the lard--suet group with lecithin did not digest the feed fat significantly better than the calves in the other two groups. The quota of fatty acids in the feed distinctly influenced the composition of the fatty acids in the intestines, the kidneys and the hypodermis. With the example of suet the general relationship between the fatty acid patterns of the feed and body fats are recognizable, with the fatty acids C 16:0, C 18:2 and C 18:3 having a lower and C 16:1, C 18:0 and C 18:1 having a higher quota in the suet than in the feed fat. Due to the application of high amounts of bone fat, vegetable oil or sea animal fat there are deviations from this rule. There is a higher quota of linolenic acid in the suet of the calves than in butter fat but a lower quota than in foreign fat.
15至26日龄、活重45至46千克的雄性犊牛，饲喂溶于水的脱脂奶粉，并添加由猪油-板油混合物制成的脂肪，该混合物添加了乙氧基化部分酯型合成乳化剂，有的还添加了大豆卵磷脂。一组仅将骨脂与乳化剂作为脂肪成分。在9周的试验过程中，未添加卵磷脂的猪油-板油组犊牛平均日增重710克，这并不显著高于添加卵磷脂的猪油-板油组的689克日增重以及骨脂组的674克日增重。添加卵磷脂的猪油-板油组犊牛对饲料脂肪的消化效果并不显著优于其他两组犊牛。饲料中的脂肪酸配额明显影响肠道、肾脏和皮下组织中的脂肪酸组成。以板油为例，可以看出饲料脂肪酸模式与体脂肪之间的一般关系，即板油中C 16:0、C 18:2和C 18:3脂肪酸的配额低于饲料脂肪，而C 16:1、C 18:0和C 18:1脂肪酸的配额高于饲料脂肪。由于大量使用骨脂、植物油或海动物脂肪，会出现偏离此规律的情况。犊牛板油中亚麻酸的配额高于乳脂，但低于外来脂肪。
