Abstract
Twelve sows were used to examine the effects of feeding L-carnitine from artificial insemination to mid-gestation on maternal circulating IGF-I and carnitine concentrations and fetal growth. Supplementing L-carnitine did not influence the serum concentration of IGF-I. However, sows that were fed carnitine had increased circulating plasma free carnitine. Litters from sows fed L-carnitine were heavier and had more fetuses. The increase in litter fetus number was not detrimental to other growth traits such as individual fetal weight or crown to rump length. Our study suggests that feeding Lcarnitine to gestating sows is beneficial for fetal growth and development.
Highlights
L-carnitine is a water-soluble amine that is naturally synthesized in liver, kidney, and brain
Twelve sows were used to examine the effects of feeding L-carnitine from artificial insemination to midgestation on maternal circulating Insulin-like growth factors (IGF)-I and carnitine concentrations and fetal growth
Our study suggests that feeding L-carnitine to gestating sows is beneficial for fetal growth and development.; Swine Day, 2003, Kansas State University, Manhattan, KS, 2003 Keywords Swine day, 2003; Report of progress
Summary
Twelve sows were used to examine the effects of feeding L-carnitine from artificial insemination to mid-gestation on maternal circulating IGF-I and carnitine concentrations and fetal growth. Supplementing L-carnitine did not influence the serum concentration of IGF-I. Sows that were fed carnitine had increased circulating plasma free carnitine. Litters from sows fed L-carnitine were heavier and had more fetuses. The increase in litter fetus number was not detrimental to other growth traits such as individual fetal weight or crown to rump length. Our study suggests that feeding Lcarnitine to gestating sows is beneficial for fetal growth and development
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