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Digestible valine requirements for broilers from 22 and 42 days old
- Source :
- Acta Scientiarum: Animal Sciences, Vol 36, Iss 2, Pp 151-156 (2014)
- Publication Year :
- 2014
- Publisher :
- Editora da Universidade Estadual de Maringá (Eduem), 2014.
-
Abstract
- Current experiment established different criteria to evaluate the requirements of digestible valine for broilers from 22 and 42 days of age, by different regression models (quadratic, exponential and Linear Response Plateau) and, in the case of statistical significance, the comparison of means byDuncantest at 5% probability. A total of 1,920 Cobb 500 male broilers were used and distributed in an entirely randomized experimental design, with 6 treatments (6 digestible valine levels: 0.7192, 0.7729, 0.8265, 0.8802, 0.9339 and 0.9876%) and 8 replications, with 40 broilers each. Data on performance and carcass characteristics were evaluated. The level of 0.8265% digestible valine was considered standard. The inclusion of 0.816, 0.848 and 0.903% of digestible valine levels, corresponding to digestible valine:lysine ratios of approximately 76.00%, 79.00% and 84.12%, provided best feed intake, weight gain and feed conversion ratio, respectively for broiler from 22 to 42 days of age.
Details
- Language :
- English
- ISSN :
- 18062636 and 18078672
- Volume :
- 36
- Issue :
- 2
- Database :
- Directory of Open Access Journals
- Journal :
- Acta Scientiarum: Animal Sciences
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.b5b6d7438d44a2ba6bf183d8c66e09
- Document Type :
- article
- Full Text :
- https://doi.org/10.4025/actascianimsci.v36i2.22761