HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Baker, A. L. Articles by Black, W. H. Search for Related Content PubMed Articles by Baker, A. L. Articles by Black, W. H.

The Relative Accuracy of One-Day and Three-Day Weaning Weights of Calves

United States Department of Agriculture¹

Abstract

A study of weights taken on 178 calves immediately before weaning time, when they averaged about 232 days of age, has shown that there was no advantage in taking weights on 3 days, over taking a single weight, when uniform conditions for the calves were maintained.

Calves lost some weight during the 3 days, the respective average daily weights being 42.5.9, 425.0 and 422.9. The 3-day average of 424.6 did not differ significantly from the weight taken on the first day.

After dividing into weight classes, with 20-pound intervals, the standard errors of single and 3-day weights were compared. In 14 classes having 4 to 23 animals each, the standard error was lower in the first-day weights in all classes than in the 2nd and 3rd-day weights and in the 3-day average. The standard error of the 2nd-day weights was lower than that of the 3rd-day weights in 9 of the 14 classes.

¹ Iberia Livestock Experiment Farm, Jeanerette, La. and Agricultural Research Center, Beltsville, Md. The authors are indebted to G. A. Fortier, Agricultural Aide, who obtained the weights used in this study.