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The impact of melatonin administration on the fertility performance and several relating parameters during the breeding season in the Arabi ewes

    Authors

    • W.Y. Kassim 1
    • K.A. Al-Rishdy 2
    • M.F. Al-Helou 3

    1 Department of Animal Production, College of Agricultureو University of Basrah, Basrah, Iraq

    2 Department of Animal Production, College of Agriculture, University of Basrah, Basrah, Iraq

    3 Department of Biology, College of Education, Qurna, University of Basrah, Basrah, Iraq

,

Document Type : Research Paper

10.33899/ijvs.2019.163244
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Abstract

A total of twenty-four healthy ewes aged between 2-3 years old and weighed about 35.09 kg of body weight were divided randomly into four groups (6 animals for each group). The first group included the non-treated control group, while the other three groups were subjected to various oral doses of melatonin 9 mg, 12 mg and 15 mg/head, respectively. All treatments were applied at 6 o'clock in the morning, to investigate the effect of treatment with melatonin during breeding season on reproductive performance and levels of some biochemical parameters in Arabi ewes from 1 May to 1 October 2017. Blood samples 7ml were collected after one hour of treatment and then monthly during the pregnancy months to determine the concentrations of biochemical parameters. After Postpartum, lambed ewes/lambs number, birth weight, placenta empty weight and cotyledon number were recorded. The results showed significant (P<0.05) improvement in reproductive performance (fertility percentage, twinning rate and the number of offspring) when ewes administrated melatonin at two doses (12 and 15 mg/ head). Also, melatonin administration caused significant (P<0.05) decrease in the concentrations of thyroxin, cortisol, and cholesterol. Conversely, there was a significant increase (P<0.05) in glucose concentration after 1 hour of treatment. The concentrations of thyroxin, cortisol, cholesterol, and vitamin C increased significantly (P<0.01) in early-gestation compared with mid and late-gestation, while the concentrations progesterone and glucose increased significantly (P<0.05) in mid-gestation compared with early and late-gestation. In conclusion, melatonin administration at doses 12 and 15 mg/ head improves ewe reproductive performance (fertility percentage, twinning rate and the number of born lambs). Additionally, the gestation stage has a negative effect on the concentrations of thyroxin, cholesterol and vitamin C.

Keywords

  • Melatonin
  • ewes
  • biochemical parameters
  • Reproductive

Main Subjects

  • Animal Nutrition
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Iraqi Journal of Veterinary Sciences
Volume 33, Issue 2
September 2019
Page 461-468
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  • PDF 598.01 K
History
  • Received: 17 December 2018
  • Revised: 05 May 2019
  • Accepted: 15 May 2019
  • Published: 01 September 2019
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  • Article View: 661
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APA

Kassim, W., Al-Rishdy, K., & Al-Helou, M. (2019). The impact of melatonin administration on the fertility performance and several relating parameters during the breeding season in the Arabi ewes. Iraqi Journal of Veterinary Sciences, 33(2), 461-468. doi: 10.33899/ijvs.2019.163244

MLA

W.Y. Kassim; K.A. Al-Rishdy; M.F. Al-Helou. "The impact of melatonin administration on the fertility performance and several relating parameters during the breeding season in the Arabi ewes". Iraqi Journal of Veterinary Sciences, 33, 2, 2019, 461-468. doi: 10.33899/ijvs.2019.163244

HARVARD

Kassim, W., Al-Rishdy, K., Al-Helou, M. (2019). 'The impact of melatonin administration on the fertility performance and several relating parameters during the breeding season in the Arabi ewes', Iraqi Journal of Veterinary Sciences, 33(2), pp. 461-468. doi: 10.33899/ijvs.2019.163244

VANCOUVER

Kassim, W., Al-Rishdy, K., Al-Helou, M. The impact of melatonin administration on the fertility performance and several relating parameters during the breeding season in the Arabi ewes. Iraqi Journal of Veterinary Sciences, 2019; 33(2): 461-468. doi: 10.33899/ijvs.2019.163244

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