UN SDG
Livestock Studies 1997, Vol 37, Num, 1     (Pages: 074-082)
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Evaluation of Semen Quality in Cocks

Ongun KESKİN* 1 ,Necmettin TEKİN 2 ,Nafiz YURDAYDIN 3 ,Murat SELÇUK 4 ,Mustafa KAYA 5

1 Dr., A Ü. Vet. Fak. Dölerme ve Sun'i Tohumlama ABD., ANKARA
2 Prof. Dr., A. Ü. Vet. Fak. Dölerme ve Sun'i Tohumlama ABD., ANKARA
3 Doç. Dr., A. Ü. Vet. Fak. Dölerme ve Sun'i Tohumlama ABD., ANKARA
4 Araş. Gör., A. Ü. Vet. Fak. Dölerme ve Sun'i Tohumlama ABD., ANKARA
5 Araş. Gör.l00.Yıl Üniv.Vet.Fak. Dölerme ve Sun'i Tohumlama Bilim Dalı.VAN - The aim of this research was to prove principal spermatological characteristics by invitro data in Ross breeder cocks and expose factors effected semen quality.

İn this experiment 5 Ross breeder cocks were treated. During the research, semen was collected from cocks by manual massage method twice a week. The spermatological characteristics of ejaculates from cocks are as follows: (1) Ejaculate volume averaged 0.3 ± 0.0 ml. (2) sperm motility 72.1 ± 5.9 %, (3) sperm concentration 3.0 ± 1.9 x 109 /ml. (4) percentage of abnormal sperm 4.8 ± 0. 7 % and (5) pH .5 ± 0.1.

Fresh semen was performed the thermorezistens test. During the incubation at 40 °C, it was observed that sperm motility ceased at 240. minutes. Keywords :