• Methanogenic potential of commonly utilised South African subtropical and temperate grass species as influenced by nitrogen fertilisation 

  Du Toit, C.J.L. (Cornelius); Van Niekerk, W.A.; Meissner, Heinz H.; Erasmus, L.J. (Lourens Jacobus); Morey, Liesl (CSIRO, 2019)

  The aim of the study was to evaluate the effect of nitrogen (N) fertilisation on certain quality parameters and in vitro total gas and methane production of improved grass species commonly used as fodder species in South ...
• Preparation of acacia tannin loaded lipid microparticles by solid-in-oil-in-water and melt dispersion methods, their characterization and evaluation of their effect on ruminal gas production In Vitro 

  Adejoro, F.A. (Festus Adeyemi); Hassen, Abubeker; Thantsha, Mapitsi Silvester (Public Library of Science, 2018-10-25)

  Tannin extracts have wide biological activity in ruminant nutrition. The possibility of masking their bitter taste and enhancing sustained release in the rumen can be achieved through encapsulation. The objectives of ...
• Growth performance and digestive tract development of indigenous scavenging chickens under village management 

  Raphulu, Thomas; Jansen van Rensburg, Christine (Kassel University Press, 2018-06-27)

  The study was conducted on indigenous scavenging chickens under village management firstly, to evaluate the early development of the digestive tract to 28 days of age and secondly, to determine the growth performance of ...
• Dietary protein and energy requirements of Venda village chickens 

  Raphulu, Thomas; Jansen van Rensburg, Christine (Kassel University Press, 2018-06-27)

  The objective of this study was to determine the dietary protein and apparent metabolisable energy (AME) requirements of local chickens. Freshly laid eggs of scavenging chickens collected in rural villages were hatched ...
• The use of exogenous enzymes and essential oils to enhance ruminal feed degradation and reduce methane production in vitro 

  Nel, Tertio Christo (University of Pretoria, 2018)

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• Response to different oestrous synchronisation protocols and fertility of ewes following artificial insemination 

  Nakafeero, Angella (University of Pretoria, 2018)

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• A re-evaluation of calcium and phosphorous requirements for optimal performance and bone integrity of the Ross 308 broiler 

  Linde, Deeva (University of Pretoria, 2018)

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• Estimation of genetic parameters and comparison of breeding values for body weight with different models in a South African Merino stud 

  Nemutandani, Khetho Ratshilumela; Snyman, Margaretha A.; Olivier, W.J.; Visser, Carina (Elsevier, 2018-12)

  Data collected on body weight from birth to 5 years of age in the Grootfontein Merino stud from 1968 to 2012 were analysed with univariate, multivariate and repeatability animal models. The estimated breeding values (EBVs) ...
• Variability of satellite derived phenological parameters across maize producing areas of South Africa 

  Adisa, O.M. (Omolola); Botai, J.O. (Joel Ongego); Hassen, Abubeker; Darkey, Daniel; Adeola, Abiodun M.; Tesfamariam, Eyob Habte; Botai, Christina M.; Adisa, Abidemi T. (MDPI Publishing, 2018-08-27)

  Changes in phenology can be used as a proxy to elucidate the short and long term trends in climate change and variability. Such phenological changes are driven by weather and climate as well as environmental and ecological ...
• Genetic improvement in South African livestock : can genomics bridge the gap between the developed and developing sectors? 

  Van Marle-Koster, Este; Visser, Carina (Frontiers Media, 2018-08-23)

  South Africa (SA) holds a unique position on the African continent with a rich diversity in terms of available livestock resources, vegetation, climatic regions and cultures. The livestock sector has been characterized by ...
• Effects of non-steroidal growth implant and dietary zilpaterol hydrochloride on growth and carcass characteristics of feedlot lambs 

  Webb, E.C. (Edward Cottington); Allen, J.; Morris, S.D. (South African Society for Animal Science, 2018-04-03)

  The effects of steroidal growth implants alone or in combination with β-adrenergic agonist feed additives have not been studied thoroughly in mutton sheep in South African feedlot conditions. This study investigated the ...
• Production responses of high producing Holstein cows to ruminally protected phenylalanine and tyrosine supplemented to diets containing high levels of canola meal 

  Swanepoel, Nadia; Robinson, P.H.; Erasmus, L.J. (Lourens Jacobus) (Elsevier, 2018-09)

  Phenylalanine (Phe) was first identified as a potentially limiting amino acid (AA) in lactating dairy cows in 1974. There is the possibility that conversion of Phe to tyrosine (Tyr) is not efficient enough to supply all ...
• Modelled impacts of extreme heat and drought on maize yield in South Africa 

  Mangani, Robert; Tesfamariam, Eyob Habte; Bellocchi, Gianni; Hassen, Abubeker (CSIRO, 2018-07)

  This study assessed two versions of the crop model CropSyst (i.e. EMS, existing; MMS, modified) for their ability to simulate maize (Zea mays L.) yield in South Africa. MMS algorithms explicitly account for the impact of ...
• Changes in African elephant (Loxodonta africana) faecal steroid concentrations post-defaecation 

  Webber, Judith T.; Henley, Michelle D.; Pretorius, Yolanda; Somers, Michael J.; Ganswindt, Andre (AOSIS Open Journals, 2018-06-12)

  BACKGROUND : Faecal hormone metabolite measurement is a widely used tool for monitoring reproductive function and response to stressors in wildlife. Despite many advantages of this technique, the delay between defaecation, ...
• Productive performance of commercial growing and finishing pigs supplemented with a Buttiauxella phytase as a total replacement of inorganic phosphate 

  Dersjant-Li, Yueming; Plumstead, P.W. (Peter); Awati, Ajay; Remus, Jane (Elsevier, 2018-02)

  The objective of this study was to test if a novel phytase from Buttiauxella sp. can replace all added inorganic phosphate in a diet with reduced Ca and metabolizable energy (ME) fed to commercial pigs from 12 kg body ...
• Effect of concentrate level on enteric methane emissions, production performance and rumen fermentation of Jersey cows grazing kikuyu-dominant pasture during summer 

  Van Wyngaard, J.D.V. (Josef); Meeske, R.; Erasmus, L.J. (Lourens Jacobus) (American Dairy Science Association, 2018)

  The effect of concentrate feeding level on enteric methane (CH4) emissions from cows grazing medium quality summer pasture is yet to be investigated. Sixty multiparous Jersey cows (9 rumen-cannulated) were used in a ...
• Effect of concentrate feeding level on methane emissions, production performance and rumen fermentation of Jersey cows grazing ryegrass pasture during spring 

  Van Wyngaard, J.D.V. (Josef); Meeske, R.; Erasmus, L.J. (Lourens Jacobus) (Elsevier, 2018-07)

  Dietary supplementation has been well documented as an effective enteric methane (CH4) mitigation strategy. However, limited studies have demonstrated the effect of concentrate level on enteric CH4 emissions from grazing ...
• Effect of dietary nitrate on enteric methane emissions, production performance and rumen fermentation of dairy cows grazing kikuyu-dominant pasture during summer 

  Van Wyngaard, J.D.V. (Josef); Meeske, R.; Erasmus, L.J. (Lourens Jacobus) (Elsevier, 2018-10)

  Dietary nitrate supplementation is an effective methane (CH4) mitigation strategy in total mixed ration based diets fed to ruminants. To date, limited information is available on the effect of dietary nitrate on CH4 ...
• Technical note: A simple back-mounted harness for grazing dairy cows to facilitate the sulfur hexafluoride tracer gas technique 

  Van Wyngaard, J.D.V. (Josef); Meeske, R.; Erasmus, L.J. (Lourens Jacobus) (American Dairy Science Association, 2018-03)

  We describe here a cattle harness to attach a gas collection vessel to facilitate the sulfur hexafluoride (SF6) tracer gas technique. The harness consists of 2 major components: (1) a lightweight, robust body fabricated ...
• Genome-wide marker discovery in three South African indigenous cattle breeds (Afrikaner Drakensberger and Nguni) using next generation sequencing 

  Zwane, Avhashoni Agnes (University of Pretoria, 2018)

  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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