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 Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Boldman, K. G. Articles by Van Vleck, L. D. Search for Related Content PubMed PubMed Citation Articles by Boldman, K. G. Articles by Van Vleck, L. D.

Genetic Trend for Milk Yield from Doe Evaluations in the Northeast United States

Department of Animal Science, Cornell University, Ithaca, NY 14853

ABSTRACT

Milk production records of 306 Alpine, 72 LaMancha, 170 Nubian, 84 Saanen, and 235 Toggenburg does born in the Northeast from 1972 through 1979 were used to estimate trends of additive genetic value. Estimated transmitting abilities were doubled and averaged for all does born in each year to obtain yearly estimates of genetic value. Genetic trends from regression of yearly mean genetic value on year of birth for Alpine, LaMancha, Nubian, Saanen, and Toggenburg averaged 11.4, –7.9, 1.9, 14.6, and 11.7 kg per year. Genetic trends were less than theoretically possible, indicating that more effective selection schemes are needed, although because of the limited number of does, the trends may not represent actual trends.

¹ Department of Animal Science, University of California, Davis 95616.

This article has been cited by other articles:

				P. Bijma, W. M. Muir, and J. A. M. Van Arendonk Multilevel Selection 1: Quantitative Genetics of Inheritance and Response to Selection Genetics, January 1, 2007; 175(1): 277 - 288. [Abstract] [Full Text] [PDF]