Research Articles (Animal Sciences)
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Extending the interval between second vaccination and slaughter : II. changes in the reproductive capacity of immunocastrated ram lambs
(Elsevier, 2019-01-17)Immunocastration improves the welfare of castrated commercial slaughter lambs; however, the time-point at which this technique influences semen quality and sperm production has not yet been established for various vaccination ... -
Extending the interval between second vaccination and slaughter : I. effects on growth, scrotal size and stress responses of immunocastrated ram lambs
(Elsevier, 2019-01-18)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 ... -
Factors influencing off-take rates of smallholder sheep farming systems in the Western Cape Provinve of South Africa
(South African Society of Agricultural Extension, 2019)The purpose of this study was to determine off-take rates in smallholder sheep farming systems in the Western Cape province of South Africa. A purposeful sampling technique was used where smallholder farmers were selected ... -
Hepatic and haemato-biochemical alterations in juvenile Mozambique tilapia (oreochromis mossambicus) on pawpaw (carica papaya) seed meal
(Canadian Center of Science and Education, 2019-06-15)Pawpaw seed meal (PSM) can be used as an antifertility agent in animals, however there is no information on its potential toxicological effect on Mozambique tilapia (O. mossambicus). In this study the effect of PSM on the ... -
Hormonal profile and reproductive parameters of pre-vitellogenic mozambique tilapia (oreochromis mossambicus) on pawpaw (carica papaya) seed meal
(Canadian Center of Science and Education, 2019-06-15)The use of phytochemicals to control precocious maturation and indiscriminate spawning among tilapia species is an important issue in aquaculture. This study investigated the influence of pawpaw (Carica papaya) seed meal ... -
Effect of late prepartum fibre-based diets on the live weight changes and reproduction of Holstein cows in the subsequent lactation period
(South African Society for Animal Science, 2019-03-07)The objective of this study was to evaluate two late prepartum fibre-based diets that differed in nonstructural carbohydrate (NFC) and protein levels on live weight (LW) changes and fertility traits of Holstein cows until ... -
Growth, carcass and meat quality traits of two South African meat rabbit breeds
(South African Society for Animal Science, 2019-10-01)Rabbits could contribute to meat production in South Africa. However, little research has been done on rabbit farming in the country, including on the performance of locally available meat breeds. This study examined the ... -
Carcass and meat quality attributes of Malawi Zebu steers fed Vachellia polyacantha leaves or Adansonia digitata seed as alternative protein sources to Glycine max
(South African Society for Animal Science, 2019-05-09)To enhance smallholder beef farmers' capacity to cope with animal feed shortages, especially dietary protein induced by climate change, it is important to evaluate the feeding value of low-cost protein sources naturally ... -
Effect of varying levels of protein concentration on production traits of ostriches (Struthio camelus var. domesticus)
(South African Society for Animal Science, 2019-07-28)The ostrich industry is poised to recover from the recent lifting of the four-year export ban on fresh meat products to the European Union EU). However, during this period profit margins were severely affected and the need ... -
Effects of varying sweet lupin dietary inclusion levels on feather classes, leather traits and meat composition of feedlot ostriches
(South African Society for Animal Science, 2017-12-01)The main consumer products derived from ostriches are feathers, leather and meat. Despite progress in optimizing production practices, additional information is still necessary about the value of various raw materials as ... -
Etorphine-Ketamine Constant Rate Infusion for Maintenance of Anaesthesia in a Compromised White Rhinoceros (Ceratotherium simum)
(Hindawi, 2019-03-12)A subadult white rhinoceros bull presented for oesophageal endoscopic evaluation and foreign body removal under general anaesthesia. The animal had a history of nasal and oral regurgitation of water and ingesta with ... -
Hermetia illucens Larvae Reared on different substrates in broiler quail diets : effect on physicochemical and sensory quality of the quail meat
(MDPI, 2019-08-02)This research aimed at improving the fatty acid (FA) profile of Hermetia illucens larvae (HI) and evaluating the effects of their inclusion in growing broiler quails’ diets on the meat physicochemical quality, including ... -
The effect of barley and lysine supplementation of pasture-based diet on growth, carcass composition and physical quality attributes of meat from farmed Fallow Deer (Dama dama) the effect of barley and lysine supplementation of pasture-based diet on growth, carcass composition and physical quality attributes of meat from farmed Fallow Deer (Dama dama)
(MDPI, 2019-01-24)Fallow deer (Dama dama) are important meat producing species providing venison and other products to an international market. The present study investigated the effects of different feed rations on the growth, carcass ... -
Towards a new phenotype for tick resistance in beef and dairy cattle : a review
(CSIRO Publishing, 2019-07-04)About 80% of the world’s cattle are affected by ticks and tick-borne diseases, both of which cause significant production losses. Cattle host resistance to ticks is the most important factor affecting the economics of ... -
Early-life gut dysbiosis linked to juvenile mortality in ostriches
(BMC (part of Springer Nature), 2020-10-12)Background: Imbalances in the gut microbial community (dysbiosis) of vertebrates have been associated with several gastrointestinal and autoimmune diseases. However, it is unclear which taxa are associated with gut dysbiosis, ... -
Combined effect of dietary protein, ractopamine, and immunocastration on boar taint compounds, and using testicle parameters as an indicator of success
(MDPI, 2020-11-14)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, ... -
Application of fat-tailed sheep tail and backfat to develop novel warthog cabanossi with distinct sensory attributes
(MDPI, 2020-12-08)This study compared the use of pork backfat (PF) and fat-tailed sheep tail and backfat (SF) on the physicochemical, fatty acids and sensory attributes of warthog cabanossi. There were no differences between weight loss ... -
Non-destructive spectroscopic and imaging techniques for the detection of processed meat fraud
(MDPI, 2021-02-18)In recent years, meat authenticity awareness has increased and, in the fight to combat meat fraud, various analytical methods have been proposed and subsequently evaluated. Although these methods have shown the potential ... -
Effects of dietary supplementation of conjugated linoleic acids and their inclusion in semen extenders on bovine sperm quality
(MDPI, 2021-02-12)Isomers of conjugated linoleic acid (CLA) enhances circulating insulin-like growth factor I (IGF-I) levels. Furthermore, fertility rate of breeding bulls is positively correlated to seminal plasma IGF-I concentration. Our ... -
Food preservative capabilities of grape (vitis vinifera) and clementinemandarin (citrus reticulata) by-products extracts in South Africa
(MDPI, 2019-03-22)The drive towards sustainable food systems coupled with increased consumer sophistication have prompted innovation in waste valorization. Grape and citrus processing by-products, abundant in the Mediterranean and tropical ...
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