Hostname: page-component-848d4c4894-2xdlg Total loading time: 0 Render date: 2024-07-08T04:53:06.888Z Has data issue: false hasContentIssue false
  • English
  • Français

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
Get access

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

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Asker, A. A. and Ragab, M. T. 1952. Causes of variation in birth weight of Egyptian cattle and buffaloes. Indian J. vet. Sci. 22: 265–272.Google Scholar
Harvey, W. R. 1966. Least-square analysis of data with unequal subclass numbers. United States Dept. Agriculture ARS-20-8.Google Scholar
Howe, J. W. 1946. The effects of varying amounts of Zebu blood in the adaptability of dairy cattle to conditions in Jamaica. Ph.D. Thesis, Iowa State College, Ames, la.Google Scholar
Katpatal, B. G. 1970. The fraction of Holstein breeding in Holstein-dairy Zebu crosses resulting in maximum milk production and growth in India. Ph.D. Thesis, Illinois State College, Urbana, Illinois.Google Scholar
Kramer, C. Y. 1957. Extension of multiple range tests to group correlated adjusted means. Biometrics 13: 13–17.CrossRefGoogle Scholar
Naidu, K. N. and Desai, R. N. 1965. Genetic studies on Holstein Friesian × Sahiwal cattle. II. Characters of growth and age at first calving. Indian J. vet. Sci. 35: 204–212.Google Scholar
Rathore, A. 1949. Differences in growth of Sindhi and crosses of Sindhi with Jersey, Brown-Swiss, Holstein Friesian and Guernsey cattle. Ph.D. Thesis, Iowa State College, Ames, la.Google Scholar