INCUBATION QUALITY OF EGGS OF DIFFERENT CATEGORY OF CROSS LOHMANN LSL-CLASSIC

Abstract

It has been studied that the constituent parts of eggs and their biophysical characteristics, depending on the size of the eggs, have some changes. These changes are quite noticeable when comparing large (61-70) with small (48-55) eggs. The weight loss of incubated eggs on the 7th day was 3.5% in the 1st category, which in absolute terms fluctuated within the following limits: for large eggs - 2.3 g, for medium eggs - 2.5 g. for small ones - 1.5 g. The smaller the egg, the lower the loss of its mass during incubation. On the 11th day in large ones it was 4.9; average - 4.4; small eggs - 3.9 gr. For 18.5 days this the indicator, respectively, was equal to: 9.5; 8.5 and 7.5 gr. The mass of protein and shell, similar to the mass of an egg, as the incubation time increases, the criteria for change, and by the end of incubation their mass is completely minimal. However, superiority in these indicators is again inherent in small eggs. The mass of the embryo, allantois, and yolk sac noticeably increases during incubation and is within certain limits, that is, it meets the requirements of the standard.