Role of Egyptian powdered date palm kernels and probiotics in alleviating degradation induced by Doxycycline misuse in broilers

Abstract

Date palm kernel powder (DPKP) and Saccharomyces cerevisiae yeast (SCY) enhance poultry health and meat production. Antibiotic misuse in broilers has negative consequences. To show the ability of DPKP and SCY feed additives in alleviating degradation induced by doxycycline misuse in broilers. Five groups of fifteen chicks started on the ninth day and lasted until 42 days of their life. At the end, all birds were weighed, muscles were collected after euthanasia. and the meat samples was frozen at -20°C for residue measurement. Another part was refrigerated at 4±1°C for microorganism detection, and biochemical indices were tested on 0, 3rd, 7th, and 9th days after refrigeration. The Doxycycline-treated group showed a non-significantly higher mean total colony count, increased mean Doxycycline residue by 100%, 60.63%, 65.7%, and 100%, and decreased mean end body weight by 11.38%, 21.2%, 20.25%, and 12.3% compared to the control, Doxycycline (Doxy) + DPKP, Doxy + SCY, and SCY-treated groups, respectively (P < 0.001). Nonetheless, the Doxy + DPKP, Doxy + SCY, and SCY-treated groups showed significant increases (P <0.001). Compared to the Doxy-treated group, all treated groups had lower Enterobacteriaceae counts (P <0.001). The psychoactive count greatly increased in the Doxy + SCY and SCY groups, dramatically decreased in the Doxy-treated group when compared to the control and Doxy + DPKP-treated groups. Staph count was higher in the Doxy-treated groups than in the control. Staphylococcus aureus or Pseudomonas aeruginosa were not isolated. On the third day of refrigeration, the Doxy-treated group had higher TVBN and pH than the other treated groups. It could be concluded that SCY and DPKP reduce doxycycline degradation in broiler feeds while maintaining meat quality.