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Asian-Australas J Anim Sci > Accepted Articles
DOI: https://doi.org/10.5713/ajas.20.0258    [Accepted] Published online June 24, 2020.
Relieve the negative effects of heat stress on semen quality, reproductive efficiency and oxidative capacity of rabbit bucks using different natural antioxidants
Ibrahim Talat El-Ratel1,*  , Kandil Abdel Hai Attia2  , Ali El-Raghi3  , Sara Fikry Fouda4 
1Department of Poultry Production, Faculty of Agriculture, Damietta University, 34517, Damietta, Egypt
2Department of Evaluation of Natural Resources, Environmental Studies and Research Institute, El-Sadat City University, Cairo, Egypt
3Department of Animal Production, Faculty of Agriculture, Damietta University, 34517, Damietta, Egypt
4Department of Poultry Production, Faculty of Agriculture, Mansoura University, 35516, Mansoura, Egypt
Correspondence:  Ibrahim Talat El-Ratel, Tel: +20-57-2350549, Fax: +20-57-2361858, Email: ibrahim.talat81@yahoo.com
Received: 22 April 2020   • Revised: 9 May 2020   • Accepted: 5 June 2020
The potentiality of extra virgin olive oil (EVOO), betaine (BET) and ginger (GIN), as a natural antioxidant, to reduce negative effects of heat stress on physiological responses, antioxidant capacity, semen quality and fertility of bucks under heat stress were investigated.
Forty adult APRI line rabbit bucks were distributed randomly into four experimental treatments of ten rabbits each. The first treatment was fed the commercial pellet diet (CPD) without supplementation and served as a control. The other three treatments were fed CPD supplemented with EVOO (300 mg), BET (1000 mg) and GIN (200 mg) per kg diet for 3 consecutive months during the summer season.
Supplementation of EVOO, BET or GIN improved (p< 0.05) the sexual desire, progressive motility, vitality, intact acrosome and membrane integrity, sperm cell concentration, sperm outputs and fertility. Seminal plasma total proteins, globulin, total antioxidant capacity, glutathione and glutathione S-transferase, and initial fructose increased (p< 0.05), while total lipids, aspartate and alanine aminotransferases and malondialdehyde decreased (p< 0.05) compared with the control. In comparing the natural antioxidants treatments, GIN evoked the largest improvement.
The inclusion of GIN (200 mg/kg diet) as a useful agent for improving the sexual desire, semen quality and oxidative stress of bucks. This may be a beneficial supplement for the management of rabbit bucks used in natural mating or artificial insemination.
Keywords: Rabbit Bucks; Heat Stress; Natural Antioxidant; Semen Quality; Seminal Plasma Constituents
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