Programas preventivos com antibióticos para suínos em fase de creche e efeitos no desempenho, características de carcaça e índices sanitários

AUTOR(ES)
DATA DE PUBLICAÇÃO

2008

RESUMO

The use of "pulses" or "shocks" with antibiotics has been recommended and widely used throughout the production chain from pigs in Brazil. Accordingly, the objective of this study was to identify the best preventive program with antibiotics waived at the stage of nursery, which has effects consistent and lasting until the slaughter, reducing potential for loss by the main respiratory and enteric diseases at the nursery, growing and finishing phases.The work was conducted in an agribusiness Cooperative at the west Parana State which has a production unit of piglets with 5,200 females. 1920 piglets were used (half male, half female), commercial hybrids of the same gene, newly weaned, with average weight of 13 kg and 42 days old. The piglets were housed in units of commercial nursery, pens with collective capacity to 40 animals, plastic floor, automatic feed and water fountains type nipple. All animals received water and feed at will. The piglets were divided into 3 treatments with 640 animals each and were housed in 16 pens of 40 animals. 3 treatments were defined experimental distributed each in a room, nursery, where: T1-tiamulina 3.5% (70mg/liter)+ HCl oxytetracycline 10% (200 mg/ liter) run through in drinking water for 1 to 5 days and between 20 to 25 days after weaning, T2 – valomicina (35 mg/kg) + chlortetracycline calcium complex (300 mg/ kg) taught via diet for 20 to 37 days post weaning, and T3 - free of medication. Throughout every stage of nursery groups received colistin sulfate (110 ppm) via diet for E.coli control. Were analyzed the data of the daily feed intake, daily weight gain and feed conversion. The growing and finishing period, rates of cough and sneeze and diarrhea scores wore analyzed. Finally the animals were slaughtered and their carcasses weighed and analyzed by electronic evaluation with SKF equipment, using the Hennessy Trading Probe program. The lungs samples were evaluated individually to verify the percentage of injuries in pieces. No differences were observed among treatments to the characteristics of performance and carcass, coughing, sneezing and pulmonary lesions. These characteristics are suggestive that the health status of the farms had high standard. It can be concluded that in situations of low challenge, the use of antibiotics in associations submitted did not result in an immediate improvement in the phase of nursery and neither positive repercussions at the growing and finishing.

ASSUNTO(S)

antibióticos na nutrição animal suíno - crescimento antibiotics in animal nutrition swine - growth

ACESSO AO ARTIGO

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