Reproductive efficiency of broiler breeder supplemented with canthaxanthin
DOI:
https://doi.org/10.1590/1809-6891v25e-77462EAbstract
The inclusion of substances with antioxidant properties in the diet of broiler breeders helps the enzymatic defense system in controlling the damage caused by free radicals in cells, for example, rooster spermatozoa. It is therefore hypothesized that supplementing broilers with canthaxanthin may have a positive effect on the reproductive system of broilers. The objective of this research was to study the action of the addition of canthaxanthin in the diet of broiler breeders on the fertilization and hatching rates of eggs and on the fertility of roosters. For the experiment, hens and roosters received, from 22 weeks of age, feed with and without supplementation of 6 ppm of canthaxanthin. Roosters between 30 and 50 weeks of age that received canthaxanthin in the diet showed less alterations in chromatin over the weeks of life. There were no differences between measurements of seminiferous tubules in different treatments. Canthaxanthin-supplemented broiler breeders had the highest rate of perforation of sperm in the perivitelline membrane, the best hatching rate and the highest fertility rate. It was concluded that the use of canthaxanthin as an antioxidant agent in the diet of broiler breeders improves reproductive efficiency.
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