Zobrazeno 1 - 10
of 39
pro vyhledávání: '"Joyce A. Devaney"'
Publikováno v:
Journal of Economic Entomology. 85:144-149
The effects of low levels of both biting and sucking lice, a mixed population of nematodes, and a combination of all these parasites were evaluated in calves held in a barn with no environmental controls in central Texas. Observations at 122 sites on
Publikováno v:
International journal for parasitology. 22(3)
Efficacy of ivermectin on susceptible or resistant populations of the parasitic nematode Haemonchus contortus was determined in cattle and goats held in a barn. Goats were each infected with 3000 infective, ivermectin-susceptible or -resistant H. con
Publikováno v:
Journal of economic entomology. 83(4)
Laboratory studies were conducted to determine the effects of horn fly, Haematobia irritans (L.), and house fly, Musca domestica L., larvae on the development of a mixed population of parasitic nematodes in compressed and crumbled bovine dung. Fresh
Autor:
Joyce A. Devaney
Publikováno v:
Veterinary Parasitology. 18:289-295
Recent research on methods for controlling the northern fowl mite (NFM) on caged laying hens is reviewed. On inanimate objects, NFM may be controlled by fumigation with methyl bromide, increased temperature (49 degrees C for 1 h), or decreased temper
Autor:
Joyce A. Devaney, Shirlee M. Meola
Publikováno v:
Journal of Invertebrate Pathology. 28:195-201
Despite current theory that fungi of the order Laboulbeniales are not injurious to their hosts, we found that Trenomyces histophtorus, a parasite of Mallophaga, invaded the body cavity of its host and produced an extensive rhizomycelium that resulted
Publikováno v:
Poultry Science. 62:43-46
Field studies were conducted to determine the efficacies of methyl bromide and sulfur dioxide as fumigants for northern fowl mite, Ornithonyssus sylviarum (Canestrini and Fanzago), on egg flats and egg cases. Both fumigants killed the mites within 24
Publikováno v:
Poultry Science. 61:2327-2330
Arkansas B1B1R, B2B2R, and B3B3R regressor lines, Arkansas B1B1Pr, B2B2Pr, and B3B3Pr progressor lines, and Giant Jungle Fowl were infested simultaneously at 28 weeks of age with northern fowl mites. The chickens were maintained in similar environmen
Publikováno v:
Poultry Science. 61:1630-1636
Aqueous suspensions of malathion, stirofos, Ravap, and carbaryl formulations (.25 to 1.0%) were tested as dips for control of the northern fowl mite (NFM), Ornithonyssus sylviarum (Canestrini and Fanzago), on caged White Leghorn hens. Hens treated wi
Publikováno v:
Poultry Science. 63:1327-1332
Pullets were infested with northern fowl mites (NFM), Ornithonyssus sylviarum (Canestrini and Fanzago), at 12, 16, 20, 24, and 28 weeks of age to determine the best age for infesting hens to obtain uniform heavy NFM populations and to determine if NF
Autor:
Joyce A. DeVaney
Publikováno v:
Poultry Science. 55:430-435
When 23-, 35-, and 49-week old Ideal 236 White Leghorn hens were infested with the chicken body louse, Menacanthus stramineus, percentage egg production 12 weeks later had decreased by 16, 34, and 46%. Meanwhile, the average hen weight had decreased