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Mammary gland lactose synthetase activity and plasma hormone levels in goats at different stages of pregnancy and lactation

Mammary gland lactose synthetase activity and plasma hormone levels in goats at different stages of pregnancy and lactation

Journal of Nuclear Agriculture & Biology 12(3): 73-75

Lactose synthetase activity of mammary gland along with plasma prolactin and cortisol levels were measured in goats [Capra hircus] at dry nonpregnant stage and at 10, 20 and 30 days prepartum and at the same periods of lactation. Lactose synthetase activity could not be detected at dry nonpregnant stage but it appeared 30 days prepartum. An appreciable increase was observed at 10 days prepartum reaching peak values at 10 days postpartum. The changes in the pattern of circulating prolactin and cortisol were also similar to the changes observed with lactose synthetase. Plasma prolactin levels and change in the enzymatic activity were significantly correlated between 20 days prepartum and 20 days a postpartum and cortisol between 10 days prepartum and 10 days postpartum.

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