Genetic selection for avian embryo development at an elevated temperature Public Deposited

http://ir.library.oregonstate.edu/concern/undergraduate_thesis_or_projects/1r66j5586

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  • A genetic selection study to determine the effects on egg hatchability and subsequent chick performance of Japanese quail eggs incubated at a 38.9° C (102° F) dry bulb temperature (Selected, S) when compared to 37.8 C (100°F) (Control, C) was conducted for four consecutive generations. Eggs from a randomly mated population of Japanese quail were randomly allocated to the two treatment groups and incubated in dedicated Jamesway 252 units for the first 14 days then transferred to a common hatcher 36.9° C (98.5° F). Using family-based selection, the chicks that hatched from the two lines were subsequently used as breeders (25 pair matings/line) and the resulting eggs incubated at their respective temperatures. After four consecutive generations, percent egg fertility, percent early dead embryos (1 -7days), and percent hatch of fertile eggs were numerically higher in line C vs. S. While total development time was reduced in line S vs. C by 24 hours, mean egg weight and body weight were higher (p < 0.01) and age to first egg was reduced in line S.
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  • description.provenance : Approved for entry into archive by Linda Kathman(linda.kathman@oregonstate.edu) on 2007-12-11T16:26:12Z (GMT) No. of bitstreams: 1Clovin_We.pdf: 1383197 bytes, checksum: 48c130832b4f1574db616b056effc71b (MD5)
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  • description.provenance : Made available in DSpace on 2007-12-11T16:26:13Z (GMT). No. of bitstreams: 1Clovin_We.pdf: 1383197 bytes, checksum: 48c130832b4f1574db616b056effc71b (MD5)

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