本文選題：頭胎奶牛 + 經(jīng)產(chǎn)奶牛��； 參考：《中國(guó)畜牧獸醫(yī)》2017年08期

【摘要】：為比較頭胎奶牛與經(jīng)產(chǎn)奶牛在圍產(chǎn)階段生產(chǎn)性能和血清生化指標(biāo)的差異,本研究選取臨床健康的頭胎和經(jīng)產(chǎn)奶牛各10頭,在同等條件下飼喂全混合日糧,于預(yù)產(chǎn)期前7、4、2、1d及產(chǎn)后0、1、2、4、7、14d晨喂前尾靜脈采血并分離血清,測(cè)定血糖、甘油三酯和血鈣濃度,產(chǎn)后11~40d記錄產(chǎn)奶量,于產(chǎn)后第30天采集乳樣,測(cè)定乳成分和體細(xì)胞數(shù)。結(jié)果顯示,頭胎奶牛與經(jīng)產(chǎn)奶牛血清甘油三酯、乳脂、乳蛋白、乳糖和乳干物質(zhì)等指標(biāo)均無(wú)顯著差異(P0.05);經(jīng)產(chǎn)牛產(chǎn)后日均產(chǎn)奶量和乳體細(xì)胞數(shù)均顯著高于頭胎牛(P0.05);在分娩前第4天和分娩后第2、4天時(shí),頭胎牛血糖濃度顯著高于經(jīng)產(chǎn)牛(P0.05),但在分娩時(shí),頭胎牛血糖濃度顯著低于經(jīng)產(chǎn)牛(P0.05);頭胎牛在產(chǎn)前第1、2天、分娩當(dāng)天及產(chǎn)后第2天的血鈣水平顯著高于經(jīng)產(chǎn)牛(P0.05)。
[Abstract]:In order to compare the difference of perinatal performance and serum biochemical indexes between first-born cows and post-parturient cows, 10 first-born cows and 10 cows were fed with total mixed diet under the same conditions. Blood samples were collected from caudal veins at 7 days before delivery and 14 days after delivery. Blood glucose, triglyceride and serum calcium were measured. Milk production was recorded at 1140 days postpartum. Milk samples were collected on the 30th day after delivery. Milk components and somatic cells were measured. The results showed that serum triglyceride, milk fat, milk protein, There was no significant difference in lactose and milk dry matter (P0.05); the average milk yield and the number of milk somatic cells in postpartum cattle were significantly higher than those in the first born cow (P0.05); on the 4th day before delivery and 24 days after delivery, the milk yield and the number of milk body cells were significantly higher than those in the first born cow (P0.05). The blood glucose concentration of the first born cattle was significantly higher than that of the postpartum cattle (P0.05), but the blood glucose concentration of the first fetal cattle was significantly lower than that of the menstrual cattle during delivery (P0.05), and the serum calcium level of the first fetal cattle was significantly higher than that of the menstrual cattle on the 1st second day before delivery, on the day of delivery and on the second day of postpartum (P0.05).
【作者單位】： 北京農(nóng)業(yè)職業(yè)學(xué)院;中國(guó)農(nóng)業(yè)大學(xué)動(dòng)物醫(yī)學(xué)院;
【基金】：北京市自然科學(xué)基金項(xiàng)目(6152005);北京市自然科學(xué)基金項(xiàng)目(6163027) 北京農(nóng)業(yè)職業(yè)學(xué)院院級(jí)科研項(xiàng)目(XY-YF-16-43) 現(xiàn)代農(nóng)業(yè)產(chǎn)業(yè)技術(shù)體系北京奶牛創(chuàng)新團(tuán)隊(duì)項(xiàng)目
【分類號(hào)】：S823

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