The aim of the present study was to detect the tilmicosin residues in muscles, kidneys and liver of broiler chickens and to investigate its impact on both cardiac enzymes and some hematological parameters. Seventy broiler chickens were divided into two groups; the first was left as a negative control. The second group was given tilmicosin orally (30 mg/kg BW) once/day for three successive days. Reversed phase-high performance liquid chromatography (RP-HPLC) with UV detector at 287 nm and solid phase extraction were used for detecting drug residues in tissue samples. Results indicated a widespread distribution of tilmicosin in most tested tissues. All tissue samples were considered tilmicosin free at the 9 th day after the last oral dose except liver. Tilmicosin elicited a significant reduction in red blood cells count, hemoglobin concentration, packed cell volume, lymphocytes and eosinophiles. On the other hand, heterophiles count and the mean corpuscular volume were increased significantly. White blood cells, monocytes, mean corpuscular hemoglobin and mean corpuscular hemoglobin concentration showed non-significant changes. Levels of all cardiac enzymes (Aspartate aminotransferase, lactate dehydrogenase, creatine kinase-MB and Troponin I) were high.
The current study was conducted on multiple oral doses (40 mg/kg for 3 successive days) of florfenicol (FF) to determine its effect on some hematological parameters, cardiac enzymes and its residues in blood and tissues (liver, muscles and kidneys) of broiler chickens. Seventy broiler chickens were used and divided into two groups, each consisted of 35 birds. The first group was left as a control, while the second was given FF for 3 successive days. The FF residues in tissues were determined using reversed phase-high performance liquid chromatography (RP-HPLC) with ultraviolet (UV) detector at 223 nm. Results indicated a widespread distribution of FF in most of the tested tissues. All tissue samples were considered FF free on the 9 th day after the last oral dose except liver. Florfenicol administration elicited a significant decrease in all blood parameters (hemoglobin concentration (Hb), red blood cell count (RBCs), mean corpuscular volume (MCV), mean corpuscular hemoglobin concentration (MCHC) and lymphocytes) from 1 st up to 7 th day except packed cell volume (PCV) which showed no significant change on 1 st day but decreased on 3 rd , 5 th and 7 th day after stopping medication. Moreover, monocytopenia was observed on the 5 th and 7 th day and white blood cells (WBCs) showed the same effect on the 5 th day, while heterophiles revealed highly elevation. All cardiac enzymes (aspartate aminotransferase (AST), lactate dehydrogenase (LDH), creatine kinase MB (CK-MB) and Troponin I) were highly elevated. In conclusion, broiler chicken meat can be consumed safely after 9 days post FF treatment.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.