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当前位置: 首页 > 文章 > 奶牛血清蛋白多态性及代谢物与生产性能关系的研究 中国农业科学 2001,34 (3) 322-325
Position: Home > Articles > Study on Relationships Between Serum Protein Polymorphism, Blood Metabolites and Production Performance in Beijing Holstein Calves Scientia Agricultura Sinica 2001,34 (3) 322-325

奶牛血清蛋白多态性及代谢物与生产性能关系的研究

作  者：
王毓英;储明星;石万海
单  位：
中国农业科学院畜牧研究所;北京奶牛中心
关键词：
荷斯坦犊牛;运铁蛋白基因型;代谢物;系谱指数
摘  要：
根据系谱指数（ＰＩ：Ｐｅｄｉｇｒｅｅ Ｉｎｄｅｘ），将 ２１９头 ３～６月龄荷斯坦犊牛分成两组。８１头犊牛（１头公牛后代）是具有高系谱指数的后代（ＰＩ平均值为５９０），１３８头犊牛（１头公牛后代）是具有低系谱指数的后代（ＰＩ平均值为３３７）。全部试验牛在禁食３４～３６ｈ后采血，检测血液运铁蛋白（Ｔｆ）基因型、酶和代谢物浓度在两组间的差异，发现运铁蛋白各基因型间系谱指数有明显差异，ＤＤ型显著高于ＡＤ型、ＡＤ型显著高于ＡＡ型；测定血液中总蛋白（ＴＰ）、碱性磷酸酶（ＡＬＰ）、肌酸酐（ＣＲＥ）的合量，其结果在ＰＩ高低组间没有显著差异（Ｐ＞０．０５），但游离脂肪酸（ＦＦＡ）、尿素氮（ＢＵＮ）的浓度在高低组间有较大差异，在禁食后ＦＦＡ浓度在高乳用价值公牛后代高于低乳用价值公牛的后代，ＢＵＮ则相反，而且ＦＦＡ和ＢＵＮ含量在高低组间差异达到极高和高度显著水平（Ｐ＜０．００１和Ｐ＜０．０１），其遗传力较高，与ＰＩ的遗传相关也较高，这一结果表明犊牛在代谢应激期间血液中代谢物浓度的变异与其乳用性能的遗传优势有关，ＦＦＡ和ＢＵＮ两项指标已具备了作为遗传标记的条件，可应用于对公母牛产奶性能的选择。
译  名：
Study on Relationships Between Serum Protein Polymorphism, Blood Metabolites and Production Performance in Beijing Holstein Calves
作  者：
WANG Yu-ying, CHU Ming-xing, SHI Wan-hai (Institute of Animal Science, GAAS ,Beijing 100094; 2Beijing Dairy Cattle Centre ,Beijing 100085)
关键词：
Holstein calves; Transferrin genotypes; Metabolites; Pedigree index for milk production
摘  要：
Beijing Holstein female calves of 3 to 6 months of age were classified into two groups according to pedigree index (P1) for milk production. 81 calves of P1 mean 590 were the offspring of ten bulls, and 138 calves of P1 mean 337 were the offspring of ten bulls. Blood samples of these calves were collected during the 34-36h fasting period. The differences between high and low group for serum transferrin genotypes, enzyme and metabolite concentrations were detected. The results indicated that the P1 differences were significant between transferrin genotypes. P1 of DD was higher (P<0. 01) than P1 of AD, PT of AD was higher (P<0. 05) than PT of AA. The concentrations of total proteins (TP), alkaline phosphatase (ALP), creatinine (CRE) were not different significantly between the high and low PT groups (P >0.05). The concentrations of free fatty acids (FFA) and blood urea nitrogen (BUN) differed significantly between the high and low PT groups. The progeny of high dairy merit bulls had higher levels of FFA (P<0. 001) and lower levels of BUN (P<0. 01) during the fasting period. These results indicated that blood metabolite concentrations during the metabolic stress in the calves have relation to their genetic merit for dairy production. FFA and BUN would be promising as genetic markers to predict genetic merit for milk production in both bulls and cows.

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