Abstract
Background and Aim:Among several factors, the sperm quality of poultry is affected by the rooster’s body size and the availability of antioxidants like vitamin E. This study aimed to determine the effect of dietary vitamin E supplementation on rooster sperm quality through a meta-analysis.Materials and Methods:After verification and evaluation, a total of 19 articles were included in this study. Data, including dietary vitamin E, semen volume, concentration, total sperm cells, pH, motility, viability, percentage of dead and abnormal sperm, vitamin E sperm content, malondialdehyde (MDA) content, and testosterone levels, were tabulated in a database; these were subsequently analyzed using mixed modeling with vitamin E dose as a fixed effect and study identity as a random effect.Results:Dietary supplementation level of vitamin E significantly (p<0.001) affected sperm concentration, significantly affected motility (p<0.001), significantly affected sperm vitamin E (p<0.001), significantly affected viability (p<0.001), and significantly affected chicken sperm fertility (p=0.001). Vitamin E administration also significantly reduced the number of sperm cell deaths (p<0.001); however, increased dietary levels of vitamin E did not affect semen volume (p=0.853), pH (p=0.951), MDA (p=0.542), the percentage of abnormal sperm cells (p=0.343), nor testosterone levels (p=0.063).Conclusion:Dietary vitamin E supplementation is recommended for male chickens since it generally enhances the quality of their sperm.
Highlights
Low damage and death rates of sperm cells are important to ensuring the quality of healthy chicken sperm [1]
Dietary vitamin E supplementation is recommended for male chickens since it generally enhances the quality of their sperm
Chicken sperm cells are affected by low cytoplasm, which reduces the amount of natural antioxidants in the cells; if reactive oxygen species (ROS) increase, chicken sperm cells are more vulnerable to damage than those of other animals [4]
Summary
Low damage and death rates of sperm cells are important to ensuring the quality of healthy chicken sperm [1]. Chicken sperm cells are affected by low cytoplasm, which reduces the amount of natural antioxidants in the cells; if ROS increase, chicken sperm cells are more vulnerable to damage than those of other animals [4]. Scientists have investigated the most effective methods of reducing harmful processes in both in vivo and in vitro chicken sperm [5]; one such method is to increase the amounts of antioxidants in in vivo sperm cells. The sperm quality of poultry is affected by the rooster’s body size and the availability of antioxidants like vitamin E. This study aimed to determine the effect of dietary vitamin E supplementation on rooster sperm quality through a meta-analysis
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