Type of Document Master's Thesis Author Wampler, Susan Anderson URN etd-08012012-040422 Title Preference and acceptability of four protein sources by ruminating Holstein calves Degree Master of Science Department Dairy Science Advisory Committee
Advisor Name Title Polan, Carl E. Committee Chair Barnes, Michael A. Committee Member Siegel, Paul B. Committee Member Keywords
Date of Defense 1988-05-22 Availability restricted AbstractFour successive groups of four calves each (~ 4 mo old) were individually penned and observed
during a 14 d trial period for choice of concentrate. Prior calf diets contained soybean meal (SBM)
(for two groups and distillers grains in place of SBM for two groups. Concentrates contained approximately equal amounts of corn with either SBM, peanut meal (PNM), fish meal (FSM), or
corn gluten meal (CGM). Each day of four trials, .45 kg of each concentrate was randomly assigned
to one of four equal feed box sections. Calf feeding position was recorded every 30 sec for no more
than 50 min or until calves stopped eating. In addition, 1.36 kg of first cutting orchardgrass hay
was offered twice per day. Measurements of amount of each feed consumed, order of consumption
and length of time spent eating each feed were analyzed statistically to determine preference.
Overall preference was for SBM, closely followed by PNM, both over FSM and CGM, with the
l preference status of FSM showing the most change over time by decreasing throughout the trial
periods. Neither section in which feed was offered nor previous experience with SBM significantly
influenced preference. In addition, twenty calves ranging in age from 4 mo to 7 mo were divided
and housed in four groups of five and observed during a 30 d trial period for acceptability of the
protein feeds tested for preference. Acceptability, measured subjectively as length of time required
by calves to eat each feed, was greatest for SBM, closely followed by PNM and CGM, and least
for FSM. Analysis of calf weight gain showed no differences between feeds.
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