Article
Lactational variation and relationship to postnatal growth of insulin-like growth factor-I in mammary secretions from genetically diverse sows.
Domestic animal endocrinology - 1 Apr 1990
Simmen F A, Whang K Y, Simmen R C, Peterson G A, Bishop M D, Irvin K M
Abstract excerpt
Mammary secretions obtained from four groups of sows at parturition and on days 7, 14 and 21 of lactation were defatted and assayed for total protein and insulin-like growth factor-I (IGF-I). Sows (n = 57) represented two breeds (Landrace and Duroc) and two genetic lines (selected for differences in sow productivity index, SPI) within each breed. Colostrum of Duroc sows was 4-6 fold and 30-60 fold greater in...
Topics
- Animals
- Animals, Suckling
- Breeding
- Colostrum
- Female
- Genotype
- Insulin-Like Growth Factor I
- Lactation
- Mammary Glands, Animal
- Milk
- Milk Proteins