| Popis: |
The objective of the present study was to evaluate the incidence and prevalence of lesions in the face of piglets and the subsequent effects on their performance. The treatments used were the maintenance and wear of incisors and canines. Evaluations were performed on the second and fourth day after birth and three times a week until weaning. The lesions were classified as type A and B. Conventional methods were used to analyze the zootechnical parameters and body temperature was measured in the ventral and dorsal region of the piglets, twice a day. The chi-square test was used to evaluate the effect of treatment on the prevalence of piglets with Type A and Type B lesions. Mean values of body temperature and weight gain per treatment were compared by Fischer Means Test. In relation to weight gain, a variance analysis was performed considering the location of the effects and the treatment. The percentage total lesions found in piglets in both treatments was 39.2%. Type B lesions accounted for 20.5%. Significant differences were found for the periods evaluated. In this study, severe lesions were found in piglets with teeth, however, the use of wear tooth is unnecessary, as there are lesions that occur in this practice due to poor management of piglets and sows during lactation. Female weight gain after farrowing and lactation was not affected by maintenance of intact teeth or by weaning, as well as gain of piglets after birth and weaning. However, for piglets at weaning, there was a trend, since the weight found at site I was higher than site II and III. It is concluded from the results of this study that tooth wear should be performed only when necessary. |
