2017 Student Research Conference:
30th Annual Student Research Conference

Effects of Dietary Probiotics on Cattle Growth Performance and Stress Behavior

Alexis J. Kelsey
Dr. Jessica Colpoys, Faculty Mentor

As the livestock industry shifts away from performance based antibiotics, probiotics may be a beneficial alternative. The objective of this study was to evaluate if dietary probiotics alter growth performance and stress behavior in cattle. Two treatments were evaluated 1) control, receiving feed without probiotics and 2) probiotics, receiving feed containing 10 g per head per day of probiotics (Probios feed granuels, Chr. Hansen, Inc.). Weekly body weight, average daily gain (ADG), feed efficiency, and behavior during a 10 minute novel object test (NOT) were measured in 33 female cattle > 1 year old (group 1) and seven 7-10 month old weaned calves (group 2). Group 2 calves had increased ADG and feed efficiency compared to control; however, no treatment differences were observed in group 1. Behavioral differences were observed during the NOT; however, one treatment was not clearly more stressed but rather may cope differently to the stressor. 

Keywords: Probiotics, Growth performance, Stress behavior

Topic(s):Agricultural Science

Presentation Type: Poster

Session: 2-
Location: GEO - SUB

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