Animal, Wildlife and Grassland Sciences
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Breed effects and non additive genetic variation in indigenous and commercial sheep in an extensive environment
(University of the Free State, 2019-06)The first part of the study compared a commercial, the Dorper as an arguably adapted commercial breed to the Namaqua Afrikaner as an unselected, indigenous, far-tail breed. The Dorper conclusively outperformed the Namaqua ... -
Mitochondrial sequences reveal a clear separation between Angolan and South African giraffe along a cryptic rift valley
(BioMed Central, 2014)Background: The current taxonomy of the African giraffe (Giraffa camelopardalis) is primarily based on pelage pattern and geographic distribution, and nine subspecies are currently recognized. Although genetic studies ... -
Relationship of corticoid, thyroid and metabolic profiles with fertility of beef females on sourveld and mixed sweetveld
(University of the Free State, 2000-09)English: During the 1981/82 season, first-calf Bonsmara cows on the sourveld (lower plane of natural pasture) supplemented with an NPN lick in winter (sourveld +N), and sourveld not supplemented with an NPN lick in winter ... -
Genetic improvement of beef cattle in a tropical environment with special reference to the Gudali and Wakwa breeds in Cameroon
(University of the Free State, 1999-11)English:In an attempt to genetically Improve Gudali beef cattle JO Cameroon, two selection experiments were conducted between 1968 and 1988 at the Animal Production and Research Stations of Wakwa, Ngaoundere. The one ... -
In vitro embryo production in cattle
(University of the Free State, 2007-08)English: The objective of this study was the development of efficient in vitro embryo production (IVEP) technology for application on fertility-impaired beef and dairy cows. Fertility-impaired implying animals that could ... -
Effect of different cryodiluents on Nguni bull semen viability and in vitro fertilizing capacity
(University of the Free State, 2010-11)This study was aimed at evaluating the effects of different extenders and cryoprotectants on the quality of Nguni bull semen after cryopreservation, and to evaluate the performance of frozen-thawed Nguni bull semen in ... -
The utilization by domestic ruminants in Botswana of treatment diets containing cereal crop stovers treated with urea or urea and molasses
(University of the Free State, 2007-03)English: The studies were aimed at examining the effects of treatment with urea or urea and molasses on the physical and chemical composition of stovers of sorghum, maize and millet and assessing the potential of these ... -
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 ... -
The influence of feeding various roughage: concentrate ratios on milk production of Friesland cows
(University of the Free State, 1974-12)1. In a single-lactation 240-day continuous trail, 64 lactating dairy animals were used to study input-output response to complete rations. Nine first-calf heifers and seven cows were allotted by the procedure of balancing ... -
Effect of dietary lipid saturation on layer production and egg quality
(University of the Free State, 2012-07)English: A study was conducted to investigate the effects of dietary lipid saturation on nutrient digestibility, egg production and egg quality characteristics of laying hens during peak production (≤ 42 weeks of age). ... -
The influence of body mass on production characteristics of broiler breeders
(University of the Free State, 2006-05)English: A study was conducted to investigate the effect of variation in body weight (BW) of broiler breeder hens at onset of lay (23 weeks of age) on subsequent egg production parameters and eggshell quality (27 to 60 ... -
Characterization and cryopreservation of South African unimproved indigenous goat semen
(University of the Free State, 2010-05)Semen from 7 South African unimproved indigenous bucks that were successfully trained from a group of 10 bucks for semen collection with the aid of an artificial vagina (AV) was characterized and then cryopreserved, using ... -
Factors affecting productive life and fertility in Nguni cows
(University of the Free State, 2017-07)English: The objective of the study was to assess factors that affect productive herd life and fertility in the Nguni cows using different models. The data set was obtained through the SA Stud book Logix information system. ... -
Feedlot performance of Dorper lambs on Opunti: based diets with different nitrogen sources
(University of the Free State, 2009-11)Three feedlot diets were evaluated with Dorper wether lambs at Bergvlug Experimental Farm, Khomas Region, Namibia. Bergvlug is located about 35 km east of Windhoek. The three treatment diets consisted of a conventional ... -
Physical form of maize grain in finishing rations of ram lambs
(University of the Free State, 2008-05)English: The effect of whole (WMG), ground (GMG) and fine (FMG) maize grain in finishing rations for lambs containing 20 and 40% lucerne hay respectively was investigated. Thirty 3-month-old SA Mutton Merino lambs were ... -
Feeding ecology of the greater Kudu (Tragelaphus strepsiceros) in the central Free State
(University of the Free State, 2017-02)The objective on most wildlife ranches is to accommodate a diversity of wildlife species to satisfy the need for ecotourism, hunting and live sales. However, the small size of many wildlife ranches presents its own unique ... -
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, ... -
The effect of NDF content in finishing diets on performance and meat quality of lambs
(University of the Free State, 2016-02)English: A study was conducted to investigate the effect of incrementally increasing NDF levels of finishing diets on apparent digestibility, production performance, FA composition, oxidative stability and tenderness of ... -
Quantification of bull sperm traits as measured by CASA and the relationship to pregnancy rate following controlled breeding
(University of the Free State, 2017-05)The biological importance of a bull’s contribution through artificial insemination to reproductive efficiency is of great importance because the sperm represents half of the genetic composition of its progeny. Therefore, ... -
Die effek van die vervanging van vismeel met alternatiewe proteïenbronne in diëte van baber (Clarias gariepinus) litlinge
(University of the Free State, 2008-05)Afrikaans: Intensiewe visproduksie benodig voere met 'n hoë proteïeninhoud (Hecht, Uys & Britz, 1988). Voer is gewoonlik die grootste veranderlike koste-item in kommersiële produksie en daarom word die winsgewendheid van ...
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