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Factors affecting growth of ovine foetuses during early gestation

Published online by Cambridge University Press:  02 September 2010

C. V. Hulet ,
W. C. Foote  and
D. A. Price
C. V. Hulet
Affiliation:
U.S. Department of Agriculture, U.S. Sheep Experiment Station Agricultural Research Service, Dubois, Idaho and Department of Animal Science, Utah State University, Logan
W. C. Foote
Affiliation:
U.S. Department of Agriculture, U.S. Sheep Experiment Station Agricultural Research Service, Dubois, Idaho and Department of Animal Science, Utah State University, Logan
D. A. Price
Affiliation:
U.S. Department of Agriculture, U.S. Sheep Experiment Station Agricultural Research Service, Dubois, Idaho and Department of Animal Science, Utah State University, Logan
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Summary

Year, type of gestation (single or twin foetuses) and age of foetus all had highly significant independent effects on both foetal weight and length (P>0·01). Twin foetuses were both longer and heavier than single foetuses at 21 to 30 days post coitum. Continuous illumination, continuous darkness and intermittent light appeared to reduce foetal length and weight (P>0·05). Control foetuses were longer and heavier than those on other treatments. Neither feeding level (75 to 150% N.R.C. maintenance requirements) nor body weight of the dam had significant effects on foetal size within the age range studied.

Type
Research Article
Information
Animal Production , Volume 11 , Issue 2 , May 1969 , pp. 219 - 223
Copyright
Copyright © British Society of Animal Science 1969

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References

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