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 G.D. Butcher, J.P. Jacob, and F.B. Mather2 Respiratory Diseases There are many common and important diseases which can affect the respiratory system (air passages, lungs, air sacs) of poultry (see Table 1). Poultry refers to birds that people keep for their use and generally includes the chicken, turkey, duck, goose, quail, pheasant, pigeon, guinea fowl, pea fowl, ostrich, emu and rhea. Due to modern systems of management, usually with high poultry densities, these diseases are able to readily spread.

 Swine feed is one of the most important factors in the successful raising of pigs, whether it is one pig or 2000 pigs. Swine feed is 60 to 75 percent of the cost of raising a pig. This is why it is crucial for you to have a planned nutritional program. Supplying your pig or pigs with the proper nutrients on regular basis will allow your pig to reach market size in a shorter time while insuring healthy and efficient swine production.

Abstract Farm animals are exposed to zearalenone through the feed because of the widespread occurrence of this mycotoxin in cereals and clinical reproductive disorders due to mycotoxin effects are often reported in farm animal species. This review describes the metabolism, the mechanistic aspects, the clinical reproductive symptoms and the in vitro effects on functional parameters of oocytes and sperm cells induced by zearalenone and its derivatives in farm animals. The studies on in vitro effects allow to understand the action mechanisms of mycotoxins and, sometime, to explain the in vivo symptoms. The impairment of semen quality and female reproductive function induced by zearalenone could be a factor responsible for the reproductive failure in farm animals.