Davis S R, Mepham T B, Lock K J
J Dairy Res. 1979 Nov;46(4):613-21. doi: 10.1017/s0022029900020677.
Examination of data pertaining to milk yield and litter growth rate of guinea-pigs at peak lactation showed that milk yield increased with increasing number of pups carried by the dam during pregnancy and also with increasing maternal weight. There was a significant linear correlation (P less than 0.05) of mammary gland weight (expressed per unit of maternal body weight) with litter size. Increasing litter size, within 18 h of parturition, from 1 pup to 5 pups did not elicit a response in milk yield. Decreasing litter size from 5 pups to 1 pup reduced milk yield to the level expected of a monotocous dam. Data are presented showing the ability of the guinea-pig pup to survive from birth without access to milk and the inadequacy of milk supply to meet litter requirements when the litter size is more than 2 pups. The mechanisms controlling lactation in the guinea-pig are discussed in relation to data obtained in other species.
对豚鼠泌乳高峰期产奶量和窝仔生长率相关数据的研究表明，产奶量随着孕期母鼠所带幼崽数量的增加以及母鼠体重的增加而增加。乳腺重量（以母鼠体重单位表示）与窝仔数之间存在显著的线性相关性（P小于0.05）。分娩后18小时内，窝仔数从1只增加到5只，产奶量未出现相应变化。窝仔数从5只减少到1只，产奶量降至单胎母鼠预期的水平。文中给出的数据显示，豚鼠幼崽在出生后不获取乳汁也能存活，且当窝仔数超过2只时，乳汁供应不足以满足窝仔需求。结合在其他物种中获得的数据，讨论了豚鼠控制泌乳的机制。
