Definition of lactation
1 : the production and secretion of milk by the mammary glands … there may be overproduction of prolactin, the breast milk hormone. A sign of that might be abnormal lactation.— Paul G. Donohue When a doe kids and begins lactation, she must draw on the calcium stored in her bones to furnish enough blood calcium for milk production.— David B. Weems … lactation rooms where mothers can express milk for baby.— Shawn Tully … the infants of mothers given the names of lactation support groups or individuals instead are more likely to be fully breast-feeding at four months.— Barbara Quick
2 : one complete period of lactation extending from about the time of birthing to weaning … cows fed 1.1 percent bicarb in the total ration produced an average 17,587 lbs. of milk per lactation … — Eastern Milk Producer
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