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14 December 2021 | Story Leonie Bolleurs | Photo Supplied
Ofhani Mavhungu was recently awarded the Professor Rob Gous Scholarship by the Animal Feed Manufacturers Association (AFMA) of South Africa.

From a very early age, Ofhani Mavhungu knew he wanted to be involved in agriculture one day. Fast forward a few decades and you find Ofhani enrolled for the MScAgric Animal Science degree at the University of the Free State (UFS).

As a goal-orientated person who is open to new ventures, he reckons this degree will broaden his knowledge and understanding of the industry. “I believe Animal Science is an interdisciplinary field of study that enables students like me to pursue various career opportunities, ranging from primary animal production to secondary product processing, retail, and quality assurance. This motivates me to be part of the team that will ensure food security for the future generation,” says Ofhani.

Opening doors to a career in Animal Science

The Professor Rob Gous Scholarship for 2020/2021 that was jointly awarded to him and Victor Makofane of the University of Limpopo by the Animal Feed Manufacturers Association (AFMA) of South Africa, is for Ofhani a step closer to realising his dreams. 

“Diligence and hard work have always been the driving force throughout my studies, and I am delighted that my hard work was rewarded. This award further reflects on the Department of Animal Science’s dedication and commitment to build and mentor strong candidates who are recognised by the industry,” he says.

With increasing animal feed costs, the search for more cost-effective feed utilisation techniques – without compromising the nutritive value or feed quality – becomes critically important for intensive broiler producers. 

Ofhani’s study, which aims to evaluate the effect of increasing levels of a nutritional fat emulsifier with a high HLB on the (i) diet digestibility and (ii) production performance of broilers, will provide some insight into the possible energy-saving effect of dietary emulsifiers with a high HBL in broiler diets with moderate lipid inclusion levels. 

“A digestibility study will give more information on the emulsifier effect at metabolic level, and a production study will provide information on growth characteristics and carcass composition.”

An opportunity to compete with other candidates in the industry

“Few studies have been conducted on lipid emulsifiers under South African conditions, which necessitates the need for further research in this field,” he says. 

Ofhani, whose motto in life is to stay humble and accept positive criticism – as it is meant to enlighten you – wants to pursue a career in the animal feed industry. “My qualification will give me an opportunity to compete with other candidates of our generation in the industry, as well as on a research/academic level. By completing my MScAgric, I will broaden my own skill set so that I can continue with industry-related research in the future and provide mentorship to prospective animal scientists,” he adds. 

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Mathematical methods used to detect and classify breast cancer masses
2016-08-10

Description: Breast lesions Tags: Breast lesions

Examples of Acho’s breast mass
segmentation identification

Breast cancer is the leading cause of female mortality in developing countries. According to the World Health Organization (WHO), the low survival rates in developing countries are mainly due to the lack of early detection and adequate diagnosis programs.

Seeing the picture more clearly

Susan Acho from the University of the Free State’s Department of Medical Physics, breast cancer research focuses on using mathematical methods to delineate and classify breast masses. Advancements in medical research have led to remarkable progress in breast cancer detection, however, according to Acho, the methods of diagnosis currently available commercially, lack a detailed finesse in accurately identifying the boundaries of breast mass lesions.

Inspiration drawn from pioneer

Drawing inspiration from the Mammography Computer Aided Diagnosis Development and Implementation (CAADI) project, which was the brainchild Prof William Rae, Head of the department of Medical Physics, Acho’s MMedSc thesis titled ‘Segmentation and Quantitative Characterisation of Breast Masses Imaged using Digital Mammography’ investigates classical segmentation algorithms, texture features and classification of breast masses in mammography. It is a rare research topic in South Africa.

 Characterisation of breast masses, involves delineating and analysing the breast mass region on a mammogram in order to determine its shape, margin and texture composition. Computer-aided diagnosis (CAD) program detects the outline of the mass lesion, and uses this information together with its texture features to determine the clinical traits of the mass. CAD programs mark suspicious areas for second look or areas on a mammogram that the radiologist might have overlooked. It can act as an independent double reader of a mammogram in institutions where there is a shortage of trained mammogram readers. 

Light at the end of the tunnel

Breast cancer is one of the most common malignancies among females in South Africa. “The challenge is being able to apply these mathematical methods in the medical field to help find solutions to specific medical problems, and that’s what I hope my research will do,” she says.

By using mathematics, physics and digital imaging to understand breast masses on mammograms, her research bridges the gap between these fields to provide algorithms which are applicable in medical image interpretation.

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