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Influence of high dose of phytase and an emulsifier on performance, apparent metabolisable energy and nitrogen retention in broilers fed on diets containing soy oil or tallow.
Br Poult Sci. 2015; 56(5):590-7.BP

Abstract

The effects of high dose of microbial phytase and an emulsifier on the performance, apparent metabolisable energy (AME) and nitrogen (N) retention in broilers fed on diets containing different fat sources were examined in a 5-week trial. Two fat sources (soy oil and tallow), two inclusion levels of E. coli phytase (500 or 1000 phytase units (FTU)/kg diet) and two inclusion levels of lysolecithin emulsifier (0 or 3.5 g/kg of diet) were evaluated in a 2 × 2 × 2 factorial arrangement of treatments. Throughout the 5-week trial, soy oil supplementation improved weight gain and feed per gain compared with tallow, but had no effect on feed intake. The high dose of phytase increased the weight gain and feed intake and lowered the feed per gain during d 1-21, but had no effect on performance parameters over the whole trial period. An effect of emulsifier was observed for feed intake during d 1-21 and over the whole trial period. Addition of emulsifier increased feed intake compared with diets without emulsifier. During weeks 1, 2, 3 and 5, birds fed on soy oil-based diets had higher nitrogen-corrected AME (AMEN) compared with those fed on tallow-based diets. During weeks 2, 3 and 5, the effect of phytase was significant for AMEN, with the high dose increasing the AMEN. During week 2, AMEN was increased with emulsifier addition. During weeks 1, 2, 3 and 5, birds fed on soy oil-based diets had higher fat retention compared with those fed on tallow-based diets. The high dose of phytase improved the retention of fat during week 5 and the addition of emulsifier resulted in higher fat retention during week 1. During weeks 2, 3 and 5, an interaction between fat source × phytase × emulsifier was observed for N retention. In soy oil-based diets, emulsifier plus 1000 FTU/kg phytase increased N retention compared with other groups, while in tallow-based diets, emulsifier addition increased N retention in diets with 500 FTU/kg, but not in 1000 FTU/kg diet. Overall, the present data suggest that the dietary fat source influenced performance, AMEN and fat retention in broiler chickens. There is opportunity to improve bird performance during d 1-21, AMEN and fat retention with higher doses of microbial phytase. Addition of the emulsifier increased the AMEN during week 2 and tract retention of fat during week 1, but this effect was not translated into improvements in performance.

Authors+Show Affiliations

a Institute of Veterinary, Animal and Biomedical Sciences , Massey University , Palmerston North , New Zealand.b Danisco Animal Nutrition-DuPont Industrial Biosciences , Marlborough , UK.a Institute of Veterinary, Animal and Biomedical Sciences , Massey University , Palmerston North , New Zealand.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

26132590

Citation

Zaefarian, F, et al. "Influence of High Dose of Phytase and an Emulsifier On Performance, Apparent Metabolisable Energy and Nitrogen Retention in Broilers Fed On Diets Containing Soy Oil or Tallow." British Poultry Science, vol. 56, no. 5, 2015, pp. 590-7.
Zaefarian F, Romero LF, Ravindran V. Influence of high dose of phytase and an emulsifier on performance, apparent metabolisable energy and nitrogen retention in broilers fed on diets containing soy oil or tallow. Br Poult Sci. 2015;56(5):590-7.
Zaefarian, F., Romero, L. F., & Ravindran, V. (2015). Influence of high dose of phytase and an emulsifier on performance, apparent metabolisable energy and nitrogen retention in broilers fed on diets containing soy oil or tallow. British Poultry Science, 56(5), 590-7. https://doi.org/10.1080/00071668.2015.1067878
Zaefarian F, Romero LF, Ravindran V. Influence of High Dose of Phytase and an Emulsifier On Performance, Apparent Metabolisable Energy and Nitrogen Retention in Broilers Fed On Diets Containing Soy Oil or Tallow. Br Poult Sci. 2015;56(5):590-7. PubMed PMID: 26132590.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Influence of high dose of phytase and an emulsifier on performance, apparent metabolisable energy and nitrogen retention in broilers fed on diets containing soy oil or tallow. AU - Zaefarian,F, AU - Romero,L F, AU - Ravindran,V, Y1 - 2015/10/19/ PY - 2015/7/2/entrez PY - 2015/7/2/pubmed PY - 2016/8/16/medline SP - 590 EP - 7 JF - British poultry science JO - Br Poult Sci VL - 56 IS - 5 N2 - The effects of high dose of microbial phytase and an emulsifier on the performance, apparent metabolisable energy (AME) and nitrogen (N) retention in broilers fed on diets containing different fat sources were examined in a 5-week trial. Two fat sources (soy oil and tallow), two inclusion levels of E. coli phytase (500 or 1000 phytase units (FTU)/kg diet) and two inclusion levels of lysolecithin emulsifier (0 or 3.5 g/kg of diet) were evaluated in a 2 × 2 × 2 factorial arrangement of treatments. Throughout the 5-week trial, soy oil supplementation improved weight gain and feed per gain compared with tallow, but had no effect on feed intake. The high dose of phytase increased the weight gain and feed intake and lowered the feed per gain during d 1-21, but had no effect on performance parameters over the whole trial period. An effect of emulsifier was observed for feed intake during d 1-21 and over the whole trial period. Addition of emulsifier increased feed intake compared with diets without emulsifier. During weeks 1, 2, 3 and 5, birds fed on soy oil-based diets had higher nitrogen-corrected AME (AMEN) compared with those fed on tallow-based diets. During weeks 2, 3 and 5, the effect of phytase was significant for AMEN, with the high dose increasing the AMEN. During week 2, AMEN was increased with emulsifier addition. During weeks 1, 2, 3 and 5, birds fed on soy oil-based diets had higher fat retention compared with those fed on tallow-based diets. The high dose of phytase improved the retention of fat during week 5 and the addition of emulsifier resulted in higher fat retention during week 1. During weeks 2, 3 and 5, an interaction between fat source × phytase × emulsifier was observed for N retention. In soy oil-based diets, emulsifier plus 1000 FTU/kg phytase increased N retention compared with other groups, while in tallow-based diets, emulsifier addition increased N retention in diets with 500 FTU/kg, but not in 1000 FTU/kg diet. Overall, the present data suggest that the dietary fat source influenced performance, AMEN and fat retention in broiler chickens. There is opportunity to improve bird performance during d 1-21, AMEN and fat retention with higher doses of microbial phytase. Addition of the emulsifier increased the AMEN during week 2 and tract retention of fat during week 1, but this effect was not translated into improvements in performance. SN - 1466-1799 UR - https://www.unboundmedicine.com/medline/citation/26132590/Influence_of_high_dose_of_phytase_and_an_emulsifier_on_performance_apparent_metabolisable_energy_and_nitrogen_retention_in_broilers_fed_on_diets_containing_soy_oil_or_tallow_ L2 - https://www.tandfonline.com/doi/full/10.1080/00071668.2015.1067878 DB - PRIME DP - Unbound Medicine ER -