(Co)variances for reproduction, egg weight and chick weight in ostriches

South African Journal of Animal Science

Volumn 34, Issue 6SUPPL.2, 2004, Pages 17-19

  Cloete, S W P ^a   Bunter, K L ^b   Brand, Z ^c   Lambrechts, H ^c  

^a Elsenburg Agricultural Centre   (South Africa)

^b UNIVERSITY OF NEW ENGLAND   (Australia)

^c Klein Karoo Agricultural Development Centre   (South Africa)

Author keywords

Breeding values; Chick production; Egg production; Genetic correlations; Heritability

Indexed keywords

EID: 33646514820     PISSN: 03751589     EISSN: None     Source Type: Journal    
DOI: 10.4314/sajas.v34i6.3818     Document Type: Article

References (10)

1. Bunter, K.L., 2002. The Genetic Analysis of Reproduction and Production Traits Recorded for Farmed Ostriches (Struthio camelus). Ph. D. dissertation, University of New England, Armidale, Australia.
2. Bunter, K.L., Cloete, S.W.P., Van Schalkwyk, S.J. & Graser, H.-U., 2001a. Factors affecting reproduction in farmed ostriches. Proc. Assoc. Advmnt Anim. Breed. Genet. 14, 43-46.
3. Bunter, K.L., Cloete, S.W.P., Van Schalkwyk, S.J. & Graser, H.U., 2001b. Relationships between measures of reproductive performance in farmed ostrich hens. Proc. Assoc. Advmnt Anim. Breed. Genet. 14, 47-50.
4. th World Cong. Genet. Appl. Livest. Prod. 30, 561-568. 18-23 August, Montpellier, France.
5. st Joint Cong. Grassl. Soc. Sthn. Afr. & S. Afr. Soc. Anim. Sci., 13-16 May 2002, Christiana Aventura, 81.
6. Cloete, S.W.P., Lambrechts, H., Punt, K. & Brand, Z., 2001. Factors related to high levels of ostrich chick mortality to 90 days after hatching in an intensive rearing system. J. S. Afr. Vet. Assoc. 72, 197-202.
7. nd Int. Ratite Cong., 21-25 September 1998, Oudtshoorn. pp. 55-62.
8. Gilmour, A.R., Cullis, B.R., Welham, S.J. & Thompson, R., 1999. ASREML-Reference manual. NSW Agriculture Biometric Bulletin No. 3. NSW Agriculture, Orange Agricultural Institute, Forest Road, Orange 2800, NSW, Australia.
9. Gowe, R.S. & Fairfull, R.W., 1995. Breeding and genetics of egg laying chickens. In: Poultry Production. Ed: Hunton, P., World Animal Science: Volume 9, Sub-series C: Production System Approach, Elsevier, The Netherlands. pp. 435-456.
10. Van Schalkwyk, S.J., Cloete, S.W.P. & De Kock, J.A., 1996. Repeatability and phenotypic correlations for live weight and reproduction in commercial ostrich breeding pairs. Br. Poult. Sci. 37, 953-962.