Morphometric characteristics of turkey liver during the growth period in the Amur Region

The aim of the study is to determine the morphometric parameters of the liver depending on the body weight of the turkey in the age aspect. Objectives: to determine the most intensive period of turkey liver growth in relation to its body weight; to calculate the correlation coefficient and conduct a regression analysis of the liver growth parameters to the body weight of the turkey depending on age to determine the most productive period of the organ under study. The studies were conducted at the Far Eastern State Agrarian University in 2024. The object of the study was Hybrid Converter novo turkeys taken from an enterprise in the Amur Region. The material was selected from 9 heads at the age of 1; 7; 14; 21; 28; 60; 90 and 120 days. The total number of poultry studied was 72 heads aged from 1 to 120 days. The material was extracted by complete evisceration. Research methods – morphometry and biometry. Morphometric studies were conducted using rulers, calipers, and scales with a measurement accuracy of 0.01 g. The measured liver parameters were length, width, and height. Based on the results of morphometric studies, a table was compiled showing the average liver and body weight indicators for turkeys depending on age groups. Biometrics were calculated using the correlation coefficient and regression coefficient formulas. The most productive age period for all indicators is from the 28th to the 60th day. During this period, the largest increase in body weight occurs; during this month, turkeys gain 6.5 times more weight. At the same time, the weight of the bird's liver increases 5.5 times. The remaining liver indices increase almost 1.5 times during this month. The linear liver indices have the greatest correlation dependence and regressive effect on body weight during the growth period of the bird at the age of 90 to 120 days, while the greatest influence of body weight on liver indices occurs in turkeys at the age of 1 to 7 days, i.e. with an increase in the intensity of the bird's body weight, the linear indices of its liver size increase.