PMID: 8944799Dec 1, 1996Paper

Effects of prepubertal gonadectomy on physical and behavioral development in cats

Journal of the American Veterinary Medical Association
W P StubbsT J Lane

Abstract

To determine the effect of prepubertal gonadectomy on physical and behavioral development in cats. Prospective controlled study of kittens randomly assigned to 3 treatment groups: group 1, neutered at 7 weeks of age; group 2, neutered at 7 months of age; and group 3, sexually intact controls. 31 clinically normal male and female kittens. Age at distal radial physeal closure and mature radius length were determined radiographically. Six behavioral characteristics were recorded monthly. At 1 year of age, body weight was recorded and thickness of the falciform ligament was measured from a lateral abdominal radiographic view. Secondary sex characteristics were also examined at 1 year of age. There were no differences between group-1 and group-2 cats for any of the study variables. Sexually intact cats (group 3) weighted significantly less than group-2 cats and had less falciform fat and earlier distal radial physeal closure than cats of both neutered groups. Group-3 cats manifested greater intraspecies aggression, less affection, and greater development of secondary sex characteristics than neutered cats. Neutering cats at 7 weeks of age had similar effects on physical and behavioral development, compared with neutering at the more...Continue Reading

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