Study of the influence of modification of nutrition of chicken embryos in the incubation process on egg hatchability

Abstract

The technique of feeding in ovo is used to affect the ability of adult birds to absorb minerals and energy from feed, its resistance to immunological, environmental and oxidative stresses. The degree of response to in ovo feeding depends on the one hand on genetics, age of the bird, egg size and incubation conditions (i.e. epigenotype), on the other hand – on the composition of the applied solution, place and period of its introduction. The aim of the study was to investigate the effect of various mixtures introduced in ovo into the amniotic fluid on embryogenesis and the results of incubation of eggs of hens of the egg direction of productivity. The study was conducted on hatching eggs of Birkivska barvista breed, of which 4 experimental and 1 control group were formed. Mixtures of vitamins, vitamins with amino acids,carbohydrates and probiotics were added to the eggs of the experimental groups during the period of 420 hours of incubation. The substances were injected into the amniotic fluid. Later, when the amniotic fluid was swallowed by embryos, the injected substances entered the digestive tract. All manipulations for the introduction of nutrient solutions into the egg were carried out in a sterile, specially prepared box using disposable 2 ml syringes. There was a pronounced positive effect of the introduction of carbohydrates and probiotics on the results of incubation: the obtained hatchability of eggs was 15.0 and 12.5%, respectively, higher than the control. Estimation of live weight of day-old chickens of the control and experimental groups showed that chickens from the group where glucose injection was used had 3.1% higher live weight compared to the control. The results obtained will be used in further work on studying the effect of in ovo embryo feeding on the indicators of postnatal development of chicks of the egg production.