| Grant number: | 13/04524-4 |
| Support Opportunities: | Scholarships in Brazil - Master |
| Start date: | June 01, 2013 |
| End date: | February 28, 2015 |
| Field of knowledge: | Agronomical Sciences - Animal Husbandry - Animal Production |
| Principal Investigator: | José Roberto Sartori |
| Grantee: | Monica Megumi Aoyagi |
| Host Institution: | Faculdade de Medicina Veterinária e Zootecnia (FMVZ). Universidade Estadual Paulista (UNESP). Campus de Botucatu. Botucatu , SP, Brazil |
Abstract The objective of this project is to evaluate the effect of vitamin C levels and tryptophan on performance, physiological and behavioral indicators of broilers reared on high density. An experiment will be conducted during the period 1 to 42 days old. The experimental design is a completely randomized factorial 2 X 5 + 1 (vitamin C levels: 0 and 250 mg / kg diet X tryptophan levels: 100, 125, 150, 175 and 200% + negative control diet without supplementation of vitamin C + 100% of the recommendation of tryptophan, associated to low stocking density) with eleven treatments and six replications. Diets will be formulated based on corn and soybean meal, according to the recommendations of Rostagno et al. (2011) in four phases: pre-starter, starter, grower and finisher. The performance variables are analyzed: weight gain, feed intake, feed efficiency, viability and productive efficiency. As physiological indicators of stress will be evaluated: serum glucose, heterophil: lymphocyte. As health parameters of birds will be evaluated antibody titers against Newcastle disease and behavioral variables will be evaluated according to an ethogram. (AU) | |
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