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05 November 2021 | Story Leonie Bolleurs | Photo Supplied
Andries van der Merwe was presented the Koos van der Merwe AFMA Student of the Year Award as the most outstanding final-year student in Animal Nutrition in 2021/2022.

Since childhood, a love of animals, nature, and agriculture has been instilled in Andries van der Merwe. He used to accompany his father, the local veterinarian in Postmasburg, helping where he could. “I can still vividly remember the first C-section I helped him with when I was about 12,” he says. 

A few years later, Andries decided to enrol for his studies at the University of the Free State (UFS) in order to get his grades up to study veterinary medicine one day. “But when I reached my third year and started with the subject Animal Nutrition, I saw that I could make a bigger difference and contribution to the agricultural sector through nutrition. The moment I realised this, my mind was made up to study towards becoming an animal nutritionist,” he says.

Viable alternative to the excessive use of antibiotics

His master’s thesis on the use of tannins as a feed additive to increase the production efficiency of ruminants (sheep, cattle, and goats) is also looking for a viable alternative to the excessive use of antibiotics to treat certain non-specific ailments such as diarrhoea and skin diseases.

With his work having the potential to one day make a difference in the agricultural sector, as well as some encouragement from his supervisor, Dr Ockert Einkamerer, Senior Lecturer in the Department of Animal Science, Andries entered and won AFMA’s Student of the Year competition. 

During a virtual symposium on 18 October 2021, the Animal Feed Manufacturers Association (AFMA) presented Andries with the Koos van der Merwe AFMA Student of the Year Award as the most outstanding final-year student in Animal Nutrition in 2021/2022.

“I have no idea what could have impressed the judges”, says Andries, who competed with students from universities across South Africa. 

Making a contribution to animal feeding in South Africa

“I am the second student from the UFS to win this award. Gert Daniel Jacobus Scholtz received the award in 1998 – my birth year,” says Andries. 

“It is an enormous honour for me to receive this highly prestigious award. I believe that the exposure I receive due to this reward will help me to secure a position where I can make a valuable contribution to the industry much quicker,” he adds.

De Wet Boshoff, Executive Director of AFMA, commended Andries: “I wish to congratulate you on behalf of the Animal Feed Manufacturers Association (AFMA) on winning the award. I believe it will encourage you to – through further studies and your career in the future – make a contribution to animal feeding in the Republic of South Africa.”

The award consists of a certificate and a cash amount of R20 000 sponsored by AFMA.

Andries is planning on completing his master’s degree. “I am considering a PhD and a Master’s of Business Administration. The latter is to ensure that I will be a vital part of any company in the industry,” he says.

“What is meant to happen will happen … you just need to have faith,” he believes.

News Archive

Nuclear Medicine on the forefront of cancer research
2017-07-10

Description: Nuclear Medicine on the forefront of cancer research Tags: Nuclear Medicine, cancer research, Dr Je’nine Horn-Lodewyk’s, tumour detection method, cancer, Department of Nuclear Medicine 

Dr Je’nine Horn-Lodewyk’s tumour detection method
could be the cost-effective breakthrough needed to decrease
the mortality rate in breast cancer patients.
Photo: Anja Aucamp

The field of Nuclear Medicine in South Africa and the rest of the world are expanding rapidly due to the development of hybrid cameras and new radiopharmaceuticals. These developments have a huge impact on the diagnosis and therapy of cancer.

The most advanced of these cameras, Positron emission tomography combined with normal CTs (PETCT), are not yet widely available in South Africa due to the cost of the cameras and the radiopharmaceuticals. A more cost-effective alternative can be of great benefit. To achieve this, the focus should be on developing new radiopharmaceuticals that can be used with the current cost-effective gamma cameras, according to University of the Free State researcher, Dr Je’nine Horn-Lodewyk from the Department of Nuclear Medicine.

Fluorodeoxyglucose (18F-FDG), a radiolabelled glucose analogue, is currently the radiopharmaceutical most commonly used in PET/CT imaging for mainly oncology indications. Although it is considered the gold standard for imaging in several malignancies, it does have certain disadvantages. An 18F-FDG PET/CT diagnostic imaging study can cost between R25 000 and R35 000 for a single patient in the private sector. The 18F-FDG is also more radioactive, which requires much stricter handling and shielding to avoid high radiation dosages to staff and patients.

Successful research potential innovative solution
In the search for the ideal radiopharmaceutical for tumour detection, the South African National Nuclear Energy Corporation (Necsa) developed a local synthesis process for ethylenedicysteine-deoxyglucose (EC-DG). EC-DG is also a glucose analogue similar to FDG. They succeeded in labelling the compound with Technetium-99-metastable-pertechnetate (99mTcO4-), the most common nuclear medicine isotope used for approximately 95% of nuclear medicine procedures, creating 99mTc-EC-DG.

In partnership with Dr Horn-Lodewyk, this compound was successfully used in various animal models and clinical scenarios, resulting in approval by the Medicine Control Council to use it in a human study. Research is also planned in order to investigate diagnostic accuracy in other cancers like lymphoma.  The end result of this research can produce a radiopharmaceutical that is cost effective, does not require the use of costly specialised equipment, has no significant side-effects, no special patient preparation, renders late imaging possible, and has decreased radiation risks.

Dr Horn-Lodewyk is grateful for the support of her mentor, Prof Anton Otto, as well as Dr Gert Engelbrecht, Head of the Department of Nuclear Medicine, Prof Jan Rijn Zeevaart from North-West University’s Preclinical Drug Development Platform and Necsa, and Judith Wagener from Necsa. This innovative research would also not have been possible without the financial assistance of Dr Glen Taylor and Eleanor van der Westhuizen in the Directorate of Research Development.

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