Tersia Needham
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View article: Nursing Behaviour in Alpacas: Parallels in the Andes and Central Europe, and a Rare Allonursing Occurrence
Nursing Behaviour in Alpacas: Parallels in the Andes and Central Europe, and a Rare Allonursing Occurrence Open
Understanding maternal behaviour is essential for good animal husbandry; yet, little scientific information currently exists regarding nursing behaviour of alpacas (Vicugna pacos). Moreover, allonursing (the nursing of non-filial offspring…
View article: The Effect of Yellow and White Lupine Meals on the Growth Performance, Carcass Composition, and Meat Quality of Fleckvieh Finishing Bulls
The Effect of Yellow and White Lupine Meals on the Growth Performance, Carcass Composition, and Meat Quality of Fleckvieh Finishing Bulls Open
The aim of the study was to investigate the incorporation of white (WL) and yellow lupine (YL) seed meal as a replacement for rapeseed meal (RS) in the diets of finishing bulls with respect to growth, serum biochemical parameters, carcass …
View article: Evaluation of Chemical Composition and Anti-Staphylococcal Activity of Essential Oils from Leaves of Two Indigenous Plant Species, Litsea leytensis and Piper philippinum
Evaluation of Chemical Composition and Anti-Staphylococcal Activity of Essential Oils from Leaves of Two Indigenous Plant Species, Litsea leytensis and Piper philippinum Open
Many indigenous plants of the Philippines, including essential oil-bearing species, remain phytochemically and pharmacologically unexplored. In this study, the chemical composition of leaf essential oils (EOs) hydrodistilled from Litsea le…
View article: Histochemical composition of muscles differing in physiological function from three contrasting ruminant species
Histochemical composition of muscles differing in physiological function from three contrasting ruminant species Open
The utilisation of game meat contributes towards various Sustainable Development Goals; however, it is necessary to quantify and optimise game meat quality for the commercial market to ensure high and uniform product quality to ensure cons…
View article: Evaluation of In Vitro Synergistic Effects of Tetracycline with Alkaloid-Related Compounds against Diarrhoeic Bacteria
Evaluation of In Vitro Synergistic Effects of Tetracycline with Alkaloid-Related Compounds against Diarrhoeic Bacteria Open
Diarrhoea remains an important public health concern, particularly in developing countries, and has become difficult to treat because of antibacterial resistance. The development of synergistic antimicrobial agents appears to be a promisin…
View article: The Effect of Sex on the Chemical and Mineral Composition of the Meat, Bone and Liver of Giraffe (Giraffa giraffa angolensis)
The Effect of Sex on the Chemical and Mineral Composition of the Meat, Bone and Liver of Giraffe (Giraffa giraffa angolensis) Open
Consumers tend to buy meat based on visual physical characteristics, which are affected by the chemical composition of the meat, and there is very little known about the chemical composition of the meat of giraffe. This study therefore aim…
View article: Evaluation of In Vitro Synergistic Interactions of Tetracycline with Alkaloid-Related Compounds against Diarrheagenic Bacterial Pathogens
Evaluation of In Vitro Synergistic Interactions of Tetracycline with Alkaloid-Related Compounds against Diarrheagenic Bacterial Pathogens Open
Diarrhea-related mortality remains an important public health concern, particularly in developing countries, and has become difficult to treat because of antibacterial resistance. The development of synergistic antimicrobial agents appears…
View article: Effects of Immunocastration and Amino Acid Supplementation on Yearling Fallow Deer (Dama dama) Testes Development
Effects of Immunocastration and Amino Acid Supplementation on Yearling Fallow Deer (Dama dama) Testes Development Open
Forty-four fallow deer bucks (10 months old; 22.9 ± 2.4 kg) were utilized to investigate the effects of immunocastration and amino acid supplementation on testes development. Immunocastrated bucks were administered Improvac® at weeks 1, 8,…
View article: Management Aspects of the Captive-Bred African Buffalo (<i>Syncerus caffer</i>) in South Africa
Management Aspects of the Captive-Bred African Buffalo (<i>Syncerus caffer</i>) in South Africa Open
Buffalo are ranched primarily to produce trophy animals, but inferior animals represent a good potential for meat production. Estimating and applying the well-reasoned stocking rates and feed supplementation during periods of nutrient shor…
View article: Effects of immunocastration and supplementary feeding level on the performance and blood biochemical markers of farmed yearling fallow deer (<i>Dama dama</i>)
Effects of immunocastration and supplementary feeding level on the performance and blood biochemical markers of farmed yearling fallow deer (<i>Dama dama</i>) Open
In cervids, blood biochemical markers may reflect changes in various physiological and environmental factors, especially in response to changes in metabolism following nutrient supplementation or the manipulation of hormone production. Dec…
View article: Carcass and Offal Yields of Farmed Common Eland (Taurotragus oryx) Males, as Affected by Age and Immunocastration
Carcass and Offal Yields of Farmed Common Eland (Taurotragus oryx) Males, as Affected by Age and Immunocastration Open
This study investigated the effects of immunocastration and slaughter age on the carcass yield performance of intensively farmed common eland males. Eighteen male eland (five immunocastrated juveniles, three intact juveniles, five immunoca…
View article: Borrelia spirochetes in European exotic farm animals
Borrelia spirochetes in European exotic farm animals Open
Ticks transmit a broad spectrum of pathogens, threatening both animal and human health. Tick survival and proliferation are strongly dependent on host selection and suitability. The hard tick Ixodes ricinus , which is widespread throughout…
View article: Potential benefits of amino acid supplementation for cervid performance and nutritional ecology, with special focus on lysine and methionine: A review
Potential benefits of amino acid supplementation for cervid performance and nutritional ecology, with special focus on lysine and methionine: A review Open
Deer farming is a thriving industry for venison, velvet antlers, trophy hunting, and other by-products. Feeding and nutrition are important factors for improving production performance, especially dietary protein and amino acids (AAs), as …
View article: Carcass Yields and Physical-Chemical Meat Quality Characteristics of Namibian Red Hartebeest (Alcelaphus buselaphus) as Influenced by Sex and Muscle
Carcass Yields and Physical-Chemical Meat Quality Characteristics of Namibian Red Hartebeest (Alcelaphus buselaphus) as Influenced by Sex and Muscle Open
This study determined the carcass yields of red hartebeest from Namibia and compared the physical-chemical meat quality characteristics of six different muscles (biceps femoris, infraspinatus, longissimus thoracis et lumborum, semimembrano…
View article: Sensory Characteristics of Male Impala (Aepyceros melampus) Meat, Produced under Varying Production Systems and Nutrition
Sensory Characteristics of Male Impala (Aepyceros melampus) Meat, Produced under Varying Production Systems and Nutrition Open
The objective of this study was to determine the influence of three production systems (intensive, semi-extensive and extensive) with differing nutrition on the descriptive sensory and fatty acid profiles of sub-adult (±15–18 months old) m…
View article: Combined Effect of Dietary Protein, Ractopamine, and Immunocastration on Boar Taint Compounds, and Using Testicle Parameters as an Indicator of Success
Combined Effect of Dietary Protein, Ractopamine, and Immunocastration on Boar Taint Compounds, and Using Testicle Parameters as an Indicator of Success Open
This study investigates the combined effect of immunocastration, dietary protein level (low, medium or high) and ractopamine hydrochloride supplementation (0 or 10 mg/kg) on the adipose concentrations of androstenone, skatole and indole in…
View article: Physical Changes during Post-Mortem Ageing of High-Value Impala (Aepyceros Melampus) Steaks
Physical Changes during Post-Mortem Ageing of High-Value Impala (Aepyceros Melampus) Steaks Open
Antelope meat production is rapidly growing, not only due to their adaptation to marginal land usage, but also because of its favorable nutritional properties and free-range production. However, limited information is available on the meat…
View article: Comparison of two muscle fibre staining techniques and their relation to pork quality traits
Comparison of two muscle fibre staining techniques and their relation to pork quality traits Open
This study compared two histochemical staining methods of muscle fibres and evaluated their relationship with the meat quality traits of two high-value porcine muscles. Immunohistochemical (IHC) and adenosine triphosphatase (ATPase) staini…
View article: Correlations between PORCUS classification and androstenone in boars, and effects of cooking methods thereon
Correlations between PORCUS classification and androstenone in boars, and effects of cooking methods thereon Open
The aim of this research was to evaluate relationships between the PORCUS classification system and factors affecting boar taint in pork. Intact male pork carcasses (n = 176) were randomly selected in a South African commercial abattoir fr…
View article: Carcass Yields and Physiochemical Meat Quality of Semi-extensive and Intensively Farmed Impala (Aepyceros melampus)
Carcass Yields and Physiochemical Meat Quality of Semi-extensive and Intensively Farmed Impala (Aepyceros melampus) Open
The effects of sex and production systems on carcass yield, meat quality and proximate composition of sub-adult impala were evaluated by culling 35 impala from intensive (12 males) and semi-extensive (12 males and 11 females) production sy…
View article: Application of immunocastration in a commercial Dohne Merino ram flock before weaning
Application of immunocastration in a commercial Dohne Merino ram flock before weaning Open
CITATION: Needham, T., Lambrechts, H. & Hoffman, L. C. 2018. Application of immunocastration in a commercial Dohne Merino ram flock before weaning. South African Journal of Animal Science, 48(6):1115-1120, doi:10.4314/sajas.v48i6.15.
View article: Extending the interval between second vaccination and slaughter: I. Effects on growth, scrotal size and stress responses of immunocastrated ram lambs
Extending the interval between second vaccination and slaughter: I. Effects on growth, scrotal size and stress responses of immunocastrated ram lambs Open
Immunocastration provides a less invasive means of castrating lambs. Considering increasing consumer awareness, the efficacy of this technique on commercial slaughter lambs needs to be further investigated and its effects on growth and str…
View article: Castration of male livestock and the potential of immunocastration to improve animal we
Castration of male livestock and the potential of immunocastration to improve animal we Open
CITATION: Needham, T., Lambrechts, H. & Hoffman, L. C. 2017. Castration of male livestock and the potential of immunocastration to improve animal welfare and production traits : invited Review. South African Journal of Animal Science, 47(6…
View article: Growth responses of entire and immunocastrated male pigs to dietary protein with and without ractopamine hydrochloride
Growth responses of entire and immunocastrated male pigs to dietary protein with and without ractopamine hydrochloride Open
The interaction between dietary balanced protein, ractopamine (RAC) and Improvac (IMP) on the growth response of 120 individually penned male PIC© pigs was evaluated. The pigs entered the trial at 16 weeks of age and were assigned to 12 tr…