饲料研究2024，Vol.47Issue(8)：92-96,5.DOI:10.13557/j.cnki.issn1002-2813.2024.08.017
西藏改良奶牛低氧适应的血液生理指标与生产性能分析
Analysis on blood physiological indexes and production performance of hypoxic adaptation of Xizang improved dairy cows
摘要
Abstract
The study was to determine the blood physiological indexes and coagulation physiological indexes of Xizang improved dairy cows(Holstein × Xizang cattle)under hypoxia environment to reveal the blood physiological characteristics of hypoxia adaptation,and evaluate the improvement effect of Xizang improved dairy cows by regularly detecting their DHI indexes and tracking their milk yield.Improved cattle raised in a low-oxygen plateau environment(Qiongjie County,Shannan City,Xizang,3 617 m above sea level)were used as the research objects,and Holstein dairy cows introduced from Australia to Xizang and Xizang cattle(a local yellow cattle in Xizang)were selected as the control.Blood routine index,coagulation index,DHI index,and first fetal lactation yield were measured.The results showed that after long-term adaptation to low oxygen environment,the blood physiological indexes and DHI indexes of Xizang improved dairy cows had significant changes,among which HGB,HCT,and MCV were significantly higher than those of Xizang improved dairy cows and Xizang cattles(P＜0.05),and the PLT was significantly lower than that of Xizang improved dairy cows(P＜0.05).There were no significant differences in PT,APTT,and TT between Xizang improved dairy cows and Xizang cattles(P＞0.05),and the coagulation function was improved compared with that of Holstein cows.Compared with Xizang improved dairy cows,milk fat percentage,milk protein percentage and lactose were significantly increased(P＜0.05),while somatic cell count was significantly decreased(P＜0.05).The study indicates that the Xizang improved dairy cows have a certain ability to adapt to low oxygen,and can adapt to low oxygen environment better than the imported dairy cows.Compared with the Xizang cattle and the imported Holstein dairy cows,the production performance of the Xizang improved dairy cows was optimized and improved.关键词
西藏改良奶牛/血液指标/生产性能/低氧适应Key words
Xizang improved dairy cows/blood index/production performance/hypoxic adaptation分类
农业科技引用本文复制引用
高乐程,巴桑珠扎,班旦,索朗曲吉,罗布多吉,白玛坚才,苟潇,旦增洛桑..西藏改良奶牛低氧适应的血液生理指标与生产性能分析[J].饲料研究,2024,47(8):92-96,5.基金项目
西藏自治区外国专家项目"基于DHI技术在我区奶牛养殖场中示范推广应用研究(项目编号:2021WZ003)" （项目编号:2021WZ003）
中央引导地方项目"岗古村奶牛健康养殖技术示范与推广(项目编号:XZ202201YD0010C)" （项目编号:XZ202201YD0010C）
