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


     

J. Anim Sci. 1976. 42:317-323.
© 1976 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 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 Hohenboken, W. D.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Hohenboken, W. D.

Genetic, Environmental and Interaction Effects in Sheep III. Wool Production and Gross Income per Ewe1

William D. Hohenboken2

Oregon State University, Corvallis 97331

Abstract

Genetic, environmental and interaction effects on wool production and on gross income per ewe joined from slaughter lamb, feeder lamb and wool production are reported from a diallel cross among three breeds replicated over 3 years and two grazing management systems. Grazing on hill pastures resulted in less annual wool production but a higher proportion of lambs going directly to slaughter at weaning, higher gross income from slaughter lamb and higher total gross income than did grazing on irrigated pastures. Willamette ewes (a 50% Columbia, 25% Dorset Horn, 25% Border Cheviot strain) excelled in wool production and total gross income. Suffolk sire and dam effects were high for proportion of lambs slaughtered at weaning and for income from slaughter lamb. Sire effects for total gross income were largest and were nearly equal for Hampshires and Suffolks. Crossbred advantage for total gross income per ewe averaged 12.3%. Proportion of lambs slaughtered at weaning was 48 and 43% for crossbreds and straightbreds, respectively. Heterosis for gross income from slaughter lamb was 24%. Heterosis was least for crosses involving Hampshire dams. There was an important ewe breed x management interaction for total gross income. On irrigated pastures, Suffolks and Willamettes were nearly identical, but on hill pastures Willamettes exceeded Suffolks. Crossbred matings grossed 25.8% more income than straightbred matings under irrigated management, but only 1.9% more on hill pastures.

Footnotes

1 Technical paper no. 3866, Oregon Agricultural Experiment Station.

2 Department of Animal Science.






HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1976 by the American Society of Animal Science.