Registro Completo |
Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
Data corrente: |
26/01/2017 |
Data da última atualização: |
26/01/2017 |
Autoria: |
TOMAR, S. S.; MAHAJAN, J. M. |
Título: |
Lifetime reproductive performance of Rambouillet ewes under subtemperate conditions. |
Ano de publicação: |
1980 |
Fonte/Imprenta: |
The Indian Journal of Animal Sciences, v. 50, n. 10, p. 838-843, Oct. 1980. |
Idioma: |
Inglês |
Conteúdo: |
Abstract : In 55 ewes over a 10-yr period, longevity averaged 6.70 plus or minus 0.25 yr and productive life 4.29 plus or minus 0.25 yr. Annual mortality in adult ewes averaged 20.9%. Overall, 80.14% of ewes exhibited oestrus during the autumn breeding season. 70.94% of ewes mated, and 56.8% of all ewes lambed. The incidence of oestrus was significantly correlated with ewe body weight at mating (0.23 plus or minus 0.07). The lifetime number of lambings averaged 2.96 plus or minus 0.20, the lifetime number of lambs produced 2.80 plus or minus 0.21, the number of ewe lambs produced 1.24 plus or minus 0.14, and annual number of lambings per ewe 0.67 plus or minus 0.03. The survival rate of ewe lambs to 1 yr of age was 32.14%. |
Thesagro: |
Eficiência reprodutiva; Ovino; Performance; Reprodução animal. |
Thesaurus Nal: |
Reproduction; Sheep. |
Categoria do assunto: |
-- |
Marc: |
LEADER 01322naa a2200205 a 4500 001 2061964 005 2017-01-26 008 1980 bl uuuu u00u1 u #d 100 1 $aTOMAR, S. S. 245 $aLifetime reproductive performance of Rambouillet ewes under subtemperate conditions. 260 $c1980 520 $aAbstract : In 55 ewes over a 10-yr period, longevity averaged 6.70 plus or minus 0.25 yr and productive life 4.29 plus or minus 0.25 yr. Annual mortality in adult ewes averaged 20.9%. Overall, 80.14% of ewes exhibited oestrus during the autumn breeding season. 70.94% of ewes mated, and 56.8% of all ewes lambed. The incidence of oestrus was significantly correlated with ewe body weight at mating (0.23 plus or minus 0.07). The lifetime number of lambings averaged 2.96 plus or minus 0.20, the lifetime number of lambs produced 2.80 plus or minus 0.21, the number of ewe lambs produced 1.24 plus or minus 0.14, and annual number of lambings per ewe 0.67 plus or minus 0.03. The survival rate of ewe lambs to 1 yr of age was 32.14%. 650 $aReproduction 650 $aSheep 650 $aEficiência reprodutiva 650 $aOvino 650 $aPerformance 650 $aReprodução animal 700 1 $aMAHAJAN, J. M. 773 $tThe Indian Journal of Animal Sciences$gv. 50, n. 10, p. 838-843, Oct. 1980.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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