Clinical syndromatic of laying hens of cross «Lohmann Brown» in the conditions of farm

Abstract

The results of the monitoring of health of laying hens in the age of 166, 300 and 530 days are presented in the article. The analysis of the general syndromatic of herd and the collection of information on the number of bird, cross, retention, productivity, morbidity and mortality has been carried out. It is found by the clinical examination of the laying hens that in 83% the average fatness, in 71.3% of the feathers are silken and well adhering to the body, in 12.3% of the laying hens has the weakness of the skeleton, fractures of the limbs, wings, thickening and deformation of the joints. As a result of the research, changes in morphological indices of blood of laying hens were installed. The hemoglobin content in the blood was lower in 13.3% of laying hens at the age of 300 days and in 26.7% at 530 days, which may indicate the development of scarce anemia. Eritocytopenia was established in 37.8% of the laying hens of all age groups. An increase in the hematocrit value was noted in 41.1% of the studied laying hens. While calculating leukogram, eosinopenia was detected in 8.9%, lymphocytosis was detected in 7.8% and increase of segmental granulocytes was detected in 4.4%. Hyperproteinemia was detected in 53.3% and 66.7% of laying hens at the age of 300 and 530 days respectively, which clearly indicates a violation of the functional state of the liver. In 88.9% of studied hens of all age groups, hypocalcemia was detected and hypophosphataemia was detected in 60 %, indicating a violation of mineral metabolism. The increase in LF activity was observed in 100% of laying hens at age 166, 300 and 530 days, which is an adaptive reaction of the poultry organism during egg formation and egg laying. Hyperfermentemia of AlT and AST was detected respectively in 53.3% and 100% of laying hens at age 166 days, in 66.7% and 100% – 300, in 80% and 100% – 530. A tendency has been established according to age that the number of laying hens encreased with a decrease in urea concentration in the blood (166 days – 13.3%; 300 – 23.3%; 530 – 36.7%), indicating a violation of the urine-forming function of the liver. Hyperuricaemia was detected in 26.7%, 16.7% and 10% laying hens in the age of 166, 300 and 530 days, respectively, indicating a violation of protein metabolism. Monitoring of the hens' health has made it possible to obtain data on the clinical condition of the organism and to conduct an objective assessment of poultry of different age period. The indicated changes of the laboratory study of the metabolic profile of the blood indicate a violation of protein and mineral metabolism.