Combinations of cholecalciferol and 25-hydroxycholecalciferol as vitamin D sources in white laying hen feed diets
| Autor: | Diego Fernando Remolina Rivera, Antonio Gilberto Bertechini, Tiago Ferreira Birro Oliveira, Solange de Faria Castro, Henrique Braga Oliveira, Manuel Fernando Bobadilla-Mendez |
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| Jazyk: | English<br />Spanish; Castilian<br />Portuguese |
| Rok vydání: | 2014 |
| Předmět: | |
| Zdroj: | Ciência e Agrotecnologia, Vol 38, Iss 6, Pp 573-580 (2014) |
| Druh dokumentu: | article |
| ISSN: | 1981-1829 1413-7054 |
| DOI: | 10.1590/S1413-70542014000600006 |
| Popis: | The effect of cholecalciferol (D3) and 25-hydroxycholecalciferol (25-OHD3) as isolated or associated sources of vitamin D (100%-0%, 75%-25%, 50%-50%, 25%-75%, 0%-100%) on the productive performance, egg quality, and bone characteristics was evaluated in white egg-laying hens fed two levels of calcium (Ca) and phosphorus (P) in the basal diet (BD) (BD1 = 0.38% Ca - 0.36% available P and BD2 = 3.2% Ca - 0.30% available P). Nine hundred and sixty Dekalb White hens (24 weeks old) were distributed into 80 cages, under a completely randomized factorial design for 16 weeks. The use of associated sources of vitamin D reduced the feed intake and feed conversion ratio, as well as BD1, which also increased the egg production and egg mass. The association of vitamin D sources with up to 50% 25-OHD3 increased the eggshell percentage. There was interaction (p |
| Databáze: | Directory of Open Access Journals |
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