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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: |
22/07/2025 |
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Autoria: |
ALEXANDER, G. |
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Título: |
Energy metabolism in the starved new-born lamb. |
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Ano de publicação: |
1962 |
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Fonte/Imprenta: |
Australian Journal of Agricultural Research, v. 13, n. 1, p. 144-164, 1962. |
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DOI: |
10.1071/AR9620144 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: New-born lambs were treated in one of three ways: (a) killed within 2 hr of birth; (b) starved at 23°C in 'still air'; (c) starved at approximately 9°C in moving air. Starved lambs became hypothermic and hypoglycaemic and lapsed into coma or convulsions shortly before death, which occurred between 16 hr and 5 days. Survival was generally longer when starvation was at the higher temperature. The size of the energy reserves was estimated from the fat and glycogen content of lambs killed at birth or near death from starvation; protein utilization during starvation was estimated from nitrogen excretion in the urine and the increase in urea in the blood. Fat and carbohydrate reserves appeared to be exhausted near death from starvation. Fat was the largest source of energy, and there was twice as much fat available at birth in lambs from well-fed ewes as in lambs from poorly fed ewes. Carbohydrate reserves in the liver and muscle appeared unaffected by pre-natal nutrition. Protein utilization increased progressively throughout starvation at a rate independent of pre-natal nutrition, and the total amount of protein utilized depended on the period of survival. Total energy reserves in lambs from well-fed and poorly fed ewes were approximately 1000 and 400 kcal respectively estimated as above or from calorimetric studies during starvation. |
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Palavras-Chave: |
Newborn animals; Physiological functions; Recem-nascido. |
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Thesagro: |
Cordeiro; Metabolismo Energético; Nutrição; Ovino. |
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Thesaurus Nal: |
Lambs; Neonates; Nutrition physiology; Ruminant nutrition; Sheep. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02129naa a2200277 a 4500
001 1521281
005 2025-07-22
008 1962 bl uuuu u00u1 u #d
024 7 $a10.1071/AR9620144$2DOI
100 1 $aALEXANDER, G.
245 $aEnergy metabolism in the starved new-born lamb.$h[electronic resource]
260 $c1962
520 $aAbstract: New-born lambs were treated in one of three ways: (a) killed within 2 hr of birth; (b) starved at 23°C in 'still air'; (c) starved at approximately 9°C in moving air. Starved lambs became hypothermic and hypoglycaemic and lapsed into coma or convulsions shortly before death, which occurred between 16 hr and 5 days. Survival was generally longer when starvation was at the higher temperature. The size of the energy reserves was estimated from the fat and glycogen content of lambs killed at birth or near death from starvation; protein utilization during starvation was estimated from nitrogen excretion in the urine and the increase in urea in the blood. Fat and carbohydrate reserves appeared to be exhausted near death from starvation. Fat was the largest source of energy, and there was twice as much fat available at birth in lambs from well-fed ewes as in lambs from poorly fed ewes. Carbohydrate reserves in the liver and muscle appeared unaffected by pre-natal nutrition. Protein utilization increased progressively throughout starvation at a rate independent of pre-natal nutrition, and the total amount of protein utilized depended on the period of survival. Total energy reserves in lambs from well-fed and poorly fed ewes were approximately 1000 and 400 kcal respectively estimated as above or from calorimetric studies during starvation.
650 $aLambs
650 $aNeonates
650 $aNutrition physiology
650 $aRuminant nutrition
650 $aSheep
650 $aCordeiro
650 $aMetabolismo Energético
650 $aNutrição
650 $aOvino
653 $aNewborn animals
653 $aPhysiological functions
653 $aRecem-nascido
773 $tAustralian Journal of Agricultural Research$gv. 13, n. 1, p. 144-164, 1962.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
