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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: |
11/06/2025 |
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Autoria: |
ALLISON, A. J. |
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Título: |
Flock mating in sheep. II. Effect of ewes per ram on mating behaviour and fertility of two-tooth and mixed-age Romney ewes run together. |
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Ano de publicação: |
1976 |
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Fonte/Imprenta: |
New Zealand Journal of Agricultural Research, v. 20, n. 2, p. 125-128, 1976. |
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DOI: |
10.1080/00288233.1977.10427315 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Flocks of two-tooth and mixed-age Romney ewes run together were joined with different numbers of ewes per ram in two experiments (4/200 and 4/400, Experiment 1; 4/240 and 4/720, Experiment 2). In the first experiment, increasing the number of ewes per ram decreased the percentage of two-tooths mated in the first cycle by 18.5 and also decreased the mean number of rams mating each ewe. Barrenness was not affected. There were no effects on the mixed-age ewes. In the second experiment, increasing the number of ewes per ram caused a small decrease in the percentage of ewes mated in both age-groups and also decreased the mean number of rams mating each ewe. There was a significant increase in barrenness of two-tooths but no effect on the mixed-age ewes. In the 4/720 group in Experiment 2, only 57.1% of two-tooths less than 36.8 kg were mated during the first 16 days compared with 84.7% of animals above this weight. |
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Palavras-Chave: |
Comportamento reprodutivo. |
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Thesagro: |
Acasalamento; Comportamento Sexual; Fisiologia; Ovino; Reprodução. |
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Thesaurus Nal: |
Animal fertility; Ewes; Rams; Reproduction; Reproductive behavior; Romney; Sheep. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01818naa a2200289 a 4500
001 1521632
005 2025-06-11
008 1976 bl uuuu u00u1 u #d
024 7 $a10.1080/00288233.1977.10427315$2DOI
100 1 $aALLISON, A. J.
245 $aFlock mating in sheep. II. Effect of ewes per ram on mating behaviour and fertility of two-tooth and mixed-age Romney ewes run together.$h[electronic resource]
260 $c1976
520 $aAbstract: Flocks of two-tooth and mixed-age Romney ewes run together were joined with different numbers of ewes per ram in two experiments (4/200 and 4/400, Experiment 1; 4/240 and 4/720, Experiment 2). In the first experiment, increasing the number of ewes per ram decreased the percentage of two-tooths mated in the first cycle by 18.5 and also decreased the mean number of rams mating each ewe. Barrenness was not affected. There were no effects on the mixed-age ewes. In the second experiment, increasing the number of ewes per ram caused a small decrease in the percentage of ewes mated in both age-groups and also decreased the mean number of rams mating each ewe. There was a significant increase in barrenness of two-tooths but no effect on the mixed-age ewes. In the 4/720 group in Experiment 2, only 57.1% of two-tooths less than 36.8 kg were mated during the first 16 days compared with 84.7% of animals above this weight.
650 $aAnimal fertility
650 $aEwes
650 $aRams
650 $aReproduction
650 $aReproductive behavior
650 $aRomney
650 $aSheep
650 $aAcasalamento
650 $aComportamento Sexual
650 $aFisiologia
650 $aOvino
650 $aReprodução
653 $aComportamento reprodutivo
773 $tNew Zealand Journal of Agricultural Research$gv. 20, n. 2, p. 125-128, 1976.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
