jordan He - Academia.edu (original) (raw)
Papers by jordan He
Javma-journal of The American Veterinary Medical Association, 1993
Prevalence of endoparasites (particularly ascarids) in dogs examined at the Oklahoma State Univer... more Prevalence of endoparasites (particularly ascarids) in dogs examined at the Oklahoma State University veterinary medical teaching hospital during 1981 to 1990 was determined by fecal and blood examinations. Approximately 1,250 fecal and 900 blood specimens were examined each year. In 1981, 55% of dogs harbored 1 or more parasites, compared with 36% in 1990. Percentages of all endoparasitic species decreased, except Giardia spp, which increased. The greatest decrease in prevalence was for Ancylostoma spp, which changed from 39% in 1981 to 15% in 1990. Prevalence of Toxocara spp and Trichuris spp also significantly decreased from 1981 (8% and 12%, respectively) through 1990 (4% and 9%, respectively). Although there appeared to be a downward trend in these ascarid infections, considerable environmental contamination probably existed and continues to exist because of high fecundity and long survival of eggs in the environment. Prevalence of Dipetalonema spp had a downward trend from a h...
Veterinary medicine, small animal clinician, 1974
Javma-journal of The American Veterinary Medical Association, 1956
Surgery gynecology & obstetrics, 1947
Modern veterinary practice, 1984
In a 2-year study of 49 Oklahoma cattle with a typical history of clinical endoparasitism, 12 ani... more In a 2-year study of 49 Oklahoma cattle with a typical history of clinical endoparasitism, 12 animals had Ostertagia only, and Ostertagia was the predominant endoparasite in 21. Only 1 animal had a pure Haemonchus population. Though primary endoparasitism was diagnosed antemortem in 32 animals, postmortem worm counts confirmed the diagnosis in only 19. Worm counts documented inapparent disease in 8 animals. In 21 cases of suspected of toxicosis, 12 animals had endoparasitism none was poisoned.
Veterinary medicine, small animal clinician, 1967
Javma-journal of The American Veterinary Medical Association, 1957
American journal of veterinary research, 1977
Studies on effects of subclinical parasitism (low worm burden) in full-fed and maintenance-fed st... more Studies on effects of subclinical parasitism (low worm burden) in full-fed and maintenance-fed steers indicated that over a short interval low worm burdens do not have a statistically significant effect on the efficiency of energy utilization. In full-fed steers, energy retention tended to be higher in steers with lower worm burdens (mean 95.8 Ostertagia, 12.5 Cooperia) than in those with higher worm burdens (mean 677.5 Ostertagia, 201.8 Cooperia). Maintenance-fed steers generally had larger numbers of Ostertagia ostertagi and Cooperia spp than did the full-fed steers.
Veterinary medicine, 1951
Bulletin of the Pan American Health Organization, 1974
The Journal of Parasitology, 1965
Monodonttis louisianensis sp. n. (Nematoda: Ancylostomatidae), a hookworm from the small intestin... more Monodonttis louisianensis sp. n. (Nematoda: Ancylostomatidae), a hookworm from the small intestine of Odocoileus virginianus (Zimmermann), is described and a key to the species of Monodontus Molin, 1861 is given. The key is supplemented by figures of the dorsal ray of each species. The following description is based on seven specimens of a hookworm, three males and four females, which were collected by Dr. Jordan from the small intestine of white-tailed deer, Odocoileus virginiantus, in Tensas Parish, Louisiana, during a survey by the Southeastern Cooperative Wildlife Disease Study. These hookworms are related to Monodontus floridanus McIntosh, 1935, from Sigmodon hispidus Say and Ord, the only other North American species of the genus. However, the nematodes from 0. virginiantus appear to differ sufficiently from this and the other species in the genus to constitute a new species. The primary character for separating the species of Monodontus is variation of the dorsal ray. A key to the species of the genus and illustrations of their dorsal lobes are given (Fig. 8). All measurements are in millimeters. Monodontus louisianensis sp. n. (Figs. 1-7)
Javma-journal of The American Veterinary Medical Association, 1993
Prevalence of endoparasites (particularly ascarids) in dogs examined at the Oklahoma State Univer... more Prevalence of endoparasites (particularly ascarids) in dogs examined at the Oklahoma State University veterinary medical teaching hospital during 1981 to 1990 was determined by fecal and blood examinations. Approximately 1,250 fecal and 900 blood specimens were examined each year. In 1981, 55% of dogs harbored 1 or more parasites, compared with 36% in 1990. Percentages of all endoparasitic species decreased, except Giardia spp, which increased. The greatest decrease in prevalence was for Ancylostoma spp, which changed from 39% in 1981 to 15% in 1990. Prevalence of Toxocara spp and Trichuris spp also significantly decreased from 1981 (8% and 12%, respectively) through 1990 (4% and 9%, respectively). Although there appeared to be a downward trend in these ascarid infections, considerable environmental contamination probably existed and continues to exist because of high fecundity and long survival of eggs in the environment. Prevalence of Dipetalonema spp had a downward trend from a h...
Veterinary medicine, small animal clinician, 1974
Javma-journal of The American Veterinary Medical Association, 1956
Surgery gynecology & obstetrics, 1947
Modern veterinary practice, 1984
In a 2-year study of 49 Oklahoma cattle with a typical history of clinical endoparasitism, 12 ani... more In a 2-year study of 49 Oklahoma cattle with a typical history of clinical endoparasitism, 12 animals had Ostertagia only, and Ostertagia was the predominant endoparasite in 21. Only 1 animal had a pure Haemonchus population. Though primary endoparasitism was diagnosed antemortem in 32 animals, postmortem worm counts confirmed the diagnosis in only 19. Worm counts documented inapparent disease in 8 animals. In 21 cases of suspected of toxicosis, 12 animals had endoparasitism none was poisoned.
Veterinary medicine, small animal clinician, 1967
Javma-journal of The American Veterinary Medical Association, 1957
American journal of veterinary research, 1977
Studies on effects of subclinical parasitism (low worm burden) in full-fed and maintenance-fed st... more Studies on effects of subclinical parasitism (low worm burden) in full-fed and maintenance-fed steers indicated that over a short interval low worm burdens do not have a statistically significant effect on the efficiency of energy utilization. In full-fed steers, energy retention tended to be higher in steers with lower worm burdens (mean 95.8 Ostertagia, 12.5 Cooperia) than in those with higher worm burdens (mean 677.5 Ostertagia, 201.8 Cooperia). Maintenance-fed steers generally had larger numbers of Ostertagia ostertagi and Cooperia spp than did the full-fed steers.
Veterinary medicine, 1951
Bulletin of the Pan American Health Organization, 1974
The Journal of Parasitology, 1965
Monodonttis louisianensis sp. n. (Nematoda: Ancylostomatidae), a hookworm from the small intestin... more Monodonttis louisianensis sp. n. (Nematoda: Ancylostomatidae), a hookworm from the small intestine of Odocoileus virginianus (Zimmermann), is described and a key to the species of Monodontus Molin, 1861 is given. The key is supplemented by figures of the dorsal ray of each species. The following description is based on seven specimens of a hookworm, three males and four females, which were collected by Dr. Jordan from the small intestine of white-tailed deer, Odocoileus virginiantus, in Tensas Parish, Louisiana, during a survey by the Southeastern Cooperative Wildlife Disease Study. These hookworms are related to Monodontus floridanus McIntosh, 1935, from Sigmodon hispidus Say and Ord, the only other North American species of the genus. However, the nematodes from 0. virginiantus appear to differ sufficiently from this and the other species in the genus to constitute a new species. The primary character for separating the species of Monodontus is variation of the dorsal ray. A key to the species of the genus and illustrations of their dorsal lobes are given (Fig. 8). All measurements are in millimeters. Monodontus louisianensis sp. n. (Figs. 1-7)