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Author |
Ribeiro, H.S.; Larangeira, N.L.; Paiva, F. |
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Title |
[Prevalence of Dictyocaulus arnfieldi (Cobbald, 1884) Railiet & Henry 1907, in Pantaneira breed horses of the region of Pocone, MT] |
Type |
Journal Article |
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Year |
1979 |
Publication |
Arquivos do Instituto Biologico |
Abbreviated Journal |
Arq Inst Biol (Sao Paulo) |
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Volume |
46 |
Issue |
3-4 |
Pages |
107-110 |
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Keywords |
Animals; Brazil; Dictyocaulus/*isolation & purification; Ecology; Female; Horses/*parasitology; Male; Metastrongyloidea/*isolation & purification; Seasons |
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Abstract |
The authors sacrificed fifty-five horses originated from the “Pantanal”, lowlands in the State of Mato Grosso in two different periods, droughty period and flooded and they described for the first time the Dictyocaulus arnfieldi in Mato Grosso. Relationship between droughty and flooded periods proved not to occur. |
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Portuguese |
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Original Title |
Prevalencia de Dictyocaulus arnfieldi (Cobbald, 1884) Railiet & Henry 1907, em cavalos de raca pantaneira da regiao de Pocone, MT |
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ISSN |
0020-3653 |
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Notes  |
PMID:554599 |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2693 |
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Author |
Keiper, R.; Houpt, K. |
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Title |
Reproduction in feral horses: an eight-year study |
Type |
Journal Article |
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Year |
1984 |
Publication |
American journal of veterinary research |
Abbreviated Journal |
Am J Vet Res |
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Volume |
45 |
Issue |
5 |
Pages |
991-995 |
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Keywords |
Abortion, Veterinary/epidemiology; Anestrus; Animal Population Groups/*physiology; Animals; Animals, Wild/*physiology; Birth Rate; Female; Fertility; Horse Diseases/epidemiology; Horses/*physiology; Lactation; Male; Maryland; Pregnancy; *Reproduction; Seasons; Sex Ratio; Virginia |
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Abstract |
The reproductive rate and foal survival of the free-ranging ponies on Assateague Island National Seashore were studied for 8 years, 1975 to 1982. Most (52%) of the 86 foals were born in May, 13% were born in April, 22.6% in June, 10.4% in July, and less than 1% in August and September. The mean foaling rate was 57.1 +/- 3.9% and the survival rate was 88.3 +/- 3.6%. Forty-eight colts and 55 fillies were born (sex ratio 53% female). Mares less than 3 years old did not foal and the foaling rate of 3-year-old mares was only 23%, that of 4-year-old mares was 46%, that of 5-year-old mares was 53%, and 6-year-old mares was 69%. The relatively poor reproduction rate was believed to be a consequence of the stress of lactating while carrying a foal when forage quality on the island was low. The hypothesis was supported by the higher reproductive rate (74.4 +/- 2.4%) of the ponies in the Chincoteague National Wildlife Refuge on the southern part of the island. Their foals are weaned and sold in July each year. Despite the low reproductive rate on Assateague Island National Seashore , the number of ponies increased from 43 to 80, a 90% increase in the 8-year period or greater than 10%/yr. There were 24 deaths and 8 dispersals from the study area. |
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0002-9645 |
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Notes |
PMID:6732036 |
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Call Number |
refbase @ user @ |
Serial |
665 |
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Author |
Turner, J.W.J.; Kirkpatrick, J.F. |
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Title |
Androgens, behaviour and fertility control in feral stallions |
Type |
Journal Article |
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Year |
1982 |
Publication |
Journal of reproduction and fertility. Supplement |
Abbreviated Journal |
J Reprod Fertil Suppl |
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Volume |
32 |
Issue |
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Pages |
79-87 |
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Keywords |
Animals; Animals, Wild; Copulation/drug effects; Female; *Fertility/drug effects; Horses/*physiology; Male; Periodicity; Pregnancy; Seasons; *Sexual Behavior, Animal/drug effects; Sexual Maturation; Sperm Count; Sperm Motility/drug effects; Testosterone/*blood/pharmacology |
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Abstract |
This field study of feral stallions in Montana and Idaho examines and correlates the seasonal pattern of plasma androgens and specific sociosexual behaviour and reports the effect of a long-acting androgenic steroid on this behaviour and on fertility. Plasma testosterone was measured by competitive protein binding assay in samples obtained by jugular venepuncture from captured animals. In samples taken from 34 sexually mature stallions in 6 different months during the year, a definite seasonal pattern in testosterone was present, with a peak in May (3.04 +/- 0.63 ng/ml) and a nadir in December (1.55 +/- 0.34 ng/ml). Values were less than 2.0 ng/ml in non-breeding months and greater than 2.4 ng/ml in breeding months. Behavioural endpoints measured were (1) stallion scent marking in response to elimination by mares (elimination marking), (2) mounting and (3) copulation. The frequencies of each of these endpoints followed closely the seasonal pattern seen for plasma androgens. In the fertility study microcapsulated testosterone propionate (microTP) was administered i.m. to 10 harem stud stallions 3 months before the 1980 breeding season. In these stallions and in 10 control harem studs, the above behavioural endpoints were examined in the 1980 and 1981 breeding seasons, and foal counts were made in 1981. There were no direct inhibitory or stimulatory effects of microTP treatment on any of the behavioural endpoints in either year. In 1981 foals were produced in 87.5% of the control bands and 28.4% of the microTP-treated bands. These results indicate that microencapsulated testosterone propionate can provide effective fertility control in feral horses without causing significant alterations in sociosexual behaviour. |
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ISSN |
0449-3087 |
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Notes |
PMID:6962905 |
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Call Number |
refbase @ user @ |
Serial |
138 |
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Author |
Iwuala, M.O.; Okpala, I. |
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Title |
Studies on the ectoparasitic fauna of Nigerian livestock II: Seasonal infestation rates |
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Journal Article |
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Year |
1978 |
Publication |
Bulletin of Animal Health and Production in Africa. Bulletin des Sante et Production Animales en Afrique |
Abbreviated Journal |
Bull Anim Health Prod Afr |
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Volume |
26 |
Issue |
4 |
Pages |
351-359 |
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Keywords |
Animal Diseases/*epidemiology; Animals; Cattle; Dogs; Ecology; Ectoparasitic Infestations/epidemiology/*veterinary; Goats; Horses; Nigeria; Seasons; Sheep; Swine |
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ISSN |
0378-9721 |
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Notes |
PMID:756759 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2695 |
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Author |
Zeeb, K. |
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Title |
[Possibilities for the all-year free-range raising of horses] |
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Journal Article |
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Year |
1994 |
Publication |
DTW. Deutsche Tierarztliche Wochenschrift |
Abbreviated Journal |
Dtsch Tierarztl Wochenschr |
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Volume |
101 |
Issue |
3 |
Pages |
122-123 |
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Keywords |
Animal Feed; *Animal Husbandry; Animal Welfare; Animals; Germany; Horses/*physiology; Housing, Animal; Seasons; Weather |
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Abstract |
The ethological concept concerning supply of needs an avoidance of damage is mentioned as a possibility for the evaluation of welfare aspects related to animal management. The 250 Dulmen horses kept on 300 ha by the Duke of Croy show what must be provided for horse-keeping in a semi-natural environment: Sufficient food and water, efficient shelter as well as adequate structures for the needs of horses concerning social and comfort behaviour. A catalogue of factors, functions and facilities for this kind of horse-keeping is presented. |
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Tierhygienischen Institut, Freiburg, Breisgau |
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German |
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Original Title |
Moglichkeiten der ganzjahrigen Freilandhaltung von Pferden |
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ISSN |
0341-6593 |
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Notes |
PMID:8205954 |
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no |
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Call Number |
refbase @ user @ |
Serial |
1941 |
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Author |
Kirkpatrick, J.F.; Wiesner, L.; Kenney, R.M.; Ganjam, V.K.; Turner, J.W. |
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Title |
Seasonal variation in plasma androgens and testosterone in the North American wild horse |
Type |
Journal Article |
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Year |
1977 |
Publication |
The Journal of endocrinology |
Abbreviated Journal |
J Endocrinol |
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Volume |
72 |
Issue |
2 |
Pages |
237-238 |
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Keywords |
Androgens/*blood; Animals; Horses/*blood; Male; *Seasons; Testosterone/*blood |
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English |
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ISSN |
0022-0795 |
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Notes |
PMID:845536 |
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refbase @ user @ |
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148 |
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Author |
Krebs, J.R.; Clayton, N.S.; Hampton, R.R.; Shettleworth, S.J. |
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Title |
Effects of photoperiod on food-storing and the hippocampus in birds |
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Journal Article |
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Year |
1995 |
Publication |
Neuroreport |
Abbreviated Journal |
Neuroreport |
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Volume |
6 |
Issue |
12 |
Pages |
1701-1704 |
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Keywords |
Animals; Birds; Eating/*physiology; Female; Hippocampus/*physiology; Light; Male; *Photoperiod; Seasons; Telencephalon/physiology; Time Factors |
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Abstract |
Birds that store food have a relatively large hippocampus compared to non-storing species. The hippocampus shows seasonal differences in neurogenesis and volume in black-capped chikadees (Parus atricapillus) taken from the wild at different times of year. We compared hippocampal volumes in black-capped chickadees captured at the same time but differing in food-storing behaviour because of manipulations of photoperiod in the laboratory. Differences in food-storing behaviour were not accompanied by differences in the volume of the hippocampus. Hippocampal volumes also did not differ between two groups of a non-food-storing control species, house sparrows (Passer domesticus), exposed to the same conditions as the chickadees. |
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Edward Grey Institute of Field Ornithology, Department of Zoology, Oxford, UK |
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0959-4965 |
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Notes |
PMID:8527745 |
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Call Number |
refbase @ user @ |
Serial |
378 |
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Author |
Lemasson, J.J.; Fontenille, D.; Lochouarn, L.; Dia, I.; Simard, F.; Ba, K.; Diop, A.; Diatta, M.; Molez, J.F. |
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Title |
Comparison of behavior and vector efficiency of Anopheles gambiae and An. arabiensis (Diptera:Culicidae) in Barkedji, a Sahelian area of Senegal |
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Journal Article |
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Year |
1997 |
Publication |
Journal of Medical Entomology |
Abbreviated Journal |
J Med Entomol |
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34 |
Issue |
4 |
Pages |
396-403 |
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Keywords |
Animals; Anopheles/*parasitology; *Behavior, Animal; Cattle; Desert Climate; Horses/parasitology; Humans; Insect Vectors/*parasitology; Longitudinal Studies; Malaria/*transmission; Malaria, Falciparum/transmission; Periodicity; Plasmodium malariae/isolation & purification; Protozoan Proteins/analysis; Rain; Seasons; Senegal; Sheep/parasitology; Species Specificity |
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Abstract |
The ecology, population dynamics, and malaria vector efficiency of Anopheles gambiae and An. arabiensis were studied for 2 yr in a Sahelian village of Senegal. Anophelines were captured at human bait and resting indoors by pyrethrum spray. Mosquitoes belonging to the An. gambiae complex were identified by polymerase chain reaction. Of 26,973 females, An. arabiensis represented 79% of the mosquitoes captured and remained in the study area longer than An. gambiae after the rains terminated. There were no differences in nocturnal biting cycles or endophagous rates between An. gambiae and An. arabiensis. Based on an enzyme-linked immunosorbent assay test of bloodmeals, the anthropophilic rate of these 2 vectors were both approximately 60%, when comparisons were made during the same period. Overall, 18% of the resting females had patent mixed bloodmeals, mainly human-bovine. The parity rates of An. gambiae and An. arabiensis varied temporally. Despite similar behavior, the Plasmodium falciparum circumsporozoite protein (CSP) rates were different between An. gambiae (4.1%) and An. arabiensis (1.3%). P. malariae and P. ovale only represented 4% of the total Plasmodium identified in mosquitoes. Transmission was seasonal, occurring mainly during 4 mo. The CSP entomological inoculation rates were 128 bites per human per year for the 1st yr and 100 for the 2nd yr. Because of the combination of a high human biting rate and a low CSP rate, An. arabiensis accounted for 63% of transmission. Possible origin of differences in CSP rate between An. gambiae and An. arabiensis is discussed in relation to the parity rate, blood feeding frequency, and the hypothesis of genetic factors. |
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Institut Francais de Recherche Scientifique pour le Developpement en cooperation (ORSTOM), Institut Pasteur, Dakar, Senegal |
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0022-2585 |
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Notes |
PMID:9220672 |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2655 |
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Author |
Khalil, A.M.; Murakami, N.; Kaseda, Y. |
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Title |
Relationship between plasma testosterone concentrations and age, breeding season and harem size in Misaki feral horses |
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Journal Article |
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Year |
1998 |
Publication |
The Journal of veterinary medical science / the Japanese Society of Veterinary Science |
Abbreviated Journal |
J Vet Med Sci |
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Volume |
60 |
Issue |
5 |
Pages |
643-645 |
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Keywords |
Age Factors; Animals; Animals, Wild; *Horses; Japan; Male; Reproduction; Seasons; Sexual Behavior, Animal; Sexual Maturation; *Social Behavior; Testosterone/*blood |
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Abstract |
Jugular vein blood samples were collected from 23 young and sexual mature feral stallions to examine the relationship between plasma testosterone concentration and age, breeding season or harem size. Testosterone concentration increased with the age of the stallions until they formed their own harems, at about 4 to 6 years old. Seasonal variations in testosterone concentrations were observed, and found to be significantly higher (P<0.001) throughout the breeding season than non-breeding season, from 3 years of age. Testosterone levels were correlated with harem size for individual stallions. It can be inferred from these results that there is a relationship between plasma testosterone concentration and age, breeding season and harem size. |
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Laboratory of Animal Behavioral Science, Faculty of Agriculture, Miyazaki University, Japan |
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0916-7250 |
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Notes |
PMID:9637303 |
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Call Number |
refbase @ user @ |
Serial |
137 |
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