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


     

J. Anim Sci. 1983. 57:802-806.
© 1983 American Society of Animal Science
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 Google Scholar
Google Scholar
Right arrow Articles by Jungst, S. B.
Right arrow Articles by Kuhlers, D. L.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Jungst, S. B.
Right arrow Articles by Kuhlers, D. L.

Effect of Teat Number, Teat Abnormalities and Underline Length on Litter Sizes and Weight at 21 and 42 Days in Swine1

Steve B. Jungst2 and Daryl L. Kuhlers2

Auburn University, AL 36849

Abstract

Data from 80 first-litter purebred and crossbred gilts of Duroc and Landrace breeding were analyzed to determine the effects of traits associated with their udder on the sizes and weights of their litters at 21 and 42 d. Traits measured on each first-litter gilt included: number of teats in front of the navel; number of functional teats; number of inverted and pin nipples; length of the underline; body length and weight at parturition. When the litter size nursed at 1 d was held constant, litter size at 21 and 42 d was not influenced by number of teats in front of the navel, number of functional teats, number of inverted nipples, number of pin nipples, body length or weight at parturition. First litter gilts with shorter underlines tended to raise larger litters at 21 and 42 d (P<.05). Litter weights at 21 and 42 d were not affected by the number of teats in front of the navel, number of functional teats, number of inverted nipples, or by the number of pin nipples when the size and weight of the litters born alive were held constant. First-litter gilts with shorter body lengths tended to have heavier litters at 21 d, (P<.05) while those with shorter underlines (P<.05) and those that weighed more at parturition (P<.10) tended to have heavier litters at 42 d. Results from this study are interpreted to indicate a replacement-gilt selection program that applies selection pressure for only increased teat number and against teat abnormalities seems unwarranted.

Footnotes

1 Contribution from the Alabama Agr. Exp. Sta., Journal Series No. 4-820224.

2 Dept. of Anim. and Dairy Sci.






HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1983 by the American Society of Animal Science.