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Theses and Dissertations (Animal and Wildlife Sciences): Recent submissions
Now showing items 141-160 of 392
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(University of Pretoria, 2018)With increasing raw material costs, feed formulations are becoming more expensive. Formulating a less energy dense diet and adding an emulsifier to improve lipid digestion and absorption is an option to try and decrease ...
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(University of Pretoria, 2017)The objective of this study was to determine the optimal dose of the new generation modified E.coli 6-phytase (modified E.coli) that was developed using gene site saturation mutagenesis, and to compare its efficacy to ...
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(University of Pretoria, 2018)Improving production efficiency and reducing the environmental impact of ruminant production systems would enhance the sustainability and global competitiveness of the livestock sector. Therefore, increasingly more emphasis ...
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(University of Pretoria, 2018)The response of South African Mutton Merino (SAMM) ewes to synchronisation of oestrus and fertility following different protocols and artificial insemination (AI) were studied using data collected during the autumn breeding ...
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(University of Pretoria, 2017)This study investigated cattle off-take decision models for small-holder cattle producers in South Africa. The aim of the study was to provide empirical evidence on off-take decisions and contribute to the formulation of ...
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(University of Pretoria, 2018)Calcium and phosphorus are vitally important macro minerals and are the most abundant minerals found in the broiler, playing a vital role in bone development and mineralisation. Phosphorus also plays an important role in ...
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(University of Pretoria, 2018)Increasing evidence for global warming has amplified the need to accurately verify national greenhouse gas (GHG) inventories, and to validate on-farm GHG mitigation strategies. Agriculture is known to significantly contribute ...
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(University of Pretoria, 2017)Afrikaner, Drakensberger, and Nguni are the South African (SA) landraces that played major roles in the social, cultural and economic history of SA. These breeds are valuable genetic resources for beef production and limited ...
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(University of Pretoria, 2017)This study formed part of a greater departmental research project on methane mitigation strategies in livestock, fed poor quality feeds or kept under extensive grazing conditions. Globally, livestock represents a large ...
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(University of Pretoria, 2017)This study was conducted to investigate three different litter materials, namely pine shavings (PS), bio-secure, fumigated pine shavings (BS) and sunflower hulls (SH) on their physical characteristics and how this influenced ...
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(University of Pretoria, 2018)Please read abstract on the document
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(University of Pretoria, 2017)With a shortage of, and an increase in the price of conventional feedstuff for livestock, combined with the restrictions on the disposal of by-products from industrial plants, this has lead to by-product materials being ...
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(University of Pretoria, 2018)In South Africa, Nguni cattle are one of the breeds found predominantly in extensive production systems. In this study the effect of two feedlot diets with different energy levels have been investigated using a transcriptome ...
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(University of Pretoria, 2018)Beef production is known to be the most important livestock related activity in Namibia (Just over 2 million cattle in Namibia in 2009) with the majority of weaners being exported to the South African feedlot industry. ...
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(University of Pretoria, 2017)objective of the study is to investigate the economic important performance traits of beef cattle bulls in a production environment. Performance data was collected, from 2001 to 2012 on 1318 bulls comprising of four breeds ...
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(University of Pretoria, 2017)Body weight is considered an important trait for the selection of replacement animals in both wool and mutton sheep. Knowledge of the genetic variance of each trait and covariances among traits is essential for effective ...
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(University of Pretoria, 2017)Exogenous fibrolytic enzymes present one way of improving fibre digestibility. Therefore, the aim of this study was to investigate the effect of adding different proportions of cellulase and xylanase enzyme mixtures on ...
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(University of Pretoria, 2017)The Food and Agriculture Organization (FAO) stated that it is vital to intensify animal and feed production in a sustainable manner. Producers are therefore increasing focus on methods to improve production efficiency. ...
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(University of Pretoria, 2017)Shortage of quality feed is the major constraint in livestock production particularly under smallholder subsistence farmer’s conditions in sub-Saharan Africa, including South Africa. This is due to the fact that livestock ...
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(University of Pretoria, 2017)Reproduction potential of farm animals is mainly determined by selection of appropriate strategies that benefit the reproductive performance. The aims of the study were first to evaluate the effect of selenium (Se) ...
Now showing items 141-160 of 392