SUNScholar
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Faculty of AgriSciences
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Department of Animal Sciences
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Open Access Research Articles (Animal Sciences)

Open Access Research Articles (Animal Sciences)

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A high incidence of species substitution and mislabelling detected in meat products sold in South Africa

Cawthorn, Donna-Maree Steinman, Harris A. Hoffman, Louwrens C. (Elsevier, 2013)

Due to their high market value, meat products are often targets for species substitution and adulteration. DNA-based methods are recognized as the most appropriate means to detect such fraudulent practices, however, these ...
Characterization of pigeon paramyxoviruses (Newcastle disease virus) isolated in South Africa from 2001 to 2006

Abolnik, C. Gerdes, G. H. Kitching, J. Swanepoel, S. Romito, M. Bisshchop, S. P. R (AOSIS OpenJournals, 2008)

Pigeon paramyxovirus type 1 (PPMV-1), a variant of Newcastle disease virus that primarily affects doves and pigeons has been isolated in South Africa since the mid-1980s. Phylogenetic evidence indicates that pigeon ...
Live weight and reproduction performance of Zimbabwean blue and South African black ostriches

Cloete, S. W. P. Brand, M. M. Hoffman, L. C. Muller, M. (South African Society for Animal Science, 2008)

Data obtained from a pair-mated ostrich flock located at Oudtshoorn in South Africa were used to derive line differences for live weight and reproduction performance in sexually mature ostriches of the Zimbabwean Blue (ZB) ...
Effects of post mortem temperature on rigor tension, shortening and pH in ostrich muscle

Botha, S. StC. Hoffman, L. C. Britz, T. J. (South African Society for Animal Science, 2008)

ABSTRACT: Fully developed rigor mortis in muscle is characterised by maximum loss of extensibility. The course of post mortem changes in ostrich muscle was studied by following isometric tension, shortening and change in ...
Effect of slaughter age and breed on the carcass traits and meat quality of beef steers finished on natural pastures in the arid subtropics of South Africa

Du Plessis1, I. Hoffman, L. C. (South African Society for Animal Science, 2007)

ABSTRACT: Simmentaler cross (SX), Bonsmara cross (BX) and Nguni (NG) steers were raised on natural sweet veld pastures and slaughtered at 18 or 30 months of age. Slaughtering occurred at the end of the wet summer season. ...
Meat quality attributes of night-cropped Impala (Aepyceros melampus)

Hoffman, L. C. (South African Society for Animal Science, 2000)

ABSTRACT:The aim of this experiment was to determine the effect of using a heavy or a light calibre rifle for night cropping of impala (Aepyceros melampus) on meat quality (pH, colour, cooking and drip loss, tenderness). ...
Carcass and muscle yields of ostriches as influenced by genotype

Hoffman, L. C. Brand, M. M. Muller, M. Cloete, S. W. P. (South African Society for Animal Science, 2007)

ABSTRACT: Live, carcass, leg and muscle weight (kg) as well as dressing percentage were compared between South African Black (Struthio camelus var. domesticus) ostriches, purebred Zimbabwean Blue Neck (Struthio camelus ...
Genetic variation in nodule size at different sites on the skins of slaughter ostriches

Cloete, S. W. P. Van Schalkwyk, S. J. Engelbrecht, A. Hoffman, L. C. (South African Society for Animal Science, 2006)

ABSTRACT: Nodule size is an important indicator of leather quality in the ostrich leather trade. The present study investigated genetic variation in nodule size at five sites on the skin, namely the neck, back, upper leg, ...
Anti-nutritional factors in canola produced in the Western and Southern Cape areas of South Africa

Brand, T. S. Smith, N. Hoffman, L. C. (South African Society for Animal Science, 2007)

ABSTRACT: The development of low erucic acid, low glucosinolate cultivars of canola seed has led to the availability of a feed ingredient with considerable potential to replace soyabean meal in diets for all classes of ...
Influence of reproduction traits and pre-weaning growth rate on herd efficiency of different beef breed types in an arid sub-tropical environment

Du Plessis, I. Hoffman, L. C. Calitz, F. J. (South African Society for Animal Science, 2006)

ABSTRACT: The efficiency of Simmentaler cross (SX), Bonsmara cross (BX), Afrikaner (AF) and Nguni (NG) cowherds to produce weaner calves under natural sweetveld conditions was investigated. The respective cowherds were ...
Effect of hot-deboning on the physical quality characteristics of ostrich meat

Botha, S. St. C. Hoffman, L. C. Britz, T. J. (South African Society for Animal Science, 2006)

The effects of hot-deboning on the physical meat quality characteristics and shelf-life of ostrich m. gastrocnemius, pars interna (gastroc) and m. iliofibularis (iliof) were investigated during 42 days (d) of refrigeration. ...
The effects of dietary energy and protein concentrations on ostrich skin quality

Cloete, S. W. P. Van Schalkwyk, S. J. Brand, T. S. Hoffman, L. C. Nel, C. J. (South African Society for Animal Science, 2006)

ABSTRACT: 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 were 9.0, ...
Evaluation of subjectively assessed nodule traits of ostrich skins as influenced by slaughter age

Van Schalkwyk, S. J. Cloete, S. W. P. Hoffman, L. C. Meyer, A. (South African Society for Animal Science, 2005)

ABSTRACT: Ostrich skins (n = 214) were assessed by 28 participants involved in the ostrich leather production and marketing chain. The participants were from various sectors in the ostrich industry, including producers, ...
Slaughter traits of Merino sheep divergently selected for multiple rearing ability

Cloete, J. J. E. Cloete, S. W. P. Hoffman, L. C. Fourie, J. E. (South African Society for Animal Science, 2004)

ABSTRACT: Carcass data of 114 19-month-old Merino sheep descended from two lines that were divergently selected for maternal multiple rearing ability (H and L lines, respectively) were used. In study A only ram progeny of ...
Relative performance and efficiency of five Merino and Merino-type dam lines in a terminal crossbreeding system with Dormer or Suffolk sires

Cloete, S. W. P. Cloete, J. J. E. Herselman, M. J. Hoffman, L. C. (South African Society for Animal Science, 2004)

ABSTRACT: 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 Mutton Merino ...

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