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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: |
SMITH, J. F.; JAGUSCH, K. T.; FARQUHAR, P. A. |
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Título: |
The effect on the duration and timing of flushing on the ovulation rate of ewes. |
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Ano de publicação: |
1983 |
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Fonte/Imprenta: |
Proceedings of the New Zealand Society of Animal Production, v. 43, p. 13-16, Jan. 1983. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: In each of 2 years Coopworth ewes were randomised to 8 groups which were offered 2 levels of herbage allowance (1.0 and 5.0 kg DM/ewe/d) from mixed pasture for varying periods during the 6 weeks prior to a synchronised mating. The ovulation rates of ewes fed at the lower allowance and then given the higher allowance for periods of 1 or 2 weeks prior to mating were not different from those fed continuously at the lower allowance. Ewes offered 3 weeks at the higher allowance showed a 25% increase in ovulation rate irrespective of when in the 6 week period this was received. Thus a minimum carry over period of 3 weeks was obtained. A further 30% increase in ovulation rate was obtained when ewes were offered the higher allowance for the full 6 week period. The proportion in ovulation rate was obtained when ewes were offered the higher allowance for the full 6 week period. The proportion of ewes lambing multiples was lower for those receiving <3 weeks high level feeding than for those receiving at least 3 weeks (33.5% v 56.0%; P<0.001), but there was no additional response to feeding at the high level for 6 weeks. |
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Palavras-Chave: |
Flushing; Suplementacao; Taxa de ovulacao. |
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Thesagro: |
Nutrição; Ovino; Reprodução. |
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Thesaurus Nal: |
Animal reproduction; Feeding level; Ovulation; Ruminant nutrition; Sheep. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 01932naa a2200277 a 4500
001 1522188
005 2023-06-13
008 1983 bl uuuu u00u1 u #d
100 1 $aSMITH, J. F.
245 $aThe effect on the duration and timing of flushing on the ovulation rate of ewes.$h[electronic resource]
260 $c1983
520 $aAbstract: In each of 2 years Coopworth ewes were randomised to 8 groups which were offered 2 levels of herbage allowance (1.0 and 5.0 kg DM/ewe/d) from mixed pasture for varying periods during the 6 weeks prior to a synchronised mating. The ovulation rates of ewes fed at the lower allowance and then given the higher allowance for periods of 1 or 2 weeks prior to mating were not different from those fed continuously at the lower allowance. Ewes offered 3 weeks at the higher allowance showed a 25% increase in ovulation rate irrespective of when in the 6 week period this was received. Thus a minimum carry over period of 3 weeks was obtained. A further 30% increase in ovulation rate was obtained when ewes were offered the higher allowance for the full 6 week period. The proportion in ovulation rate was obtained when ewes were offered the higher allowance for the full 6 week period. The proportion of ewes lambing multiples was lower for those receiving <3 weeks high level feeding than for those receiving at least 3 weeks (33.5% v 56.0%; P<0.001), but there was no additional response to feeding at the high level for 6 weeks.
650 $aAnimal reproduction
650 $aFeeding level
650 $aOvulation
650 $aRuminant nutrition
650 $aSheep
650 $aNutrição
650 $aOvino
650 $aReprodução
653 $aFlushing
653 $aSuplementacao
653 $aTaxa de ovulacao
700 1 $aJAGUSCH, K. T.
700 1 $aFARQUHAR, P. A.
773 $tProceedings of the New Zealand Society of Animal Production$gv. 43, p. 13-16, Jan. 1983.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
