Pahwa G S, Pandey R S
J Dairy Sci. 1984 Sep;67(9):2001-5. doi: 10.3168/jds.S0022-0302(84)81535-0.
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.
采用放射免疫分析法对11头初产水牛和16头经产水牛的催乳素浓度进行了测定。初产动物授精当天血浆催乳素浓度约为200 ng/ml，经产动物约为315 ng/ml；初产怀孕动物血浆催乳素浓度在130至200 ng/ml之间波动，经产怀孕动物则在250至345 ng/ml之间波动。对于未怀孕组，初产动物催乳素浓度在145至240 ng/ml之间波动，经产动物在210至310 ng/ml之间波动，且在发情前1至2天有轻微升高。牛奶中催乳素浓度与血浆中催乳素浓度无显著差异，未怀孕动物二者的正相关系数为0.68，怀孕动物为0.93。
