J. Anim Sci.
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Stein, T. E.
Right arrow Articles by Wickstrom, S.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Stein, T. E.
Right arrow Articles by Wickstrom, S.

Journal of Animal Science, Vol 68, Issue 12 3972-3979, Copyright © 1990 by American Society of Animal Science

JOURNAL ARTICLE

Differences in production values between high- and low-productivity swine breeding herds

T. E. Stein, S. J. Duffy and S. Wickstrom
Dept. of Large Anim. Clin. Sci., University of Minnesota, St. Paul 55108.

Data were collected from 80 North American users of a computerized health and management software program for the period August 1985 through July 1986. Fifty-four herds were selected for analysis based on selection criteria of 1) stable herd inventory, 2) complete recorded data, 3) weaning-to-first service interval greater than 3 d and less than 20 d, and 4) culling rate greater than 10%. These herds had an average of 18.2 pigs weaned/(female.year) (PWFY), 2.1 litters/(female.year) (LFY), 81% farrowing rate, 10.2 pigs born live/litter and 14.5% preweaning mortality. Compared with the 14 herds with the lowest values for pigs weaned/(female.year), high-productivity herds (i.e., the 14 herds with the highest values for PWFY) had higher LFY, farrowing rate, total and live pigs born/litter and sow-gilt ratio; they also had lower nonproductive female days (NPFD), lower preweaning mortality and fewer gilts as a proportion of female inventory. Herd size and PWFY were not correlated. A negative correlation between herd size and pigs born live remained after controlling for average lactation length (r = -.30). Nonproductive female days was highly correlated with LFY (r = -.87). Increasing herd age, measured by the sow-gilt ratio, was associated mainly with a reduction in NPFD, although there was a slight positive association with pigs born alive (r = .29).


This article has been cited by other articles:


Home page
 J ANIM SCIHome page
Y. Sasaki and Y. Koketsu
Mortality, death interval, survivals, and herd factors for death in gilts and sows in commercial breeding herds
J Anim Sci, November 1, 2008; 86(11): 3159 - 3165.
[Abstract] [Full Text] [PDF]

Home page
 J ANIM SCIHome page
Y. Koketsu
Technical note: High-performing swine herds improved their reproductive performance differently from ordinary herds for five years
J Anim Sci, November 1, 2007; 85(11): 3110 - 3115.
[Abstract] [Full Text] [PDF]

Home page
 J ANIM SCIHome page
Y. Koketsu
Longevity and efficiency associated with age structures of female pigs and herd management in commercial breeding herds
J Anim Sci, April 1, 2007; 85(4): 1086 - 1091.
[Abstract] [Full Text] [PDF]

Home page
 J ANIM SCIHome page
Y. Koketsu
Six component intervals of nonproductive days by breeding-female pigs on commercial farms
J Anim Sci, June 1, 2005; 83(6): 1406 - 1412.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1990 by the American Society of Animal Science.