Investigation on some main reproductive characteristics of guinea fowls (Numida meleagris)
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DOI: 10.22620/agrisci.2009.02.009
Author: Nikolova, M.
An investigation was carried out with 15 sexually mature Pearly grey guinea fowls - local population, reared on deep litter, under natural daylight, at a sexual ratio of 1:4 ( 3males and 12 females). The sexual maturity was reached at 32 weeks of age and 50% laying intensity - five weeks after the beginning of egg-laying. Three peaks of egg production intensity (83.33, 84.52 and 80.95%, respectively) were determined. The reproductive period continued for 22 weeks with average egg productivity of 95.11 eggs per hen and average egg-laying intensity of 54.85%. The egg fertility at the peak was 88.51%. The following average values of the main morphological traits of eggs were determined: egg weight - 40.38±0.11g, shape index - 75.17±0.13%, absolute and relative egg white weight - 20.79±0.07g and 51.34±0.10%, absolute and relative egg yolk weight - 11.84±0.09g and 29.29±.012%, absolute and relative egg shell weight - 8.25±0.10g and 20.18±0.13% respectively, egg shell thickness - 0.55±0.03mm and Haugh-Units - 95.61±0.16%.