The Resource Evaluation of the efficacy of high levels of microbial phytase in broilers, Carrie Walk, (electronic resource)

Evaluation of the efficacy of high levels of microbial phytase in broilers, Carrie Walk, (electronic resource)

Label
Evaluation of the efficacy of high levels of microbial phytase in broilers
Title
Evaluation of the efficacy of high levels of microbial phytase in broilers
Statement of responsibility
Carrie Walk
Creator
Contributor
Thesis advisor
Subject
Genre
Language
eng
Summary
Three experiments were conducted to evaluate the efficacy of high levels of microbial phytase in broiler diets. In experiment one (EXP 1), phytase was included in the diets at 0, 250, 500, 10,000, and 20,000 PU/kg diet. In experiments two and three (EXP 2 and 3), phytase was included in the diets at 0, 500, 2,500, 12,500, and 62,500 PU/kg diet. In all three experiments, dietary Ca and P were reduced to fit industry recommendations. In EXP 1, phytase supplementation improved (P [lesser than] 0.05) feed intake (FI), body weight gain (BWG), feed:gain (F:G), bone ash (BA), P digestibility (PD), and reduced (P [lesser than] 0.05) total litter P (TLP) by 53%. In EXP 2, phytase supplementation decreased (P [lesser than] 0.05) FI, had no effect (P [greater than] 0.05) on BWG, and improved (P [lesser than] 0.05) F:G, BA, and PD. In EXP 3, phytase supplementation decreased (P [lesser than] 0.05) FI, improved (P [lesser than] 0.05) BWG, F:G, BA, PD, and reduced (P [lesser than] 0.05) TLP by 33%. In young broilers (hatch to 21 days), high levels of dietary phytase improved BWG above the NRC and positive control diets (EXP 1 and 3). However, as broilers reached market weight there were no differences (P [greater than] 0.05) in BWG. Results of this research indicate that microbial phytase was efficacious in broiler diets. However, there were no added benefits to feeding high levels of dietary phytase (in excess of current recommendations) to broilers raised to market weight
Cataloging source
MUU
http://library.link/vocab/creatorName
Walk, Carrie
Degree
M.S.
Dissertation year
2006.
Granting institution
University of Missouri-Columbia
Index
no index present
Literary form
non fiction
Nature of contents
  • dictionaries
  • bibliography
  • theses
http://library.link/vocab/relatedWorkOrContributorDate
1952-
http://library.link/vocab/relatedWorkOrContributorName
Ledoux, David R.
http://library.link/vocab/subjectName
  • Phytases
  • Broilers (Chickens)
  • Broilers (Chickens)
  • Phosphorus in animal nutrition
Target audience
specialized
Label
Evaluation of the efficacy of high levels of microbial phytase in broilers, Carrie Walk, (electronic resource)
Instantiates
Publication
Note
  • The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file
  • Title from title screen of research.pdf file (viewed on April 22, 2009)
Bibliography note
Includes bibliographical references
Carrier category
online resource
Carrier category code
  • cr
Carrier MARC source
rdacarrier
Color
black and white
Content category
text
Content type code
  • txt
Content type MARC source
rdacontent
Control code
319072241
Dimensions
unknown
Form of item
electronic
Media category
computer
Media MARC source
rdamedia
Media type code
  • c
Specific material designation
remote
System control number
(OCoLC)319072241
System details
Mode of access: World Wide Web
Label
Evaluation of the efficacy of high levels of microbial phytase in broilers, Carrie Walk, (electronic resource)
Publication
Note
  • The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file
  • Title from title screen of research.pdf file (viewed on April 22, 2009)
Bibliography note
Includes bibliographical references
Carrier category
online resource
Carrier category code
  • cr
Carrier MARC source
rdacarrier
Color
black and white
Content category
text
Content type code
  • txt
Content type MARC source
rdacontent
Control code
319072241
Dimensions
unknown
Form of item
electronic
Media category
computer
Media MARC source
rdamedia
Media type code
  • c
Specific material designation
remote
System control number
(OCoLC)319072241
System details
Mode of access: World Wide Web

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