All About Feed | Index | Ruminants - nutrient requirements

Nutrition's helping hand in health and fertility

Today's high yielding cow is commonly accepted to be less fertile and more susceptible to metabolic and infectious disease than her ancestors. It is important that we look at the logic and fact behind this, says John Newbold and reflect on some of the evidence that highlights the role of nutrition in improving these vital management factors.

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Milk – the perfect feed?

When it comes to modern dairy management, the heifer calf is still probably the most neglected animal on the farm. She shouldn't be, however, and international experts met recently in Nottingham to explain why.

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Make the most out of forage vitamin A

Vitamin A appears to be a critical aspect of feeding forage to ruminants. There are a number of factors to be taken into account to ensure that ruminants can best utilise such a valuable resource from forage.

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Lone voices in the BSE debate

As the BSE hysteria calms, some of the quieter voices are still audible. These are offering alternative explanations for the cause of the epidemic. Though research is still in its infancy, Czech scientist Dr Josef Hlásny firmly believes that scrapie-infected MBM was not the sole culprit.

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Know your minerals and prevent disease

Jargon like "chelation, bioavailability, magic bullet” and so on often makes proper understanding of true mineral nutrition more difficult than it needs to be. Regardless, feeding of minerals has extreme importance in the maintenance and production of healthy sheep and lambs.

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Vitamins improve dairy production

The economic benefits of proper vitamin nutrition in dairy cows, above those supplied for normal metabolism include increased milk production, reduced prevalence of mastitis, improved reproduction, reduced occurrence of milk fever and improved hoof health.

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Pioneering technology for protein nutrition in ruminants

Many trials have shown that the protein source in the diet of the dairy cow could have a marked influence on milk protein secretion. In practical ration formulation it is almost impossible to meet both the lysine and methionine constraints for high milk production (also meat production in beef animals and sheep) respectively from conventional raw materials alone.

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Fine-tuning ruminant phosphorus nutrition

Supplying dietary phosphorus to ruminants can be a wasteful business. We need to have better knowledge of how much dietary P from feedstuffs is available to the rumen, so that it contributes more to the animal and less to environmental pollution. New techniques are under development to predict how dietary P is partitioned in ruminants.

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Ideal concentrate feeds for grazing dairy cows

Grazing is a valuable, low cost resource for feeding high-yielding dairy cows. However, the balance between providing sufficient energy and managing grassland is delicate. Full exploitation of grazing systems to maximise milk yield requires that concentrate feeding is also optimised.

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Nutrient synchrony affects nutrient use in calves

Nutrient synchrony (or the distribution of nutrients within a day) affects protein, glucose and fat metabolism and can ultimately impact on the utilization of nutrients in preruminant calves, concludes PhD student Joost van den Borne at Wageningen University in the Netherlands.

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Meat International	Agriworld.nl
Worldpoultry.net	Pigprogress.net
International Milling Directory

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