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18 June 2019 | Story Leonie Bolleurs | Photo Leonie Bolleurs
Dr Christine Engelbrecht from the Agricultural Research Council
Dr Christine Engelbrecht from the Agricultural Research Council presented the keynote lecture on climate dynamics, predicting that El Niños will double in frequency towards the end of the century.

The world will need nearly double the current food supply by 2050 to feed an ever-increasing world population. This is a mammoth, almost impossible task.

Building on knowledge

According to UFS Rector and Vice-Chancellor, Prof Francis Petersen, if we approach challenges such as these with scientific level-headedness, systematically build on knowledge and experience gained, and draw on similar inputs from other specialist fields, the seemingly impossible becomes possible.

“To what extent do we integrate our knowledge across sectors – within the university and outside the university; on the continent as well as globally?” he asked the 300-plus delegates, which included animal scientists, students, and various other role players in the livestock sector, at the 51st South African Society of Animal Science (SASAS) congress on the Bloemfontein Campus of the University of the Free State (UFS). 

Willingness to adapt to new strategies


The theme of this year’s congress was: Managing the ecological footprint of livestock through efficient production. The congress provided a platform for discussions on the impact of livestock production – bringing in elements of critical thinking, as well as the willingness to adopt new strategies. 

During the congress, workshops on topics such as silage, predation management, intensive sheep production, prickly-pear utilisation, and animal welfare provided delegates with the opportunity to discuss challenges faced by the South African livestock producer.

Dr Christine Engelbrecht (Meteorology) from the Agricultural Research Council presented the first keynote address, focusing on climate dynamics. 

“We have high-impact weather systems across Southern Africa. It is projected that strong El Niños are to double in frequency towards the end of the 21st century,” said Dr Engelbrecht. 

She further predicted temperature increases of between 4 and 7 degrees Celsius in the interior before the end of the century. Over the Free State, Northern Cape, and North-West Province, we can expect shorter frost seasons, significant increases in maximum temperatures for both summer and winter, as well as more frequent El Niño-induced droughts. 

Ecological footprint of food

Improved production outputs need to be achieved by using less land, water, and available energy, while ensuring that the degradation and pollution of natural resources are limited. A scientific approach would be a viable option to improve the efficiency of livestock production.

SASAS President, Prof Este van Marle-Köster from the University of Pretoria, pointed out that all food had an ecological impact.

Dr Frikkie Maré, Head of the Department of Agricultural Economics at the UFS, presented a keynote lecture on managing the footprint of beef through efficient production. Comparing the water footprint of different cattle breeds, his question was what could be done to reduce this. 

Animal welfare was introduced to the congress for the first time. Prof Cathy Dwyer from Scotland’s Rural College presented a session on, ‘Can animal welfare contribute to improved production efficiency?’

The oldest conception of animal welfare is the five freedoms adapted to the five welfare needs of animals, namely a suitable environment, a suitable diet, exhibiting normal behaviour patterns, being with or being apart from other animals, and protection from pain, injury, suffering, and disease. Studies demonstrate that animal welfare can be an important and effective part of production efficiency, and that animal welfare should be seen as an integral component of improving the sustainability of livestock. 

Prof HO de Waal from the Predation Management Centre at the UFS presented a session on the impact of predation on livestock production, with the tile: The need for coordinated predation management in South Africa – quo vadis? He said: “The current approach to predation management is fragmented and uncoordinated. Solutions for the management of human-wildlife conflict require a South African institutional memory. Most of the information on predation and the hunting of predators is held by specialist predator hunters and farmers. In a system of coordinated predation management, farmers and government are equal partners, each with specific responsibilities.”

News Archive

Stem cell research and human cloning: legal and ethical focal points
2004-07-29

   

(Summary of the inaugural lecture of Prof Hennie Oosthuizen, from the Department of Criminal and Medical Law at the Faculty of Law of the University of the Free State.)

 

In the light of stem cell research, research on embryo’s and human cloning it will be fatal for legal advisors and researchers in South Africa to ignore the benefits that new bio-medical development, through research, contain for this country.

Legal advisors across the world have various views on stem cell research and human cloning. In the USA there is no legislation that regulates stem cell research but a number of States adopted legislation that approves stem cell research. The British Parlement gave permission for research on embryonic stem cells, but determined that it must be monitored closely and the European Union is of the opinion that it will open a door for race purification and commercial exploitation of human beings.

In South Africa the Bill on National Health makes provision for therapeutical and non therapeutical research. It also makes provision for therapeutical embryonical stem cell research on fetuses, which is not older than 14 days, as well as for therapeutical cloning under certain circumstances subject to the approval of the Minister. The Bill prohibits reproductive cloning.

Research on human embrio’s is a very controversial issue, here and in the rest of the world.

Researchers believe that the use of stem cell therapy could help to side-step the rejection of newly transplanted organs and tissue and if a bank for stem cell could be built, the shortage of organs for transplants would become something of the past. Stem cells could also be used for healing of Alzheimer’s, Parkinson’s and spinal injuries.

Sources from which stem cells are obtained could also lead to further ethical issues. Stem cells are harvested from mature human cells and embryonic stem cells. Another source to be utilised is to take egg cells from the ovaries of aborted fetuses. This will be morally unacceptable for those against abortions. Linking a financial incentive to that could become more of a controversial issue because the woman’s decision to abort could be influenced. The ideal would be to rather use human fetus tissue from spontaneous abortions or extra-uterine pregnancies than induced abortions.

The potential to obtain stem cells from the blood of the umbilical cord, bone-marrow and fetus tissue and for these cells to arrange themselves is known for quite some time. Blood from the umbilical cord contains many stem cells, which is the origin of the body’s immune and blood system. It is beneficial to bank the blood of a newborn baby’s umbilical cord. Through stem cell transplants the baby or another family member’s life could be saved from future illnesses such as anemia, leukemia and metabolic storing disabilities as well as certain generic immuno disabilities.

The possibility to withdraw stem cells from human embrio’s and to grow them is more useable because it has more treatment possibilities.

With the birth of Dolly the sheep, communities strongly expressed their concern about the possibility that a new cloning technique such as the replacement of the core of a cell will be used in human reproduction. Embryonic splitting and core replacement are two well known techniques that are associated with the cloning process.

I differentiate between reproductive cloning – to create a cloned human embryo with the aim to bring about a pregnancy of a child that is identical to another individual – and therapeutically cloning – to create a cloned human embryo for research purposes and for healing human illnesses.

Worldwide people are debating whether to proceed with therapeutical cloning. There are people for and against it. The biggest ethical objection against therapeutical cloning is the termination of the development of a potential human being.

Children born from cloning will differ from each other. Factors such as the uterus environment and the environment in which the child is growing up will play a role. Cloning create unique children that will grow up to be unique individuals, just like me and you that will develop into a person, just like you and me. If we understand this scientific fact, most arguments against human cloning will disappear.

Infertility can be treated through in vitro conception. This process does not work for everyone. For some cloning is a revolutionary treatment method because it is the only method that does not require patients to produce sperm and egg cells. The same arguments that were used against in vitro conception in the past are now being used against cloning. It is years later and in vitro cloning is generally applied and accepted by society. I am of the opinion that the same will happen with regard to human cloning.

There is an argument that cloning must be prohibited because it is unsafe. Distorted ideas in this regard were proven wrong. Are these distorted ideas justified to question the safety of cloning and the cloning process you may ask. The answer, according to me, is a definite no. Human cloning does have many advantages. That includes assistance with infertility, prevention of Down Syndrome and recovery from leukemia.

 

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