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Genetic and non-genetic factors affecting body weights in Sahiwal × Friesian crosses

Published online by Cambridge University Press:  02 September 2010

V. K. Taneja  and
P. N. Bhat
V. K. Taneja
Affiliation:
Punjab Agricultural University, Hissar-Ludhiana, India
P. N. Bhat
Affiliation:
Punjab Agricultural University, Hissar-Ludhiana, India
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Summary

The data were collected from seven dairy farms in India on Sahiwal × Friesian crosses over a period of 30 years (1937–1966). There were nine distinct genetic groups (grades); Sahiwal, 1/8, 1/4, 3/8, 1/2, 5/8, 3/4 and 7/8 Friesian and Indian Friesians (animals having 15/16 or more Friesian blood).

Least-square analysis of variance was run to examine the effects of grades, farms, periods, seasons, and breed of sire on body weights at birth, 19 weeks, 12 months and 3 years. The effects due to grades, farms and periods were significant for all the traits. The effects due to season and breed of sire were significant for all traits except for weight at 3 years.

The least-square constants showed that, with increase in Friesian inheritance, birth weight increased considerably, while the increase in body weights at 19 weeks, 12 months and 3 years was only marked up to the 1/2-Friesian group.

Type
Research Article
Information
Animal Production , Volume 14 , Issue 3 , June 1972 , pp. 295 - 298
Copyright
Copyright © British Society of Animal Science 1972

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References

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