CAJ | 학술논문

先前研究表明金川牦牛在肋骨数上出现变异，为明确14肋与15肋金川牦牛产奶量和乳成分的差异，本试验选择初产和经产的不同肋骨数金川牦牛各6头，统计其6~9月份的月产奶量，同时进行乳成分分析。试验结果表明：15肋牦牛（初产和经产）产奶量均高于14肋牦牛；15肋牦牛经产个体在6~8月份产奶量高于初产个体；除9月份以外，15肋牦牛6~8月份乳脂率极显著高于14肋牦牛(P<0.01)；15肋牦牛6月份乳糖、非脂乳固体和乳蛋白含量都显著性高于14肋牦牛(P<0.05)。
선전연구표명금천모우재륵골수상출현변이，위명학14륵여15륵금천모우산내량화유성분적차이，본시험선택초산화경산적불동륵골수금천모우각6두，통계기6~9월빈적월산내량，동시진행유성분분석。시험결과표명：15륵모우（초산화경산）산내량균고우14륵모우；15륵모우경산개체재6~8월빈산내량고우초산개체；제9월빈이외，15륵모우6~8월빈유지솔겁현저고우14륵모우(P<0.01)；15륵모우6월빈유당、비지유고체화유단백함량도현저성고우14륵모우(P<0.05)。
Previous research showed that a mutations occurred on the number of ribs in Jinchuan yak. To compare the difference of milk production and composition between fourteen and iffteen ribs of Jinchuan yak, we selected 24 Jinchuan yak in difference milk fetal period and ribs, and recorded daily milk production from June to September, and analyzed milk composition. The result indicate that the milk production of iffteen ribs is higher than of fourteen ribs, and the primipara iffteen ribs yak is lower than multiparity from June to august, and the butterfat percentage of iffteen ribs yak is extremely signiifcantly (P<0.01) higher than of fourteen ribs yak from June to August, and lactose, non-fat and protein percentage of iffteen ribs yak signiifcantly (P<0.05) higher than of iffteen ribs yak in June.