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Effect of frequency of milking and time of artificial insemination on fertility under farm condition

DARYAB SINGH AND B.K. PANDA*
Hatchery, manager, Project Directorate on Poultry Rajendranagar, Hyderabad - 500030 (A.P)
*Principal Scientist, Regional Center CARI Bhubaneswar (Orrissa)

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The present study was conducted by using Krishi Broiler males and Delham Red females under intensive management. Thirty males divided in to 6 groups were allotted for milking like once daily, twice daily, thrice daily once in 5 and once in 10 days. In the present experiment, five groups of 20 females each were kept in individual cages and utilized for insemination at 2 hours interval starting from 8 AM up to 10 PM. The hatching eggs were collected from the second day of the insemination up to 22 days and stored in a cold room at 15 0C. The eggs were set in an automatic incubator at weekly interval. Fertilization was ascertained by breaking and inspection of incubated eggs after 7 days of incubation. Week wise fertility data was recorded to find out the effect of frequency of milking and A.I on fertility. It is observed that frequency of milking has a highly significant effect on fertility. In the present study once in 5 days milking frequency gave highest fertility followed by once in 10 days and once daily. Significant decrease in fertility was also observed on twice daily and thrice daily milking when compared to once daily milking. This could be due to decrease number of spermatozoa and semen volume. It is observed that A.I in the evening hours ( 2-6 PM ) gave better fertility as compared to morning hours.

Source : IPSACON-2005
 
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