Skip to main content Accessibility help
×
Home

A note on some factors influencing post-weaning performance of purebred and crossbred lambs

  • A. P. Mavrogenis (a1) and A. Louca (a1)

Abstract

Live weights at weaning, and 10, 15 and 20 weeks of age, and postweaning gains of 738 lambs (390 males and 348 females) obtained from purebred and crossbred lambs were studied. The main breeds involved were the Cyprus fat-tailed, Chios and Awassi. Male lambswere heavier (P< 0·01) and grew faster (P< 0·01) than female lambs. Singles were heavier (P< 0·01) than other multiples at all ages, which probably reflects differences in initial weight, since no differences were found in growth rate. Crossbred lambs were heavier at 20 weeks of age and had a faster growth rate than purebred lambs. Ewe lactation number significantly affected lamb weaning weights, the heaviest lambs being those from 3- to 5-year-old dams (third and fourth lactation).

Copyright

References

Hide All
Bichard, M. and Cooper, M. McG. 1966. Analysis of production records from a lowland sheep flock. 1. Lamb mortality and growth to 16 weeks. Anim. Prod. 8: 401410.
Carter, R. C, Carman, G. M., McClaugherty, F. S. and Haydon, P. S. 1971. Genotype environment interaction in sheep. II. Lamb performance traits. J. Anim. Sci. 33: 732735.
Donald, H. P., Read, J. L. and Russell, W. S. 1963. Heterosis in crossbred hill sheep. Anim. Prod. 5: 289299.
Fimland, E., Eri, J., Liland, P. J. and Gjedrem, T. 1969. Resultat fra kryssningsforsok med sau. Meld. Norg. LandbrHoisk. 13: No. 35.
Gjedrem, T. 1966. Selection index for ewes. Acta Agric. scand. 16: 2129.
Gjedrem, T. 1967. Phenotypic and genetic parameters for weight of lambs at five ages. Acta Agric. scand. 17: 199216.
Harvey, W. R. 1975. Least squares analysis of data with unequal subclass numbers. US Dep. Agric, ARS-H-4.
Hohenboken, W. D., Kennick, W. H. and Bogart, R. 1976. Genetic, environmental and interaction effects in sheep. II. Lamb growth and carcass merit. J. Anim. Sci. 42: 307316.
Lawlor, M. J., Louca, A. and Mavrogenis, A. 1974. The effect of three suckling regimes on the lactation performance of Cyprus fat-tailed, Chios and Awassi sheep and the growth rate of the lambs. Anim. Prod. 18: 293299.
Louca, A., Mavrogenis, A. and Lawlor, M. J. 1974. Effects of plane of nutrition in late pregnancy on lamb birth weight and milk yield in early lactation of Chios and Awassi sheep. Anim. Prod. 19: 341349.
Mavrogenis, A., Louca, A. and Lawlor, M. J. 1973. The use of grape seed meal and barley straw in lamb fattening diets. Agric. Res. Inst. Tech. Bull. No. 12, Nicosia, Cyprus.
Sidwell, G. M., Everson, D. O. and TERRILL, CLAIR E. 1964. Lamb weights in some pure breeds and crosses. J. Anim. Sci. 23: 105110.
Sidwell, G. M. and Miller, L. R. 1971. Production in some pure breeds of sheep and their crosses. II. Birth weights and weaning weights of lambs. J. Anim. Sci. 32: 10901094.

A note on some factors influencing post-weaning performance of purebred and crossbred lambs

  • A. P. Mavrogenis (a1) and A. Louca (a1)

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed