MOORTHY M.KHANDARE TEJASHWINI BHARATTANUVASRAJENDRAN K.SIVAKUMAR, K.2024-01-042024-01-042022https://krishikosh.egranth.ac.in/handle/1/5810205646A biological experiment was conducted to study the effect of different mating ratio and egg storage period on fertility and hatchability of TANUVAS Namakkal quail-1 breeders in caged housing system. The experiment was conducted by using two hundred and fifty adult birds of the age 15-25 weeks (males:25 and females:125) and 35-45 weeks (males:25 and females:125) TANUVAS Namakkal quail-1 breeders. The different male: female ratios viz. T1 (1:2), T2 (1:3), T3 (1:4), T4 (1:5) and T5 (1:6) were maintained in cages separately. All the birds were reared as per the standard managemental procedure and fed with Japanese quail breeder diet. The fertile eggs were collected from each male: female ratio separately for 28 days period. Eggs set in the incubator and per cent hatchability, infertile, embryonic mortality and dead-in-shell were studied. The results of the experiment revealed that the hatchability was highly significant (P<0.01) in T3 group (77.62%) with a mating ratio of 1:4 in 15 to 25 weeks age group and in T2 group (72.83%) with a mating ratio of 1:3 in 35 to 45 weeks age group and these two treatments were selected for the second experiment for the collection of eggs for pre-incubation storage study. The per cent infertile, embryonic mortality and dead-in shell did not differ significantly in 15 to 25 weeks and 35-45 weeks age group.EnglishThesis