EVALUATION OF THE EFFECT OF LAMINARIA GRITS ON THE PRODUCTIVITY OF LAYING HENS

Abstract

A pressing issue in industrial poultry farming is the search for feed additives and technologies that facilitate the realization of the genetic potential of agricultural poultry. One of the solutions to this problem is molecular genetic methods for studying the expression levels of productivity and resistance genes, which allow us to assess the impact of feed additives on health, productivity and product quality at the molecular level. The purpose of the presented study was to assess the potential of using Laminaria grits as a feed in the diet of industrial layers of the Lohmann White cross. The experiment was conducted at the vivarium of the International Laboratory of Molecular Genetics and Genomics of Poultry, FGBOU VO MGAVMiB-MVA named after K.I. Skryabin. Zootechnical research methods were used in the work. The study found that the egg-laying intensity for the entire period was higher in the 2nd experimental group and amounted to 97.77%, which is 2.09% more than the control, 1.94% more than the third experimental group and 1.19% more than the fourth experimental group. In the group of birds receiving bladderwrack, the indicator was at the level of 96.88%, which is 1.2% more than the control and 0.3% more than the fourth experimental group. The introduction of 15 g / kg of kelp contributed to an increase in the egg-laying intensity by 0.9%, compared to the control. Thus, in the course of the study, the effect of different rates of introducing Laminaria grits as a feed was assessed. The maximum egg production of 97.7% was noted with the addition of Laminaria to the feed (5 g / kg), which is 2.1% higher than the control. The results of the experiment form the basis for the development of new promising natural adaptogens that normalize the productivity of industrial cross-breed laying hens and ensure the production of biosafe poultry products.