Can nutrition in pregnancy and lactation affect the development of the mammary gland?
Document Type
Conference Proceeding
Publication Date
1995
Conference Title
Fifth Biennial Conference of the Australasian Pig Science Association (APSA)
Place of Publication
Canberra
ISBN
0 646 25622 x
ISSN
1324-9177
Keywords
Sows, Pigs, Pregnancy, Lactation, Mammary gland, High protein diet, DNA
Disciplines
Agricultural Science | Agriculture | Animal Sciences | Food Science | Genetics | Meat Science | Molecular, Genetic, and Biochemical Nutrition | Nutrition | Plant Sciences
Abstract
Changes in DNA in mammary tissue of guts suggest that most of the cell growth takes place between day 75 and 90 of pregnancy with few changes occuring thereafter (Kensinger et al., 1982). Head and Williams (1991) showed that the number of milk secretory cells can be reduced if lean gain is restricted during pregnancy by low-protein diets. Revell et cii. (1995) report that feeding high-protein diets in lactation can stimulate milk yield, even in sows where mammary low-protein growth has been presumably retarded by diets during pregnancy. It is suggested that the number of secretory cells might be stimulated during lactation by feeding high-protein diets and that the stimulation might be greatest when secretory tissue growth has been retarded during pregnancy.
Recommended Citation
Smits, R.J., Revell, D.K., Williams, I.H., Mullan, B.P., Ranford, J.L., Chappell, D.S., 1995. Can nutrition in pregnancy and lactation affect the development of the mammary gland? In “Manipulating Pig Production V”, eds., D.P Hennessey, P.D. Cranwell, Australasian Pig Science Association, Werribee, p. 135.
