J. Anim Sci.
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J. Anim Sci. 1960. 19:616-619.
© 1960 American Society of Animal Science
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A Study of Pre-Weaning Death Losses in Lambs1

R. L. Vetter2, H. W. Norton and U. S. Garrigus

Illinois Agricultural Experiment Station,3 Urbana

Abstract

Mortality data to 120 days of age are reported for 4,231 lambs from purebred Hampshire, Rambouillet, Shropshire, and Southdown flocks maintained at the University of Illinois from 1921 to 1957 inclusive.

Losses of single lambs were 15% compared with 23% of twins. Hampshires showed an average death loss of 23%; Rambouillets, 15%; Shropshires, 17%; and, Southdowns, 21%.

Footnotes

1 Acknowledgement is made to W. J. Hampton, foreman of the University of Illinois sheep farm during the entire 37 years included in this study, for keeping the original flock records.

2 Present address: Animal Husbandry Department, University of Wisconsin, Madison 6, Wisconsin.

3 Department of Animal Science, University of Illinois.






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