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The effects of calcium carbonate on the apparent digestibility, serum concentration and apparent retention of dietary minerals in dairy cattle Cathcart, Edward Byron

Abstract

The effect of increasing the calcium content of a hay-grain diet fed to postparturient dairy cattle was studied. Mineral apparent digestibilities, serum concentrations and apparent mineral retentions were monitored while the animals were under the stress of peak lactation. Nine Holstein and seven Ayrshire cows were randomly assigned to the control (0.7% Ca) or the Ca-treatment (1.5% Ca) based on calving order. The diets otherwise contained adequate nutrients. Each animal was fed to appetite for 80 days with no difference (p > . 05) occurring between treatments in intake when expessed as a percentage of body weight. Daily milk production (4% FCM) was higher (p < .05) as was the average body weight (p.05) but there were higher (p

Item Metadata

Title	The effects of calcium carbonate on the apparent digestibility, serum concentration and apparent retention of dietary minerals in dairy cattle
Creator	Cathcart, Edward Byron
Publisher	University of British Columbia
Date Issued	1981
Description	The effect of increasing the calcium content of a hay-grain diet fed to postparturient dairy cattle was studied. Mineral apparent digestibilities, serum concentrations and apparent mineral retentions were monitored while the animals were under the stress of peak lactation. Nine Holstein and seven Ayrshire cows were randomly assigned to the control (0.7% Ca) or the Ca-treatment (1.5% Ca) based on calving order. The diets otherwise contained adequate nutrients. Each animal was fed to appetite for 80 days with no difference (p > . 05) occurring between treatments in intake when expessed as a percentage of body weight. Daily milk production (4% FCM) was higher (p < .05) as was the average body weight (p.05) but there were higher (p
Genre	Thesis/Dissertation
Type	Text
Language	eng
Date Available	2010-03-23
Provider	Vancouver : University of British Columbia Library
Rights	For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.
DOI	10.14288/1.0095226
URI	http://hdl.handle.net/2429/22413
Degree (Theses)	Master of Science - MSc
Program (Theses)	Animal Science
Affiliation	Land and Food Systems, Faculty of
Degree Grantor	University of British Columbia
Campus	UBCV
Scholarly Level	Graduate
Aggregated Source Repository	DSpace

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UBC_1981_A6_7 C39.pdf -- 3.93MB

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Rights

For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.