| 释义 |
lactation|lækˈteɪʃən|
[n. of action f. L. lactāre to suckle. Cf. F. lactation.]
1. The action or process of giving suck to an infant; suckling.
1668Wilkins Real Char. ii. ix. §2. 233 Lactation, giving suck. 1806Med. Jrnl. XV. 215 The remote causes of nervous diseases, &c. viz. in..Lactation. 1836–7Sir W. Hamilton Metaph. I. App. 410 By the end of the full period of lactation, it has..reached the full proportion of the adult. 1860Tanner Pregnancy ii. 48 During the periods of lactation and pregnancy. 1879Khory Princ. Med. 18 Prolonged lactation also causes giddiness.
2. The process of secreting milk from the mammary glands.
1857J. H. Walsh Dom. Econ. 559 The establishment of lactation is the turning-point of the lying-in-room.
Add:[2.] Also, a continuous period during which this process takes place, beginning with birth and ending with weaning. (Earlier and later examples.)
1847H. Oldham in Guy's Hosp. Rep. V. 109 A female carries a child in the womb to the full period of gestation; but the process of labour is literally missed, and lactation follows on completion of gestation. 1900Dorland Med. Dict. 343/2 Lactation,..the period of the secretion of milk. 1928W. C. Miller Black's Vet. Dict. 540/2 A cow may produce on an average 800 to 1000 gallons, distributed over from 35 to 45 weeks, in a single lactation. 1947Davidson & Anderson Text Bk. Dietetics (ed. 2) ix. 214 The diet during lactation should contain at least 100 milligrams of vitamin C per day. 1960Vanstone & Dougall Princ. Dairy Sci. iii. 30 Under natural conditions the animal supports its offspring throughout the lactation and supplies its different requirements as it grows. 1979Irish Times 28 Sept. 15/8 There will also be a 1/2p a gallon increase for milk which is also welcome, though it will do little good this year as the lactations are nearly finished. 1987Jrnl. Dairy Sci. LXX. 2168/1 Observed frequencies of clinical mastitis were calculated in 7240 Holstein and Jersey lactations. |