1、Lactation is suppressed by administration of androgens.
2、Female workers during their pregnant and lactation period have their work load and work time reduced.
3、Pregnancy and lactation: Requirements for all nutrients are increased during pregnancy and lactation.
4、All the women had reported at least one live birth and information regarding the duration of lactation.
5、In breeding sows, for example, feed intake in lactation largely determines the sows milk production.