Tags

Type your tag names separated by a space and hit enter

Energy utilisation and growth performance of chicken fed diets containing graded levels of supplementary bacterial phytase.
Br J Nutr. 2013 Jan 28; 109(2):248-53.BJ

Abstract

A total of 364 female Ross 308 chicks (1 d old) were used in the present study conducted in floor pens to investigate the effects of graded levels of supplementary bacterial phytase on dietary energy utilisation and growth performance. For this purpose, four maize-soyabean-based diets were offered to the birds from 0 to 21 d of age. These included a suboptimal P negative control (NC, 3.0 g/kg non-phytate P), NC+250 phytase units (FTU)/kg feed, NC+500 FTU and NC+2500 FTU. The effect of phytase activity on bird growth performance was best described as a linear relationship between increasing dose and increased feed intake (P< 0.001), but was quadratic for body-weight gain (P= 0.002) and feed efficiency (P= 0.023). There was no significant response (P>0.05) of dietary apparent metabolisable energy (AME) to supplementary phytase. The birds fed phytase increased their retention of total carcass energy in a linear fashion (P= 0.009) with increased phytase dose. The efficiency of dietary AME used for overall carcass energy retention also improved (P= 0.007) in a linear manner with increased dietary phytase activity. Dietary net energy for production (NEp) increased (P= 0.047) with an increase in phytase dose following a linear pattern, as an increase of 100 FTU increased dietary net energy by 15.4 J (estimated within the range of doses used in the present experiment). Dietary NEp was more highly correlated with performance criteria than dietary AME, and it seems to be a more sensitive way to evaluate broiler response to phytase supplementation.

Authors+Show Affiliations

Avian Science Research Centre, Scottish Agricultural College, Auchincruive, Ayr, UK. vpirgozliev@harper-adams.ac.ukNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Randomized Controlled Trial
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

22716908

Citation

Pirgozliev, V, and M R. Bedford. "Energy Utilisation and Growth Performance of Chicken Fed Diets Containing Graded Levels of Supplementary Bacterial Phytase." The British Journal of Nutrition, vol. 109, no. 2, 2013, pp. 248-53.
Pirgozliev V, Bedford MR. Energy utilisation and growth performance of chicken fed diets containing graded levels of supplementary bacterial phytase. Br J Nutr. 2013;109(2):248-53.
Pirgozliev, V., & Bedford, M. R. (2013). Energy utilisation and growth performance of chicken fed diets containing graded levels of supplementary bacterial phytase. The British Journal of Nutrition, 109(2), 248-53. https://doi.org/10.1017/S0007114512000943
Pirgozliev V, Bedford MR. Energy Utilisation and Growth Performance of Chicken Fed Diets Containing Graded Levels of Supplementary Bacterial Phytase. Br J Nutr. 2013 Jan 28;109(2):248-53. PubMed PMID: 22716908.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Energy utilisation and growth performance of chicken fed diets containing graded levels of supplementary bacterial phytase. AU - Pirgozliev,V, AU - Bedford,M R, Y1 - 2012/04/13/ PY - 2012/6/22/entrez PY - 2012/6/22/pubmed PY - 2013/3/21/medline SP - 248 EP - 53 JF - The British journal of nutrition JO - Br J Nutr VL - 109 IS - 2 N2 - A total of 364 female Ross 308 chicks (1 d old) were used in the present study conducted in floor pens to investigate the effects of graded levels of supplementary bacterial phytase on dietary energy utilisation and growth performance. For this purpose, four maize-soyabean-based diets were offered to the birds from 0 to 21 d of age. These included a suboptimal P negative control (NC, 3.0 g/kg non-phytate P), NC+250 phytase units (FTU)/kg feed, NC+500 FTU and NC+2500 FTU. The effect of phytase activity on bird growth performance was best described as a linear relationship between increasing dose and increased feed intake (P< 0.001), but was quadratic for body-weight gain (P= 0.002) and feed efficiency (P= 0.023). There was no significant response (P>0.05) of dietary apparent metabolisable energy (AME) to supplementary phytase. The birds fed phytase increased their retention of total carcass energy in a linear fashion (P= 0.009) with increased phytase dose. The efficiency of dietary AME used for overall carcass energy retention also improved (P= 0.007) in a linear manner with increased dietary phytase activity. Dietary net energy for production (NEp) increased (P= 0.047) with an increase in phytase dose following a linear pattern, as an increase of 100 FTU increased dietary net energy by 15.4 J (estimated within the range of doses used in the present experiment). Dietary NEp was more highly correlated with performance criteria than dietary AME, and it seems to be a more sensitive way to evaluate broiler response to phytase supplementation. SN - 1475-2662 UR - https://www.unboundmedicine.com/medline/citation/22716908/Energy_utilisation_and_growth_performance_of_chicken_fed_diets_containing_graded_levels_of_supplementary_bacterial_phytase_ L2 - https://www.cambridge.org/core/product/identifier/S0007114512000943/type/journal_article DB - PRIME DP - Unbound Medicine ER -