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Theses and Dissertations (Animal and Wildlife Sciences): Recent submissions
Now showing items 121-140 of 392
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(University of Pretoria, 2018)This study investigated the effects of organic and inorganic Zinc (Zn) supplementation on heat stressed, male Ross broilers. Birds were randomly assigned to 12 treatment groups, consisting of 8 replications each. Each ...
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(University of Pretoria, 2019)Methane emission in ruminant production is not only a global greenhouse gas, but also a loss of feed energy. Therefore, there is huge interest in identifying mitigation strategies that reduce ruminant derived methane, which ...
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(University of Pretoria, 2018)The purpose of this study was to identify genomic regions associated with carcass traits using real-time ultrasound measurements in South African Nguni cattle. The dataset contained measurements from 200 Nguni steers ...
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(University of Pretoria, 2018)This study was based on measurements taken from the milk recording scheme of the Agricultural research Council (ARC). In this study the effects of milk urea nitrogen (MUN) on reproduction parameters of dairy cows in South ...
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(University of Pretoria, 2018)Ruminants can utilize forage fibre material due to an unique adaptation of the stomach that is called the selective retention mechanism. The fibre cell wall is composed mostly of cellulose, hemicellulose and lignin. The ...
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(University of Pretoria, 2018)In this study both microsatellite and SNP data was evaluated, with the aim to quantify genetic variation, inbreeding and population structure at a genomic level to provide reference data for the South African (SA) Hereford ...
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(University of Pretoria, 2019)Exogenous feed enzymes can limit the negative effect of anti-nutrients such as non-starch polysaccharides present in maize and soybean meal based broiler diets, and thereby increase the digestibility and nutritive value ...
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(University of Pretoria, 2019)The exploitation of crocodilians in the 1950s-1970s resulted in their being listed under the CITES protection appendices. Farming of crocodilians began in South Africa in the 1970s, and has since become an international ...
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(University of Pretoria, 2019)For years indigenous cattle breeds in communal areas have been and still are managed in adverse production environments. As a result, their growth and reproduction efficiency have been affected. Poor management, high ...
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(University of Pretoria, 2018)In this project the impact of Bacillus probiotics on the production performance and microbial gut diversity in weaner pigs were investigated. Two production units were used, namely individual housing units and group housing ...
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(University of Pretoria, 2019)In rural communities of the Vhembe District, South Africa, poultry production is based on traditional scavenging systems at household level and chickens are kept for religious, cultural considerations, supply of negligible ...
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(University of Pretoria, 2018)The aim of this study was to investigate the effects of muscle energy metabolism and calpain proteolytic system on meat colour and tenderness in different Southern African ecotypes. A total of sixty-five (65) goats ...
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(University of Pretoria, 2018)The aim of this study was to characterize indigenous Tswana goats in four agro-ecological regions of Botswana i.e. Southern, Central, Northwest and Ghanzi. The following specific objectives were set; description of ...
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(University of Pretoria, 2019)Nguni cattle are known for their qualities of adaptability to harsh environmental conditions. Research has shown that this breed of Bos taurus africanus has evolved over the years and in the process developed resistance ...
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(University of Pretoria, 2019)Visual measurements of colour are the ideal standards for the determination of meat quality at the point of sale. Thus far, consumers rely on colour alone to make a purchase decision. The use of visual surface structures ...
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(University of Pretoria, 1986)Afrikaans: 'n Dagsoomkaart <skaal 1:100 000) en 'n struktuurkaart <skaal ongeveer 1:225 OQO> van die geologie van die Maricodistrik, is saamgestel. 'n Verskeidenheid van afsettings- gesteentes van die Transvaal Opeenvolging ...
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(University of Pretoria, 2019-02)Visual measurements of colour are the ideal standards for the determination of meat quality at the point of sale. Thus far, consumers rely on colour alone to make a purchase decision. The use of visual surface structures ...
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(University of Pretoria, 2018)This study analysed pig carcass records from a commercial abattoir to determine the existence of variance between/within the parameters, warm carcass mass (WCM) and back fat thickness (Fat), of the South African pig carcass ...
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(University of Pretoria, 2017)Ticks are important ectoparasites and vectors of human and animal diseases in many countries including South Africa (Matayo, 2001). In Matabeleland, south province, some recent work has been done by VEDMA consulting group ...
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(University of Pretoria, 2018)Gastrointestinal parasitism is a major problem to livestock productivity worldwide and small ruminant production is affected the most. Resistance of gastrointestinal nematodes (GIN) to anthelmintics is a widespread ...
Now showing items 121-140 of 392