STUDY OF THE EFFECT OF LAMINARIA CRUSH ON THE EXPRESSION OF PRODUCTIVITY GENES IN THE BODY OF LAYING HENS

Abstract

In animal diets, due to the rejection of antibiotics and growth stimulants, alternative and safe additives are needed to improve their health and well-being. In this regard, biologically active components of plant origin, such as extracts and infusions from herbs and wood, dry plant biomass, including algae, are becoming relevant. According to many authors, seaweed can be used in poultry farming as part of feed components and feed additives both to improve the immune status and to normalize the microflora in the digestive tract. The recommended dosages of algae used to improve the quality of the resulting products range from 1% to 5% of dry weight. The purpose of the presented study was to study the effect of kelp grits on the expression of genes in the body of laying hens of the Lohmann White cross. The work used zootechnical methods and molecular biology methods. During the study, the effect of kelp grits on the expression of productivity genes in laying hens was assessed. The introduction of kelp at a rate of 5 g / kg into the diet of older laying hens contributed to the positive activation of productivity genes (OCX-32, OCX-36, CALB1) by 30-60%. The obtained results are the basis for the development of new biotechnologies that help extend the period of productive use of industrial cross-breed laying hens by improving egg production indicators. In order to increase egg production indicators, as well as to increase the expression of productivity and resistance genes of egg-laying hens, we recommend including a biologically active additive of kelp in the diets of laying hens at a rate of 5 g / kg of feed.