Effect of different levels of oxytetracycline antibiotics on some intestine and immune traits of Chinese ducks

Abstract

This study was conducted in the field of poultry, Agricultural Research and Experiments Station, College of Agriculture, Al-Muthanna University, from 14/12/2021 to 14/2/2022. A total of Sixty one-day-old Peking ducks were reared, with an average weight of 42 g, to study the effect of adding different levels of oxytetracycline antibiotics at levels: 0, 0.125, 0.250 and T4 0.375% on some intestinal and immune traits of Chinese ducks. The results indicated a significant superiority remove on the relative weight and length of the small intestine with all its parts (duodenum, jejunum and ileum) for Chinese ducks when using the antibiotic oxytetracycline antibiotics, it was described as a growth stimulator compared to the control treatment. The addition of the antibiotic oxytetracycline antibiotics at high levels (0.375 mg/kg feed) led to a significant improvement remove of the immunological characteristics represented by the relative weight of bursa gland compared to the control treatment