Gastrointestinal diseases of nursery pigs

With the advent of early weaning, gastrointestinal diseases of pigs have in creased in significance and severity because of the need for land lack of) excellent management, a proper living environment, and correctly formulated diets. All of these factors are particularly important as passive immunity to a number of gastrointestinal microorganisms expires during the nursery period. Colibacillosis continues to be the leading cause of diarrhea in ear ly weaners, frequently in combination with such viral agents as transmissib le gastroenteritis virus or rotavirus. Large production systems require mas s medication using antibiotics and electrolytes frequently administered via water.