Department of Animal Sciences
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The use of a scoring card system to assess the suitability of underground and surface water for the farming of warm water fish species in five districts in Limpopo Province
(Stellenbosch : Stellenbosch University, 2019-04)ENGLISH ABSTRACT: The development of aquaculture to meet the local and global market demand for fish as an affordable protein source, has created the need for the screening of alternative water sources (i.e. underground ... -
Modulation of starch digestion for productive performance in dairy cows
(Stellenbosch : Stellenbosch University, 2019-04)ENGLISH ABSTRACT: In this thesis, a series of experiments were conducted to ultimately investigate the effects of modulating site of starch digestion by varying ruminal fermentability of various starch sources on feed ... -
Development of a cost-effective system for ovoviviparous production of Artemia nauplii at low-salinity as live food for the larvae of the African catfish (Clarias gariepinus: Burchell, 1822)
(Stellenbosch : Stellenbosch University, 2019-04)ENGLISH ABSTRACT: The brine shrimp Artemiais a small crustacean used as live food in fish and shell fish culture. Among other live food types which are commonly used in aquaculture, Artemia is widely known and accepted ... -
Integration of information and communication technology (ICT) in the development of a recordkeeping database of smallholder sheep farming systems in the Western Cape Province of South Africa
(Stellenbosch : Stellenbosch University, 2019-04)ENGLISH ABSTRACT: The use of smartphone technology generates new opportunities for better farm and livestock management. The constant use of traditional systems by smallholder livestock farmers for recordkeeping in developing ... -
The effects of xylanase and arabinoxylan-oligosaccharides on the growth performance, non-specific immunity, hindgut microbial diversity and hindgut short-chain fatty acid production of African catfish, Clarias gariepinus
(Stellenbosch : Stellenbosch University, 2019-04)ENGLISH ABSTRACT: Aquaculture is one of the fastest growing food-producing industries in the world, however, this industry is still highly dependent and relies more on the production of fishmeal and fish oil resources from ... -
The effect of Nutrifen® and Nutrifen Plus® in the diet of Hy-Line layers on production, egg quality and egg shelf life
(Stellenbosch : Stellenbosch University, 2019-04)ENGLISH ABSTRACT: The use of natural feed additives for animal production has become an increasing topic of interest due to the ban of antibiotics in some countries and the shift towards more sustainable and ethical ... -
Studies on the genetics of ovine behaviour in a Western Cape resource flock aimed at improving animal welfare
(Stellenbosch : Stellenbosch University, 2019-04)ENGLISH ABSTRACT: Data were collected on a Merino resource flock on the behaviour of ewes and lambs from 1993 to 2002. This flock was divergently selected from the same base population since 1986 for the number of lambs ... -
Genetics of ovine resistance to gastrointestinal nematodes
(Stellenbosch : Stellenbosch University, 2019-04)ENGLISH ABSTRACT: This study consists of various papers on the genetic evaluation of sheep for resistance to gastrointestinal nematodes in South Africa using faecal worm egg count (FWEC) as a proxy. Outcomes from the study ... -
Determining production characteristics of dusky kob, Argyrosomus japonicus, grown in sea cages under commercial conditions in Richards Bay, South Africa
(Stellenbosch : Stellenbosch University, 2019-04)ENGLISH ABSTRACT: With aquaculture in South Africa being in its infancy there are many questions regarding the production characteristics of potential candidate aquaculture species, one such species being the dusky kob ... -
Partial substitution of maize with soybean hulls in a concentrate supplement for grazing dairy cows
(Stellenbosch : Stellenbosch University, 2019-04)ENGLISH ABSTRACT: Climate in the southern Cape region of South Africa permits dairy farmers to make use of cultivated pasture as their main nutrient and feed source for dairy cows. A commonly used pasture system in this ... -
Ante- and post-mortem factors influencing impala (Aepyceros melampus) meat quality
(Stellenbosch : Stellenbosch University, 2019-04)ENGLISH ABSTRACT: The aim of this research was to investigate the influence of sex, muscle (Longissimus thoracis et lumborum/LTL, biceps femoris/BF, semimembranosus/SM, semitendinosus/ST, infraspinatus/IS, and supraspinatus/SS), ... -
The residue kinetics and safety of R-salbutamol in ruminants
(Stellenbosch : Stellenbosch University, 2019-04)ENGLISH ABSTRACT: With an increased demand to supply food to an ever-increasing world population the application of new technologies to improve animal production efficiency has become a global priority. A balance must be ... -
The effect of age on the carcass composition, portion yield and proximate composition of two rabbit genetic types in South Africa
(Universidad Politécnica de Valencia, 2017)This study investigated the carcass component yields and meat proximate composition of 2 rabbit genetic types (Californian and hybrid New Zealand Red×Californian), with 5 rabbits per genetic type being slaughtered every 2 ... -
Proximate and fatty acid composition of cooked South African Cape snoek (Thyrsites atun)
(Academy of Science of South Africa, 2017)Cape snoek (Thyrsites atun) is an important source of protein for people in South Africa; however, nutritional information thereof is limited. The proximate and fatty acid compositions of raw and cooked (80 °C) snoek muscles ... -
Replacing maize grain with dried citrus pulp in a concentrate feed for Jersey cows grazing ryegrass pasture
(South African Society for Animal Science, 2017-07-06)Dried citrus pulp (DCP) is a high-fibre by-product of the citrus industry. In total mixed ration (TMR) systems it has been shown to maintain a more stable ruminal environment, improving overall production compared with ... -
Preliminary genome-wide association study for wet-dry phenotype in smallholder ovine populations in South Africa
(South African Society for Animal Science, 2017-04-10)The aim of this study was to identify single nucleotide polymorphisms (SNPs) associated with genomic region underlying variation in the binomial reproductive trait ‘wet-dry’ in sheep. The wet-dry phenotype was used to ... -
Effect of days in feedlot on growth performance and carcass characteristics of Merino, South African Mutton Merino and Dorper lambs
(South African Society for Animal Science, 2016-12-08)This study investigated the effect of feedlot production on lamb growth characteristics of three common South African breeds: Merino, South African Mutton Merino (SAMM) and Dorper. Lambs were supplied with a balanced diet ... -
Dead-in-shell positions of near-term ostrich embryos
(South African Society for Animal Science, 2016-12-06)The patterns of embryonic development in ostriches, especially in the last stage of hatching, are still not well understood. This study examined between 3468 and 3484 dead-in-shell (DIS) eggs with chicks that died between ... -
Towards a regional beef carcass classification system for Southern Africa
(South African Society for Animal Science, 2017-05-15)Southern Africa is home to over 64 million cattle, of which 75% are raised on natural pasture in smallholder farming areas. Indigenous cattle breeds Bos indicus (zebu), B. taurus africanus (Sanga type) and their crosses ... -
Castration of male livestock and the potential of immunocastration to improve animal welfare and production traits : invited review
(South African Society for Animal Science, 2017-09-15)Growing consumer awareness about animal welfare has led to the assessment of the impact of common farming practices, such as physical castration, on animal well-being under production conditions. Physical castration is ...
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