Packed erythrocyte cell volume in divergent lines of Japanese Quails
SAMITA SAINI, G.S. BRAH AND M.L. CHAUDHARY
Deptt. of Animal Breeding and Genetics College of Veterinary Science
Punjab Agricultural University, Ludhiana - 141001
Packed erythrocyte cell volume (PCV, a measure of cell number and volume of RBC’s) of 129 birds was measured at one, three, five and nine weeks of age in males and females of selected and unselected lines of Japanese quails. The differences in PCV values at 1,3 and 5 weeks of age were non-significant. However, the PCV at 9 weeks of age differed significantly from PCV at earlier ages. The increase in PCV from 5 week onward may be attributed to the effect of sexual maturity mediated via sex hormones. Sexual dimorphism in favor of males was significant at 1,3 and 5 weeks of age. The genetically growth selected strains had lower PCV than the unselected control line at 1,3 and 5 weeks of age implying that genetic selection for 4-week body weight lead to a negative correlated genetic change in this physiological attribute.