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 Turner, C. W. Search for Related Content PubMed Articles by Turner, C. W.

A Quantitative Form of Expressing Persistency of Milk or Fat Secretion

Department of Dairy Husbandry, University of Missouri, Columbia, Missouri

ABSTRACT

1. When all other conditions are uniform, the monthly milk or fat production during the lactation period after the maximum is passed, is a constant percentage of the preceding month's production.
   
2. Pregnancy, seasonal changes of environmental temperature, nutrition, and management may cause slight changes in the rate of decline of milk and fat secreted.
   
3. Two methods for the quantitative determination of persist ency of milk secretion are explained with a discussion of their relative merits.
   
4. The use of a combination of these methods in predicting total yearly production from the first part of the record by the use of the maximum month's yield and the persistency of production shown during that period was illustrated.
   
5. The uses of a quantitative index for persistency of secretion of milk or fat by dairy cattle in relation to problems of breeding, feeding, and management were indicated.