中国农业大学学报2025，Vol.30Issue(3)：24-36,13.DOI:10.11841/j.issn.1007-4333.2025.03.03
西藏地区奶牛泌乳性能及其影响因素分析
Analysis of lactation performance characteristics and influencing factors of dairy cattle in Xizang
摘要
Abstract
In order to understand the characteristics of lactation performance of dairy cattle in Xizang,the daily milk yield(dMY),fat percentage(FP),protein percentage(PP),fat-to-protein ratio(FPR),lactose percentage(LP),milk urea nitrogen content(MUN)and somatic cell score(SCS),derived from the dairy herd improvement records of three farms in Xizang for 10 consecutive months,were used in descriptive statistics and factors analysis,as well as lactation curve fitting using Wood's model.The results showed that:1)The average dMY was 15.29 kg,FP was 4.29％,PP was 3.66％,LP was 5.06％,and MUN was 13.19 mg/dL in Xizang.2)The influence of the farms and lactation stages on all lactation performance was significant(P＜0.05),and the regression of dMY,FP,PP,FPR,and MUN on environmental temperature was significant(P＜0.05).There was also a significant regression(P＜0.05)between dMY,FP,FPR,and MUN on square of environmental temperature.The regression of the adjusted daily milk production,milk fat percentage,and milk protein percentage on the proportion of Holstein bloodline were significant(P＜0.05).3)The lactation curves of dairy cows in Xizang was characterized by late peak days,low peak day milk yield and poor sustainability.To sum up,the lactation performance of dairy cows in Xizang is generally low,and the increase in the proportion of Holstein's blood will improve the lactation performance of dairy cows.This study provides theoretical support for the development of Xizang's dairy husbandry.关键词
荷斯坦牛/生产性能/泌乳性能/乳品质/高原奶业Key words
Holstein cattle/dairy herd improvement/lactation performance/milk quality/plateau dairy industry分类
畜牧业引用本文复制引用
许静漪,任小丽,张震,温东旭,陈功,李斌,徐青,王雅春..西藏地区奶牛泌乳性能及其影响因素分析[J].中国农业大学学报,2025,30(3):24-36,13.基金项目
西藏自治区科技计划项目(XZ202201ZY0004N) （XZ202201ZY0004N）
西藏自治区重点研发计划(CGZH2023000257) （CGZH2023000257）
国家现代农业产业技术体系(CARS-36) （CARS-36）
长江学者和创新团队发展计划(IRT15R62) （IRT15R62）
