SciELO - Scientific Electronic Library Online

 
vol.33 issue3Performance of nile tilapia fed with spray-dried or vat-dries bovine blood mealWater footprint of pigs slaughtered in the states of south-central Brazil author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Journal

Article

Indicators

Related links

Share


Acta Scientiarum. Animal Sciences

On-line version ISSN 1807-8672

Abstract

JUNQUEIRA, Otto Mack et al. Effect of phytase supplementation on performance, bone densitometry and carcass yield in broilers chicks. Acta Sci., Anim. Sci. [online]. 2011, vol.33, n.3, pp.301-307. ISSN 1807-8672.  https://doi.org/10.4025/actascianimsci.v33i3.10702.

An experiment was conducted to evaluate the performance, bone densitometry and carcass yield of broilers chicks, using different levels of phytase enzyme. Nine hundred and sixty male one-day-old broiler chicks were used. The birds were distributed in a completely randomized experimental design, involving five treatments and six replications of 32 chicks each. The treatments consisted of a control diet for each phase, and four other diets were formulated adding growing levels of the phytase enzyme (250, 500, 750 and 1,000 FTU of phytase kg-1 feed). When adding the phytase enzyme, the nutritional matrix was valued to guarantee the same nutritional levels as the control diet. In general, the addition of phytase enzyme determined a linear decrease on the performance of the birds. However, the performance obtained with the level of 250 FTU phytase kg-1 feed were no different from the control treatment. The best bone density results were observed in the control treatment with no phytase, and the highest leg and thigh yield were obtained at the level of 514 FTU phytase kg-1.

Keywords : bone characteristics; carcass yield; performance; phytase enzyme.

        · abstract in Portuguese     · text in English     · English ( pdf )

 

Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License