Various causes related to dead-in-shell embryos of crossbred (PB-2 x Indigenous) chicken egg

Abstract

Aim: The present study was undertaken to study the etiopathology of dead-in-shell embryos of PB-2 male x Indigenous female crossbred chicken egg. Materials and Methods: A total of 1377 eggs were incubated which was collected from a flock of crossbreed bird (PB-2xIndigenous) chicken. Out of which 568 (41.25 %) egg failed to pip out, were utilized for further study. All the dead in shell embryos were examined for different anomalies and pathological condition thorough necropsy examination. For bacteriological isolation a piece of liver, lung and yolk sac contents were collected from 25 nos. of dead in shell embryos and send to the Department of Microbiology for further examination. Results: Atotal of 241 (42.42 %) egg were recorded as dead-in-shell embryos out of 568 eggs which were fail to pip out. The percentage of dead-in-shell was higher on 21st day (61.34%) than 18th day (38.66 %) of incubation. Out of 241 nos. of dead in shell embryos, 47 (19.50%) cases showed malpositions,19 (7.88%) malformation, 6 (2.49%) adhesion,4 (1.66%) dehydration, 67 (27.80%) pathological condition and 98 (40.66%) cases showed no definite abnormalities and 327 (57.57%) numbers of egg were found as infertile. Conclusion: The dead in shell embryo may be due to genetic factor, breed, some pathological condition, frequent power failure, lack of proper hygiene etc. © The authors.