A. E. Jimoh, M. Orunmuyi


The study was carried out to determine the effect of breeder age and mating ratio on the fertility and hatchability characteristics in Japanese quail (Coturnix coturnix japonica) eggs. A total of 56 healthy quails were randomly selected from a breeding population. They were selected based on two different age groups as young (8week old) and old (24week old). Each of the age groups had 28 quails each comprising of 8 males and 20 females separated into four different mating ratios of 1:1, 1:2, 1:3 and 1:4 replicated twice. Eggs were collected, stored and set in the incubator. A total of 118 eggs were collected and set for the younger aged quails (8week old) while 121 eggs were collected and set for the older aged quails (24 weeks old) and for male to female mating ratios; 1:1, 1:2, 1:3, and 1:4 had the following egg numbers 24, 45, 71 and 99 eggs were collected and set in the incubator for hatching. Data collected were subjected to Analysis of Variance (ANOVA) using the General Linear Model (GLM) procedures of SAS (2004) means were compared using Duncan Multiple Range Test.  Differences in age had significant (P<0.01) effect on fertility, embryonic mortality and hatchability. Mating ratio had significant effect on fertility as 1:1 male to female had 100%  fertility and 1:4 with the lowest fertility of (P<0.01). Mating ratio had significant (P<0.01) effect on embryo mortality; 1:1 mating ratio had the lowest while 1:3 had the highest percentage dead in germ. Significant effect (P<0.01) on hatched eggs due to mating ratio was observed with 1:2 having the highest hatched eggs with 79.00% and lower in 1:3 and 1:4 with 68.64 and 69.15%, respectively. There was significant (P<0.01) effect on hatching characteristics by the interactions between breeder age and mating ratios with younger aged quail at 1:2 male to female ratios having the highest percentage value of 83.33%. The 1:2 males to female ratios of 8 weeks old as breeder stock are recommended for better fertility and hatchability.


Japanese quails, breeder age, mating ratio, fertility, hatchability.

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