Browsing Animal, Wildlife and Grassland Sciences by Issue Date
Now showing items 21-40 of 97
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Food-related determinants of Kudu carrying capacity in a semi-arid savanna
(University of the Free State, 2001-11)English: A comparative study was conducted in order to investigate the relationship between forage availability and parameters of kudu populations thought to have a bearing on kudu carrying capacity in a semi-arid savanna. ... -
The effect of season and nutrition on the reproductive potential and sexual characteristics of Boer goat bucks
(University of the Free State, 2001-12)English: A study to evaluate the effect of season (ambient temperature, daylight length and relative humidity) and nutrition on the reproductive potential and sexual characteristics of young Boer goat bucks was carried ... -
The genetic basis of gestation length in Bonsmara cattle
(University of the Free State, 2002-11)English: The purpose of this study was to investigate the genetic and phenotypic parameters for gestation length and birth weight in Bonsmara cattle in South Africa. The genetic and phenotypic parameters were determined ... -
Intake and digestibility studies with captive African lions (Panthera leo), leopards (Panthera pardus) and cheetahs ( Acinonyx jubatus)
(University of the Free State, 2002-11)English: The long-term goal of this study of the quantitative nutrition of large African predators was to develop non-invasive techniques for the accurate determination of food intake and apparent nutrient digestibility ... -
Crude protein and mineral status of forages grown on Pellic Vertisol of Ginchi, Central Highlands of Ethiopia
(University of the Free State, 2002-11)The study was conducted at Ginchi, which is situated in the western Shoa zone of the central Ethiopian highlands. The main aim of the study was to assess the crude protein (CP) and mineral status of feeds produced in the ... -
Studies on the behavioural and genetic aspects of ewe rearing ability and lamb survival in South African sheep flocks
(University of the Free State, 2002-11)English: The dissertation is based on a number of separate trials conducted since 1989. The central theme is ewe rearing ability and lamb survival, and the study includes 15 papers prepared over an 11-year period from ... -
Genetic parameter estimation of production and reproduction traits of the Elsenburg Dormer stud
(University of the Free State, 2002-11)English: Genetic parameter estimates were compared usmg Gibbs sampling and REML methods. Variance components and resulting heritabilities of birth weight (BW) and weaning weight (WW) in the Elsenburg Dormer sheep stud ... -
The effect of different milk pricing schemes on a selection index for South African Holstein cattle
(University of the Free State, 2002-11)English: A total of 150673 first lactation records of South African Holstein lactating cows were used to estimate the genetic parameters of milk (MY), butterfat (BFY), and protein (PRY) yields, and butterfat (BFP) and ... -
Genetic evaluation of production, reproduction and survival in a flock of Ethiopian Horro sheep
(University of the Free State, 2002-11)English: Genetic analyses of economically important traits were carried out using data collected for 20 years (1978-1997) from a flock of Horro sheep at Bako Research Center, Ethiopia. (Co)variance components and genetic ... -
Genetic factors affecting milk production, growth and reproduction traits in Bos indicus x Bos taurus crosses in Ethiopia
(University of the Free State, 2002-11)English: Five separate studies were conducted to investigate the genetic factors affecting growth, milk production and reproduction traits in Bos indicus x Bos taurus crosses in Ethiopia. The first three studies were ... -
Rangeland evaluation in relation to pastoralists perceptions in the middle Awash valley of Ethiopia
(University of the Free State, 2003-01)Pastoralism is the most dominant land use form in the arid rangelands of Sub- Saharan Africa in which Ethiopia is not an exception. However, in Ethiopia and elsewhere, rangeland-based life-styles are in difficulty with ... -
Rangeland evaluation and perceptions of the pastoralists in the Borana zone of southern Ethiopia
(University of the Free State, 2003-03)The study was conducted in the Borana rangeland of southern Ethiopia. In the last few decades the Borana rangelands have been degraded while the pastoralists adhered to the traditional grazing strategies. The main aims ... -
FarmRec: 'n geïntegreerde ekstensiewe veeboerdery rekordhoudingstelsel
(University of the Free State, 2003-04)English: Extensive farmers in South Africa do not generally keep records of their farming activities, and if they do, it only entails financial record keeping for the Receiver of Revenue. Resources for farm record keeping, ... -
Root dynamics and water studies on Opuntia ficus-indica and O.robusta
(University of the Free State, 2003-11)English: Over the last few years a great interest in cactus pear was shown in terms of both fresh fruit and fodder production. However, there is a lack of knowledge on roots and therefore this study aimed at determining ... -
Production evaluation of Opuntia robusta and O.ficus-indica cultivars in the central Free State
(University of the Free State, 2003-11)English: The search for appropriate plant species able to produce with sustainably in arid and semi-arid areas, has been a concern for some farmers living in such harsh environments. Unfortunately there is a lack of ... -
The influence of bedding material and collecting period on the feeding value of broiler and layer litter
(University of the Free State, 2004)Guidelines for poultry production enterprises to increase the efficiency of broiler production and optimize the nutritional value of poultry litter and manure for use in ruminant nutrition is urgently needed. Therefore a ... -
Sperm cryopreservation, in vitro fertilization and faecal oestrogen enzyme immunoassay validation in the African lion (Panthera leo)
(University of the Free State, 2004-05)English: Eight captive male African lions aged 1 to 4 years (Panthera leo) from Bothaville district (n=6) and Johannesburg Zoo (n=2), as well as 1 lioness from the Bloemfontein Zoo were used during this study. The 8 male ... -
The development of economic selection indices for the Simmentaler breeds in South Africa
(University of the Free State, 2004-11)English: The purpose of the first chapter was to give a short introduction to the study. Although there were exponential increases in knowledge, there are still fields of study where there is little understanding and ... -
The phenotypic characterization of native Lesotho chickens
(University of the Free State, 2004-11)English: Studies were made on growth, carcass and egg performance as well as mortality of the Lesotho native chickens compared to the South African native (Potchefstroom Koekoek, Ovambo, Lebowa-Venda and Naked Neck) and ... -
A plant ecological study of the Rietvlei Nature Reserve, Gauteng Province
(University of the Free State, 2004-11)English: This study was undertaken with the objective to identify and quantify different homogeneous management units on the Rietvlei Nature Reserve to facilitate more effective management as far as grazing utilization, ...