Genetic analysis of faecal worm egg count in South African Merinos under natural challenge (2007)
Cloete, SWP, Olivier, JJ, Du Toit, E, Dreyer, FH
Sheep from a Merino selection experiment at the Tygerhoek research farm in the Southern Cape provided material for this study. The selection lines involved included a line selected for clean fleece...
Van Schalkwyk, SJ, Cloete, SWP, Hoffman, LC, Meyer, A
No Abstract. South African Journal of Animal Science Vol. 35 (1) 2005: pp.48-54
Muller, CJC, Cloete, SWP, Olivier, JJ, Botha, JA, De Waal, H
Genetic and environmental parameters for live weight and condition score have been determined for Holstein cows. Genetic correlations with milk traits were also derived. Monthly records were modelled...
The effects of dietary energy and protein concentrations on ostrich skin quality (2006)
Cloete, SWP, Van Schalkwyk, SJ, Brand, TS, Hoffman, LC, Nel, CJ
The effects were investigated of energy and protein concentrations (with associated amino acid concentrations) in ostrich diets on leather quality of the skins of 50 ostriches. Energy concentrations...
Cloete, SWP, Cloete, JJE, Herselman, MJ, Hoffman, LC
The production performance of ewes was assessed in a terminal crossbreeding experiment involving five Merino and Merino-type dam lines and two terminal crossbreeding sire breeds. Dam lines were SA...
Sperm storage and duration of fertility in female ostriches (Struthio camelus) (2005)
Malecki, IA, Cloete, SWP, Gertenbach, WD, Martin, GB
In two experiments, one carried in South Africa and the other in Western Australia, the duration of sperm storage and the fertile period following separation of sexes were investigated by egg...
Lambrechts, H, Swart, D, Cloete, SWP, Greyling, JPC, Van Schalkwyk, SJ
The study provides information on the reproductive performance of ostriches maintained at different stocking rates and male:female (M:F) ratios under intensive commercial conditions in the Little...
(Co)variances for reproduction, egg weight and chick weight in ostriches (2004)
Cloete, SWP, Bunter, KL, Brand, Z, Lambrechts, H
The study investigated genetic parameters for egg and chick production recorded over an 8-month breeding season, as well as average egg and chick weight for pair-bred ostrich females. Estimates of...
Differentiation between females of ostrich breeding trios based on egg weights (2004)
Data, collected during the 1997-1998 breeding season from 14 ostrich trios, were used to determine whether two females in a trio could be differentiated based on egg size. For eight of the trios a...
Is genetic selection for skin nodule traits of ostriches feasible? (2004)
Meyer, A, Cloete, SWP, Van Wyk, JB, Van Schalkwyk, SJ
Preliminary genetic parameters for nodule traits of ostrich skins were estimated to examine whether genetic improvement of skin quality is feasible. Average nodule size and density per...
Naidoo, P, Cloete, SWP, Olivier, JJ
Data from 2801 individuals (born from 1996 to 2002) were used to obtain heritability (h2) estimates for five objectively measured and six linearly assessed type fleece traits (scored on a 1-50 point...
Effect of age on leather and skin traits of slaughter ostriches (2004)
Cloete, SWP, Van Schalkwyk, SJ, Hoffman, LC, Meyer, A
Little is known about the factors affecting leather and skin traits in ostriches. The effect of age on physical skin traits of slaughter ostriches was consequently investigated. Forty skins...
The influence of separate-sex rearing on ostrich behaviour and skin damage (2004)
Meyer, A, Cloete, SWP, Brown, CR
Separate-sex rearing of slaughter ostriches was investigated as a management strategy to minimize skin damage. Day-old ostrich chicks were divided into three treatment groups; a group of mixed-gender...
Van Wyk, JB, Fair, MD, Cloete, SWP
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...
Cloete, SWP, Cloete, JJE, Durand, A, Hoffman, LC
This study details the production performance of ewes and lambs that originated from a terminal crossbreeding experiment that involved five Merino type dam lines and two terminal crossbreeding sire...
Cloete, SWP, Olivier, JJ, Van Wyk, JB, Erasmus, GJ, Schoeman, SJ
Data were recorded for birth weight, birth coat score and weaning weight of between 2018 and 4235 Merino lambs born over a 17-year interval from 1986 to 2002. The resource population was divergently...
Cloete, SWP, Scholtz, AJ, Taljaard, R
Timing of birth and birth site selection were investigated in two lines of grazing Merino sheep that had been divergently selected for multiple rearing ability. Time budgets in the neonatal phase...
Cloete, SWP, Van Wyk, JB, Neser, FWC
No Abstract. South African Journal of Animal Science Vol. 34 (1) 2004: pp.37-43
Cloete, JJE, Hoffman, LC, Cloete, SWP, Fourie, JE
No Abstract. South African Journal of Animal Science Vol. 34 (1) 2004: pp.44-51
Short Communication Inbreeding in the Dohne Merino breed in South Africa (1970)
Swanepoel, JW, Van Wyk, JB, Cloete, SWP, Delport, GJ
The actual level of inbreeding and the effect of inbreeding depression on yearling body weight and fleece traits in the South African Dohne Merino population were investigated. All available pedigree...