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 | Acesso ao texto completo restrito à biblioteca da Embrapa Caprinos e Ovinos. Para informações adicionais entre em contato com cnpc.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
01/08/1992 |
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Data da última atualização: |
04/09/2023 |
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Autoria: |
HAFEZ, E. S. E.; BADRELDIN, A. L.; SHARAFELDIN, M. A. |
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Título: |
Heat-tolerance studies of fat-tailed sheep in the subtropics. |
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Ano de publicação: |
1956 |
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Fonte/Imprenta: |
Journal of Agricultural Science, v. 47, n. 3, p. 280-286, 1956. |
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DOI: |
10.1017/S002185960004034X |
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Idioma: |
Inglês |
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Conteúdo: |
Forty adult (15 months old) fat-tailed Egyptian rams and ewes of the Rahmani and Ossimi breeds were available at the Animal Breeding Research Farm, Giza, Egypt (30° N.). Body temperature and respiration rates were measured twice weekly throughout the year 1953?4. On days of observations, four readings were taken at 10 a.m., 12 noon, 2 p.m. and 4 p.m. Skin temperature was measured once weekly at noon for nine body regions, using a precision bridge thermometer. The effects of docking and pregnancy were also studied. 1. There were seasonal variations in body temperature and respiration rate. The maximum values were during summer and the minimum during winter. The seasonal rate of change was greater in respiration rate than in body temperature. 2. Body temperature was 39·1 and 39·0° C. for the Ossimi rams and ewes respectively, while it was 38·9° C. for both Rahmani sexes. Respiration rate per minute was 42·0, 39·3, for Ossimi rams and ewes and 38·2 and 35·9 for Rahmani rams and ewes respectively. Body temperature and respiration rate were higher in the Ossimi than in the Rahmani breed, and in the males than in the females. Breed differences may be related to anatomical differences such as body conformation, size of skull and tail, thickness of skin and subcutaneous fat and differences in coat characteristics. Sex differences may be associated with the live weight of the animals as well as differences in the hormonal system. 3. Pregnancy had no effect on body temperature and respiration rate in either breed. 4. Different experimental groups reacted similarly with respect to diurnal variations in body temperature and respiration rate; the lowest values being at 10 a.m. and the highest at 4 p.m. Maximum body temperature and respiration rate preceded maximum environmental temperature by 2?4 hr. The diurnal rate of change in respiration rate was higher than that in body temperature. The diurnal changes in body temperature and respiration rate of animals were mainly due to the changes in the environmental temperature throughout the day. 5. (a) Skin temperature varied from 33·7 to 39·7° C., according to season and body region. Seasonal variations in skin temperature of different body regions showed the same trend. (b) Highest skin temperatures were recorded for middle and upper fat tail, back thoracic and middle scrotum regions, while the lowest were recorded in lower and upper scrotum, lower tail and neck ventral regions. The breast region had an intermediate skin temperature. The different skin temperatures were due to anatomical differences such as the thickness of subcutaneous fat, density of covering wool or to differences in the amount of blood supply. 6. Docked rams had a lower skin temperature and respiration rate than controls, denoting better heat regulation. This may be due to metabolic differences or anatomical changes in the body such as the thickness of subcutaneous fat. MenosForty adult (15 months old) fat-tailed Egyptian rams and ewes of the Rahmani and Ossimi breeds were available at the Animal Breeding Research Farm, Giza, Egypt (30° N.). Body temperature and respiration rates were measured twice weekly throughout the year 1953?4. On days of observations, four readings were taken at 10 a.m., 12 noon, 2 p.m. and 4 p.m. Skin temperature was measured once weekly at noon for nine body regions, using a precision bridge thermometer. The effects of docking and pregnancy were also studied. 1. There were seasonal variations in body temperature and respiration rate. The maximum values were during summer and the minimum during winter. The seasonal rate of change was greater in respiration rate than in body temperature. 2. Body temperature was 39·1 and 39·0° C. for the Ossimi rams and ewes respectively, while it was 38·9° C. for both Rahmani sexes. Respiration rate per minute was 42·0, 39·3, for Ossimi rams and ewes and 38·2 and 35·9 for Rahmani rams and ewes respectively. Body temperature and respiration rate were higher in the Ossimi than in the Rahmani breed, and in the males than in the females. Breed differences may be related to anatomical differences such as body conformation, size of skull and tail, thickness of skin and subcutaneous fat and differences in coat characteristics. Sex differences may be associated with the live weight of the animals as well as differences in the hormonal system. 3. Pregnancy had no effect on body temperature and res... Mostrar Tudo |
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Palavras-Chave: |
Adaptacao; Respiration rate. |
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Thesagro: |
Bioclimatologia; Ovino; Resistência a Temperatura. |
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Thesaurus Nal: |
Bioclimatology; Body temperature; Rams; Sheep. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 03691naa a2200265 a 4500
001 1520142
005 2023-09-04
008 1956 bl uuuu u00u1 u #d
024 7 $a10.1017/S002185960004034X$2DOI
100 1 $aHAFEZ, E. S. E.
245 $aHeat-tolerance studies of fat-tailed sheep in the subtropics.$h[electronic resource]
260 $c1956
520 $aForty adult (15 months old) fat-tailed Egyptian rams and ewes of the Rahmani and Ossimi breeds were available at the Animal Breeding Research Farm, Giza, Egypt (30° N.). Body temperature and respiration rates were measured twice weekly throughout the year 1953?4. On days of observations, four readings were taken at 10 a.m., 12 noon, 2 p.m. and 4 p.m. Skin temperature was measured once weekly at noon for nine body regions, using a precision bridge thermometer. The effects of docking and pregnancy were also studied. 1. There were seasonal variations in body temperature and respiration rate. The maximum values were during summer and the minimum during winter. The seasonal rate of change was greater in respiration rate than in body temperature. 2. Body temperature was 39·1 and 39·0° C. for the Ossimi rams and ewes respectively, while it was 38·9° C. for both Rahmani sexes. Respiration rate per minute was 42·0, 39·3, for Ossimi rams and ewes and 38·2 and 35·9 for Rahmani rams and ewes respectively. Body temperature and respiration rate were higher in the Ossimi than in the Rahmani breed, and in the males than in the females. Breed differences may be related to anatomical differences such as body conformation, size of skull and tail, thickness of skin and subcutaneous fat and differences in coat characteristics. Sex differences may be associated with the live weight of the animals as well as differences in the hormonal system. 3. Pregnancy had no effect on body temperature and respiration rate in either breed. 4. Different experimental groups reacted similarly with respect to diurnal variations in body temperature and respiration rate; the lowest values being at 10 a.m. and the highest at 4 p.m. Maximum body temperature and respiration rate preceded maximum environmental temperature by 2?4 hr. The diurnal rate of change in respiration rate was higher than that in body temperature. The diurnal changes in body temperature and respiration rate of animals were mainly due to the changes in the environmental temperature throughout the day. 5. (a) Skin temperature varied from 33·7 to 39·7° C., according to season and body region. Seasonal variations in skin temperature of different body regions showed the same trend. (b) Highest skin temperatures were recorded for middle and upper fat tail, back thoracic and middle scrotum regions, while the lowest were recorded in lower and upper scrotum, lower tail and neck ventral regions. The breast region had an intermediate skin temperature. The different skin temperatures were due to anatomical differences such as the thickness of subcutaneous fat, density of covering wool or to differences in the amount of blood supply. 6. Docked rams had a lower skin temperature and respiration rate than controls, denoting better heat regulation. This may be due to metabolic differences or anatomical changes in the body such as the thickness of subcutaneous fat.
650 $aBioclimatology
650 $aBody temperature
650 $aRams
650 $aSheep
650 $aBioclimatologia
650 $aOvino
650 $aResistência a Temperatura
653 $aAdaptacao
653 $aRespiration rate
700 1 $aBADRELDIN, A. L.
700 1 $aSHARAFELDIN, M. A.
773 $tJournal of Agricultural Science$gv. 47, n. 3, p. 280-286, 1956.
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Embrapa Caprinos e Ovinos (CNPC) |
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| Registros recuperados : 4 | |
| 1. |  | FARIAS, L. R.; SCHIMMELPFENG, P. H. C.; TOGAWA, R. C.; COSTA, M. M. do C.; GRYNBERG, P.; MARTINS, N. F.; BORGES, M.; MORAES, M. C. B.; LAUMANN, R. A.; BÁO, S. N.; PAULA, D. P. Transcriptome-based identification of highly similar odorant-binding proteins among neotropical stink bugs and their egg parasitoid. Plos One, jul., 2015.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 2. | | MICHEREFF, M. F. F.; GRYNBERG, P.; TOGAWA, R. C.; COSTA, M. M. do C.; LAUMANN, R. A.; ZHOU, J.-J.; SCHIMMELPFENG, P. H. C.; BORGES, M.; PICKETT, J. A.; BIRKETT, M. A.; MORAES, M. C. B. Priming of indirect defence responses in maize is shown to be genotype-specific. Arthropod-Plant Interactions, v. 15, p. 313-328, 2021. Na publicação: Marcos M. C. Costa; Maria Carolina Blassioli-Moraes.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 3. | | MICHEREFF, M. M.; MAGALHÃES, D. M.; HASSEMER, M. J.; LAUMANN, R. A.; ZHOU, J.-J.; RIBEIRO, P. E. de A.; VIANA, P. A.; GUIMARAES, P. E. de O.; SCHIMMELPFENG, P. H. C.; BORGES, M.; PICKETT, J. A.; BIRKETT, M. A.; BLASSIOLI-MORAES, M. C. Variability in herbivore-induced defence signalling across different maize genotypes impacts significantly on natural enemy foraging behaviour. Journal of Pest Science, v. 92, p. 723-736, 2019.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 4. | | MICHEREFF, M. M.; MAGALHÃES, D. M.; HASSEMER, M. J.; LAUMANN, R. A.; ZHOU, J.-J.; RIBEIRO, P. E. de A.; VIANA, P. A.; GUIMARAES, P. E. de O.; SCHIMMELPFENG, P. H. C.; BORGES, M.; PICKETT, J. A.; BIRKETT, M. A.; MORAES, M. C. B. Variability in herbivore-induced defence signalling across different maize genotypes impacts significantly on natural enemy foraging behaviour. Journal of Pest Science, v. 92, p. 723-736, 2019.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Milho e Sorgo. |
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| Registros recuperados : 4 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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