Dahlborn K
J Dairy Res. 1987 May;54(2):153-63. doi: 10.1017/s0022029900025292.
When four goats were subjected to total water deprivation for 48 h once in early lactation and once in mid lactation and their voluntary food intake and effects on milk secretion were observed, milk volume decreased and lactose and fat concentration increased during both periods. However, when the goats were then fed the mean of their own food intake at the two previous water deprivation experiments, and were left free access to water, it was found that decreased food consumption had only a minor influence on milk secretion. When six goats were subjected to 48 h of food deprivation and six to 48 h of water deprivation, milk secretion decreased, but the reduction was delayed and of smaller magnitude during water deprivation. During food deprivation lactose concentration decreased and the milk protein and fat increased; the fatty acid composition changed from a greater proportion of short-chain to more long-chain fatty acids. During water deprivation milk fat and lactose concentrations increased, and only after 44 h did a change from short-chain to a larger proportion of long-chain fatty acids become evident. These experiments indicate that not only food intake, but also water intake are concerned with milk production.
在初乳期和中期分别对4只山羊进行一次48小时的完全禁水处理，并观察它们的自愿采食量及其对泌乳的影响。在这两个时期，产奶量均下降，乳糖和脂肪浓度均升高。然而，当在之前两次禁水实验中按照山羊自身采食量的平均值投喂，并让它们自由饮水时，发现采食量减少对泌乳的影响很小。对6只山羊进行48小时的禁食和对另外6只进行48小时的禁水处理，泌乳量均下降，但禁水期间泌乳量下降出现延迟且幅度较小。禁食期间乳糖浓度下降，乳蛋白和脂肪增加；脂肪酸组成从短链脂肪酸比例较高转变为长链脂肪酸比例更高。禁水期间乳脂肪和乳糖浓度升高，并且仅在44小时后从短链脂肪酸转变为更大比例的长链脂肪酸才变得明显。这些实验表明，不仅采食量，而且饮水量都与产奶量有关。
