The influence of morphological parameters of incubation eggs on the growth and development of repair young

Abstract

The purpose of the research was to analyze the influence of morphometric parameters of eggs on the quality of day-old chickens, as well as the growth and development of repair young. The shape index of eggs weighing up to 55 g varied from 0.581 to 0.814, in eggs weighing - from 55g to 65 g from 0.687 to 0.805 units. All the eggs under study, having an optimal weight (55-65 g) in terms of suitability for incubation, were divided into 3 groups depending on the size of the shape index: group 1 – 0.687-0.725; group 2 – 0.726-0.764; group 3 – 0.765-0.805. The live weight of day-old chickens in the first group ranged from 31.81 g to 35.47 g, with a coefficient of variation of 3.5%, and in the second, third and fourth groups from 37.12 g to 42.81 g with a coefficient of variation of 3.8%, 4.1% and 6.2%. The weight of day-old chickens of the second group was significantly higher than in the third and fourth groups by 1.4% and 1.2%, respectively. At the age of 17 weeks, the difference in the live weight of the repair young between the second, third and fourth groups was not significant and ranged from 0.14% to 0.38%, and in average daily increments from 0.05% to 1.16%. The repair young of the first group were significantly inferior to their peers in terms of live weight by 207.48-213.94 g, and in terms of average daily gains - by 15.5-14.5%. The safety of livestock was: group 1 - 89.6%; group 2 - 98.7%; 3 - 97.3; group 4 - 97.5%. The uniformity of poultry by live weight in the groups was 80.2-85.7%.