Effects of feeding medium-chain triglycerides and calcium salts of medium-chain fatty acids on egg production rate and egg shell quality in laying hens

Akiba, Y.; Ishino, S.; Ooide, M.; Hayashi, M.

Sustainable animal production and the environment Proceedings of the 7th AAAP Animal Science Congress, Bali, Indonesia, 11-16 July, 1994 Volume 2 contributed papers: 297-298

1994


Accession: 002607599

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Abstract
In experiment 1, 288 laying hens were allocated to 3 treatment groups given diets containing yellow grease or yellow grease substituted at 2.5% with calcium salts of caprylic acid (MCFA-Ca) or triglycerides of caprylic acids (MCT), respectively. In experiment 2, 450 laying hens in 6 treatment groups were fed on diets containing low (3%) or high (4%) Ca content and yellow grease or yellow grease substituted at 2.5% with mixtures of capric acid and caprylic acid (MCFA) or their Ca salts (MCFA-Ca). Feed conversion ratio was consistently improved by feeding MCT and MCFA-Ca. Egg production rate and daily egg output were improved by feeding MCFA-Ca particularly in hens given the low Ca-diet. Feeding MCFA-Ca also tended to increase egg shell weight and shell thickness. It is suggested that MCFA-Ca improves egg production and calcium metabolism in laying hens.