China Animal Husbandry and Veterinary Medicine ›› 2021, Vol. 48 ›› Issue (9): 3183-3190.doi: 10.16431/j.cnki.1671-7236.2021.09.008

• Physiology and Biochemistry • Previous Articles     Next Articles

Effect of Antenatal Exercise on Indices of Physiological Metabolism in Transition Dairy Cow

JIANG Jing1,2, MA Li1, LUO Qiao1, LUO Zhengzhong1,3, SHEN Liuhong1, YU Shumin1, TAO Jinzhong2, CAO Suizhong1   

  1. 1. College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China;
    2. College of Agriculture, Ningxia University, Yinchuan 750021, China;
    3. College of Animal Science and Technology, Chongqing Three Gorges Vocational College, Chongqing 404155, China
  • Received:2021-02-18 Online:2021-09-20 Published:2021-09-17

Abstract: The objective of this study was to investigate the effects of prenatal exercise on the indices of physiological metabolism in perinatal dairy cows, and provide scientific guidance and theoretical basis for the health management of perinatal dairy cows. 24 multiparous Holstein cows were randomly and equally selected and divided into test group (TRT group) and control group (CON group), fed and managed uniformly. The experiment started at 21 days before the due date, the cows in TRT group walked twice a day (09:00 and 16:00) at a speed of less than 3 km/h and the total daily exercise volume of each cow was (4.0±0.2) km/d, CON group moved freely. The blood samples were collected at 21 and 7 days before confinement, parturition day, 7 and 30 days after confinement (noted as -21, -7, 0, +7 and +30 d, respectively) before morning meal. Blood was collected before feeding in the morning, and the plasma contents of non-esterified fatty acid (NEFA), β-hydroxybutyric acid (BHBA), glucose (GLU), triglyceride (TG), cholesterol (CHOL), creatinine (CREA) and urea (UREA) were detected. The results showed that the concentration of NEFA and BHBA in TRT group exhibited a declining trend compared with CON group during the experiment (0.05<P<0.1), and the concentration of NEFA of TRT group at -7 d was significantly lower than CON group (P<0.05). The change of plasma GLU concentration in TRT group was more stable than CON group, and was extremely significantly higher than that of CON group at +30 d (P<0.01). The plasma TG concentration of the two groups were decreased sharply on parturition day and the prenatal concentration were extremely significantly higher than that of all time points after delivery (P<0.01), while the plasma concentration of TG in TRT group was extremely significantly higher than CON group at +30 d (P<0.01). There was no significant difference in plasma UREA and CREA concentrations between the two groups (P>0.05). The results indicated that the exercise at a speed of less than 3 km/h (total amount of exercise was 4.0 km/d±0.2 km/d could reduce the plasma NEFA and BHBA concentrations of perinatal dairy cows effectively and attenuate the stress of negative energy balance(NEB).

Key words: perinatal period; dairy cows; prenatal exercise; indices of physiological metabolism

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