Turning young bulls into productive herd sires
Farmer's Weekly|October 29, 2021
All beef cattle producers want their young bulls to develop into productive sires, but for this to happen, they need to manage these animals carefully. Annelie Coleman spoke to livestock nutrition specialist Dr Francois van de Vyver about how to achieve this.
Annelie Coleman
Turning young bulls into productive herd sires

FAST FACTS

  • As bulls mature, their nutritional requirements change from those for growth and development to those primarily for maintenance.
  • Young bulls need rations with a high level of crude protein to ensure optimal muscle development.
  • Environmental factors such as temperature and terrain affect the nutritional requirements of livestock, young bulls included.

Environmental factors, of which herd management forms an integral part, exert a 70% influence on the performance of an adult bull, whereas genetics account for only 30%. This means that the nutrition of young bulls is crucial to ensuring a top-performing adult animal, according to Dr Francois van de Vyver, national technical manager at Voermol Feeds. He warns, however, that putting young bulls on high-concentrate rations can be detrimental to their future fertility and soundness.

FEED FOR MUSCLE GROWTH

As bulls grow, their nutritional requirements change. Mature bulls use nutrients primarily for maintenance, whereas younger animals require nutrients to support growth, development and maintenance. Nutritional requirements must be met in full to develop growing bulls from weaning onwards, but feeding a young bull a high-energy diet after weaning will result in rapid weight gain, which can create a host of problems such as a reduction in semen quality. In addition, an excessively fat bull will be lazy and unhealthy.

Animals go through different phases of growth on the road to adulthood. “It’s therefore vital that animals are fed according to their nutritional demands at the different stages of tissue development,” explains Van de Vyver.

This story is from the October 29, 2021 edition of Farmer's Weekly.

Start your 7-day Magzter GOLD free trial to access thousands of curated premium stories, and 9,000+ magazines and newspapers.

This story is from the October 29, 2021 edition of Farmer's Weekly.

Start your 7-day Magzter GOLD free trial to access thousands of curated premium stories, and 9,000+ magazines and newspapers.

MORE STORIES FROM FARMER'S WEEKLYView All
ARC names best dairy producers of the year
Farmer's Weekly

ARC names best dairy producers of the year

The Agricultural Research Council (ARC) recently announced the winners of the 2024 National Master Dairyman Awards at an event hosted by AgriExpo in Stellenbosch, Western Cape.

time-read
1 min  |
December 06, 2024
Lion breeders to give up bone stockpiles?
Farmer's Weekly

Lion breeders to give up bone stockpiles?

The Ministry of Forestry, Fisheries and the Environment issued an official notice in mid-November in which it called on lion breeders to voluntarily hand over their lion bone stockpiles to the state as soon as possible.

time-read
1 min  |
December 06, 2024
Thousands of British farmers march on parliament against inheritance tax
Farmer's Weekly

Thousands of British farmers march on parliament against inheritance tax

Thousands of UK farmers gathered in London, England, on 19 November to demand the government repeal a proposed inheritance tax on agricultural land, which they argued threatened the future of family-run farms (see page 4), Al Jazeera reported.

time-read
1 min  |
December 06, 2024
Avocado frittata with sundried tomatoes, feta and olives
Farmer's Weekly

Avocado frittata with sundried tomatoes, feta and olives

This wholesome, vibrant frittata is perfect for brunch or a light supper. Recipe and photo: The South African Avocado Growers' Association.

time-read
1 min  |
December 06, 2024
Feed, hay, and other costs are up, so it's time to get creative
Farmer's Weekly

Feed, hay, and other costs are up, so it's time to get creative

Breeders and riding schools need to explore innovative ways to generate income in order to ensure their survival, says Dr Mac.

time-read
2 mins  |
December 06, 2024
How to make polystyrene seedling trays last longer
Farmer's Weekly

How to make polystyrene seedling trays last longer

While thinking about how to prolong the lifespan of polystyrene seedling trays that are exposed to harsh sunlight, Bill Kerr began to wonder if a coat of paint might offer a solution.

time-read
2 mins  |
December 06, 2024
Living the 'culture' in agriculture
Farmer's Weekly

Living the 'culture' in agriculture

Creation Wines has won numerous awards, was ranked fourth in the World’s Best Vineyards in 2023, and more recently won the V d’Or award for the Best Brand Experience. The owners, Carolyn and Jean-Claude Martin, spoke to Glenneis Kriel about how their winery became a top tourism destination.

time-read
10+ mins  |
December 06, 2024
Time to take a deep breath on the slopes of the Magaliesberg
Farmer's Weekly

Time to take a deep breath on the slopes of the Magaliesberg

Around 100km from both Johannesburg and Pretoria in Gauteng and a tad over 40km from Rustenburg in North West, Farmer’s Weekly found a fine retreat on a working farm where couples may kindle their romance.

time-read
5 mins  |
December 06, 2024
African penguins could be extinct by 2035 how to save them
Farmer's Weekly

African penguins could be extinct by 2035 how to save them

Protecting the critically endangered African penguin is good for the environment, other animal species, and the economy, say Lorien Pichegru and Dr Alistair McInnes of Nelson Mandela University, Katrin Ludynia of the University of Cape Town, and Peter Barham of the University of Bristol in the UK.

time-read
4 mins  |
December 06, 2024
An urgent need to confront Nassella in SA
Farmer's Weekly

An urgent need to confront Nassella in SA

South American grass species from the genus Nassella were unwittingly introduced to South Africa over 120 years ago and continue to invade montane veld. As Mike Burgess writes, research-based action is required.

time-read
3 mins  |
December 06, 2024