Open AccessFEATURES COLOSTRAL IMMUNITY CALVES IN COMBINED STIMULATION PREGNANT COWS IMMUNOMODULATORS AND SYNESTROL2%
Author(s) -
С С Терентьев,
V.I. Velikanov,
A.V. Kljapnev,
A.V. Gorina,
E.A. Trunova,
A.A. Dunaevskaja,
А. В. Чвала
Publication year - 2021
Language(s) - English
Resource type - Conference proceedings
DOI - 10.52419/3006-2021-2-225-228
Subject(s) - colostrum , immunity , ice calving , passive immunity , fetus , placenta , estrone , globulin , immune system , stimulation , pregnancy , medicine , endocrinology , biology , hormone , physiology , immunology , lactation , antibody , genetics
The purpose of our experiment was to study the effect of the combined administration of an immunomodulator and a synthetic analogue of estrone to cows 3-5 days before calving on the colostral immunity of calves. The result of the work showed that the calves obtained from such cows have a greater number of leukocytes, T-lymphocytes and B-lymphocytes at birth. A synthetic analogue of estrone probably cross the placenta and affect the fetus, which is reflected in the acceleration of the metabolism of the newborn. As a result, there was an accelerated assimilation of colostrum from the gastrointestinal tract, which was reflected in a sharp increase in the fractions of β- and γ-globulins one hour after drinking colostrum. In addition, the number of T-lymphocytes and B-lymphocytes has sharply increased.