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03 May 2021 | Story Leonie Bolleurs | Photo Sonia Small
Prof Robert Bragg recently participated in a live panel discussion with leaders from the food and beverage sector, debating the challenges facing the industry and sharing their lessons and solutions.

Prof Robert Bragg from the Department of Microbiology and Biochemistry at the University of the Free State formed part of a live panel discussion with leaders from the food and beverage sector, debating the challenges facing the industry and sharing their lessons and solutions.

The discussion, part of a week-long virtual event (19-23 April), was attended by more than 1 300 attendees representing 500 food manufacturers, retailers, ingredient companies, and laboratories from 83 countries.

The magazine, New Food, coordinated the initiative that focused on food integrity. Speaking with Prof Bragg at the session that centred around animal welfare, zoonotic disease, and antibiotics, were Catherine McLaughlin, Chair, Responsible Use of Medicines in Agriculture (RUMA); Vicky Bond, UK Managing Director, The Humane League; and Daniela Battaglia, Livestock Development Officer, Food and Agriculture Organization of the United Nations (FAO).

The rise of antibiotic resistance

James Russell, President of the British Veterinary Association (BVA), was the moderator of the discussion that also touched on the issues surrounding animal welfare; how animal welfare can impact meat quality; avoiding future zoonotic disease; the rise of antibiotic resistance; ethical considerations to be mindful of; and the use of pesticides and safety considerations.

Prof Bragg specifically talked about antibiotic resistance. “Mankind has major problems with antibiotics,” he said. 

He asked if animal agriculture can be sustained without the use of antibiotics and stated that it was necessary to look at alternatives. Possible solutions he suggested include improved vaccines, bacteriophages, and phage enzymes. He, however, believes that biosecurity will be the most effective alternative. 

Living in a post-antibiotic area

Disinfectants are one of the biosecurity measures taken to minimise the risk of infectious diseases. “But it is important to be aware of the fact that as resistance to antibiotics increases the resistance to disinfectants also increases,” said Prof Bragg. 

He continued: “An increase in the use of disinfectants increases the resistance to disinfectants. This is also evident in humans, especially now during the COVID-19 pandemic. Much of these disinfectants are also of poor quality,” he said. 

According to Prof Bragg, we are living in a post-antibiotic era. “Although food standards are higher in developed countries such as in Europe – where people can pay more for poultry that were fed diets with reduced antibiotics, it is important to keep in mind that people cannot pay the same for poultry in developing countries. These countries often import poultry from countries where the food standards are not that high and where birds were treated to diets containing more antibiotics. A large supplier of poultry in Africa is small-scale farmers, who also feed their birds food containing higher levels of antibiotics.” 

“We need to look at the antibiotic problem as a global problem; a concern that will be with us for a while,” said Prof Bragg.

One solution provided by the group was for mankind to reduce its meat intake and moving to a more plant-based diet. This will have a significant effect on animal welfare as well as reducing the demand for antibiotics.

News Archive

Stress and fear on wild animals examined
2013-06-04

 

Dr Kate Nowak in the Soutpansberg Mountain
Photo: Supplied
04 June 2013

Have you ever wondered how our wild cousins deal with stress? Dr Kate Nowak, visiting postdoctoral researcher at the Zoology and Entomology Department at the UFS Qwaqwa Campus, has been assigned the task to find out. She is currently conducting research on the effects that stress and fear has on primate cognition.

The Primate and Predator project has been established over the last two years, following Dr Aliza le Roux’s (also at the Zoology and Entomology Department at Qwaqwa) interest in the effects of fear on primate cognition. Dr le Roux collaborates with Dr Russel Hill of Durham University (UK) at the Lajuma Research Centre in Limpopo and Dr Nowak has subsequently been brought in to conduct the study.

Research on humans and captive animals has indicated that stress can powerfully decrease individuals’ cognitive performance. Very little is known about the influence of stress and fear on the cognition of wild animals, though. Dr Nowak will examine the cognition of wild primates during actual risk posed by predators. This is known as the “landscape of fear” in her research.

“I feel very privileged to be living at Lajuma and on top of a mountain in the Soutpansberg Mountain Range. We are surrounded by nature – many different kinds of habitats including a tall mist-belt forest and a variety of wildlife which we see regularly, including samangos, chacma baboons and vervet monkeys, red duiker, rock hyrax, banded mongooses, crowned eagles, crested guinea fowl and cape batis. And of course those we don't see but find signs of, such as leopard, genet, civet and porcupine. Studying the behaviour of wild animals is a very special, and very humbling, experience, reminding us of the diversity of life of which humans are only a very small part,” said Dr Nowak.

At present, the research team is running Giving up Densities (GUD) experiments. This represents the process during which an animal forsakes a patch dense with food to forage at a different spot. The animal faces a trade-off between meeting energy demands and safety – making itself vulnerable to predators such as leopards and eagles. Dr le Roux said that, “researchers from the US and Europe are embracing cognitive ecology, revealing absolutely stunning facts about what animals can and can’t do. Hence, I don’t see why South Africans cannot do the same.”

Dr Nowak received the Claude Leon Fellowship for her project. Her research as a trustee of the foundation will increase the volume and quality of research output at the UFS and enhance the overall culture of research. Her analysis on the effect that stress and fear have on wild primates’ cognition will considerably inform the emerging field of cognitive ecology.

The field of cognitive ecology is relatively new. The term was coined in the 1990s by Les Real to bring together the fields of cognitive science and behavioural ecology.


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