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- Title
Thyroid Hormones and cortisol concentrations in Offspring are Influenced by Maternal Supranutritional Selenium and Nutritional Plane in Sheep.
- Authors
Vonnahme, Kimberlya.; Neville, Tammi L.; Lekatz, Leslie A.; Reynolds, Lawrence P.; Hammer, Carolyn J.; Redmer, Dale A.; Caton, Joel S.
- Abstract
To determine the effects of maternal supranutritional selenium (Se) supplementation and maternal nutritional plane on offspring growth potential, ewes were randomly assigned to 1 of 6 treatments in a 2 x 3 factorial arrangement [dietary Se (adequate Se; 9.5 µg/kg body weight vs. high Se; 81.8 µg/kg body weight initiated at breeding) and plane of nutrition [60%, 100%, or 140% of requirements; initiated on day 50 of gestation]]. Lambs were immediately removed from dams at birth and reared. Cortisol concentrations at birth were similar, but by 24 h, a relationship (P = 0.02) between maternal Se supplementation and nutritional plane on cortisol concentrations was observed in lambs. A sex of offspring x day of age interaction (P = 0.01) and a maternal Se supplementation x nutritional plane x day of age interaction (P = 0.04) was observed for thyroxine concentrations. Differences in growth may be influenced by thyroid hormone production early in neonatal life.
- Subjects
PHYSIOLOGICAL effects of selenium; SELENIUM in animal nutrition; NUTRITION &; reproduction; SHEEP; PREGNANCY in mammals; SHEEP feeding; HYDROCORTISONE; THYROXINE; THYROID hormones
- Publication
Nutrition & Metabolic Insights, 2013, Issue 6, p11
- ISSN
1178-6388
- Publication type
Article
- DOI
10.4137/NMI.S11332