China Animal Husbandry & Veterinary Medicine ›› 2025, Vol. 52 ›› Issue (8): 3683-3694.doi: 10.16431/j.cnki.1671-7236.2025.08.017

• Genetics and Breeding • Previous Articles    

Lactation Performance and Its Influencing Factors of Jersey Cattle in Yunnan

MA Xinyu1, ZHANG Hailiang1, WANG Lei1, MA Yiheng1, DU Ziju2, DONG Shaoming2, BA Sangpuchi3, WANG Yachun1   

  1. 1. State Key Laboratory of Farm Animal Biotech Breeding, National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics, Breeding and Reproductive of Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China;
    2. Heqing Modern Agricultural Manor Co., Ltd., Dali 671501, China;
    3. Animal Husbandry and Veterinary Station of Chengguan District in Lasa, Lasa 850000, China
  • Received:2024-11-07 Published:2025-08-02

Abstract: 【Objective】 Jersey is a worldwide famous dairy cattle breed with characteristics of small body size,high milk components and good resistance.This study analyzed the factors affecting the lactation performance of Jersey cattle,aiming to reveal the performance level and population characteristics of production performance of Jersey cattle in Yunnan. 【Method】 Based on the dairy herd improvement (DHI) records of Jersey cattle in a large-scale dairy farm in Yunnan,the influencing factors of lactation performance traits were analyzed by fitting a linear mixed model,and the lactation curve of Jersey cattle was fitted using WOOD model and the lactation curve parameters were calculated. 【Result】 The mean of daily milk yield,fat percent,protein percent,lactose percent and somatic cell score of Jersey cattle in Yunnan was 26.37 kg,5.19%,3.72%,5.05% and 2.84,respectively.The test season,test year and lactation stage had significant effects on daily milk yield,fat percent,protein percent,lactose percent,somatic cell score and milk urea nitrogen content (P<0.05),and parity had a significant effect on the above lactation performance traits except for fat percent and milk urea nitrogen content(P<0.05).The average degree of fitness (R2) of the lactation curve in Jersey cattle was 0.78.Based on fitting results by the WOOD model,the average 305 d milk yield of Jersey cattle was 7 997.04 kg,the average peak milk yield and peak day were 34.30 kg and 71.91 d,respectively. 【Conclusion】 This study revealed the population characteristics of lactation curve and six lactation performance traits such as daily milk yield,milk fat percent and milk protein percent,and found that Jersey cattle in Yunnan perform well and some of the non-genetic factors had significant effects on the lactation performance.The results could provide a reference for the farm management and genetic improvement of Jersey cattle in Yunnan.

Key words: Jersey cattle; production performance; population characteristic; influencing factors; lactation curve

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