Journal article

MAMMARY-GLAND LACTOSE, PLASMA PROGESTERONE AND LACTOGENESIS IN THE MARSUPIAL MACROPUS-EUGENII

L FINDLAY, KL WARD, MB RENFREE

JOURNAL OF ENDOCRINOLOGY | J ENDOCRINOLOGY LTD | Published : 1983

Abstract

Mammary gland lactose concentrations in pregnant tammar wallabies remained low at 115 +/- 24 (S.E.M.) micrograms/g wet weight of tissue until immediately before parturition, then increased to 1274 +/- 262 micrograms/g after birth. Concentrations in non-pregnant cyclic animals were generally low (143 +/- 36 micrograms/g), but were raised in three animals around the time of oestrus. Removal of the corpus luteum on day 18 of pregnancy or the oestrous cycle caused an increase in lactose concentrations in both lutectomized and sham-operated animals. This occurred despite a significant lowering of peripheral plasma progesterone concentration in only the lutectomized group. Plasma cortisol concentr..

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