Advanced search
Start date
Betweenand


Requirements of valine for broilers

Full text
Author(s):
Nayara Tavares Ferreira
Total Authors: 1
Document type: Master's Dissertation
Press: Pirassununga.
Institution: Universidade de São Paulo (USP). Faculdade de Medicina Veterinária e Zootecnia (FMVZ/SBD)
Defense date:
Examining board members:
Ricardo de Albuquerque; Nilva Kazue Sakomura; Messias Alves da Trindade Neto
Advisor: Ricardo de Albuquerque
Abstract

This study was to evaluate optimal levels of digestible valine. Three trials were conducted with broiler chickens of Cobb in the initial phase (1-14 days), growth (14-28 days) and termination (28-42 days), with tests performed separately for each phase, based on the method dose-response. For tests 1 to 14 days and 14 to 28 days, 672 animals it were distributed in a completely randomized in eight treatments (seven levels of valine and 1 control), with 7 replicates, each replicate consisting of 12 birds but the test of 28 to 42 days 560 chickens were used, equally distributed as in previous trials in 8 treatments with 7 replicates of 10 birds each. Basal diets were formulated by the dilution technique, deficient in valine, containing levels of energy, minerals and vitamins as recommended by Rostagno et al. (2005), for each phase. The recommended levels of digestible valine for each phase, obtained in this study were based on responses from CA. The recommendations obtained by the dose response are 0.917, 0.905 and 0.783% of digestible valine for broilers from 1-14 days, 14-28 and 28-42 days of age, respectively. (AU)

FAPESP's process: 10/04521-7 - Valine requirements for broiler
Grantee:Nayara Tavares Ferreira
Support Opportunities: Scholarships in Brazil - Master