Ecology, Environment and Conservation Paper

GROWING BIRDS’ SEX AND HATCHABILITY RELATIONSHIP WITH HATCHERY EGGS’ HOLDING PERIOD AND PARAMETERS

Nurbergen Omarkozhauly, Aleksei Shurkin, Makhabat Saginbayeva, Saltanat Amantay and Dilora Senkebayeva

Abstract

The article is devoted to the issues on hatchability and sex of growing turkeys and geese depending on hatching eggs’ holding period, weight, shape and density. The optimal holding period for hatching eggs of geese and turkeys in order to obtain maximum growing birds’ hatchability was determined. It is proved that the increase in weight and shape index of hatching eggs affect the decrease in hatchability percentage of turkeys and geese, and the gain density of eggs – increase in growing birds’ hatchability. The article confirms the effect of pre-brooding holding period, weight parameters, shape and density of hatching eggs of turkeys and geese on the ratio of growing birds’ sex (female/male). It also determines the increase in sex differentiation of one-day-old growing turkeys and geese with increasing eggs’ holding period: the maximum growing turkeys’ female/male ratio reaches 1/1.26 under turkey eggs’ holding period of 9 days, the maximum growing geese’s female/male ratio is 1/1.08 under geese eggs’ holding period of 16-17 days. The research results can be used in new technologies’ development in sex differentiation of one-day-old growing turkeys and geese, which finds its application in industrial poultry farming to improve its cost effectiveness and economic efficiency.