The use of long-acting neuroleptics, perphenazine enanthate and pipothiazine palmitate in two horses.

This research investigates the effect of two types of long-acting neuroleptics on two Arabian horse stallions with behavioral problems. The neuroleptics, when administered, facilitated the corrective training of the horses, with varying side effects.

Introduction

• The study focuses on two Arabian horse stallions expressing behavioral problems, making corrective training difficult.
• The researchers decided to explore the impact of long-acting neuroleptics to mitigate these issues and aid in training.
• The neuroleptics used were Perphenazine enanthate and Pipothiazine palmitate.

Methodology and Findings

• Perphenazine enanthate was administered intramuscularly at a dose of 0.5 mg kg-1. Its impact lasted for about 30 days.
• Pipothiazine palmitate was administered at a dose of 1 mg kg-1, inducing 30 days of tranquilization.
• However, Pipothiazine palmitate elicited unwanted clinical signs, resulting in ataxia (lack of muscle control or coordination) and aphagia (difficulty swallowing or inability to swallow).
• This specific tranquilizer also induced extra-pyramidal clinical signs, which are symptoms related to the brain’s extrapyramidal system, the part of the brain that modulates motor activity.

Side Effects

• Despite the various effects of the neuroleptics, neither horse showed prolapse of the penis or haemolysis (the rupturing of red blood cells and the release of their contents into the surrounding fluid).
• This suggests that while the tranquilizers were effective at easing behavioural issues for training purposes, they were not without their negative impacts.

Conclusions and Further Research

• The conclusion emphasizes the potential of these long-acting neuroleptics as a tool in training horses with behavioural problems.
• However, the side effects caused by Pipothiazine palmitate indicate that dosages and specific drugs used should be carefully considered.
• Additional research may be necessary to further explore the effects of these neuroleptics and find the optimal balance between therapeutic effect and side effects.