作者: S L Scruggs , K R Salmeri , V Shille , M S Bloomberg
DOI:
关键词:
摘要: In a 15-month study, the effects of prepubertal gonadectomy on skeletal growth, weight gain, food intake, body fat, secondary sex characteristics, and behavioral development were investigated in 32 mixed-breed dogs. Male female pups from 5 litters randomly allotted to 3 groups: group I, neuter at 7 weeks (n = 14); II, months 8); III, sexually intact dogs 10). Growth plate closure was delayed (group I vs III; P less than 0.000001; II 0.000001) all neutered dogs, as compared with longer 0.000045) old, old. The rate growth unaffected by gonadectomy, but extended period resulted greater final radial/ulnar length male bitches weeks. Gonadectomy did not influence or back-fat depth. Penile immature adult group-I males (mean +/- SEM diameter pars glandis 11.1 1.0 mm), group-II (16.3 0.5 mm) group-III (21.0 2.2 males. Subjectively, prepuce os penis immature, those Vulvar mature vulvar bitches. Of characteristics assessed, only general activity excitability rated differently among treatment groups. All judged be more active 0.004) Group-I excitable (P 0.02) It concluded that respect skeletal, physical, development, effect neutering old similar