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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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Discovery in Scorpius constellation may signify clean energy for Earth
2017-01-23

 Description: Discovery in Scorpius constellation may signify clean energy for Earth Tags: Discovery in Scorpius constellation may signify clean energy for Earth

Earlier this year, a group of international astronomers
announced the discovery of an exotic binary star system,
AR Scorpii. The system is in the Scorpius constellation.
Photos: Supplied

See article on Nature’s website 

In future, stargazers and astronomers will look at the Scorpius constellation near the Milky Way with new eyes. Earlier this year, a group of international astronomers announced the discovery of an exotic binary star system, AR Scorpii. The system is in the Scorpius constellation.

Prof Pieter Meintjes, researcher in the Department of Physics at the University of the Free State (UFS), worked with four colleagues on what he describes as a “wonderful discovery”. This sensational discovery, which could lead to the production of cleaner energy on Earth, will be published in the research journal, Nature, early in 2017.

Model developed to interpret new set of measurements
The exotic binary star which was discovered consists of a red dwarf and a white dwarf revolving around each other every 3,5 hours. The binary system showed very prominent pulsations of 117 and 118 seconds respectively. The pulsations can be explained by a bundle radiation produced by the white dwarf star.

“These new observations have shown that the radiation is strongly polarised, a sign that we are dealing with synchrotron radiation here. Synchrotron radiation is produced by electrons accelerated to extremely high energy levels in the magnetic field of the white dwarf star,” says Prof Meintjes.

He developed a theoretical model to interpret a new set of measurements that was taken by the 1,9 m telescope and the 10 m SALT telescope at the South African Astronomical Observatory (SAA0).

Totally unique phenomenon could contribute to energy production on Earth
“I further indicated that the interaction between the magnetic fields of the white dwarf star and the red dwarf star induces secondary processes that specifically describe the behaviour of the radiation in the radio band and infrared band accurately. AR Sco is the first white-red dwarf binary system of which all the pulsated radiation could be explained by the synchrotron process, which is totally unique,” says Prof Meintjes.

According to Prof Meintjes, the value of the model lies in the fact that the processes which produce the radiation in AR Sco, can also be applied to produce energy on Earth.

 

Plasma reactors are based on roughly the same processes which apply in AR Sco, and with refining, it could be utilised to generate electricity in future. This will be much cleaner than nuclear energy.

 

The model developed by Prof Meintjes explains all the radiation in the system – from radio waves to X-rays – in terms of electrons accelerated to extremely high energy levels by electric fields in the system, which then produce synchrotron radiation over a very wide band of the electromagnetic spectrum.

Prof Meintjes is currently working on a follow-up article examining the evolution of the AR Sco, in other words, the origin of such a unique system and the final state towards which it is evolving. “My vision for the immediate future is therefore to develop a model for the evolution of the source concerned,” he says.

 

 

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