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

¹ Udmurt State Agrarian University, Izhevsk, Udmurt Republic, Russia,
² LLC “Plempticesovkhoz “Uvinsky”, village Uva, Udmurt Republic, Russia

^* Corresponding author: stepanbatanov@mail.ru

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%.