Molochnokhozyaistvenny Vestnik

Modern pharmacology is actively searching for new sources of natural peptides and developing new methods of their synthesis for further introduction of protein preparations into production, so it is necessary to identify the natural sources of biologically active peptides, such as fish skin mucus. In order to assess the effect of fish skin mucus on animal hemostasis indicators in vitro in comparison with collagen, the hemostatic activity of skin mucus of carp (Cyprinus carpio carpio Linnaeus, 1758) and African clarias catfish (Clarias gariepinus Burchell, 1822) on the blood of cows and dogs was studied. It was found that the most active in the hemostatic relation was the mucus of the African Clary catfish. Hematological and statistical methods of research were used in this work.

The aim of the study is to establish correlation links between the indices of natural resistance, morpho-biochemical and coagulation blood composition in calves.

Black-and-white calves up to 30 days old have been divided into 2 groups: healthy calves and calves with dyspepsia. Hematological and statistical methods of investigation are used in the work.

This paper presents an assessment of changes in some indicators of the immune system in the control and experimental group of carp under the influence of endogenous cortisol. It was found that when the level of cortisol increases the activity of cellular immunity in fish created by leukocytes increases as well. Other indicators of the immunological status decrease with the increase of this hormone.

The article presents the results of the starter feed influence on the blood parameters in repair heifers of black-and-white breed. It is established that feeding starter feeds in the amount of 1.5-1.7 kg per head per day contributes to the positive dynamics of some immunological and biochemical hcaracteristics, improves the immunological status of the body.