Lin, Hsuan-Yu Dietary supplementation of 25-hydroxycholecalciferol improves livability in broiler breeder hens. [electronic resource] - Poultry science Nov 2019 - 6108-6116 p. digital Publication Type: Journal Article ISSN: 1525-3171 Standard No.: 10.3382/ps/pez330 doi Subjects--Topical Terms: Animal Feed--analysisAnimalsCalcifediol--administration & dosageChickens--physiologyDiet--veterinaryDietary Supplements--analysisFemaleLongevity--drug effectsReproduction--drug effectsVitamins--administration & dosage