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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
16/08/2021 |
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Data da última atualização: |
16/08/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MARCELINO, L. L.; MOREIRA, G. R.; SOUZA SOBRINHO, F. de; ALMEIDA, M. I. V. de; COSER, A. C.; CUNHA, G. de M.; BENITES, F. R. G. |
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Afiliação: |
LUCIANA LINHARES MARCELINO, Universidade Federal do Espírito Santo; GISELE RODRIGUES MOREIRA, Universidade Federal do Espírito Santo; FAUSTO DE SOUZA SOBRINHO, CNPGL; MARIA IZABEL VIEIRA DE ALMEIDA, Universidade Federal do Espírito Santo; ANTÔNIO CARLOS CÓSER, Pesquisador aposentado, Embrapa Gado de Leite; GLÁUCIO DE MELLO CUNHA, Universidade Federal do Espírito Santo; FLAVIO RODRIGO GANDOLFI BENITES, CNPGL. |
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Título: |
Nutritive value of improved populations Brachiaria ruziziensis. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Semina. Ciências Agrárias, Londrina, v. 41, n. 1, p. 323-334, jan./fev. 2020. |
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DOI: |
https://doi.org/10.5433/1679-0359.2020v41n1p323 |
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Idioma: |
Inglês |
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Conteúdo: |
A low number of Brachiaria ruziziensis (Syn. Urochloa) cultivars available on the market and a lack of information about its forage potential have made it difficult to expand its cultivated area, and have therefore made it necessary to implement a breeding program for this species. Thus, the objective of this work was to evaluate the nutritional value of ten improved populations of Brachiaria ruziziensis (Syn. Urochloa) and two controls (B. ruziziensis cv. Kennedy and B. brizantha cv. Marandu). The experimental design was a randomized block design with three replications in five sections. The data were submitted to analysis of variance in the subdivided plot in which the primary factors were the populations and the secondary cuts. The Tukey test was used at 5% of significance for the comparison of means. The genotypes used came from the third recurrent selection cycle of Embrapa dairy cattle, originating from the interbreeding of clones which had been identified as superior. The height of the cuts was 10 cm in relation to the ground. The material was cut and weighed in the field to obtain the sample weights to determine the nutritional forage value. After drying, the samples were ground in 1 mm sieves for chemical analyzes and in vitro digestibility. The best CP, ADF and NDF levels observed in IV populations (lower levels of ADF and NDF at 93 days of cut interval and lower NDF contents at 35 and 41 days of cut interval), population VI (higher CP content in the interval of 93 days, lower DM content at 64 and 93 days of cut interval, and lower NDF content at 35 and 64 days of cut interval) showed that these populations can be evaluated under grazing even at an advanced maturation stage. The objective of these selections was to evaluate the nutritional value of improved populations of Brachiaria ruziziensis (Syn. Urochloa) in order to obtain more homogeneous populations for implantation of grazing experiments. MenosA low number of Brachiaria ruziziensis (Syn. Urochloa) cultivars available on the market and a lack of information about its forage potential have made it difficult to expand its cultivated area, and have therefore made it necessary to implement a breeding program for this species. Thus, the objective of this work was to evaluate the nutritional value of ten improved populations of Brachiaria ruziziensis (Syn. Urochloa) and two controls (B. ruziziensis cv. Kennedy and B. brizantha cv. Marandu). The experimental design was a randomized block design with three replications in five sections. The data were submitted to analysis of variance in the subdivided plot in which the primary factors were the populations and the secondary cuts. The Tukey test was used at 5% of significance for the comparison of means. The genotypes used came from the third recurrent selection cycle of Embrapa dairy cattle, originating from the interbreeding of clones which had been identified as superior. The height of the cuts was 10 cm in relation to the ground. The material was cut and weighed in the field to obtain the sample weights to determine the nutritional forage value. After drying, the samples were ground in 1 mm sieves for chemical analyzes and in vitro digestibility. The best CP, ADF and NDF levels observed in IV populations (lower levels of ADF and NDF at 93 days of cut interval and lower NDF contents at 35 and 41 days of cut interval), population VI (higher CP content in the interval of 93... Mostrar Tudo |
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Thesagro: |
Capim Brachiaria; Forragem; Melhoramento Vegetal; Nutrição Animal. |
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Thesaurus Nal: |
Animal nutrition; Forage; Plant breeding. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/225188/1/Nutritive-value-improved.pdf
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Marc: |
LEADER 02818naa a2200289 a 4500
001 2133579
005 2021-08-16
008 2020 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.5433/1679-0359.2020v41n1p323$2DOI
100 1 $aMARCELINO, L. L.
245 $aNutritive value of improved populations Brachiaria ruziziensis.$h[electronic resource]
260 $c2020
520 $aA low number of Brachiaria ruziziensis (Syn. Urochloa) cultivars available on the market and a lack of information about its forage potential have made it difficult to expand its cultivated area, and have therefore made it necessary to implement a breeding program for this species. Thus, the objective of this work was to evaluate the nutritional value of ten improved populations of Brachiaria ruziziensis (Syn. Urochloa) and two controls (B. ruziziensis cv. Kennedy and B. brizantha cv. Marandu). The experimental design was a randomized block design with three replications in five sections. The data were submitted to analysis of variance in the subdivided plot in which the primary factors were the populations and the secondary cuts. The Tukey test was used at 5% of significance for the comparison of means. The genotypes used came from the third recurrent selection cycle of Embrapa dairy cattle, originating from the interbreeding of clones which had been identified as superior. The height of the cuts was 10 cm in relation to the ground. The material was cut and weighed in the field to obtain the sample weights to determine the nutritional forage value. After drying, the samples were ground in 1 mm sieves for chemical analyzes and in vitro digestibility. The best CP, ADF and NDF levels observed in IV populations (lower levels of ADF and NDF at 93 days of cut interval and lower NDF contents at 35 and 41 days of cut interval), population VI (higher CP content in the interval of 93 days, lower DM content at 64 and 93 days of cut interval, and lower NDF content at 35 and 64 days of cut interval) showed that these populations can be evaluated under grazing even at an advanced maturation stage. The objective of these selections was to evaluate the nutritional value of improved populations of Brachiaria ruziziensis (Syn. Urochloa) in order to obtain more homogeneous populations for implantation of grazing experiments.
650 $aAnimal nutrition
650 $aForage
650 $aPlant breeding
650 $aCapim Brachiaria
650 $aForragem
650 $aMelhoramento Vegetal
650 $aNutrição Animal
700 1 $aMOREIRA, G. R.
700 1 $aSOUZA SOBRINHO, F. de
700 1 $aALMEIDA, M. I. V. de
700 1 $aCOSER, A. C.
700 1 $aCUNHA, G. de M.
700 1 $aBENITES, F. R. G.
773 $tSemina. Ciências Agrárias, Londrina$gv. 41, n. 1, p. 323-334, jan./fev. 2020.
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Embrapa Gado de Leite (CNPGL) |
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