Гомеостаз концентрацій кальцію, калію, натрію сперми бугаїв і матково-вагінального слизу корів

Abstract

The difference in concentration indicators (mM) of alkali metal ions (Са2+, К+, Na+) and the calculated ratio indices (RI:1) of their pairs (Nа+:Са2+, К+:Са2+, Nа+:К+) in bull semen samples and uterine-vaginal mucus (UVM) of the Ukrainian black-spotted breed cows was determined and suggests that the ability of sperm to passively and/or actively move through the channels and ducts of the genital organs can be associated with the physicochemical processes of passive diffusion and active transport of substances that occur in the "sperm – UVM " system. The power of the energy of chemical and electrochemical concentration gradients and the power of ion pumps of the osmotic pressure of inorganic and oncotic – organic substances promotes the movement of spermatozoa to the place of their contact with the egg cell. In favor of the proposed hypothesis indicate the obtained probable (Р ˂ 0.001) results of the stoichiometry parameters of the concentrations of Ca2+ (10 vs. 6) and Na+ (62 vs. 1066 mM) of sperm and UVM, respectively. The determined difference is also illustrated by the unequal indices of ion pair concentration ratios. If their value in sperm samples is directed from the pair Na+:К+ to the pair Na+:Са2+ (1.4:1 → 5:1 →6:1), then in the samples of UVM – from К+:Са2+ to Na+: Ca2+ (8:1 → 23:1 → 193:1). The difference in indices of a number of pairs (К+:Са2+ → Nа+:К+ → Nа+:Са2+) of sperm and UVM is directed from a smaller to a larger value (3:1 ˂ 22:1 ˂ 187:1). If the calculated changes are expressed as percentages, then the difference in indicators in the samples of the UVM, respectively, is 41; 94 and 97 %, which is in 2; 16 and 30 times more than sperm samples. This may mean that the determined significant difference in the physical and chemical state of organic and inorganic substances in the environment of the channels and ducts of the genital organs of cows creates conditions that contribute to the active and passive movement of sperm through the channels and ducts of their genital organs