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"Experientia docet" - Experience is the best teacher

Relationship between early growth traits in Elsenburg Dormer sheep stud

  • 1993
  • Issue: 3
  • Volume: 23
J.B. van Wyk,· G.J. Erasmus, K.V. Konstantinov and J. van der Westhuizen Page: 81 - 84

Correlations were estimated from a total of 7740 lamb records, collected from 1943 to 1990, from the progeny of 215 sires of the registered Elsenburg Dormer sheep stud. Phenotypic correlations were generally positive and medium to high except for a…

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Revised models and genetic parameter estimates for production and reproduction traits in the Elsenburg Dormer sheep stud

  • 2003
  • Issue: 4
  • Volume: 33
J.B. van Wyk, M.D. Fair and S.W.P. Cloete Page: 213 - 222

Genetic parameters for production and reproduction traits in the Elsenburg Dormer sheep stud were estimated using records of 11743 lambs born between 1943 and 2002. An animal model with direct and maternal additive, maternal permanent and temporary environmental effects was…

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Inbreeding in the Elsenburg Dormer sheep stud

  • 1993
  • Issue: 3
  • Volume: 23
J.B. van Wyk, G.J. Erasmus and K.V. Konstantinov Page: 77 - 80

Data of the Elsenburg Dormer sheep stud which was kept closed since its inception, were collected over a period of 50 years (1941-1990). These data were analysed to monitor the increase in actual level of inbreeding and to investigate the…

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