Browsing Department of Animal Sciences by Title
Now showing items 1-20 of 413
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Die aanwending van die CPM dairy model in formulering van voerrantsoene in 'n melkkudde
(Stellenbosch : Stellenbosch University, 2005-04)ENGLISH ABSTRACT: CPM Dairy was developed to maintain amino acid balance. because the correct amino acid relationship has an influence on milk production and milk composition (Schwab e/ af. 1992, Rulquin e/ af. 1993). ... -
Across flock genetic parameter estimation for yearling body weight and fleece traits in the South African Dohne Merino population
(South African Society for Animal Science, 2008)Accurate genetic parameter estimates are needed upon which to perform multiple-trait across flock breed analyses. Genetic parameters for yearling body weight (BW), clean fleece weight (CFW) and mean fibre diameter (MFD) ... -
Actual and predicted performance of broiler chickens
(Stellenbosch : Stellenbosch University, 2004-03)ENGLISH ABSTRACT: The aim of this study was to evaluate the performance and profitability of different dietary specifications for broiler chickens slaughtered at 35 days of age. Two trials were performed to evaluate ... -
The adaption of the South Africa sheep industry to new trends in animal breeding and genetics : a review
(South African Society for Animal Science, 2014-10-11)The history of sheep breeding research in South Africa can be divided roughly into four eras, namely the research and development phase, the commencement of recording and evaluation, the expansion of recording schemes, ... -
Allometric description of ostrich (Struthio camelus var. domesticus) growth and development
(Stellenbosch : University of Stellenbosch, 2011-03)ENGLISH ABSTRACT: The ostrich industry has overcome many challenges since it originated. However, it is still vulnerable to sudden changes in customer preferences and economic cycles. As feed costs are the greatest expense ... -
Alternatives to replace antibiotics in broiler diets : effects on protein utilization and production performance
(Stellenbosch : Stellenbosch University, 2008-12)ENGLISH ABSTRACT: Different substances were evaluated and compared to an antibiotic, in terms of their effect on nitrogen - and amino acid digestibilities. Two digestibility trials and one performance trial were ... -
Amino acid requirements of feedlot cattle according to the duodenal and whole empty body essential amino acid profile
(Stellenbosch : Stellenbosch University, 2001-12)ENGLISH ABSTRACT: The purpose of this study was to determine the essential amino acid requirements of beef cattle under feedlot conditions through evaluation of the duodenal and whole empty body essential amino acid ... -
Amino acid requirements of South African Mutton Merino lambs 3. Duodenal and whole empty body essential amino acid profile
(South African Society for Animal Science, 1999)The duodenal and whole empty body essential amino acid (EAA) profile of South African Mutton Merino lambs fed a standard growth diet was investigated. The data of 20 lambs were used. With the exception of phenylalanine, ... -
Analysis of carcass characteristics and fat deposition of Merino, South African Mutton Merino and Dorper lambs housed in a feedlot
(South African Society for Animal Science, 2018-02-15)The objective of this study was to determine the effect of time spent in a feedlot on the size of the various fat depots and the distribution of the main tissues (muscle, bone, and fat) of three common South African sheep ... -
Animal performance from natural pastures and the effects of phosphorus supplementation
(Stellenbosch : Stellenbosch University, 1984-03)INTRODUCTION: This study was initiated by the various reports of improved animal performance resulting from supplementary feeding of grazing ruminants and in this respect, it may be regarded as a feasibility study of ... -
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), ... -
Anti-nutritional factors in canola produced in the Western and Southern Cape areas of South Africa
(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 ... -
Application of dietary bentonite clay as feed addictive on feed quality, water quality and production performance of African catfish (Clarias gariepinus)
(Stellenbosch : Stellenbosch University, 2016-03)ENGLISH ABSTRACT: Aquaculture remains the fastest growing animal food producing sector and is gradually overtaking capture fisheries as a source of food fish. The challenges of poor feed quality, feed utilisation and water ... -
Application of exogenous enzymes in Haliotis midae diets with soybean meal as fish meal replacement
(Stellenbosch : Stellenbosch University, 2012-03)ENGLISH ABSTRACT: A 240-day growth study was conducted to determine the suitability of soybean meal (SBM) as an alternative protein source to fish meal (FM) in the diet of commercially produced South African abalone ... -
Application of immunocastration in a commercial Dohne Merino ram flock before weaning
(South African Society for Animal Science, 2019-01-03)The influence of pre-weaning immunocastration on the growth, incidences of reaction to vaccination, serum testosterone concentration and slaughter performance of ram lambs was determined and compared to that of physically ... -
Application of the condition factor in the production of African sharptooth catfish Clarias gariepinus
(Stellenbosch : University of Stellenbosch, 2005-03)In recent years there has been a renewed interest in the commercial culture of African Sharptooth Catfish. Its robust characteristics and its air breathing capabilities makes the African catfish a good candidate for ... -
Aquaculture practices in irrigation reservoirs of the Western Cape Province of South Africa in relation to multiple resource use and socio-ecological interaction
(Stellenbosch : Stellenbosch University, 2014-04)ENGLISH ABSTRACT: Aquaculture has proven to be a viable operation in multi-used irrigation reservoirs (also referred to as farm dams) in the Western Cape province (WCP) of South Africa. Many studies found that the ... -
The assessment of black soldier fly (Hermetia illucens) pre-pupae, grown on human faecal waste, as a protein source in broiler and layer diets
(Stellenbosch : Stellenbosch University, 2017-03)ENGLISH ABSTRACT: The aim of this study was to investigate the effect of processing of black soldier fly (Hermetia illucens) pre-pupae meal (BSF), grown on human waste, as a protein source in broiler and layer hen diets ... -
An assessment of the contributions of Afrikaner, Hereford and Simmentaler in composite breed development in beef cattle
(Stellenbosch : Stellenbosch University, 2000-12)ENGLISH ABSTRACT: The objective of this study was to obtain more information regarding the characterisation of Afrikaner (A), Hereford (H) and Simmentaler (S) breeds in an initial crossbreeding programme and subsequent ... -
Beef production, quality and fatty acid composition of non-descript crossbreed steers fed natural pasture-based diets
(Stellenbosch : Stellenbosch University, 2018-12)ENGLISH ABSTRACT: The broad objective of the current study was to assess beef production and quality of steers fed diets formulated using locally available feed resources in communal areas of Eastern Cape Province, South ...
