Persistent Link:
http://hdl.handle.net/10150/292033
Title:
Utilization of liquid acid whey by lactating dairy cows
Author:
DeCorte, Connie Marie, 1962-
Issue Date:
1990
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
Two trials were conducted, the first of which was a 56 d trial with 24 Holstein cows in mid lactation. Treatments were 100% water (T1) or 100% liquid acid whey (T2). Cows on T2 had decreased DM intake and 3.5% FCM, and increased milk fat and protein. Milk fatty acids shifted towards higher medium chained fatty acids for cows on T2 and higher C18 and C18:1 for cows on T1. Molar % of rumen VFA's for cows on T2 decreased for C2, C3, and branched chain fatty acids and increased for C4, C5, and C6. There was no correlation between storage time of whey and whey intake. In the second trial, treatments were arranged in a repeated 3 x 3 latin square design. Six lactating cows were fitted with duodenal cannulae (2 fitted with ruminal cannulae). Treatments were 100% water (T1), 50% water and 50% whey (T2) and 100% whey (T3). The digesta marker was Cr₂O₃. Periods were 12 d with sampling on the last 4 d. Compared to T1, rumen C2 decreased on T2 and T3 and rumen C5 increased on T3 while milk fatty acids shifted towards higher C12 and C14 and lower C18.
Type:
text; Thesis-Reproduction (electronic)
Keywords:
Agriculture, Animal Culture and Nutrition.
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Graduate College; Animal Sciences
Degree Grantor:
University of Arizona
Advisor:
Huber, John T.

Full metadata record

DC FieldValue Language
dc.language.isoen_USen_US
dc.titleUtilization of liquid acid whey by lactating dairy cowsen_US
dc.creatorDeCorte, Connie Marie, 1962-en_US
dc.contributor.authorDeCorte, Connie Marie, 1962-en_US
dc.date.issued1990en_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractTwo trials were conducted, the first of which was a 56 d trial with 24 Holstein cows in mid lactation. Treatments were 100% water (T1) or 100% liquid acid whey (T2). Cows on T2 had decreased DM intake and 3.5% FCM, and increased milk fat and protein. Milk fatty acids shifted towards higher medium chained fatty acids for cows on T2 and higher C18 and C18:1 for cows on T1. Molar % of rumen VFA's for cows on T2 decreased for C2, C3, and branched chain fatty acids and increased for C4, C5, and C6. There was no correlation between storage time of whey and whey intake. In the second trial, treatments were arranged in a repeated 3 x 3 latin square design. Six lactating cows were fitted with duodenal cannulae (2 fitted with ruminal cannulae). Treatments were 100% water (T1), 50% water and 50% whey (T2) and 100% whey (T3). The digesta marker was Cr₂O₃. Periods were 12 d with sampling on the last 4 d. Compared to T1, rumen C2 decreased on T2 and T3 and rumen C5 increased on T3 while milk fatty acids shifted towards higher C12 and C14 and lower C18.en_US
dc.typetexten_US
dc.typeThesis-Reproduction (electronic)en_US
dc.subjectAgriculture, Animal Culture and Nutrition.en_US
thesis.degree.nameM.S.en_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.disciplineAnimal Sciencesen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.advisorHuber, John T.en_US
dc.identifier.proquest1342960en_US
dc.identifier.bibrecord.b26622051en_US
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