Pattern of Fertile Period in Kadaknath Using Fresh vs Preserved Semen

The attempts have been made to examine fertility pa ttern in fertile period in Kadaknath chicken using fresh vs preserve d semen. For this study 60 female and 30 male birds from each breed were taken. Standard procedures were used for semen collection, dilution , artificial insemination and fertility examination. The fertility pattern in fertile period of fresh 0, 6 and 24 hr stored semen (at 3-5 0 C) in all diluents (normal saline, CARI semen diluent, Beltsville Poultry Semen Extender (BPSE), and Lake's semen diluents) was determined in 60 healthy hens f rom same breed using Artificial insemination (A. I.) technique. A. I. wi th freshly ejaculated semen (0 hr) indicated that fertilizing ability of sperma tozoa in fertile period was reduced gradually and significantly (P<0.05) with t he increase of duration after artificial insemination (AI) (from 2-12 days) irrespective of the diluents. Similarly a gradual reduction in fertilit y along with enhancement of fertile period was examined at 6 and 24 hr store d Kadaknath chicken semen. Fertility in fertile period was found very p oor in the semen stored and diluted with normal saline for 6 hrs, whereas i n the same diluent, no fertility after 24 hrs storage of semen. At all the semen storage period (0, 6 and 24 hrs), CARI semen diluent showed numerically higher fertility in fertile period than other diluent. From this study it may be concluded that CARI diluents is better than other diluents for sho rt term storage of Kadaknath semen at refrigerated temperature.