Browsing Masters Degrees (Animal and Poultry Science) by Title
Now showing items 3-22 of 112
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Biological and economic response of laying hens to dietary lysine and energy contents during peak and late production periods.
(2001)The effect of dietary energy and amino acid contents during the peak of production of laying hens has been well investigated, but little is known about the late production period. In most of the previous studies the focus ... -
The biological and economic responses of growing pigs to nutrient density.
(1999)No abstract available. -
Biological control of the common house fly Musca domestica L. in horse stables, using Bacillus thuringiensis serovar israelensis and Beauveria bassiana.
(2013)House flies (Musca domestica L.) are common pests affecting horses and their owners. Control of house flies in stable yards is currently based on the use of pesticides. However, the development of resistance by these flies ... -
Breast meat yield in broilers affected by lighting and dietary energy levels in starter and finisher phases.
(2015)The increased demand in poultry products has prompted researchers to investigate opportunities and methods which may streamline the production of valuable commodities. Two experiments were conducted in this study. Both ... -
Breed susceptibility to enterotoxigenic and enteroaggragative Escherichia coli strains in South African pigs.
(2013)Escherichia coli diarrhoea is the most important source of mortality in piglets. The most frequently isolated strain in enterotoxigenic E. coli diarrhoea is F4ab/ac. Recent studies in South Africa reported non-fimbrial ... -
The calcium requirement of commercial layer pullets in the pre-laying period.
(2003)Specifications for the amount of calcium to be included in feeds for pullets and laying hens vary considerably in the scientific literature. Much of this variation is due to the fact that genetic selection has changed ... -
Capacitation of Nguni semen for in vitro fertilization of bovine oocytes.
(1995)In vitro maturation, fertilization and culture is a technique which is increasingly utilised in the animal science industry for embryo production. However, optimal conditions for in vitro maturation, fertilization and ... -
Characterisation of determinants of predation of goats in communal production systems.
(2016)Predation is challenge in communal goat production systems. The broad objective of the study was to explore determinants of goat predation in communal production systems. A survey was conducted in 195 households in flat ... -
Choice feeding as a method of meeting the changing protein requirements of broilers during their growing period.
(2005)Broiler production is an important animal production enterprise with potential to make high returns. Increasing feed efficiency and early body weight gain has always been a top priority in the broiler industry. The general ... -
The constraining effect of feed bulk on the voluntary feed intake of laying hens.
(2004)1. Two experiments were designed to determine a suitable method of measuring and predicting feed bulk, such that this could be used to predict when the feed intake of a laying hen would be constrained by feed bulk. 2. ... -
Constraints on smallholder dairying in Swaziland : Manzini Region & surrounding areas.
(2005)Summary: Swaziland has long had a disparity between the supply and demand of milk. Even at present milk production continues to be less than the market demand. The quantitative contribution of smallholder dairy farmers ... -
Contribution of village chickens to the resource-poor households.
(2014)Village chickens are reared by almost every rural household in low-income, food-deficit regions of the world, but their contribution to food security at both, household and national levels is not well understood. The study ... -
Dairy constraint analysis in Eritrea, with special emphasis on Asmara and surrounding dairy farms.
(2003)The overall objective of the study reported in this thesis was to assess the existing situation of the dairy sub-sector in Eritrea with special emphasis on the Asmara and surrounding dairy farms. The specific objective ... -
Degradation parameters and modelling of degradation rate in the rumen of cattle fed non-supplemented roughages.
(2015)Feeding of animal has become increasingly a big challenge in livestock production systems as it is the most costly input. Ruminants are very important to mankind because they can convert fibre-rich vegetation into high ... -
Developing an energy evaluation protocol for horse feeds in South Africa.
(2004)The purpose of this study was to find the most accurate and reliable method available in South Africa to evaluate equine diets on an energy basis. Currently South African horse owners purchase food according to the crude ... -
Development of a protocol for the molecular serotyping of the African horse sickness virus.
(2009)African horse sickness (AHS) is a viral disease with high mortality rates, vectored by the Culicoides midge and affecting members of the Equidae family. AHS is endemic to South Africa, and, as a result, affects export and ... -
Diet selection and foraging efficiency of Nguni goats in the bushveld of Gauteng, South Africa.
(2012)Diet selection and foraging efficiency are primary driving behavioural processes in mammalian herbivore plant interaction. They determine the quality of production and also impact on vegetation, necessitating managerial ... -
The digestibility, intake and faecal marker patterns of Hereford and Friesland bulls consuming kikuyu (Pennisetum clandestinum) using N- alkanes.
(2000)Kikuyu is an important summer pasture species in South Africa for animal production, and is seemly suitable for growing out dairy replacement heifers. Previous research by Horne (1996) and Fushai (1997) showed that Friesland ... -
Distribution, phenotype and factors influencing the production potential of Nguni sheep.
(2018)The Nguni sheep of South Africa is an indigenous breed that is adapted to its environment. Migrating from Central Africa down the sweltering east coast of Africa down to Southern Africa, the sheep were exposed to different ... -
Effect of alternatives to antibiotic growth promoters on broiler performance.
(2006)No abstract available.