China Animal Husbandry and Veterinary Medicine ›› 2023, Vol. 50 ›› Issue (8): 3210-3220.doi: 10.16431/j.cnki.1671-7236.2023.08.018

• Genetics and Breeding • Previous Articles    

Determination and Correlation of Milk Production Traits with Body Size,Body Weight and Blood Physicochemical Indicators in Camelus bactrianus in Xinjiang

YAO Huaibing1,2, LI Na1,2, LIANG Xiaorui1,2, HAO Zelin1,2, YAN Hui1,2, ZHAO Zhongkai1,2, LIU Ying1,2, MA Qiang1,2, WANG Yuzhuo3, CHEN Gangliang2,4,5, YANG Jie1,2   

  1. 1. Xinjiang Key Laboratory of Biological Resources and Genetic Engineering, College of Life Sciences and Technology, Xinjiang University, Urumqi 830046, China;
    2. Xinjiang Camel Industry Engineering Technology Research Center, Urumqi 830046, China;
    3. Heilongjiang Provincial Animal Husbandry Station, Harbin 150069, China;
    4. Xinjiang Wangyuan Biological Science and Technology Group Co., Ltd., Altay 836500, China;
    5. Xinjiang Bactrian Camel Research Institute, Altay 836500, China
  • Revised:2023-02-15 Published:2023-07-27

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Abstract: 【Objective】 The aim of this study was to reveal the milk production traits,patterns and factors influencing the lactation period of Camelus bactrianus,analyze the differential growth traits and blood and camel milk physiological and biochemical indicators of high and low Camelus bactrianus,and provide basic research information for the selection and breeding of high-yielding camels.【Method】 This study took the lactating Camelus bactrianus in Junggar as the research object,milk production was monitored,lactation curves were plotted during lactation,and the milk production of different litters was analyzed.Body size,body weight,and physical and chemical parameters of blood and camel milk were measured and analyzed for differences and correlations between high-yielding and low-yielding Camelus bactrianus.【Result】 The milking period of Camelus bactrianus was about 10 lactation months,with high milk production in the first 3 lactation months,a continuous decrease in milk production in the 4th to 7th lactation months,a slight increase in milk production in the 7th to 9th lactation months,and a minimum in the 10th lactation month,which could be summarized into 4 types of lactation curves.The peak of milk production was usually between 2 and 6 litters and the optimal age was 6 to 15 years.The milk yield of the high-yielding camel group was extremely significantly higher than that of the low-yielding camel group (P＜0.01).The weight,blood urea nitrogen,and blood urea of the high-yielding group were significantly higher than those of the low-yielding camel group (P＜0.05),while the serum albumin and calcium levels of the high-yielding camel group were significantly lower than those of the low-yielding camel group (P＜0.05).The milk fat and milk protein of the high-yielding camel group were significantly lower than those of the low-yielding camel (P＜0.01).The results of correlation analysis showed a strong correlation between blood physiological and biochemical indicators and milk production traits.【Conclusion】 The preliminary study revealed the milk production performance of Camelus bactrianus was affected by many factors such as body,lactation stage and nutritional environment,and there was a correlation between body weight,blood and milk composition and milk production,which provided theoretical data for further improving the milk production performance of Camelus bactrianus and selection and breeding of high-yielding camels.

Key words: Camelus bactrianus; milk production traits; lactation curve

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