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Abstract
Kozlowski, K. and Liwska, K. 2010. Rate of inner perivitelline layer penetration and fertilizing capacity of turkey semen subject to duration of sperm storage in the oviduct. J. Appl. Anim. Res., 38: 213–216.
Nineteen hens each of Hybrid Super Medium and BUT-9 breeds female turkeys and eight BUT-9 male turkeys were taken. Hens were inseminated with a semen dose of 200×106 and eggs were collected between experimental d 2 and 57. Egg fertilization rates, the number of fertilized eggs laid after a single insemination, the duration of fertility and the number of holes hydrolyzed by sperm in the inner perivitelline layer (IPVL) overlying the germinal disc region of the ovum were monitored during the experiment. The eggs were characterized by a very high fertilization rate in the first two weeks of the experiment at 96.5% in BUT-9 and 96.9% in Hybrid SM. The duration of fertility was three days longer in Hybrid SM females than in BUT-9 hens (38.8 d vs. 35.7 d). The number of holes hydrolyzed by sperm in the inner perivitelline layer decreased considerably in successively laid eggs and it was positively correlated with egg fertilization rates (0.86 for BUT-9 and 0.79 for Hybrid SM). It is concluded that the number of holes in inner perivitelline layer correlated well with fertilization rate.