Abstract
Backyard productive units are a family economy support, however, lack of good practices in livestock raising may favor dissemination of illness; this study was intended to determine the presence of infective phases of gastrointestinal parasites that affect swine. For which visits to 28 backyard farms, placed in Nuevo Leon, which conferred permission to take samples of drinking water destined to raise animals. Samples were processed to obtain a sediment wich was processed by a flotation technic using Sheater solution. A total of 5 positive simples were obtained, in wich the presence of Ascaris lumbricoides, Toxocara spp., Capillaria spp., Trichuris spp., Parascaris spp., coccidias and Strongylida order parasites were detected. There is, in a low percentage, the presence of the infectious phases of gastrointestinal parasites in drinking water for swine living in backyard farms in Nuevo Leon.
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