Its very short but backs up the LSU study I found. In order to determine the toxic levels 2 of the ladies did pass.
It seems pretty safe to say that lidocaine is not, by its very nature, toxic to chickens.
In summary:
Animals: Eight healthy, female, 55-week-old chickens (Lohman breed) weighing 1.45 ± 0.17 kg (mean ± SD)
Procedure: A loading dose of 2% lidocaine (4 mg/kg) was administered IV, followed by a constant-rate infusion at a dose of 8 mg/kg/min using a syringe pump. Times to onset of convulsion and/or respiratory arrest were recorded and the total toxic dose of lidocaine was determined. Blood sample was withdrawn for lidocaine analysis at the onset of the major signs of intoxication (convulsion or respiratory arrest).
Results: The total toxic dose of lidocaine required to produce systemic toxicity and corresponding serum lidocaine concentration were 28.96 ± 6.21 mg/kg and 38.5 ± 10.4 µg/mL, respectively.
Conclusions and clinical relevance: Based on the results of this study, greater doses of lidocaine are needed to produce toxic manifestations in chickens as compared with mammals.
Lifocaine levels & Symptoms: The doses of lidocaine required to induce the following symptoms.
- Panting: 16.02 +/- 5.13 mg/kg
- Convulsion: 30.86 +/- 6.26 mg/kg
- Respiratory arrest: 27.06 +/- 6.42 mg/kg
Of the 5 chickens that reached the respiratory arrest stage, after stopping the lidocaine, 2 recovered spontaneously, and a third recovered after chest compressions.
