21st Annual Student Research Conference
Efficacy of Subjective Visual Udder Scores in Beef Cows for the Prediction of Lactation Potential and Weaning Weight of Their Calves
Rebecca E. Pace
Dr. Glenn R. Wehner, Faculty Mentor
A Univ. of Georgia study using udder scores and calf growth stated milk production (MP) could be predicted using subjective udder scoring. We appraised 9 cow/calf pairs (summer, 2006) and 13 cow/calf pairs (summer, 2007). Visual appraisal included body condition score (BCS), udder attachment, udder depth (UD), and teat size. Physical measurements of udder length (UL), depth (UD); front and back teat length (FTL & BTL); top, middle, and bottom teat width (TW, MW, BW) were collected. There are high correlations between UL, UD, FTL, BTL, MW, and MP; low correlation between opposing sides of udder, TW and BW to MP. Weigh-suckle-weigh was used for three 24-hour milk estimates throughout the grazing seasons. Statistical analysis concluded cows with smaller teats produced less milk due to decreased suspension, UL, and less teat for calves to suckle, while cows with larger teats, greater depth, longer udders, and consistent MW produce more milk.
Keywords: Milk Production, Udder Length, Udder Depth, Teat Width, Teat Length, Udder Attachment, Body Condition Score, Weaning Weights
Topic(s):Agricultural Science
Presentation Type: Oral Paper
Session: 29-1
Location: VH 1428
Time: 1:15