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Breed effects and heterosis for weight traits and tick count in a cross between an indigenous fat-tailed and a commercial sheep breed.
Published in:
Tropical Animal Health & Production, 2021, v. 53, n. 1, p. 1, doi. 10.1007/s11250-021-02612-7
By:
- Cloete, S. W. P.;
- Thutwa, K.;
- Scholtz, A. J.;
- Cloete, J. J. E.;
- Dzama, K.;
- Gilmour, A. R.;
- van Wyk, J. B.
Publication type:
Article
Impact of conformation traits on functional longevity in South African Holstein cattle.
Published in:
Animal Production Science, 2018, v. 58, n. 3, p. 481, doi. 10.1071/AN16387
By:
- Imbayarwo-Chikosi, V. E.;
- Ducrocq, V.;
- Banga, C. B.;
- Halimani, T. E.;
- Van Wyk, J. B.;
- Maiwashe, A.;
- Dzama, K.
Publication type:
Article
Estimates of variance components for feedlot traits of the Simmentaler breed in South Africa.
Published in:
South African Journal of Animal Science, 2021, v. 51, n. 6, p. 792, doi. 10.4314/sajas.v51i6.12
By:
- Hendriks, J.;
- Neser, F. W. C.;
- van Wyk, J. B.;
- Jordaan, F. J.;
- Scholtz, M. M.
Publication type:
Article
Multi-trait genetic evaluation for horn traits of economic importance in the Cape buffalo (Syncerus caffer caffer).
Published in:
South African Journal of Animal Science, 2019, v. 49, n. 2, p. 363, doi. 10.4314/sajas.v49i2.15
By:
- Lepori, A. A.;
- Josling, G. C.;
- Neser, F. W. C.;
- Lubout, P. C.;
- van Wyk, J. B.
Publication type:
Article
Evaluating horn traits of economic importance in sable antelope (Hippotragus niger niger).
Published in:
South African Journal of Animal Science, 2019, v. 49, n. 1, p. 40, doi. 10.4314/sajas.v49i1.5
By:
- Josling, G. C.;
- Lepori, A. A.;
- Neser, F. W. C.;
- Lubout, P. C.;
- van Wyk, J. B.
Publication type:
Article
Relationship of ewe reproduction with subjectively assessed wool and conformation traits in the Elsenburg Merino flock.
Published in:
South African Journal of Animal Science, 2018, v. 48, n. 1, p. 29, doi. 10.4314/sajas.v48i1.4
By:
- Matebesi-Ranthimo, P. A. M.;
- Cloete, S. W. P.;
- van Wyk, J. B.;
- Olivier, J. J.
Publication type:
Article
Genetic parameters for ewe reproduction with objectively measured wool traits in Elsenburg Merino flock.
Published in:
South African Journal of Animal Science, 2017, v. 47, n. 5, p. 712, doi. 10.4314/sajas.v47i5.15
By:
- Matebesi-Ranthimo, P. A. M.;
- Cloete, S. W. P.;
- van Wyk, J. B.;
- Olivier, J. J.
Publication type:
Article
Genetic prediction models and heritability estimates for functional longevity in dairy cattle.
Published in:
South African Journal of Animal Science, 2015, v. 45, n. 2, p. 105, doi. 10.4314/sajas.v45i2.1
By:
- Imbayarwo-Chikosi, V. E.;
- Dzama, K.;
- Halimani, T. E.;
- van Wyk, J. B.;
- Maiwashe, A.;
- Banga, C. B.
Publication type:
Article
Evaluation of cytoplasmic genetic effects for production and reproduction traits in Afrikaner cattle.
Published in:
South African Journal of Animal Science, 2014, v. 44, n. 5, p. S85, doi. 10.4314/sajas.v44i5.17
By:
- Neser, F. W. C.;
- van Wyk, J. B.;
- Scholtz, M. M.
Publication type:
Article
A preliminary investigation into genotype x environment interaction in South African Holstein cattle for reproduction and production traits.
Published in:
South African Journal of Animal Science, 2014, v. 44, n. 5, p. S75, doi. 10.4314/sajas.v44i5.15
By:
- Neser, F. W. C.;
- van Wyk, J. B.;
- Ducrocq, V.
Publication type:
Article
A preliminary investigation into genotype x environment interaction in South African Holstein cattle for reproduction and production traits.
Published in:
South African Journal of Animal Science, 2014, v. 44, n. 5, p. S75, doi. 10.4314/sajas.v44i5.15
By:
- Neser, F. W. C.;
- van Wyk, J. B.;
- Ducrocq, V.
Publication type:
Article
The relationships between faecal worm egg count and subjectively assessed wool and conformation traits in the Tygerhoek Merino flock.
Published in:
South African Journal of Animal Science, 2014, v. 44, n. 3, p. 220, doi. 10.4314/sajas.v44i3.3
By:
- Matebesi-Ranthimo, P. A. M.;
- Cloete, S. W. P.;
- van Wyk, J. B.;
- Olivier, J. J.
Publication type:
Article
Pedigree analysis of an ostrich breeding flock.
Published in:
South African Journal of Animal Science, 2012, v. 42, n. 2, p. 114
By:
- Fair, M. D.;
- Van Wyk, J. B.;
- Cloete, S. W. P.
Publication type:
Article
Divergent selection for reproduction affects dag score, breech wrinkle score and crutching time in Merinos.
Published in:
South African Journal of Animal Science, 2012, v. 42, n. 3, p. 274
By:
- Scholtz, A. J.;
- Cloete, S. W. P.;
- Cloete, J. J. E.;
- Kruger, A. C. M.;
- van Wyk, J. B.;
- de K. van der Linde, T. C.
Publication type:
Article
Correlated response in longevity from direct selection for production in the South African Jersey breed.
Published in:
South African Journal of Animal Science, 2012, v. 42, n. 1, p. 38, doi. 10.4314/sajas.v42i1.5
By:
- du Toit, J.;
- van Wyk, J. B.;
- Maiwashe, A.
Publication type:
Article
Assessment of inbreeding depression for functional herd life in the South African Jersey breed based on level and rate of inbreeding.
Published in:
South African Journal of Animal Science, 2012, v. 42, n. 1, p. 55, doi. 10.4314/sajas.v42i1.7
By:
- du Toit, J.;
- van Wyk, J. B.;
- Maiwashe, A.
Publication type:
Article
Relationships between functional herd life and conformation traits in the South African Jersey breed.
Published in:
South African Journal of Animal Science, 2012, v. 42, n. 1, p. 47, doi. 10.4314/sajas.v42i1.6
By:
- du Toit, J.;
- van Wyk, J. B.;
- Maiwashe, A.
Publication type:
Article
Parameter estimates for reproductive output and product quality traits of ostrich females within breeding seasons.
Published in:
South African Journal of Animal Science, 2011, v. 41, n. 1, p. 45, doi. 10.4314/sajas.v41i1.66041
By:
- Fair, M. D.;
- van Wyk, J. B.;
- Cloete, S. W. P
Publication type:
Article
Non-linear model analysis of categorical traits related to female reproduction efficiency in beef cattle.
Published in:
South African Journal of Animal Science, 2009, v. 39, n. 4, p. 260
By:
- Rust, T.;
- Schoeman, S. J.;
- van der Westhuizen, J.;
- van Wyk, J. B.
Publication type:
Article
Genetic parameters for subjectively assessed wool and conformation traits in the Tygerhoek Merino flock.
Published in:
South African Journal of Animal Science, 2009, v. 39, n. 3, p. 176, doi. 10.4314/sajas.v39i3.49148
By:
- Matebesi, P. A.;
- van Wyk, J. B.;
- Cloete, S. W. P.
Publication type:
Article
Relationships of subjectively assessed wool and conformation traits with objectively measured wool and live weight traits in the Tygerhoek Merino flock.
Published in:
South African Journal of Animal Science, 2009, v. 39, n. 3, p. 188, doi. 10.4314/sajas.v39i3.49150
By:
- Matebesi, P. A.;
- van Wyk, J. B.;
- Cloete, S. W. P.
Publication type:
Article
Long-term selection experiment with Afrikaner cattle 1. Environmental factors affecting calf growth traits.
Published in:
South African Journal of Animal Science, 2009, v. 39, n. 2, p. 89, doi. 10.4314/sajas.v39i2.44382
By:
- Beffa, L. M.;
- van Wyk, J. B.;
- Erasmus, G. J.
Publication type:
Article
Long-term selection experiment with Afrikaner cattle 4. Cow fertility and calf survival.
Published in:
South African Journal of Animal Science, 2009, v. 39, n. 2, p. 114, doi. 10.4314/sajas.v39i2.44385
By:
- Beffa, L. M.;
- van Wyk, J. B.;
- Erasmus, G. J.
Publication type:
Article
Long-term selection experiment with Afrikaner cattle 3. Selection applied and response in calf growth traits.
Published in:
South African Journal of Animal Science, 2009, v. 39, n. 2, p. 106, doi. 10.4314/sajas.v39i2.44384
By:
- Beffa, L. M.;
- van Wyk, J. B.;
- Erasmus, G. J.
Publication type:
Article
Long-term selection experiment with Afrikaner cattle 2. Genetic parameters and genotype x environment interaction for calf growth traits.
Published in:
South African Journal of Animal Science, 2009, v. 39, n. 2, p. 98, doi. 10.4314/sajas.v39i2.44383
By:
- Beffa, L.M.;
- van Wyk, J. B.;
- Erasmus, G. J.
Publication type:
Article
Genetic parameter estimation of 16-month live weight and objectively measured wool traits in the Tygerhoek Merino flock.
Published in:
South African Journal of Animal Science, 2009, v. 39, n. 1, p. 73, doi. 10.4314/sajas.v39i1.43549
By:
- Matebesi, P. A.;
- Cloete, S. W. P.;
- van Wyk, J. B.
Publication type:
Article
Genetic parameter estimates for functional herd life for the South African Jersey breed using a multiple trait linear model.
Published in:
South African Journal of Animal Science, 2009, v. 39, n. 1, p. 40, doi. 10.4314/sajas.v39i1.43544
By:
- du Toit, J.;
- van Wyk, J. B.;
- Maiwashe, A.
Publication type:
Article
Across flock genetic parameter estimation for yearling body weight and fleece traits in the South African Dohne Merino population.
Published in:
South African Journal of Animal Science, 2008, v. 38, n. 1, p. 31, doi. 10.4314/sajas.v38i1.4106
By:
- van Wyk, J. B.;
- Swanepoel, J. W.;
- Cloete, S. W. P.;
- Olivier, J. J.;
- Delport, G. J.
Publication type:
Article
Inbreeding in the Dohne Merino breed in South Africa.
Published in:
South African Journal of Animal Science, 2007, v. 37, n. 3, p. 176
By:
- Swanepoel, J. W.;
- van Wyk, J. B.;
- Cloete, S. W. P.;
- Delport, G. J.
Publication type:
Article
Variance component estimation for reproductive merit of beef cattle using linear and non-linear models.
Published in:
South African Journal of Animal Science, 2004, v. 34, n. 6, p. 59
By:
- Rust, T.;
- Van der Westhuizen, J.;
- Schoeman, S. J.;
- Van Wyk, J. B.
Publication type:
Article
Is genetic selection for skin nodule traits of ostriches feasible?
Published in:
South African Journal of Animal Science, 2004, v. 34, n. 6, p. 29, doi. 10.4314/sajas.v34i6.3822
By:
- Meyer, A.;
- Cloete, S. W. P.;
- Van Wyk, J. B.;
- Van Schalkwyk, S. J.
Publication type:
Article
Model comparisons and genetic and environmental parameter estimates of growth and the Kleiber ratio in Horro sheep.
Published in:
South African Journal of Animal Science, 2005, v. 35, n. 1, p. 30
By:
- Abegaz, S.;
- Van Wyk, J. B.;
- Olivier, J. J.
Publication type:
Article
Genetic parameters for growth traits in South African Brahman cattle.
Published in:
South African Journal of Animal Science, 2004, v. 34, n. 6, p. 44, doi. 10.4314/sajas.v34i6.3827
By:
- Pico, B. A.;
- Neser, F. W. C.;
- Van Wyk, J. B.
Publication type:
Article
Estimates of genetic and environmental (co)variances for live weight and fleece traits in yearling South African Mutton Merino sheep.
Published in:
South African Journal of Animal Science, 2004, v. 34, n. 1, p. 37
By:
- Cloete, S. W. P.;
- Van Wyk, J. B.;
- Neser, F. W. C.
Publication type:
Article
Revised models and genetic parameter estimates for production and reproduction traits in the Elsenburg Dormer sheep stud.
Published in:
South African Journal of Animal Science, 2003, v. 33, n. 4, p. 213
By:
- Van Wyk, J. B.;
- Fair, M. D.;
- Cloete, S. W. P.
Publication type:
Article
Genetic parameters and trends for birth weight, birth coat score and weaning weight in Merino lines divergently selected for ewe multiple rearing ability.
Published in:
South African Journal of Animal Science, 2003, v. 33, n. 4, p. 248
By:
- Cloete, S. W. P.;
- Olivier, J. J.;
- Van Wyk, J. B.;
- Erasmus, G. J.;
- Schoeman, S. J.
Publication type:
Article
Genetic parameters for reproductive traits in a beef cattle herd estimated using multitrait analysis.
Published in:
South African Journal of Animal Science, 2001, v. 31, n. 1, p. 41, doi. 10.4314/sajas.v31i1.3846
By:
- van der Westhuizen, R. R.;
- Schoeman, S. J.;
- Jordaan, G. F.;
- van Wyk, J. B.
Publication type:
Article
The heritability of acceptability in South African Merino sheep.
Published in:
South African Journal of Animal Science, 2001, v. 31, n. 1, p. 13, doi. 10.4314/sajas.v31i1.3842
By:
- Erasmus, G. J.;
- van Wyk, J. B.;
- Neser, F. W. C.;
- Olivier, J. J.
Publication type:
Article
Heritability estimates derived from threshold analyses for reproduction and stayability traits in a beef cattle herd.
Published in:
South African Journal of Animal Science, 2001, v. 31, n. 1, p. 25, doi. 10.4314/sajas.v31i1.3844
By:
- van der Westhuizen, R. R.;
- Jordaan, G. F.;
- Schoeman, S. J.;
- van Wyk, J. B.
Publication type:
Article
Genetic trends in a South African Mutton Merino nucleus breeding scheme.
Published in:
South African Journal of Animal Science, 1999, v. 29, n. 1, p. 48
By:
- Gray, H. Q.;
- Neser, F. W. C.;
- Erasmus, G. J.;
- van Wyk, J. B.
Publication type:
Article
Evaluation of pelt traits in Karakul sheep applying linear and threshold models.
Published in:
South African Journal of Animal Science, 1999, v. 29, n. 1, p. 11
By:
- Lourens, A.;
- Erasmus, G. J.;
- van Wyk, J. B.;
- Schoeman, S. J.;
- Neser, F. W. C.;
- Steyn, M. G.
Publication type:
Article
Alternative testing procedures to measure feed intake and growth rate in South African beef cattle.
Published in:
Applied Animal Husbandry & Rural Development, 2020, v. 13, n. 1, p. 55
By:
- Hendriks, J.;
- Scholtz, M. M.;
- van Wyk, J. B.;
- Neser, F. W. C.
Publication type:
Article
A survey of the prevalence of blowfly strike and the control measures used in the Rûens area of the Western Cape Province of South Africa.
Published in:
Journal of the South African Veterinary Association, 2011, v. 82, n. 2, p. 107, doi. 10.4102/jsava.v82i2.43
By:
- Scholtz, A. J.;
- Cloete, S. W. P.;
- du Toit, E.;
- van Wyk, J. B.;
- de K van der Linde, T. C.
Publication type:
Article

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