Morphological features of liver growth in Pharaoh and Texas breed quails

The purpose of the study is to determine the morphological features of the growth of the right and left lobes of the liver of Pharaoh and Texas quail breeds in postnatal ontogenesis. The material was selected from both breeds 1-, 10-, 20-, 30-, 40-, 50-day old (by n = 9). The length of the liver of quails of the Pharaoh breed varies from 1.0 to 5.0 cm; width - from 0.4 to 2.7; thickness - from 0.1 to 1.2 cm, the maximum indicators occur on the 40th day after birth; in the Texas breed, the length is from 1.0 to 4.3 cm; the width is from 0.3 to 2.5; and the thickness is from 0.1 to 0.9 cm, the maximum indicators are observed at the 20-day age of postnatal ontogenesis. The growth of the liver occurs unevenly with the prevalence of the parameters of the right lobe over the left in both breeds. The length of the right and left lobes of the liver of quails of the Pharaoh breed increases by 55.75 and 48.91 % by the age of 10 days, by 50.56 and 86.13 % in the 20-day age, after 10 days it increases by 27.16 and 30 19 %, at 40 days of age - by 25.22 and 25.00 %, and by 50 days of age it decreases by 20.86 and 19.52 %, respectively. The thickness of the liver lobes in quails of the Pharaoh breed increases at the age of 20 days to 135.21-170.37 %, its width increases at the age of 30 days to 51.21-65.62 %. The length and width of the liver of Texas quails at a daily age is 0.9-1.2 and 0.3-0.6 cm, up to the 30th day the indicators increase, then decrease by 24.31-21.89 and 36.23-44.01 %. On the 40th day, the length and width of the liver lobes increase and decrease again by the 50th day. The thickness of the right and left lobes of the liver increases up to the age of 40 days, most at the age of 20 days (up to 103.33-112.50 %), and on the 50th day it decreases by 421.27-27.38 %.