Year: 2022 | Month: December | Volume 12 | Issue 6
Hen Age Relationship with Hatchability and Embryonic Mortality Traits in Punjab Red
Gurpreet Kour Tulla
Prem Prakash Dubey*
Saroj Kumar Sahoo and Shakti Kant Dash
DOI:10.30954/2277-940X.06.2022.26
Abstract:
Due to lower percentage of hatchability for various causes, the economic viability of the breeding farm reduces. Embryonic mortality or early deaths pose a greater threat to the breeders and prove to be a matter of concern from biological and economic point of view. The present study was conducted on hen belonging to five age groups with 5 weeks duration viz. group I (28-32 weeks), group II (33-37 weeks), group III (38-42 weeks), group IV (43-47 weeks) and group V (48-52). About 2916 eggs, along the five age groups, were examined for fertility, hatchability and embryonic mortality traits. The study concludes the significant (p<0.05) effect of breeder age on all the traits except for mid embryonic mortality. The fertility and hatchability (out of fertile eggs and total egg set) were found to show an increasing trend up to the peak production periods of first three age groups, followed by decrease in the values due to increased embryonic mortality. Late embryonic mortality recorded higher deaths than early embryonic mortality, revealing a biphasic pattern of embryonic deaths over the incubation period. It was concluded that the particular incubation practices may alter the embryonic mortality pattern, but the biological tendency remains conserved in the chick.
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