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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: |
13/06/2023 |
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Autoria: |
LINZELL, J. L. |
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Título: |
Innate seasonal oscillations in the rate of milk secretion in goats. |
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Ano de publicação: |
1973 |
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Fonte/Imprenta: |
The Journal of Physiology, v. 230, n. 1, p. 225-233, Apr. 1973. |
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DOI: |
10.1113/jphysiol.1973.sp010185. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: 1. When goats were kept in continuous milk production for 2-4 yr the rate of milk secretion oscillated in a sinusoidal fashion with a mean wavelength of 49.7 +/- 1 weeks, being highest in summer and lowest in winter.2. Milk [Cl] tended to be higher in summer and [protein] highest in winter but there were no seasonal changes in [fat], [lactose], [Na] or [K].3. There were no seasonal oscillations in body weight but the udders were larger in summer than in winter although this did not solely account for the changes in milk yield.4. Although the autumnal fall in yield and the rise in the spring coincided with the breeding season, seasonal variations also occurred in two ovariectomized animals.5. Seasonal fluctuations were independent of diet, occurring equally in animals that had never eaten grass but were fed continuously on dry feed and hay ad libitum.6. Annual oscillations in yield and udder size but not [protein] and [Cl] were also exhibited in two goats kept in a constant temperature chamber at 14 +/- 2 degrees C, fed every 2 hr and subjected continuously to 16 hr light and 8 hr dark. These observations have so far persisted for 2 yr in one goat and for 3 yr in the other. However, the wave-length was reduced to 45 +/- 1 weeks. Oestrus was suppressed for 2 years. |
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Palavras-Chave: |
Epoca; Organ Size; Ovary. |
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Thesagro: |
Caprino; Fisiologia; Leite; Secreção. |
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Thesaurus Nal: |
Chlorides; Goats; Lactation; Lipids; Mammary glands; Metabolism; Milk proteins; Physiology; Potassium; Pregnancy; Seasons; Sodium. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02207naa a2200361 a 4500
001 1520705
005 2023-06-13
008 1973 bl uuuu u00u1 u #d
024 7 $a10.1113/jphysiol.1973.sp010185.$2DOI
100 1 $aLINZELL, J. L.
245 $aInnate seasonal oscillations in the rate of milk secretion in goats.$h[electronic resource]
260 $c1973
520 $aAbstract: 1. When goats were kept in continuous milk production for 2-4 yr the rate of milk secretion oscillated in a sinusoidal fashion with a mean wavelength of 49.7 +/- 1 weeks, being highest in summer and lowest in winter.2. Milk [Cl] tended to be higher in summer and [protein] highest in winter but there were no seasonal changes in [fat], [lactose], [Na] or [K].3. There were no seasonal oscillations in body weight but the udders were larger in summer than in winter although this did not solely account for the changes in milk yield.4. Although the autumnal fall in yield and the rise in the spring coincided with the breeding season, seasonal variations also occurred in two ovariectomized animals.5. Seasonal fluctuations were independent of diet, occurring equally in animals that had never eaten grass but were fed continuously on dry feed and hay ad libitum.6. Annual oscillations in yield and udder size but not [protein] and [Cl] were also exhibited in two goats kept in a constant temperature chamber at 14 +/- 2 degrees C, fed every 2 hr and subjected continuously to 16 hr light and 8 hr dark. These observations have so far persisted for 2 yr in one goat and for 3 yr in the other. However, the wave-length was reduced to 45 +/- 1 weeks. Oestrus was suppressed for 2 years.
650 $aChlorides
650 $aGoats
650 $aLactation
650 $aLipids
650 $aMammary glands
650 $aMetabolism
650 $aMilk proteins
650 $aPhysiology
650 $aPotassium
650 $aPregnancy
650 $aSeasons
650 $aSodium
650 $aCaprino
650 $aFisiologia
650 $aLeite
650 $aSecreção
653 $aEpoca
653 $aOrgan Size
653 $aOvary
773 $tThe Journal of Physiology$gv. 230, n. 1, p. 225-233, Apr. 1973.
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| 1. |  | FLOSS, E. L.; AUGUSTIN, L.; LINHARES, A. G.; MATIOTTI, T. G. Avaliação de genótipos de aveias silvestres, em Passo Fundo, 1998. In: REUNIÃO DA COMISSÃO BRASILEIRA DE PESQUISA DE AVEIA, 19., 1999, Porto Alegre. Resultados experimentais... Porto Alegre: UFRGS - Faculdade de Agronomia - Departamento de Plantas de Lavoura, 1999. p. 175-181 Editado por PACHECO, M. T.; FEDERIZZI, L. C.; MILACH, S. C. K.; MUNDSTOCK, C. M.; MARTINELLI, J. A.| Biblioteca(s): Embrapa Trigo. |
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