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					inspection, as the skin can have scratches that healed
before slaughter and do not indicate the development of                Scratches are the main defects in whole
internal inflammatory processes. These will only be seen               carcasses and depend directly on the
when the skin of the affected region is cut or removed.                contact between the birds.
Many bacteria have been associated to the development
of cellulitis, but E. coli is still the most common (Messier et
al., 1993; Peighambari et ai., 1995; Norton, 1997; Gomis          in cellulitis when high levels of zinc amino acid
et ai., 1997). E. coli isolated from cell u litis                 (Availa@Zn) and vitamin E (40 mg/kg and 48 IU,
lesions are more prone to produce similar lesions when            respectively) were used together in the diets.
compared to bacteria isolated from other infections, such
                                                                  An inadequate environment may also affect the
as aerosacculitis, and can occur at any age (Johnson et
                                                                  appearance of cellulitis. Generally, broiler houses have
ai., 2001).
                                                                  plastic side curtains which are less efficient at preventing
                                                                  external moisture from entering the house. In some
There are constant attempts to improve the incidence of
                                                                  Brazilian integrations, prizes are given to producers that
cellulitis by manipulating the diets because of the losses
                                                                  maintain the best quality litters, and this is achieved by
resulting from condemnation of cuts or whole
                                                                  constantly moving the bedding material. This procedure
carcasses. Downs et al. (2000) found a marked
                                                                  becomes limited when the birds are older and requires
reduction
                                                                  deep litter to be




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                                                                                                     CARCASS DEFECTS

				
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posted:4/2/2013
language:English
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