Bonsmara cattle now make up 45% of all beef births in South Africa, showing the lasting strength of Prof. Jan Bonsma’s science-led breeding work.

SOUTH AFRICA – South Africa’s most successful beef breed, the Bonsmara, continues to lead the national cattle industry more than 30 years after the death of its founder, Professor Jan Bonsma.
Developed in the 1930s through a rigorous process of crossbreeding, the Bonsmara now represents nearly half of all beef births in the country and plays a key role in both commercial and small-scale farming.
At the heart of the Bonsmara’s success is a method based on science, not appearance. “Early Bos taurus breeds imported from Europe and the US struggled with heat and humidity, while indigenous African cattle lacked good carcass quality,” says the Bonsmara SA Cattle Breeders’ Society.
Professor Bonsma addressed this by combining 5/8 Afrikaner, 3/16 Hereford and 3/16 Shorthorn genetics.
“This scientifically guided approach made Bonsmara unique as it was based on objective performance data rather than just visual selection or tradition,” researchers explain.
More than 120,000 Bonsmara cattle are currently registered in South Africa, with the breed now making up 45 percent of all beef births on record.
Commercial strength and genetic value
Bonsmara cattle are known for early maturity, veld adaptability and fast weight gain. According to the breed society, “All Bonsmara cattle are inspected before breeding age; those not showing good veld adaptability or functional efficiency are rejected or culled.”
These traits translate into strong economic performance. Weaner calves often reach market weight in just 112 days. Current data shows Class A producer prices for Bonsmara beef have reached R81.02 per kilogram, a 45.2 percent rise year on year.
Analysts estimate Bonsmara cattle “contribute nearly half (47.6%) of total gross income within certain sectors of agriculture related to red meat production.” Beef itself accounts for around 25 percent of South Africa’s agricultural GDP.
Feedlot tests show Bonsmara bulls perform well, producing high dressing percentages, good fat cover and marbling, traits valued in branded beef programmes.
Genetics, adaptation and new players
Genetic improvement tools such as BLUP (Best Linear Unbiased Prediction) and genomic selection are now used to boost accuracy and productivity. Bonsmara herds show strong genetic diversity, helping them adapt to heat and drought conditions.
While they have moderate tick resistance, they remain more vulnerable to tick-borne diseases than some indigenous breeds.
The breed’s reach now extends across the region, with herds in Namibia, Botswana, Zambia and Zimbabwe. In Zimbabwe, “at least seven registered Bonsmara breeders” manage a combined herd of around 650 animals.
Globally, the breed has expanded to countries like Brazil, the US and Australia, where climate conditions mirror those in southern Africa.
Afrino sheep on the rise
South Africa’s Afrino sheep breed is also showing strong growth. Developed for dual purpose use, it is made up of 25 percent Merino, 25 percent Ronderib Afrikaner and 50 percent South African Mutton Merino.
Afrino ewes lamb even during dry periods, produce 2.5 to 3 kilograms of wool yearly, and show clean yields of up to 70 percent.
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