Dynamics of rumenoenteral transport of progesterone in sheep in chronic experiment

摘要

In chronic experiments on pregnant and lactating sheeps with large fistula of rumen the dynamics of progesterone transport in a cavity of temporarily isolated reticulo-rumen depending on a physiological condition of animals, composition of solution filling a cavity of organ, and time of incubation, were studied. On three animals, 24 experiments were carried out. It was established that, during pregnancy, in a cavity of reticulo-rumen more progesterone was transported than during lactation (p < 0.05). Addition of lignin and cellulose to the salt solution increased the progesterone transport in the cavity of reticulo-rumen (p < 0.001). During three-hour incubation of salt solution in the cavity of reticulo-rumen, an increase of progesterone transport was observed in cavity of the organ (p < 0.001). The data obtained confirm the assumption that forestomach of ruminants participates in removing of progesterone from internal environment to enteral one and that carbohydrate polymers facilitate this process. zhurnal imeni I.M. Sechenova / Rossi inverted question markskaia akademiia nauk.