EXPERIMENTAL REPRODUCTION OF MUSCULAR DYSTROPHY IN DUCKLING MALLARDS THROUGH NUTRITION WITH DEFICIENT FEED SUPPLEMENTED WITH OXIDISED FAT

K. Stoyanchev, L. Lazarov

Abstract: The aim of this study was the experimental reproduction of muscular dystrophy in duckling - mallards through nutrition with a diet deficient in vitamin E, selenium and sulfur-containing amino acids, supplemented with oxidised fat in order to throw light on the etiopathogenesis, clinical signs, diagnosis, course, treatment and prognosis of the disorder. The experiments were conducted with 80 1 day-old duckling – mallards. By the 3rd day of life, they were divided into 40 experimental and 40 control duckling – mallards; the latter were fed a standard compound feed whereas the former group received a diet deficient, further supplemented with 4% oxidized fat containing peroxides and aldehydes with peroxide number of the food 8.0 meq O2/kg. The clinical signs of experimental muscle dystrophy in duckling – mallards appeared first by the 26th day of feeding, when the severe clinical form was established (25%) and by the e30th day, when the clinical course of MD increased by another 70%. The proportion of diseased duckling – mallards during the clinical period was the highest (95% severe clinical form). The 7-day treatment with Seled® at 0.06 mg/kg per os for compensation of Se deficiency and replacement of the deficient compound feed with a regular one resulted in better clinical status of duckling – mallards, but only to 3st day, not contributed to recovery of birds by the 32st and the 36st day after the therapy and the proportion of affected ducklings did not change until the end of the experiment. The percentage of deaded duckling – mallards by the end of the experiment was 26.3% of the total affected.

Keywords: deficient feed; duckling mallards; muscular dystrophy; oxidised fat

Date published: 2017-12-20