الفهرس 
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Abstract
1— A total number of 3360 rabbits of various breeds1 ages and sexes in Egypt, were seasonally examined during the Year 1989 for mange mites infestations. 2— Out of the total number examined 580 (17.3%) were infested
with Saracoptes scabiei, 220 (6.5%) were infested with Psoroptes cuniculi, as well as 276 (8.2%) were infested with both species. 3— Results proved that breed of the rabbits played a role in the incidence of infestation with mange mites. 4— Seasonal incidence of mange mites infestation has undergone variation, the highest incidende was noticed during winter while the lowest one was observed in summer. In the spring and autumn the incidence was nearly the same and relatively high. Mites preferred colder months and
rabbits remained vulnerable to infestation allover the year. 5— The prevailing temperature as well as the relative humidity under which rabbits are kept play an important role in the seasonal incidence of mange mites infestation
in rabbits. Low temperature and high R.H. in winter led to high infestations in contrast to summer with high temperature and low R.H. 6— The most preferable sites for sarcoptic mange were ear surface, toes, lower parts of legs, around the nose and eyes, head and lips, while for psoroptic mange was the ear canal. 7— Mange mites infestation appeared to propagate mostly on
young rabbits than aged individuals, highly susceptible age for infestation was 4 months. 8— Hygienic state of rabbitries played a role on the incidence rate and dissemination of mange mites, lower incidence was observed in ideal rabbitries and higher incidence in poor hygienic ones. 9— Acaricides used for control of mange mites infesting rabbits were ivomec, sebacil. neocido]., malathion. Triatix and bayticol, in addition to miscellaneous insecticides as
benzanil 25%, sulphur ointment 8%, alcoholic saturated sol. of magnesium sulphate and formic acid. 10— Efficacy of the acaricide varied according to the dose used and route of administration Economic maximum efficacy was attained by 1/N injection of 400 ug/Kg. body weight ivomec, hence injection was better than oral administration and 1/M injection than S/C one. 11— Controlling mange mites infesting rabbits, the more efficient acaricides used were ivomic, neocidol and sebaci 1 12- Unreliable acaricides unable to reach 100% efficacy were triatix, malathion and miscellaneous insecticides as benzanil 25%, sulphur ointment 8% and alcoholic saturated solution of magnesium sulphate. 13— Acaricides failed in control were formic acid and bayticol 14— Scraping mange lesions before acaricide spraying was
non—significant from statistical analysis, but slightly increased the efficiency of the acaricide. 15— Remedication of the acaricide and repeated treatment of miscellaneous insecticide highly improved acaricidal efficacy. 16— Rabbits treated with ivomec at lower doses (200 ug/kg) for control of Sarcoptes scabiei probably should be isolated from unprotected rabbits for longer than 3 days to prevent possible transfer of infestive mites, there is no need for isolation with higher doses (400 ug/kg) of ivomec therapy, but isolation more prolonged than 9 days in neocidol (0.1%) medication. 17— Formic acid had lethal effect on isolated mites in vitro. Killing of all mites after 24 hours exposure to 98% and 85% concentrations of formic acid vapour, as well after
48 hours at 70% and after 3 days at 50%. 18— In vitro both Sarcoptes scabiei and Psoroptes cuniculi survived off their hosts for longer time at low environmental temperature and higher relative humidity than at high environmental temperature and low relative humidity, as well as Psoroptes cuniculi survived slightly longer than Sarcoptes scabici at the same environimental conditions. 19— Spraying of rabbitries and inanimate objects concurrently with control of mange mites infested rabbits lead to
complete eradication of mites. 20— Changing periodically of the acaricides and strict use at recommended dilution and dose are needed to avoid
resistant strains of mites.