中国兽医杂志2024，Vol.60Issue(8)：49-53,5.DOI:10.20157/j.cnki.zgsyzz.2024.08.008
哺乳期发生腹泻和肺炎对荷斯坦奶牛寿命和生产性能的影响
Effect of Diarrhea and Pneumonia During Pre-weaning Period on the Longevity and Productive Performance of Holstein Cows
彭成成 1木拉提·米尼尔 2葛瑜涵 1张新月 1陆文韬 1沈凯迪 1曹杰 1马翀1
作者信息
- 1. 中国农业大学动物医院,北京海淀 100193
- 2. 阿菲金(中国)农业科技有限公司,北京朝阳 100125
- 折叠
摘要
Abstract
To investigate the effects of diarrhea and pneumonia during pre-weaning on the longevity and subsequent productivity of Holstein cows,this study utilized the culling records from a large-scale commercial dairy farm between 2012 and 2022.Based on the disease records during pre-weaning period,cows were categorized into four groups:H group(healthy group),D group(diarrhea group),P group(pneumonia group),and D+P group(diarrhea+pneumonia group).After cleaning the raw data,an analysis of variance was used to compare the effects of the diseases on cows'survival days,age at first insemination,age at first calving,and 305-day milk yield of the first lactation.The Kaplan-Meier method was used to analyze the survival probabilities of cows in each group,and the Cox proportional hazards regression model was used to analyze the culling risk within 400 days for each group.The results showed that compared to the H group,the survival days and survival probabilities of cows in the D,P,and D+P groups were significantly reduced(P＜0.01),and the culling risk within 400 days was significantly increased(P＜0.01).However,there were no significant differences in the age at first insemination,age at first calving,and 305-day milk yield of the first lactation(P＞0.05).The findings indicate that diarrhea and pneumonia during pre-weaning negatively affect cow longevity but do not negatively impact reproductive performance and milk yield in first lactation.关键词
犊牛腹泻/犊牛肺炎/泌乳性能/繁殖性能/生存分析Key words
calf diarrhea/calf pneumonia/lactation performance/reproductive performance/survival analysis分类
农业科技引用本文复制引用
彭成成,木拉提·米尼尔,葛瑜涵,张新月,陆文韬,沈凯迪,曹杰,马翀..哺乳期发生腹泻和肺炎对荷斯坦奶牛寿命和生产性能的影响[J].中国兽医杂志,2024,60(8):49-53,5.
