[Dynamics of rumenoenteral transport of progesterone in sheep in chronic experiment].
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.
Borisenkov
M F
MF
Bakutova
L A
LA
Murav'eva
A N
AN
Tallina
V A
VA
Kaneva
A M
AM
D000818:Animals; D001692:Biological Transport; D002482:Cellulose / Q000378:metabolism; D005260:Female; D007774:Lactation / Q000378:metabolism*; D008031:Lignin / Q000378:metabolism; D011247:Pregnancy; D011270:Pregnancy, Animal / Q000378:metabolism*; D011374:Progesterone / Q000097:blood / Q000378:metabolism*; D012159:Reticulum / Q000378:metabolism*; D012417:Rumen / Q000378:metabolism*; D012492:Salts / Q000378:metabolism; D012756:Sheep / Q000378:metabolism*
D012492:Salts; D011374:Progesterone; D002482:Cellulose; D008031:Lignin