Muller L D, Ellinger D K
J Dairy Sci. 1981 Aug;64(8):1727-30. doi: 10.3168/jds.S0022-0302(81)82754-3.
Colostral immunoglobulin concentrations were compared among five breeds of dairy cows. Colostrum samples (3 to 4 kg) were obtained immediately after parturition from 19 Ayrshire, 17 Brown Swiss, 12 Guernsey, 19 Holstein, and 5 Jersey cows. Average total colostral immunoglobulin was 8.1, 6.6, 6.3, 5.6, and 9.0% for them. Colostrum from Jerseys had the highest immunoglobulin G (6.65%), immunoglobulin A (1.86%), and immunoglobulin M (.53%) of all breeds. Colostrum from Holsteins was lowest in immunoglobulin G (4.12%) whereas that from Guernseys was lowest in immunoglobulin A (.90%) and immunoglobulin M (.39%). Breeds may differ, and the high calf mortality and health problems frequently reported for Guernseys may be related to the low immunoglobulins A and M in colostrum. Concentration of colostral immunoglobulin by calving number was examined over breeds for 23, 16, 17, and 14 cows by first, second, third, and fourth or later calvings. Colostral immunoglobulin was lower from first-calf heifers (5.68%) than from third (7.91%) and fourth (7.53%) parity cows. Colostral immunoglobulins A and G tended to be lower in first lactations.
对五个奶牛品种的初乳免疫球蛋白浓度进行了比较。在分娩后立即从19头艾尔夏牛、17头瑞士褐牛、12头根西牛、19头荷斯坦牛和5头泽西牛采集初乳样本（3至4千克）。它们的平均初乳总免疫球蛋白分别为8.1%、6.6%、6.3%、5.6%和9.0%。泽西牛的初乳中免疫球蛋白G（6.65%）、免疫球蛋白A（1.86%）和免疫球蛋白M（0.53%）在所有品种中最高。荷斯坦牛的初乳中免疫球蛋白G最低（4.12%），而根西牛的初乳中免疫球蛋白A（0.90%）和免疫球蛋白M（0.39%）最低。不同品种可能存在差异，根西牛经常报告的高犊牛死亡率和健康问题可能与初乳中免疫球蛋白A和M含量低有关。按产犊次数对初乳免疫球蛋白浓度进行了品种间检查，头胎、二胎、三胎和四胎及以后产犊的奶牛分别有23头、16头、17头和14头。头胎母牛的初乳免疫球蛋白（5.68%）低于三胎（7.91%）和四胎（7.53%）母牛。初乳中的免疫球蛋白A和G在头胎泌乳期往往较低。
