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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
09/02/2017 |
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Data da última atualização: |
10/02/2017 |
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Autoria: |
MORE, T.; RAWAT, J. S. |
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Título: |
Effect of long term intermittent watering of chokla sheep on water intake body weight and water economy under semi arid conditions. |
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Ano de publicação: |
1981 |
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Fonte/Imprenta: |
The Indian Journal of Animal Sciences, v. 51, n. 12, p. 1151-1156, Dec. 1981. |
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Idioma: |
Inglês |
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Conteúdo: |
Observations on water intake, monthly body weights and seasonal water economy in Chokla sheep of the Rajasthan desert, given water once in 24 h (group 1), 48 h (group 2) and 72 h (group 3), were recorded for 1 yr. There were highly significant differences in their weights due to month of weighing and watering treatment. The water intake and body weights were significantly correlated during summer. Water deprivation for 48 and 72 h resulted in 9.4 and 19.0% body weight loss, respectively. After 1 yr, groups 1, 2 and 3 gained 25.1, 10.9 and 1.3%, respectively, in their weights. These differences were apparently reduced when compared on the basis of post-watering weights. Animals watered once in 72 h were able to drink 32.7% of their lost body weight, although there was only 11% actual possible weight loss of body tissues during summer. By watering 100 ewes once in 72 h it was possible to save enough water to serve an additional 60 sheep. Thus, Chokla ewes may be given water once in 48 or 72 h without adverse effects on body weight or production. |
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Palavras-Chave: |
Alimento para aniaml; Ingestão de água; Peso corporal; Restrição de água; Water intake. |
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Thesagro: |
Nutrição animal; Ovelha; Ovino; Produção animal. |
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Thesaurus Nal: |
Animal nutrition; Ewes; Restricted feeding. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Soja. Para informações adicionais entre em contato com valeria.cardoso@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
11/12/2003 |
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Data da última atualização: |
21/11/2005 |
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Autoria: |
GERMANO, M. G.; HUNGRIA, M. |
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Título: |
Ribosomal phylogeny of a brazilian collection of bradyrhizobium symbionts of thirty-three legume species. |
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Ano de publicação: |
2003 |
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Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE MICROBIOLOGIA, 22., 2003, Florianópolis. [Resumos]. Florianópolis: Sociedade Brasileira de Microbiologia, 2003. |
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Descrição Física: |
1 CD-ROM. |
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Idioma: |
Português |
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Notas: |
Seção: Microbiologia de Solos. |
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Conteúdo: |
Many species of the family Leguminosae (Fabaceae) establish effective symbioses with N2-fixing bacteria in the genus Bradyrhizobium, which is relatively poorly studied despite wide geographic distribution and legume-host range. Genetic diversity seems to be greater in tropical than in temperate species of rhizobia, thus three ribosomal regions of a Brazilian culture collection of 119 strains of Bradyrhizobium, isolated from thirty-three legume species, representing nine tribes and all three subfamilies, were analyzed by RFLP-PCR. For the 16S rRNA gene, reference strains of B. japonicum fit into two major clusters, joined at a level of similarity of 50%, which included forty-seven strains, 90% of which were isolated from soybean, while two other clusters, joined at a similarity of 53%, were composed of strains of B. elkanii. Furthermore, three other major clusters were identified in which all strains were clustered at a final level of similarity of only 28%. For the intergenic spacer region (ITS), strains were clustered at a final level of similarity of 27%; reference strains of B. japonicum fit into a major group at 37% of similarity that included fifty-six strains, 84% isolated from soybean, while strains of B. elkanii fit into another major group, at a 44% level of similarity, clustering fifty-three strains, 64% isolated from other hosts than soybean. New clusters were also observed for the ITS region. The highest variability was detected in the analysis of the 23S rRNA gene with many distinct clusters and a very low level of similarity (16%) in the final grouping of the strains. A polyphasic approach, considering the three ribosomal regions, confirmed two great groups, related to B. japonicum and B. elkanii, at similarity levels of 54 and 46%, respectively. However, subclusters were defined within those two groups, and might be related to intraspecific variability, or to new subspecies, or even to new species. Furthermore, at least two new clusters were observed that might represent new species. The majority of strains isolated from soybean fit into the species B. japonicum, while most strains isolated from Brazilian legume species fit into B. elkanii or into the new clusters. The collection of bradyrhizobia analyzed in this study showed a genetic variability never reported before, confirming a high level of diversity of rhizobia in the tropics.
Partially financed by CNPq (PRONEX-and 520396/96-0). MenosMany species of the family Leguminosae (Fabaceae) establish effective symbioses with N2-fixing bacteria in the genus Bradyrhizobium, which is relatively poorly studied despite wide geographic distribution and legume-host range. Genetic diversity seems to be greater in tropical than in temperate species of rhizobia, thus three ribosomal regions of a Brazilian culture collection of 119 strains of Bradyrhizobium, isolated from thirty-three legume species, representing nine tribes and all three subfamilies, were analyzed by RFLP-PCR. For the 16S rRNA gene, reference strains of B. japonicum fit into two major clusters, joined at a level of similarity of 50%, which included forty-seven strains, 90% of which were isolated from soybean, while two other clusters, joined at a similarity of 53%, were composed of strains of B. elkanii. Furthermore, three other major clusters were identified in which all strains were clustered at a final level of similarity of only 28%. For the intergenic spacer region (ITS), strains were clustered at a final level of similarity of 27%; reference strains of B. japonicum fit into a major group at 37% of similarity that included fifty-six strains, 84% isolated from soybean, while strains of B. elkanii fit into another major group, at a 44% level of similarity, clustering fifty-three strains, 64% isolated from other hosts than soybean. New clusters were also observed for the ITS region. The highest variability was detected in the analysis of the 23S rRNA ge... Mostrar Tudo |
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Registro original: |
Embrapa Soja (CNPSO) |
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