Clinical symptoms of lack or excess of nutrients in feed

The knowledge about the nutritional requirements of pigs and the nutrient content of different feed ingredients is now quite abundant, which significantly reduces the frequency of nutritional problems. However, the problem of dietary nutrient deficiency still appears from time to time. These problems can be examined in four major areas: energy, protein, vitamins and minerals. Although most of the problems are caused by lack of nutrients, excess nutrients can also cause problems.

This article is based on the book "Pig Health Management and Swine Disease Treatment," co-authored by Mike Muirhead and Tom Alexander.

Fig. 2-14 and Fig. 2-15 list the symptoms of deficiency and deficiency of nutrients. A common symptom of vitamin deficiency is poor growth performance, but many other causes also cause this symptom.

The lack of mineral elements is not uncommon nowadays, especially for the rapidly growing modern breeds, and it is very difficult to meet the nutritional needs during the lactation period.

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