Fat-Soluble Vitamin Supplementation Levels in Diets for Laying Hens from 28 to 44 Weeks of Age
| Autor: | DO Félix, A.S. Silva, Claudson Oliveira Brito, Fernando de Castro Tavernari, Horacio Santiago Rostagno, Ats Fialho, Cjp Oliveira, Ribeiro Jr, Lft Albino |
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| Přispěvatelé: | UFV, UFS, CLAUDSON OLIVEIRA BRITO, UFS, FERNANDO DE CASTRO TAVERNARI, CNPSA, VALDIR RIBEIRO JUNIOR, UFS, HORÁCIO SANTIAGO ROSTAGNO, UFV, LUIZ FERNANDO TEIXEIRA ALBINO, UFV. |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Vitamin
040301 veterinary sciences medicine.medical_treatment Veterinary medicine Performance Soybean meal Randomized block design Biology Feed conversion ratio SF1-1100 0403 veterinary science chemistry.chemical_compound Animal science SF600-1100 medicine Peso do ovo Eggshell Quadratic response Egg weight Casca do ovo Vitamin E 0402 animal and dairy science 04 agricultural and veterinary sciences Fat soluble vitamin supplementation 040201 dairy & animal science Animal culture chemistry QL1-991 White eggs Poedeira Animal Science and Zoology Dieta Zoology Suplementação de vitaminas |
| Zdroj: | Brazilian Journal of Poultry Science v.22 n.3 2020 Brazilian Journal of Poultry Science Fundação APINCO de Ciência e Tecnologia Avícolas (FACTA) instacron:FACTA Brazilian Journal of Poultry Science, Volume: 22, Issue: 3, Article number: eRBCA-2019-1239, Published: 09 OCT 2020 Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA-Alice) Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
| Popis: | 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≤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. Made available in DSpace on 2020-11-13T19:25:21Z (GMT). No. of bitstreams: 1 final9539.pdf: 635933 bytes, checksum: d767db846d09362fbffddc650d59f720 (MD5) Previous issue date: 2020 |
| Databáze: | OpenAIRE |
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