甘油对围产期奶牛能量平衡和肝脏糖原合成的影响

草业学报 ›› 2013, Vol. 22 ›› Issue (1): 252-259.

甘油对围产期奶牛能量平衡和肝脏糖原合成的影响

王聪¹,刘强^1*,张延利¹,张拴林¹,裴彩霞¹,白元生²,师周戈²,刘晓妮²

1.山西农业大学动物科技学院,山西太谷 030801;
2.山西省生态畜牧产业管理站,山西太原 030001

收稿日期:2011-12-20 出版日期:2013-01-25 发布日期:2013-02-20
通讯作者: E-mail:liuqiangabc@163.com
作者简介:王聪(1973-),女,山西寿阳人,副教授,博士。E-mail:wangdx0321@163.com
基金资助:
山西省科技攻关计划(20100312014),国家奶牛产业体系雁门关综合试验站(nycytx-08)和山西省现代牛产业技术体系(2011-05)项目资助。

Effects of glycerol on energy balance and concentration of glucose in the liver during the peripartum period in dairy cows

WANG Cong¹, LIU Qiang¹, ZHANG Yan-li¹, ZHANG Shuan-lin¹, PEI Cai-xia¹, BAI Yuan-sheng², SHI Zhou-ge², LIU Xiao-ni²

1.College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu 030801, China;
2.Shanxi Province Ecology and Livestock Industry Management Station, Taiyuan 030001, China

Received:2011-12-20 Online:2013-01-25 Published:2013-02-20

摘要/Abstract

摘要： 为了研究甘油对围产期奶牛能量平衡和肝脏糖原合成的影响,选用24头体重(674.6±13.8) kg、胎次(2.5±0.5)、上一泌乳期305 d产奶量(7 412±15) kg和预产期(23.8±0.3) d的经产奶牛,随机分为4组,从分娩前19 d开始分别在基础日粮中添加甘油0,100,200和300 g/d。结果表明,与对照组相比,添加甘油200和300 g/d,显著提高了奶牛分娩后7,21和35 d体况评分,显著改善了奶牛分娩前14 d和分娩后7,21和35 d的能量平衡。200和300 g/d组奶牛分娩前14 d胰岛素浓度和分娩后7,21和35 d奶牛血糖和胰岛素浓度显著高于对照组(P<0.05)。200和300 g/d组奶牛分娩后7,21和35 d血浆游离脂肪酸和β-羟丁酸浓度显著低于对照组和100 g/d组(P<0.05)。200和300 g/d组奶牛分娩后7,21和35 d肝脏糖原含量和糖异生途径限速酶活性显著高于对照组(P<0.05)。结果显示在日粮中添加甘油能够加强肝脏葡萄糖异生作用,改善奶牛能量平衡,适宜添加量为200 g/d。

Abstract: To observe the effects of glycerol on energy balance, blood parameter, glucose and adipose concentrations in the liver during the peripartum period in dairy cows, multiparous Holstein dairy cows with similar body weights (674.6±13.8 kg), lactation numbers (2.5±0.5), corrected milk yields in the last lactation (7 412±15 kg) and expected calving dates (23.8±0.3 d) were allocated into four treatments at random. Graded levels (0, 100, 200, and 300 g/d) of glycerol were supplemented in the four treatments from day 19 peripartum. Body condition score at 7, 21 and 35 d postpartum was increased, body weight loss from 7 to 35 d postpartum was reduced, energy balance at 14 d peripartum and 7, 21 and 35 d postpartum was improved significantly (P<0.05) by the 200 g/d and 300 g/d treatment compared with the 0 g/d treatment. Cows receiving 200 g/d and 300 g/d glycerol had a higher insulin concentration at 14 d peripartum and higher plasma glucose and insulin concentrations at 7, 21 and 35 d postpartum than the 0 g/d treatment (P<0.05). They had lower plasma NEFA and β-hydroxybutyrate at 7, 21 and 35 d postpartum than the 0 g/d and 100 g/d treatment (P<0.05) while 200 g/d and 300 g/d glycerol supplementation increased the contents of glycogen and key regulatory enzymes of gluconeogenesis in the liver compared with the 0 g/d glycerol treatment (P<0.05). Glycerol supplementation was beneficial to peripartum cows in enhancing the gluconeogenesis and improving energy balance status. The optimum dose was about 200 g per cow per day.

中图分类号:

S823.9⁺1

王聪,刘强,张延利,张拴林,裴彩霞,白元生,师周戈,刘晓妮. 甘油对围产期奶牛能量平衡和肝脏糖原合成的影响[J]. 草业学报, 2013, 22(1): 252-259.

WANG Cong, LIU Qiang, ZHANG Yan-li, ZHANG Shuan-lin, PEI Cai-xia, BAI Yuan-sheng, SHI Zhou-ge, LIU Xiao-ni. Effects of glycerol on energy balance and concentration of glucose in the liver during the peripartum period in dairy cows[J]. Acta Prataculturae Sinica, 2013, 22(1): 252-259.

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