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25 January 2024 | Story Leonie Bolleurs | Photo Sonia Small
Prof Corinna Walsh
Prof Corinna Walsh says the PEA POD Infant Body Composition System works by directly measuring an infant’s body weight and volume, and then uses these measurements to calculate the body fat percentage, fat mass, and fat-free mass.

Nutritional and growth patterns during early life have been associated with health, development, and well-being throughout the life cycle. It is also associated with risks for developing obesity and non-communicable diseases, such as cardiometabolic diseases, later in life. These are the findings of Prof Corinna Walsh, Professor in the Department of Nutrition and Dietetics.

Maternal and child health

”In line with national priorities, a strong research focus area of the Faculty of Health Sciences and the School of Health and Rehabilitation Sciences is maternal and child health,” she says. She goes on to mention that the Department of Nutrition and Dietetics has established a reputable research programme. This programme focuses primarily on the nutritional status of pregnant women and how the early environment to which they are exposed during and after pregnancy affects short- and long-term health outcomes of the offspring.

“In our previous work, the assessment of birth outcomes of infants was, however, limited by the lack of equipment to analyse body composition. The research that we can conduct with the PEA POD® provides us with immense additional potential,” remarks Prof Walsh.

She explains, “The PEA POD Infant Body Composition System is an infant-sized air displacement plethysmography system. It works by directly measuring an infant’s body weight and volume, and then uses these measurements to calculate the body fat percentage, fat mass, and fat-free mass.

According to her, the assessment of body volume takes two minutes. “The PEA POD technique also does not require collection of any fluids and does not expose the infant to radiation. It can be performed as often as required without any risks and be used up to a maximum of 8-10 kg body weight, from birth to about eight months,” she says.

Advanced technology

In the context of research on infant body weight and composition, there is a need for accurate measurement techniques that can differentiate between fat mass and fat-free mass. Prof Walsh is of the opinion that traditional measures such as body mass index (BMI) and weight for length have limitations in this regard, as they do not provide a clear distinction between these components. Furthermore, BMI may not be reliable for assessing adiposity or obesity in paediatric populations, and it can vary significantly with age and gender.

Addressing these challenges, the PEA POD equipment offers advanced technology that allows for highly accurate quantification of infant body composition. This technological capability opens up opportunities to study the effects of early-life nutrition on growth and the developmental mechanisms that may lead to later comorbidities. So, when it comes to researching infant body weight and composition, the PEA POD equipment plays a crucial role in providing precise data and insights.

News Archive

Inaugural lecture: World on verge of agricultural revolution
2008-05-19

A changing economic climate and new technology will see to a number of interesting changes in the livestock industry in the next few years. This is according to Prof. Frikkie Neser of the Department of Animal and Wildlife and Grassland Sciences, who delivered his inaugural lecture at the UFS on the subject: “The quest for a superior animal”.

Prof. Neser focused on the future of animal breeding in the next few decades.

He said the world, but especially South Africa, stand on the verge of a revolution in the agriculture sector. The whole production scenario will probably change. The high fuel and food prices are the two biggest factors that will play a role.

“Increasing fuel prices opened the door for the production of bio-fuel. The fuel industry is in direct competition with humans and the livestock industry for the same resource that result in unbelievable high prices for maize, sunflower and soya. These prices can further increase with the worldwide shortage of food,” he said.

More profitable breeds could take the place of existing breeds because of the big increase in input costs, he said. “Selection for more effective, and not maximum production, will became more important.

“There are also indications of pressure on feed lots. If this industry downsizes, it could lead to a total turnaround in the beef industry. The feed lots prefer a later maturing animal that can put on a lot of weight before fat is laid down. If this industry declines, early maturing breeds and some of the synthetic breeds, as well as crossbreeding with early maturing breeds, will play a more prominent role in the meat industry.

“This will also lead to a decline in the total number of animals in order to prevent overgrazing. This can result in an increase in imports from neighbouring countries and especially Brazil, where production costs are much lower.

“One way to increase the profitability of meat production is to utilise niche markets. There is world-wide a shift to more natural products. The demand for grass-fed beef drastically increased. According to research it is healthier than meat from feed lots and usually free of hormones and antibiotics. If factors such as traceability are put in place, this could be a very profitable niche mark for the South African meat industry,” he said.

Prof. Neser also said: “In order for breeding societies to survive they need to increase the number of members and the animals that are being registered. This they do by replacing the word stud with recorded animals. Hereby they open the door for excellent commercial animals to become part of the seed-stock industry. Another benefit is that especially in the smaller breeds more information becomes available, resulting in more accurate breeding values.”

Prof. Frikkie Neser.

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