Banks W, Clapperton J L, Ferrie M E, Wilson A G
J Dairy Res. 1976 Jun;43(2):213-8. doi: 10.1017/s0022029900015764.
The effects of supplementing a basal diet, in which the low level of fatty acids limited milk production, with soya oil, a palm oil/palmitic acid mixture and tallow, on the yield of milk and of its constituents, and on the composition of the milk, are reported. The yields of milk and milk fat were greatly increased by all the oil-supplemented diets; the mean daily yield of solids-not-fat (SNF) was also increased, but supplementation with soya oil caused the yield of crude protein (CP) to decrease, whereas the other fat-rich concentrate mixtures gave the same mean yield of protein as did the low-fat, control diet. All 3 oil-supplemented diets lowered the proportion of CP in the milk, but the SNF content was unchanged by any treatment. Dietary soya oil tended to lower the proportion of fat in the milk, whilst the palm oil/palmitic acid mixture raised it, with the tallow exerting no effect. The results are discussed in relation to previous work in which these dietary oils have been used, but in which the intake of fatty acids from the control diets did not limit milk production to the extent reported here.
本文报告了在基础日粮（其中脂肪酸含量低限制了牛奶产量）中添加大豆油、棕榈油/棕榈酸混合物和牛脂，对牛奶及其成分产量以及牛奶组成的影响。所有添加油脂的日粮都使牛奶和乳脂产量大幅增加；非脂固形物（SNF）的平均日产量也有所增加，但添加大豆油导致粗蛋白（CP）产量下降，而其他富含脂肪的浓缩混合物的蛋白质平均产量与低脂对照日粮相同。所有三种添加油脂的日粮都降低了牛奶中CP的比例，但任何处理都未改变SNF含量。日粮中的大豆油倾向于降低牛奶中的脂肪比例，而棕榈油/棕榈酸混合物则提高了脂肪比例，牛脂则没有影响。结合之前使用这些日粮油的研究工作对结果进行了讨论，但之前对照日粮中脂肪酸的摄入量并未像本文报道的那样限制牛奶产量。
