Anderson M J
J Dairy Sci. 1975 Dec;58(12):1856-9. doi: 10.3168/jds.S0022-0302(75)84798-9.
Digestion was studied with three groups of four sheep each fed alfalfa hay. Treatments were whey only, whey plus water, and water only. Digestibilities of dry matter for the three rations were 71.3, 69.7, and 62.9%. Digestibilities of whey solids calculated by difference was 86.9% for whey only and 81.6% for whey plus water. Twelve sheep were in three trials to determine the intake of whey, water, and hay consumption. They were assigned to whey only, whey plus water, and water only. Hay, whey, and water consumption was 1.89, 8.73, and 0; 1.88, 7.62, and 1.21; and 2.05, 0, and 6.07 kg per animal daily. Three mature fistulated wether sheep were fed 6 liters of liquid whey daily. Three mature fistulated wether sheep uere fed 6 liters of liquid whey daily, and three similar sheep were fed water only. Rumen liquor samples were taken for analysis of volatile fatty acids at 0, 3, and 6 h after whey feeding on each of three alternate days. Alfalfa hay (1.2 kg/animal daily) was fed after the 6-h sampling. Molar percentage of acetic and valeric acids were lower and for butyric acid was higher for sheep fed whey. Propionic acid, acetate:propionate ratio, and total concentration were not affected significantly by whey feeding. Acetic acid decreased from 0 to 3 h, then partly returned to the prefeeding level at 6 h. The reverse was true for butyric acid. Valeric acid and total concentration of volatile fatty acids decreased from 0 to 6 h. Effects of day were unexplained.
用三组绵羊进行消化研究，每组四只，每只羊均饲喂苜蓿干草。处理方式分别为仅喂乳清、乳清加水和仅喂水。三种日粮的干物质消化率分别为71.3%、69.7%和62.9%。通过差值计算得出，仅喂乳清时乳清固体的消化率为86.9%，乳清加水时为81.6%。用12只绵羊进行了三项试验，以确定乳清、水和干草的摄入量。它们被分为仅喂乳清组、乳清加水组和仅喂水组。每只动物每天的干草、乳清和水的摄入量分别为1.89千克、8.73千克和0千克；1.88千克、7.62千克和1.21千克；以及2.05千克、0千克和6.07千克。给三只成年带瘘管的阉羊每天饲喂6升液体乳清。给三只成年带瘘管的阉羊每天饲喂6升液体乳清，另外三只相似的羊仅喂水。在每隔一天的乳清饲喂后0小时、3小时和6小时采集瘤胃液样本，用于分析挥发性脂肪酸。在6小时采样后饲喂苜蓿干草（每只动物每天1.2千克）。饲喂乳清的绵羊，其乙酸和戊酸的摩尔百分比较低，丁酸的摩尔百分比较高。丙酸、乙酸与丙酸的比例以及总浓度不受乳清饲喂的显著影响。乙酸从0小时到3小时减少，然后在6小时部分恢复到饲喂前水平。丁酸则相反。戊酸和挥发性脂肪酸的总浓度从0小时到6小时降低。日效应无法解释。
