title: Prolactin in blood plasma and milk of buffalo during estrous cycle and early pregnancy.
abstract: Concentration of prolactin was measured by radioimmunoassay for 11 primiparous and 16 multiparous buffalo. Prolactin concentration of blood plasma on day of insemination was about 200 ng/ml for primiparous and about 315 ng/ml for multiparous animals and fluctuated between 130 and 200 ng/ml for primiparous and between 250 and 345 ng/ml for multiparous pregnant animals. For the nonpregnant group prolactin fluctuated between 145 and 240 ng/ml for primiparous and between 210 and 310 ng/ml for multiparous animals with minor elevations 1 to 2 days before estrus. Concentration of prolactin of milk was not significantly different from that of plasma and was positively correlated .68 for nonpregnant and .93 for pregnant animals.
mesh_terms: D000818:Animals; D002020:Buffaloes / Q000378:metabolism*; D004971:Estrus; D005260:Female; D008892:Milk / Q000378:metabolism*; D010298:Parity; D011247:Pregnancy; D011270:Pregnancy, Animal; D011388:Prolactin / Q000378:metabolism*; D011863:Radioimmunoassay / Q000662:veterinary
chemical_list: D011388:Prolactin