Esau Mbokane

University of Limpopo | ul · Agriculture Research Unit

One of the major bottlenecks affecting the expansion of the freshwater aquaculture sector in developing countries is the outbreak of diseases. Fish farmers have traditionally relied on antibiotics and synthetic chemicals to control diseases. However, antibiotics and synthetic chemicals are associated with negative effects on the environment and con...

Mozambique tilapia (Oreochromis mossambicus) and the African Sharptooth catfish (Clarias gariepinus) are the most farmed freshwater fish species in Southern Africa. However, production in the freshwater aquaculture sector has remained low due to, among other key factors, high cost of feeds, disease outbreaks, and poor sexual development in broodsto...

This chapter summarizes the successes and challenges of catfish farming in the small-scale industry in Southern Africa. Given that capture fisheries have been declining steadily over the years in many countries, aquaculture is generally expected to grow to meet demand. However, catfish production in most Southern African countries is low. This is d...

This study investigated the potential use of acid-fermented chicken silage on growth performance, digestive enzymes, liver and intestinal histology in Oreochromis mossambicus (Mozambique tilapia) (Peters 1852). Five silage-based diets were formulated by replacing fishmeal at 0% (control), 25%, 50%, 75% and 100%, thereafter denoted as D1, D2, D3, D4...

The main objective of this study was to evaluate the effect of replacing fishmeal with acid fermented chick meat on growth performance, activities of digestive enzymes and histology in Oreochromis mossambicus. Five diets were formulated to replace fishmeal at 0% (control) 25%, 50%, 75% and 100% with the fermented chick meat. The diets were designat...

This chapter reviews the role of medicinal plants as growth enhancers, immunostimulants, disease-controlling agents, anaesthetics, and sex reversal agents in aquaculture and perspectives on their application in African aquaculture smallholder farms. The statement that aquaculture is one of the significant contributors to global food security is unq...

This study determined the diversity and seasonality of parasites species of the African clawed frog, Xenopus laevis (Daudin, 1802), from three localities, namely Modjadjikloof, Mokopane and University of Limpopo, Limpopo Province, South Africa. A total of seven parasite species were collected and identified. They included two nematodes, Camallanus...

This study investigated the effect of Artemisia afra-based on growth, haemato-biochemical parameters and disease resistance in Clarias gariepinus (African sharptooth catfish). Five diets were formulated to contain 0%, 3%, 6%, 9% and 12% of A. afra, designated as the control, D2, D3, D4 and D5, respectively. Each diet was fed to triplicate groups of...

This experiment investigated the effect of dietary supplementation with essential oils from Artemisia afra and Moringa oleifera on haemato‐immunological parameters and resistance in Clarias gariepinus (African Sharptooth catfish) (Burchell, 1822) challenged with Aeromonas hydrophila. The experiment lasted for 45 days. Prior to and postchallenge, wh...

The effect of seasonal changes and ecological aspects of Afrodiplozoon polycotyleus (Paperna, 1973) collected on Labeobarbus marequensis (Smith, 1841), Enteromius trimaculatus (Peters, 1852) and Enteromius radiatus (Peters, 1853) was investigated from January to October 2008. Fish were collected at the Nwanedi-Luphephe dams, Limpopo River System, S...

This study investigated the extent of changes in haemato-biochemical and immunological parameters of O. mossambicus fed with M. oleifera-based diets pre and post-challenge with different concentrations of A. hydrophila. Moringa oleifera powdered leaves were added to five experimental diets at 0%, 3%, 6%, 9% and 12%, designated D1, D2, D3, D4 and D5...

This study investigated the potential of Artemisia afra on growth and disease resistance in Oreochromis mossambicus. Phytochemical analysis of A. afra was also undertaken. Five A. afra-based diets designated as D1, D2, D3, D4 and D5 were formulated and randomly fed to triplicate groups of 45 fish (32.5 ± 1 g). At the end of feeding, Food Conversion...

This study investigated the seasonal dynamics and occurrence of dactylogyrids on the gills of three cyprinids at Nwanedi-Luphephe dams from January to October 2008. The hosts, Labeobarbus marequensis (n = 53), Barbus trimaculatus (n = 63) and Barbus radiatus (n = 46), were collected using gill nets, cast nets, electrofishing gear and seine nets. A...

This study provides information on seasonal occurrence of developmental stages of endoparasites infecting three cyprinids in the Nwanedi-Luphephe dams, Limpopo River System. Labeobarbus marequensis (Smith, 1841), Barbus trimaculatus Peters, 1852 and Barbus radiatus Peters, 1853 were investigated seasonally from January 2008 to October 2008. The fol...