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Biblioteca(s):  Embrapa Caprinos e Ovinos.
Data corrente:  17/09/1998
Data da última atualização:  08/09/2021
Tipo da produção científica:  Resumo em Anais de Congresso
Autoria:  ELOY, A. M. X.; RODWAY, R. G.
Afiliação:  ANGELA MARIA XAVIER ELOY, CNPC.
Título:  Effect of isolation stress on beta-endorphin and LH levels in ovariectomized ewes.
Ano de publicação:  1994
Fonte/Imprenta:  Animal Production, v. 58, n. 3, p. 483, 1994. Abstract 220.
Idioma:  Inglês
Notas:  Abstract presented in the MEETING OF THE BRITISH SOCIETY OF ANIMAL PRODUCTION, 109., 1994, Scarborough. Proceedings.
Conteúdo:  Abstract: The objective of this experiment was to study the effect of the psychological stress of isolation on luteinizing hormone (LH) secretion in ovariectomized ewes. Sheep were initially penned in pairs. Isolation was accomplished by removing the non-experimental sheep to another room. The trials lasted from 10.00 untii 18.00 h. ln the first stage (from 10.00 until 14.00 h) the animals were alIowed to have visual contactwith their partners, while in the second stage (14.00 until 18.00 h) the animals were isolated. Blood samples were taken at 15-min intervals throughout the experiment from jugular catheters implanted the previous day. Samples were analysed for glucose, (Betha-endorphin and LH. The isolation stress caused a significant (P < 0.05) elevation of (Betha-endorphin (316 (s.e. 11-4) v. 381 (s.e. 20.7) ng/l) but did not alter significantly (P> 0.05) the mean LH levels (4.23 (s.e. 0.14) v. 3.92 (s.e. 0.13) ug/1). However LH secretion was seen to dec1ine rapidly after the onset of isolation and then to recover. When the data were analysed in 2-h time periods the LH levels were significantly (P < 0.05) reduced betwen the 2 h before (4.70 (s.e. 0.2) ug/l) and after (3.90 (s.e. 0.2) ug/l) isolation. LH pplse analysis performed using PULSAR showed that the pulse frequency and pulse amplitude were reduced after isolation (3.8 (s.e. 1.2) v. 3.3 (s.e. 1.1) pulses per 4 h) and (2.6 (s.e. 1.5) v. 1.6 (s.e. 1.0) ug/I), respectively. Glucose levels showed significant (P < 0.05... Mostrar Tudo
Palavras-Chave:  Endorfina; LH.
Thesagro:  Hormônio; Ovino; Stress.
Thesaurus NAL:  Endorphins; Sheep.
Categoria do assunto:  L Ciência Animal e Produtos de Origem Animal
URL:  https://www.alice.cnptia.embrapa.br/alice/bitstream/doc/515008/1/RACEffectofisolation.pdf
Marc:  Mostrar Marc Completo
Registro original:  Embrapa Caprinos e Ovinos (CNPC)
Biblioteca ID Origem Tipo/Formato Classificação Cutter Registro Volume Status
CNPC1235 - 1UPCRA - DD.
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