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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
The effect of supplementary bacterial phytase on dietary metabolisable energy, nutrient retention and endogenous losses in precision fed broiler chickens
Journal of Animal Physiology and Animal Nutrition, Volume 96, No. 1, Year 2012
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Description
Thirty-two Ross 308 male broiler chickens were used in a precision feeding assay to investigate the effect of exogenous phytase (EC 3.1.3.26) on dietary apparent metabolisable energy (AME), dry matter digestibility (DMD) coefficient, nitrogen (NR), amino acid and mineral retentions. The excretion of endogenous losses measured as sialic acid (SA) was also determined. Four dietary treatments (control (C), C+250FTU (phytase units per kg feed), C+500FTU, and C+2500FTU) were studied with each treatment replicated eight times in randomised complete block design. Diets were formulated to be nutritionally adequate with the exception of available P content (2.3g/kg non-phytate P). Over the 48-h collection period, the phytase fed birds retained 29.3mg more Na and 2.3mg more Zn (p<0.05) than the control fed birds, with the relationship between phytase dose and Na and Zn retention being best described by a linear function (p<0.05 and p<0.001, for Na and Zn, respectively). Phytase supplementation did not have an effect on dietary AME, DMD and NR. However, increasing the dose of phytase led to a linear increase in dietary amino acid retention (p<0.05). Dietary phytase decreased total sialic acid excretion in a linear fashion (p<0.05). It can be concluded that supplementary phytase increases the retention (reduces the excretion) of dietary Zn and Na in broiler chickens. The beneficial effects of the addition of exogenous phytases to poultry diets seems to be mediated through improved dietary nutrients absorption and reduced endogenous losses. © 2011 Blackwell Verlag GmbH.
Authors & Co-Authors
Pirgozliev, Vasil Radoslavov
United Kingdom, Edinburgh
Scotland’s Rural College Sruc
Bedford, Michael Richard
United Kingdom, Marlborough
Ab Vista
Oduguwa, Oluseyi Olutosin
United Kingdom, Edinburgh
Scotland’s Rural College Sruc
Nigeria, Abeokuta
Federal University of Agriculture, Abeokuta
Acamovic, Thomas
United Kingdom, Edinburgh
Scotland’s Rural College Sruc
Allymehr, Manoochehr
United Kingdom, Edinburgh
Scotland’s Rural College Sruc
Iran, Urmia
Urmia University
Statistics
Citations: 13
Authors: 5
Affiliations: 4
Identifiers
Doi:
10.1111/j.1439-0396.2010.01121.x
ISSN:
09312439
e-ISSN:
14390396
Participants Gender
Male