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dc.contributor.advisorNielsen, Brian D.
dc.contributor.authorZingsheim, Justine
dc.descriptionv, 23 p.en_US
dc.description.abstractProtein digestibility in horses has been researched for years. Despite established requirements, the feeding of too much protein has become a major environmental concern for its role in excess nitrogen emissions. Recent studies have looked to improve protein digestibility in horses so as to reduce the amount of nitrogen released into the environment. The enzyme phytase has been extensively studied for its effects on improving the digestibility of phosphorus, but little has been done to observe its effects on protein digestibility. Phytate, the form in which plant phosphorus is found, has been observed developing complexes with amino acids and proteins. Because phytase has been found to improve the digestibility of phosphorous in this form, it could also improve protein availability. Six mature Arabian geldings were used in a 6 x 6 Latin square design to study protein digestibility during phytase supplementation. Horses were fed one of six rotating diets for a I4-day period. Each I4-day period consisted of an II-day adaptation period followed by a 3-day total collection. Throughout the study, each horse received all six diets without repeating. Body weights for each horse declined over the duration of the study resulting in a decrease in the amount of concentrate, hay, and nitrogen consumed each day. Nitrogen content of both feces and urine did not differ by diet nor did nitrogen output. Apparent nitrogen digestibility did vary by diet. This, however, was only due to the large hay content of diets five and six. No affect of phytase supplementation on protein digestibility in horses was found, as there was no illustrated effect on apparent digestibility by the addition of phytase into the horses' diets.en_US
dc.description.sponsorshipDepartment of Animal Science. Michigan State University. East Lansing, Michigan.
dc.publisherKalamazoo Collegeen_US
dc.relation.ispartofKalamazoo College Biology Senior Individualized Projects Collection
dc.relation.ispartofseriesSenior Individualized Projects. Biology;
dc.rightsU.S. copyright laws protect this material. Commercial use or distribution of this material is not permitted without prior written permission of the copyright holder.
dc.titleEffect of Phytase Supplementation On Protein Digestibility in Horses At Maintenanceen_US
KCollege.Access.ContactIf you are not a current Kalamazoo College student, faculty, or staff member, email to request access to this thesis.

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  • Biology Senior Individualized Projects [1489]
    This collection includes Senior Individualized Projects (SIP's) completed in the Biology Department. Abstracts are generally available to the public, but PDF files are available only to current Kalamazoo College students, faculty, and staff.

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