Toxocara canis, cynomolgus macaques (exper.), visceral larva migrans, hematologic and serologic changes, neurologic signs, diminished growth rates, diagnostic antibody titers in enzyme-linked immunosorbent assay, severe granulomatous hepatitis and encephalomyelitis, no ocular lesions, basis for clinical interpretation and diagnosis in humans

We studied 6 singly caged adult female rhesus monkeys to determine whether increased cage size had any effect on behavior or heart rate. Two monkeys at a time were placed in cages 40% larger than their standard cage for 1 week on 2 occasions, using a counter-balanced design. Direct behavioral observations were performed 75 minutes/week on each monkey. Heart rate and general activity were monitored 35 hours/week by a telemetry system. Statistically significant differences were not found in aggressive, submissive, abnormal, or self-abusive behavior, nor in time spent in the front half of the cage, duration of grooming, looking at the observer, or stereotyped or nonstereotyped locomotion. Vocalizations increased the first time in the larger cage, but not the second, and decreased upon the second return to the standard cage. Differences with respect to cage size were not found in heart rate or activity level, although there were significant variations at different times of day. We conclude that modest increases in cage size are unlikely to enrich the environment of singly caged laboratory primates.

The first pilot study of Nonsurgical castration of male long tailedmacaque was carried out in the middle of 2010 in Taman Tasik Perdana (National Lake Garden) in Federal Territory Kuala Lumpur. Intraepididymal injections method such as chemical castration wasused as one of the fertility control in adult male long tailed macaques. This method does not require removal of the testis, easy to do and inexpensive and mixture of Ethanol-Formalin was used inthis technique. Outcome from the male macaque castration programme shows this sterilization technique using a mixture of ethanol and formalin to be very effective in controlling new birth. Castrated male macaque doesn’t have any changes in behaviour or physical attributes. These results prove that the breeding of macaques can be reduced.