Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Comparison of genetically engineered microbial and plant phytase for young broilers.

Z B Zhang1, E T Kornegay, J S Radcliffe

  • 1Department of Animal and Poultry Sciences, Virginia Polytechnic Institute and State University Blacksburg 24061-0306, USA.

Poultry Science
|May 29, 2000
PubMed
Summary

Both microbial (Natuphos) and plant (Phytaseed) phytase effectively improved broiler performance and nutrient utilization in corn-soybean diets. Phytaseed phytase demonstrated comparable efficacy and safety to Natuphos phytase, with optimal results observed at 2,500 U/kg.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Cost-effective genomic prediction for fertility traits: a comparison of machine learning and conventional models using low-coverage sequencing in Holstein heifers.

Animal : an international journal of animal bioscience·2026
Same author

[Analysis of pathogen surveillance for hand, foot and mouth disease in Guangzhou City from 2015 to 2023].

Zhonghua yu fang yi xue za zhi [Chinese journal of preventive medicine]·2025
Same author

[Molecular epidemiological investigation and genetic characteristics of the early stage of Chikungunya fever outbreak in Guangzhou City in 2025].

Zhonghua yu fang yi xue za zhi [Chinese journal of preventive medicine]·2025
Same author

[Analysis of the immunization status and related factors for children aged 0-7 years old with special health status in Tianhe District, Guangzhou City from 2023 to 2024].

Zhonghua yu fang yi xue za zhi [Chinese journal of preventive medicine]·2025
Same author

[Epidemiological characteristics of hand, foot and mouth disease among people aged 6 and over in Guangzhou, 2010-2023].

Zhonghua liu xing bing xue za zhi = Zhonghua liuxingbingxue zazhi·2025
Same author

[Expert recommendations on mass population vaccination].

Zhonghua yu fang yi xue za zhi [Chinese journal of preventive medicine]·2025

Area of Science:

  • Animal Nutrition
  • Biotechnology
  • Feed Additives

Background:

  • Phytate phosphorus (P) is a major P source in plant-based broiler diets but has low bioavailability.
  • Phytase enzymes are used to improve phytate P utilization and reduce inorganic P supplementation.
  • Evaluating novel phytase sources like Phytaseed is crucial for optimizing broiler nutrition.

Purpose of the Study:

  • To compare the efficacy of microbial (Natuphos) and plant-derived (Phytaseed) phytase in enhancing phytate P utilization in broilers.
  • To assess the safety of Phytaseed phytase in young broiler diets.
  • To determine the dose-response relationship for phytase supplementation.

Main Methods:

  • Corn-soybean meal basal diets with varying levels (250, 500, 2,500 U/kg) of Natuphos and Phytaseed phytase were fed to broilers.

Related Experiment Videos

  • Growth performance (body weight gain, feed intake, gain:feed) was monitored weekly.
  • Excreta and toe ash were analyzed for nutrient retention and bone mineralization.
  • Gross necropsy and histological examination were performed on selected birds.

    • Main Results:

    • Both phytase sources significantly improved body weight gain, feed intake, gain:feed ratio, and nutrient retention (DM, P, Ca).
    • Toe ash content and percentage were enhanced by phytase supplementation.
    • Phosphorus excretion decreased with increasing phytase levels, reaching a plateau around 2,500 U/kg.
    • No adverse effects or abnormalities were observed in gross necropsy or histological evaluations for either phytase source or level.

    Conclusions:

    • Phytaseed phytase is as effective as Natuphos phytase in improving the performance and nutrient utilization of young broilers fed corn-soybean meal-based diets.
    • Phytaseed phytase is safe for use in broiler diets at the tested levels.
    • The optimal dose for both phytases appears to be around 2,500 U/kg for maximizing benefits.