Importance of OVN

Vitamins play crucial roles in both human and animal nutrition and the new concept of OVN is essential in this modern era of farming.

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Poultry Breeders

Animals selected for breeding purposes require specialized attention, precise management practices and a diet of high nutritional quality...

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Laying Hens

Commercial egg-laying strains have changed a great deal in a few years. Logically, these changes in themselves should call for increased nutritional requirements in general, and in particular, increased vitamin requirements...

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Broilers & Turkeys

Broiler and turkey diets need to be supplemented with vitamins as the primary materials do not contain them in sufficient quantities.

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Most recommendations for vitamins in swine nutrition are based on studies carried out several decades ago. There are several reasons to suggest the need to update the guidelines and these are covered in this chapter focusing on swine nutrition...

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Beef Cattle

Recommendations for vitamin levels in beef herds has been completely reviewed in this chapter, with the purpose of supplying vitamin levels appropriate to this group of animals...

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Dairy Cattle

The increase in productive yield of the dairy cow has revealed a series of production problems which, in recent years, have enabled deficiencies of some vitamins to be identified. This chapter updates best practice.

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B. Isabel
A. I. Rey
C. López Bote

Department of Animal Production Faculty of Veterinary Science Complutense University 28040 Madrid, Spain

OVN in Pigs


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Most recommendations for vitamins in swine nutrition are based on studies carried out several decades ago.

The question of revising these values is often discussed, although this is a topic that raises some controversy due to the fact that in some cases the information available is unclear and that commercial interests may at times make the actual need to update recommendations seem less than credible.

Nevertheless, from our point of view, there are several reasons to suggest the need to review recommendations for vitamins (and other nutrients) for swine periodically. These are all covered in this chapter.

Contents: OVN in pigs

Vitamin A
Vitamin D
Vitamin E
Vitamin K
Thiamine (vitamin B1)
Riboflavin (vitamin B2)
Pantothenic acid
Pyridoxine (vitamin B6)
Vitamin B12
B-complex vitamins: individual or collective recommendations
Vitamin C