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An analysis of pre-weaning deaths in rabbits with special emphasis on enteritis and pneumonia. I. Non-genetic sources of variation

Published online by Cambridge University Press:  02 September 2010

W. C. Rollins  and
R. B. Casady
W. C. Rollins
Affiliation:
Department of Animal Husbandry, University of California, Davis, California, U.S.A.
R. B. Casady
Affiliation:
Animal Husbandry Research Division, U.S.D.A. Beltsville, Maryland, U.S.A.
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Extract

Non-genetic sources of variation in pre-weaning death losses due to enteritis or pneumonia have been investigated using records of 15,329 rabbits born during the years 1946–61 in the random bred colony at the U.S. Rabbit Experiment Station at Fontana, California. Under consideration were periods of years, season within years, litter size, parity of doe, and fostering.

For enteritis there was a statistically significant effect of season due to a negative regression of death rate on ambient temperature. For pneumonia, periods of years were statistically significant due to an increase in later years in deaths during the first 14 days of life. The other sources of variation studied were of negligible importance.

Type
Research Article
Information
Animal Production , Volume 9 , Issue 1 , February 1967 , pp. 87 - 92
Copyright
Copyright © British Society of Animal Science 1967

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References

REFERENCES

Hagen, Karl W. Jnr., 1956. Infectious diseases of the rabbit, pp. 559–563. In: Animal Diseases—The Yearbook of Agriculture 1956, The United States Department of Agriculture, Washington, D.C. The U.S. Government Printing Office, xiv, 391 pp.Google Scholar
Harvey, Walter R., Casady, Robert B., Suitor, A. E., & Mize, K. E., 1961. Prenatal and postnatal effects in rabbits. J. Anim. Sci., 20: 907 (Abstr.).Google Scholar