Akinsoyinu A O, Mba A U, Olubajo F O
J Dairy Res. 1977 Feb;44(1):57-62. doi: 10.1017/s0022029900019920.
Six adult West African dwarf does, about 2 1/2 years old and weighing from 24 to 29 kg, were kept for 18 weeks/lactation, and for 2 lactation periods in all. During these periods the does were hand-milked twice daily and the daily samples were bulked for each animal for subsequent analysis. Milk yields for the period were low. Colostrum was characterized by a high content of total solids of 19-2%, fat 8-3%, total protein 5-1% and a gross energy of 517 kJ/100 g milk, but a low lactose content of 4-9%. The composition tended to approach that of mature goat milk between the second and third d after parturition. The mature goat's milk contained higher mean percentages of fat (6-9) and lactose (6-3) than any temperate breeds of goats and indigenous dairy cattle, but their protein (3-9%) and total ash (0-8%) contents were comparable with any temperate breeds of goats. The percentage protein, lactose, fat and total solids declined slightly with advance in lactation and there was a steady fall in milk yield which was statistically significant (P less than 0-01).
选用了6只成年西非矮山羊母羊，年龄约2.5岁，体重24至29千克，饲养18周/哺乳期，共经历2个泌乳期。在此期间，每天对母羊进行两次人工挤奶，并将每只羊每天的奶样混合，用于后续分析。该时期的产奶量较低。初乳的特点是总固体含量高，为19.2%，脂肪8.3%，总蛋白5.1%，每100克奶的总能为517千焦，但乳糖含量低，为4.9%。产后第二至第三天，其成分趋于接近成熟山羊奶。成熟山羊奶的脂肪（6.9%）和乳糖（6.3%）平均百分比高于任何温带品种的山羊和本地奶牛，但其蛋白质（3.9%）和总灰分（0.8%）含量与任何温带品种的山羊相当。随着泌乳期推进，蛋白质、乳糖、脂肪和总固体的百分比略有下降，产奶量稳步下降，具有统计学意义（P<0.01）。
