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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: |
08/11/2023 |
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Autoria: |
ALEXANDER, G. |
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Título: |
Temperature regulation in the new-born lamb. III. Effect of environmental temperature on metabolic rate, body temperatures, and respiratory quotient. |
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Ano de publicação: |
1961 |
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Fonte/Imprenta: |
Australian Journal Agricultural Research, v. 12, n. 6, p. 1152-1174, 1961. |
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DOI: |
https://doi.org/10.1071/AR9611152 |
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Idioma: |
Inglês |
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Conteúdo: |
Studies were made on temperature regulation of lambs in a closed circuit indirect calorimeter. Dry new-born lambs were able to maintain normal body temperature in ambient temperatures as low as -5°C. This was accomplished by increasing heat production to 2?3 times "basal" levels, apparently by increased oxidation of fats, and by reducing heat loss through the extremities by vasoconstriction. The lower limit of the zone of thermal neutrality was about 29°C. In unsuckled lambs within 24 hr of birth, the heat produced in response to cold appeared to be independent of pre-natal nutrition and age. It was considerably lower in lambs with hairy coats than in lambs with fine coats. Milk intake increased heat production, and this increase was abolished after 12 hr of fasting in lambs up to 3 days old, but the increase persisted in older lambs. The increase was accompanied by, and was apparently due to, elevated heat loss from the extremities, which persisted even at low temperatures. The maximal thermal insulation of the tissues, calculated from these results, was about 1 Clo; that of the fleece plus air was only 1 to 2 Clo. |
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Palavras-Chave: |
Termoregulacao. |
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Thesagro: |
Bioclimatologia; Ovino. |
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Thesaurus Nal: |
Bioclimatology; Lambs; Physiological regulation; Sheep; Thermoregulation. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
null
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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| Registros recuperados : 3 | |
| 1. |  | PAVEI, D. S.; PANACHUKI, E.; SALTON, J. C.; SONE, J. S.; ALVES SOBRINHO, T. A.; VALIM, W. C.; OLIVEIRA, P. T. S. de. Soil physical properties and interrill erosion in agricultural production systems after 20 years of cultivation. Revista Brasileira de Ciência do Solo, v. 45, n. e0210039, 2021.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Agropecuária Oeste. |
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| 2. | | SONE, J. S.; OLIVEIRA, P. T. S. de; ZAMBONI, P. A. P.; VIEIRA, N. O. M.; CARVALHO, A. C.; MACEDO, M. C. M.; ARAUJO, A. R. de; MONTAGNER, D. B.; ALVES SOBRINHO, T. Effects of Long-Term Crop-Livestock-Forestry Systems on Soil Erosion and Water Infiltration in a Brazilian Cerrado Site. Sustainability, v. 11, 2019.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 3. | | SONE, J. S.; OLIVEIRA, P. T. S.; EUCLIDES, V. P. B.; MONTAGNER, D. B.; ARAUJO, A. R. de; ZAMBONI, P. A. P.; VIEIRA, N. O. M.; CARVALHO, G. A.; ALVES SOBRINHO, T. Effects of Nitrogen fertilisation and stocking rates on soil erosion and water infiltration in a Brazilian Cerrado farm. Agriculture, Ecosystems and Environment, n. 304, 2020.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Gado de Corte. |
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| Registros recuperados : 3 | |
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