• A whole farm model for quantifying total greenhouse gas emissions on South African dairy farms 

  Reinecke, Riana; Casey, N.H. (Norman Henry) (South African Society for Animal Science, 2017-10-13)

  This paper presents a model to quantify total greenhouse gas (GHG) emissions from dairy farms. The model, which is based on a whole farm management approach, accounts for the variability that occurs in GHG emissions among ...
• Effects of short and extended fasting periods and cattle breed on glycogenolysis, sarcomere shortening and Warner-Bratzler shear force 

  O’Neill, H.A.; Webb, E.C. (Edward Cottington); Frylinck, L.; Strydom, P.E. (South African Society for Animal Science, 2018)

  The effects of short (three hours) and extended (24 hours) feed withdrawal periods and three cattle breeds on muscle energy metabolism, sarcomere length, and meat quality were investigated. Brahman (Br), Nguni (Ng), and ...
• The use of certain medicinal plant extracts reduced in vitro methane production while improving in vitro organic matter digestibility 

  Akanmu, Abiodun M.; Hassen, Abubeker (CSIRO, 2018)

  Some medicinal plants have the tendency to manipulate the rumen microbial ecosystem, which in turn might reduce methane (CH4) emissions. The anti-methanogenic activities of leaf fraction of Piper betle, Aloe vera, Carica ...
• Comparative performance of dairy cows in low-input smallholder and high-input production systems in South Africa 

  Abin, Samuel; Visser, Carina; Banga, C.B. (Springer, 2018-03)

  The aim of this study was to benchmark the performance of dairy cows in the low-input smallholder system against their counterparts in the high-input system, in South Africa. Data comprised of cow performance records from ...
• A planetary health approach to secure, safe, sustainable food systems : workshop report 

  Alders, Robyn G.; Ratanawongprasat, Natalie; Schonfeldt, H.C. (Hettie Carina); Stellmach, Darryl (Springer, 2018-04)

  Experts from 17 countries across six continents representing practitioners, researchers, policy makers and community development workers gathered from 30 November to 2 December 2016 at the University of Sydney to communicate ...
• Genetic analysis of body weight at different ages in the Grootfontein Merino Stud 

  Nemutandani, Khetho Ratshilumela (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 ...
• Epidemiological and partial budget analysis for treatment of subclinical Staphylococcus aureus intramammary infections considering microbiological and cytological scenarios 

  Petzer, Inge-Marie; Etter, Eric M.C.; Donkin, Edward Francis; Webb, E.C. (Edward Cottington); Karzis, Joanne (Elsevier, 2017-12)

  An innovative method was investigated to aid in the elimination of Staphylococcus aureus (S. aureus) intramammary infections (IMI) from dairy herds. A stochastic model explore the economic benefit of three-day or eight-day ...
• Carcass and meat quality of boer and indigenous goats of South Africa under delayed chilling conditions 

  Pophiwa, Pamela; Webb, E.C. (Edward Cottington); Frylinck, L. (South African Society for Animal Science, 2017-09-28)

  This study was conducted to evaluate the carcass and meat quality of Boer goats and unimproved indigenous goats of South Africa, under delayed chilling conditions. Ten goats per breed were used for the study. The goats ...
• Comparison of on-farm progeny performances from local and imported boar semen used in the South African pig industry 

  Kruger, D.A.; Van Marle-Koster, Este; Theron, Helena E. (South African Society for Animal Science, 2017-09-11)

  The widespread use of artificial insemination in the pig industry has provided breeders with access to genetic material from superior boars from around the world. Selection of parent stock is based on estimated breeding ...
• Impacts of dietary calcium, phytate, and phytase on inositol hexakisphosphate degradation and inositol phosphate release in different segments of digestive tract of broilers 

  Li, W.; Angel, R.; Kim, S.W.; Brady, K.; Yu, S.; Plumstead, P.W. (Oxford University Press, 2017-10)

  A total of 720 straight-run Heritage 56 M × fast feathering Cobb 500F broiler chickens was fed from 11 to 13 d of age to determine the impacts of dietary calcium (Ca), phytate phosphorus (PP), and phytase concentrations ...
• Policy for the complex burden of malnutrition in Africa : a research agenda to bring consumers and supply chains together 

  Thow, Anne Marie; Viljoen, Annemarie T.; Schonfeldt, H.C. (Hettie Carina); De Kock, Henrietta Letitia; Du Rand, Gerrie Elizabeth; Gericke, Gerda J.; Negin, Joel (Cambridge University Press, 2017-04)

  As the emerging burden of diet-related non-communicable diseases establishes itself firmly alongside food insecurity and undernutrition in urban centres, nutrition policy research needs to consider in more detail the ...
• Effects of supplementing different proportions of cellulase and xylanase enzyme mixtures on intake and digestibility of high forage total mixed ration by sheep 

  Selzer, Karla (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 ...
• Digesta markers for evaluating the effect of exogenous enzymes on nutrient digestibility in beef feedlot cattle 

  Van Wyk, Anna Maria (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. ...
• Chemical composition and in vitro ruminal fermentation characteristics of cowpea varieties in the Limpopo Province, South Africa 

  Mbukwane, Mbuso Jethro (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 ...
• Reproduction performance of Saanen bucks supplemented with selenium 

  Mojapelo, Mamokou Margaret (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) ...
• Replacing sunflower oilcake with Sericea lespedezaand/or urea on feed digestibility and milk production of Saanen goats 

  Malate, Andries (University of Pretoria, 2017)

  In conditions where supplementation of poor quality diets is a major challenge, forage legumes such as Sericea lespedeza can be a good alternative supplement for protein at lower cost than most commercial concentrates. ...
• Effect of nitrogen and energy supplementation on intake, digestibility and rumen fermentation efficiency in sheep fed poor quality Eragrostis curvula hay 

  Mynhardt, Herman (University of Pretoria, 2017)

  The overall aim of the study was to study the effects of starch and urea supplementation on roughage intake, digestibility, and microbial nitrogen synthesis (MNS) in sheep fed low-quality Eragrostis curvula hay (< 3% CP, ...
• Effects of electrical stimulation and delayed chilling on carcass and meat quality of indigenous and Boer goats in South Africa 

  Pophiwa, Pamela (University of Pretoria, 2017)

  This study investigated the effects of electrical stimulation and delayed chilling on carcass and meat quality of indigenous and Boer goats in South Africa. Ten goats per breed were randomly selected from typical indigenous ...
• Association between grinding energy and in-vitro neutral detergent fibre digestion kinetics in forages 

  Anelich, Claudia Bruna (University of Pretoria, 2017)

  Through the measurement of grinding energy, the possibility exists to predict forage fragility as related to the chemical composition of forages. It is also possible to predict a potential relationship between forage ...
• Mitigation of enteric methane emissions from ruminants in subtropical production systems 

  Du Toit, Cornelius Jacobus Lindeque (University of Pretoria, 2017)

  Globally agriculture and livestock producers have come under increasing pressure over the environmental impact of production systems. The objectives of this study were to re-calculate the direct methane (CH4) and nitrous ...

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