Reversible control of reproduction in tom cats: medical options for manipulating libido and fertility.

J Feline Med Surg. May 2023;25(5):1098612X231171406.

Lluis Ferré-Dolcet¹, Stefano Romagnoli²

¹ San Marco Veterinary Clinic and Laboratory, Padova, Italy.; ² Department of Animal Medicine, Production and Health, University of Padova, Italy.

Abstract

BACKGROUND:There has been a growing interest in alternatives to surgery for controlling reproduction in tom cats, and the resultant medical options add to a practitioner's toolbox when handling these cases in clinical practice. It is important, however, that when suggesting these drugs, veterinarians have a good understanding of their mode of action, and their correct use and dosage.

CLINICAL RELEVANCE:Breeders increasingly wish to be able to switch on/off the reproductive ability of their tom cats in a controlled manner. In addition, in small animal medicine, there has been concern from some academics, and a growing number of pet cat owners, about potential long-term effects of surgical sterilisation. Further, for some cats surgical castration may not be possible due to health conditions that mean anaesthesia is unsafe. In all of these scenarios, medical alternatives to surgery can prove useful.

EQUIPMENT AND TECHNICAL SKILLS:No special equipment or technical skills are required. A good knowledge of the medical alternatives to surgical sterilisation for controlling reproduction in a tom, and making sure the patient is a suitable candidate, are, however, important for ensuring the cat's health during and after treatment and the owner's satisfaction.

AUDIENCE:This review is aimed principally (but not exclusively) at veterinary practitioners working with cat breeders who seek a temporary arrest in their tom cat's reproduction. It may also help practitioners with clients who would like an alternative to surgery or with cats where anaesthesia for surgical castration is not possible.

EVIDENCE BASE:Advances in reproductive feline medicine have resulted in improved knowledge of medical contraception. This review draws on scientific evidence-based papers that report on the mode of action, length of efficacy and potential side effects of different methods of medical contraception, as well as the authors' own clinical experience.

Keywords

GnRH agonists; GnRH antagonists; Medical contraception; deslorelin; immunocontraception; melatonin; progestogens;

Article Tools:

Medline

Email to me

Archives Highlights:

Owner satisfaction and prognosis for return to work after pancarpal arthrodesis in working dogs in the United Kingdom: a retrospective study (2011-2020).
50% (5/10) owners stated their dog could perform normal duties; 4/10 (40%) could perform most duties with some allowances. 80% (8/10) owners rated the level of post-operative lameness as unaffected with a normal gait. 90% (9/10) owners were either very satisfied or satisfied with the outcome of the procedure, and 90% owners stated the financial investment was worthwhile.

Performing an Avian Physical Examination in Practice
As with mammalian physical examinations, it is important to develop a consistent order for the avian examination to thoroughly evaluate each body system. Some components of the physical examination differ between avian species. For example, cloacal palpation is performed in chickens, but not in parrots.

Association between highly pathogenic avian influenza outbreaks and weather conditions in Japan.
We found that higher average air temperatures two to three weeks prior, lower average wind speeds four weeks prior, and longer sunlight hours two and four weeks prior to outbreaks were significantly associated with increased risk of HPAI outbreaks in Japan. These results suggest that weather may influence environmental survival and transmission of the virus, as well as patterns of wild bird movement that could seed new outbreaks.

Choose Your Own Adventure: Using Twine for Gamified Interactive Learning in Veterinary Anaesthesia.
Five interactive clinical cases were developed using Twine, simulating realistic anaesthesia scenarios with decision points and gamified elements, such as scoring systems and resource management. Feedback was highly positive; 90.8% found it effective for training, and 97.0% agreed it improved knowledge. User-friendliness was rated as "easy" or "very easy" by 94.6%. Regarding overall satisfaction, 96.7% of students described the workshop as "good" or "excellent".

Mass rabies exposure of veterinary health care workers in Germany: Management, immune response, and tolerability of post exposure-prophylaxis.
In 2008, Germany was declared free from terrestrial rabies by the WOAH. However, illegal pet imports can still lead to rabies exposure, as seen in the 2021 case of a rabid puppy illegally imported to Germany, resulting in a mass exposure (39 veterinary clinic staff) incident.