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Studies on the productive and reproductive characteristics of turkeys selected for rearing on pasture in the south of Italy. 4. Egg fertility and hatchability, variability among years and hatches, dependent and interdependent relationships


, : Studies on the productive and reproductive characteristics of turkeys selected for rearing on pasture in the south of Italy. 4. Egg fertility and hatchability, variability among years and hatches, dependent and interdependent relationships. Annali dell' Istituto Sperimentale per la Zootecnia 4(1): 75-98

Data are analysed on the fertility and hatchability over a 3-yr period of a total of 25 186 eggs in 9 spring hatches from 2 strains of turkey selected for viability and reproductive ability. Fertility averaged 86.93% in strain A and 87.38 in strain B, the hatchability of fertile eggs 89.95 and 89.62% resp., and the hatchability of eggs set 78.80 and 78.95%. Year and hatch had a significant effect on fertility and hatchability. Fertility decreased linearly as hatch number increased.

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