EFFECT OF EGG TURNING FREQUENCY ON EMBRYO DEVELOPMENT

Abstract

This article studies the effect of egg turning frequency on embryo development and chick hatching rates during incubation. During the study, chicken eggs were divided into three groups and different incubation regimes were used: classical, progressive and regressive turning regimes. The level of embryo development, activity and survival rates were assessed on days 7, 14 and 18 using the ovoscopy method. The results of the study showed that turning eggs at optimal and high frequencies improves embryo development, reduces embryo mortality and increases the percentage of chick hatching. In particular, in experimental group I, where the progressive turning regime was used, the percentage of developed embryos, the number of live embryos, the percentage of chick hatching and chick weight were recorded at a high level. On the other hand, low turning frequency caused embryos to stick to the shell, slow development of blood vessels and increased embryo mortality. The results obtained are of important scientific and practical importance in improving poultry incubation technology and obtaining high-quality chicks