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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: |
01/06/2023 |
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Autoria: |
QUIRKE, J. F.; SHEEHAN, W.; LAWLOR, M. J. |
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Título: |
The growth of pregnant female lambs and their progeny in relation to dietary protein and energy during pregnancy. |
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Ano de publicação: |
1978 |
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Fonte/Imprenta: |
Irish Journal of Agricultural Research, v. 17, n. 1, p. 33-42, Apr. 1978. |
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Idioma: |
Inglês |
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Conteúdo: |
One hundred and twenty-eight Finnish Landrace X Galway female lambs, 40 kg liveweight and about 8 months old, were individually penned from between 5 and 6 weeks after mating until parturition. The experimental treatments applied during this period consisted of two levels of energy (8.0 and 12.0 MJ ME/day) with three levels of crude protein (110, 155 and 220 g/day) at each energy level. A series of nitrogen balance trials was carried out on six animals from each treatment during the final 90 days of gestation. One hundred and six females produced lambs at full term (1.61 lambs/ewe). Increasing protein intake from the low to intermediate level increased maternal liveweight gain, but there was no further response to the high level. There was a significant interaction between protein and energy with respect to lamb birth weight; at the lower energy level lamb birth weight tended to increase with increasing protein intake, but the opposite effect occurred at the higher energy level. |
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Palavras-Chave: |
Foetal growth; Foetus; Gestacao. |
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Thesagro: |
Energia; Nutrição; Ovelha; Ovino; Proteína. |
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Thesaurus Nal: |
Ewes; Females; Gestation period; Lambs; Pregnancy; Ruminant nutrition; Sheep. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 01867naa a2200325 a 4500
001 1522190
005 2023-06-01
008 1978 bl uuuu u00u1 u #d
100 1 $aQUIRKE, J. F.
245 $aThe growth of pregnant female lambs and their progeny in relation to dietary protein and energy during pregnancy.$h[electronic resource]
260 $c1978
520 $aOne hundred and twenty-eight Finnish Landrace X Galway female lambs, 40 kg liveweight and about 8 months old, were individually penned from between 5 and 6 weeks after mating until parturition. The experimental treatments applied during this period consisted of two levels of energy (8.0 and 12.0 MJ ME/day) with three levels of crude protein (110, 155 and 220 g/day) at each energy level. A series of nitrogen balance trials was carried out on six animals from each treatment during the final 90 days of gestation. One hundred and six females produced lambs at full term (1.61 lambs/ewe). Increasing protein intake from the low to intermediate level increased maternal liveweight gain, but there was no further response to the high level. There was a significant interaction between protein and energy with respect to lamb birth weight; at the lower energy level lamb birth weight tended to increase with increasing protein intake, but the opposite effect occurred at the higher energy level.
650 $aEwes
650 $aFemales
650 $aGestation period
650 $aLambs
650 $aPregnancy
650 $aRuminant nutrition
650 $aSheep
650 $aEnergia
650 $aNutrição
650 $aOvelha
650 $aOvino
650 $aProteína
653 $aFoetal growth
653 $aFoetus
653 $aGestacao
700 1 $aSHEEHAN, W.
700 1 $aLAWLOR, M. J.
773 $tIrish Journal of Agricultural Research$gv. 17, n. 1, p. 33-42, Apr. 1978.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
