Data/hora: 16/06/2024 04:02:48

Biblioteca(s): 	Embrapa Suínos e Aves.	
Data corrente: 	13/11/2020	
Data da última atualização: 	13/11/2020	
Autoria: 	FÉLIX, D. O.; SILVA, A. S.; FIALHO, A. T. S.; OLIVEIRA, C. J. P; BRITO, C. O.; TAVERNARI, F. de C.; RIBEIRO JUNIOR, V.; ROSTAGNO, H. S.; ALBINO, L. F. T.	
Afiliação: 	UFV; UFS; UFS; UFS; CLAUDSON OLIVEIRA BRITO, UFS; FERNANDO DE CASTRO TAVERNARI, CNPSA; VALDIR RIBEIRO JUNIOR, UFS; HORÁCIO SANTIAGO ROSTAGNO, UFV; LUIZ FERNANDO TEIXEIRA ALBINO, UFV.	
Título: 	Fat-soluble vitamin supplementation levels in diets for laying hens from 28 to 44 weeks of age.	
Ano de publicação: 	2020	
Fonte/Imprenta: 	Brazilian Journal of Poultry Science, v. 22, n. 3, p. 1-10, 2020.	
DOI: 	http://dx.doi.org/10.1590/1806-9061-2019-1239	
Idioma: 	Inglês	
Conteúdo: 	Abstratc: This study aimed to examine the impact of levels of dietary supplementation with fat-soluble vitamins on the production performance and egg quality of laying hens. Three hundred Hy-Line White W-36 laying hens were evaluated from 28 to 44 weeks of age. The birds were allotted to one of six treatments in a randomized block design with 10 replicates with five birds each. Performance and egg quality parameters were evaluated in four 28-day periods. A corn and soybean meal-based basal diet was formulated so as to meet the nutritional requirements of the animals, with the exception of fatsoluble vitamins. The treatments consisted of dietary supplementation with 0%, 33.3%, 66.7%, 100.0%, 133.3% or 166.7% of fat-soluble vitamins (100% supplementation consisted of 7500 IU, 2000 IU, 10 IU and 1.8 mg of vitamins A, D3, E and K per kilogram of diet, respectively). Eggshell weight, shell thickness, shell strength, feed intake, egg weight, feed conversion per egg mass and feed conversion per dozen eggs showed a quadratic response (p&#8804;0.05) to the treatments, whereas egg mass responded linearly. Optimal results were obtained at an average fat-soluble vitamin supplementation level of 109%, which corresponds to 8175 IU of vitamin A, 2180 IU of vitamin D3, 10.9 IU of vitamin E and 1.96 mg of vitamin K per kilogram of diet.	
Palavras-Chave: 	Casca do ovo; Peso do ovo; Poedeira; Suplementação de vitaminas; White eggs.	
Thesagro: 	Dieta; Performance.	
Thesaurus Nal: 	Egg weight.	
Categoria do assunto: 	--	
URL: 	http://ainfo.cnptia.embrapa.br/digital/bitstream/item/217768/1/final9539.pdf	
Registro original: 	Embrapa Suínos e Aves (CNPSA)	
Exemplares: 	CNPSA - (21984-1) - UPC - AP - DD -  -  -  - DIS