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Browsing Research Articles (Animal and Wildlife Sciences) by Author "Casey, Norman Henry"
Now showing items 1-20 of 20
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Casey, Norman Henry; Lucht, Heike Luise; Reijnders, B. (South African Society for Animal Science, 2019)Bromide (Br-) concentrations (mg/L) in groundwater range from no observed adverse effect levels (NOAEL), which is considered safe, and increase to constituent of concern (COC) when the concentrations approach the recommended ...
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Dietary influences on lutein pigments and carcass fat quality in wethers of different maturity types Webb, E.C. (Edward Cottington); Casey, Norman Henry; Bosman, M.J.C. (South African Society for Animal Science, 1999-01)The aim of this research was to study the effect of high-maize diets and pelleting on the accumulation of lutein pigments and appearance of the subcutaneous fat in Dorper and SA Mutton Merino wethers. High and medium energy ...
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Du Toit, Johan T.; Casey, Norman Henry (South African Society for Animal Science, 2010)Levels of bromine (Br) in groundwater that exceeded guideline concentrations of 0.01 mg/L prompted the investigation of the effect Br and iodine (I) in drinking water on the production parameters of broilers. The research ...
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Lukasiewicz, M.; Lozicki, A.; Casey, Norman Henry; Chwalibog, A.; Niemiec, J.; Matuszewski, A.; Sosnowska, M.; Wierzbicki, M.; Zielinska, M.; Balaban, J.; Sawosz, E. (South African Society for Animal Science, 2020-03-10)The hypothesis was that owing to their high bioavailability, zinc oxide nanoparticles (NanoZnO) can effectively replace (Zn) salts and reduce Zn excretion with faeces. The objective of this study was to investigate the ...
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Steyn, Willem Johannes; Casey, Norman Henry; Jansen van Rensburg, Christine (South African Society for Animal Science, 2012)The study tested the performance of intact male pigs from a selected genetic line subjected to differing feeding regimens and penning conditions. The trial was a 2 x 3 x 2 x 3 factorial design, consisting of winter and ...
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Mamabolo, M.C.; Meyer, J.A. (James Andries); Casey, Norman Henry (South African Society for Animal Science, 2009)Water quality constituents ingested through drinking water can affect the animal's physiology negatively and, through bioaccumulation in tissues, pose a biohazard to consumers. The study evaluated the effectiveness of a ...
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Adabi, Sh.G.; Hajibabaei, Ali; Casey, Norman Henry; Bayraktaroglu, A.G. (South African Society for Animal Science, 2016)Twenty-six-week-old laying hens (90 Lohmann Classic Brown) received dietary treatments containing canola and linseed oil at 2% inclusion levels and a control diet for 21 days. The 2% dietary linseed oil, which had higher ...
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Casey, Norman Henry (Elsevier, 2010-03)Intellectual capital (IC) is a key concept to sustaining a global livestock industry. Accumulated IC in animal science has contributed to successfully developing an efficient global industry, but that has come at a cost ...
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O’Neill, H. Adri (Hester Adriana); Casey, Norman Henry; Webb, E.C. (Edward Cottington) (South African Society for Animal Science, 2010)Bonsmara type steers were used to determine the effect of dietary zilpaterol hydrochloride (ZH) in combination with different dietary crude protein (CP) levels (100, 120 and 140 g CP/kg) on growth performance and meat ...
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Du Toit, Johan T.; Casey, Norman Henry (Elsevier, 2012-04)The study pursued the hypothesis that bromine (Br) in drinking water at levels > 0.01 mg Br/L may have detrimental effects on the liver, kidneys and thyroid and the thyroid hormones T3 and T4 and that iodine (I) may alleviate ...
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Casey, Norman Henry (Oxford University Press, 2023-10-13)Change and adaptation are the phenomena of life. Throughout the existence of life on earth, biological systems have adapted and changed physiologically and morphologically to acquire a homeostasis most suitable for the ...
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Casey, Norman Henry; Webb, E.C. (Edward Cottington) (Elsevier, 2010-03)Managing goat production for meat quality is a deliberate, active process that reaches from conception to consumption. The concept of quality in meat is universal, being wholesome, nutritious and palatable. Goat meat is ...
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Webb, E.C. (Edward Cottington); Casey, Norman Henry (Elsevier, 2010-03)Commercialisation of animal agriculture changed the phenotype and production characteristics of livestock. The sigmoidal growth curve and sequence of physiological events remained virtually unchanged, but the rate and ...
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Lucht, Heike Luise; Casey, Norman Henry (Water Research Commission, 2019)Many regions across South Africa are dependent on groundwater as the only water source for livestock watering and domestic use. This paper presents an analysis of 350 water samples from collated data of 5 reports published ...
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Janse van Rensburg, Estrelita; Casey, Norman Henry; Jordaan, J.C. (Joyce); Webb, E.C. (Edward Cottington) (Elsevier, 2020-06)The agricultural product market is changing from a producer-orientated to a more consumer-orientated market. Consumer rely on the classification system within the red meat types. Different red meat types and carcass ...
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Casey, Norman Henry (Oxford University Press, 2021-07)South Africa has a precolonial livestock production legacy that is carried through to modern times. The livestock industry through its structural organizations, endorsed the country’s commitments to the UNFCCC (1997), ...
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Coetzee, P.C.; Casey, Norman Henry (South African Society for Animal Science, 2009)In a 2 x 2 factorial design, attainment of puberty in 32 Black Indigenous (BI) and 60 SA Landrace (SAL) gilts was studied under the effects of two treatment diets fed individually ad libitum. Treatment 1 contained 160 g ...
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Hajibabaei, Ali; Casey, Norman Henry (South African Society for Animal Science, 2012)The objective was to determine the growth responses of Black Neck ostrich chicks to different dietary levels of L-carnitine in pre-starter diets. Thirty-two day-old ostrich chicks were randomly divided into four treatments ...
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Lucht, Heike Luise; Casey, Norman Henry; Sawosz, E. (South African Society for Animal Science, 2018-07-05)The range of bromide (Br-) in groundwater sources surveyed in South Africa is 0 - 18.4 mg/L. The research aimed to establish chicken embryo sensitivity to a range of Br- treatments (mg/L) injected into fertilised Ross-308 ...
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Reinecke, Riana; Casey, 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 ...
Now showing items 1-20 of 20