Development evelopment and use of resistance and immune status indices in pig breeding
https://doi.org/10.32634/0869-8155-2020-343-11-41-44
Abstract
Relevance and methods. Selection indices for indicators of natural resistance (NR) and immune status (IS) have been proposed. To assess the state of pig natural resistance, 8 indicators that reflect the state of four protective properties of blood have been studied. They are: bacteriostatic, antigen-binding, bacteriolizing and phagocytic. To assess the immune status, a set of standard and unified tests of the first and second levels has been developed.
Results. The first includes rosette formation reactions for quantitative determination of T- and B-lymphocytes, determining Ig G, Ig A, and Ig M count in blood serum by radical immunodiffusion (RID) in gel, and quantitation of active phagocytes from neutrophilic granulocytes in reaction with inert particles of melamine-formaldehyde latexes. Tests of the second level of immune status assessment include determining the number of T-lymphocytes of various subpopulations in the lymphocytotoxic test. The pig population has been evaluated and young animals have been selected according to the resistance index in order to increase resistance to conditionally pathogenic microflora.
About the Authors
Victor V. Fedyuk
Donskoy State Agrarian University
Russian Federation
Russian Federation
Victor V. Fedyuk, the head of the Department of farm animal breeding, private zootechnics and zoo hygiene named after academician P.E. Ladan, doctor of agricultural Sciences, Professor
Rostov region, Oktyabrsky district, s. Persianovsky, Michurina str.
Arkadi A. Chertov
Donskoy State Agrarian University
Russian Federation
Russian Federation
Arkadi A. Chertov, post-graduate student of the Department of farm animal breeding, private zootechnics and zoo hygiene named after academician P.E. Ladan
Rostov region, Oktyabrsky district, s. Persianovsky, Michurina str.
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Review
For citations:
Fedyuk V.V., Chertov A.A. Development evelopment and use of resistance and immune status indices in pig breeding. Agrarian science. 2020;(11-12):41-44. (In Russ.) https://doi.org/10.32634/0869-8155-2020-343-11-41-44
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