Harvest frequency affects herbage accumulation and nutritive value of brachiaria grass hybrids in Florida

Vendramini, J. M. B.; Sollenberger, Lynn E.; Soares, André Brugnara; Silva, Wilton Ladeira da; Sanchez, J. M. D.; Valente, Andre L.S.; Aguiar, André D.; Mullenix, Mary K

doi:10.17138/tgft(2)197-206

Cited by 37 publications

(39 citation statements)

References 15 publications

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“…En Florida, en una evaluación con cultivares de Mulato II (B. ruziziensis clon 44-6 x B. brizantha cv Marandu) y Cayman (Brachiaria líneas híbridas BR02/1794 y BR02/1752) fertilizados con 144 kg N, y 112 kg K ha -1 , se tuvieron concentraciones decrecientes de PC (17.4, 14.2, y 11.8 %), a 2, 4 y 6 semanas de corte, respectivamente (38) , estimando que la fertilización favoreció valores de PC mayores que los del presente trabajo.…”

Section: Chemical Compositionunclassified

“…In Florida evaluating the cultivars Mulato II (B. ruziziensis clone 44-6 x B. brizantha cv Marandu) and Cayman (Brachiaria hybrids lines BR02/1794 and BR02/1752) fertilized with 144 kg N, and 112 kg K ha -1 , had decreasing CP content, (17.4, 14.2, and 11.8 %) were observed as regrowth interval increased from 2, to 4 and 6 wk, respectively (38) , estimating that these values higher than those of the present study, could be probably due to fertilization.…”

Section: Degradabilidad In Situ De La Materia Seca (Dims)mentioning

confidence: 99%

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Rendimiento y degradabilidad ruminal de materia seca y energía de diez pastos tropicales cosechados a cuatro edades

Mora

Castillo-Gallegos

Barragán

2016

Rev. Mex. Cienc. Pecu.

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RESUMENEl presente trabajo se realizó con el objetivo de determinar el rendimiento de materia seca (RMS), y la degradabilidad ruminal de la materia seca (MS) y la energía, de diez pastos de los géneros Brachiaria: B. brizantha (Insurgente), B. decumbens (Señal), B. humidicola (Chetumal), B. brizantha x B. ruzieziensis (Mulato I); Panicum: P. maximum cv. Mombasa, P. maximum cv. Guinea, P. maximum cv. Tanzania; y Pennisetum: P. purpureum cv. Taiwan, P. purpureum cv. Cuban king grass, P. purpureum cv. Purple king grass, a 3, 6, 9 y 12 semanas de rebrote, en tres ciclos de crecimiento. La degradabilidad ruminal de MS y energía se determinó a 48 h de incubación in situ. El RMS fue 3,037, 1,689 y 1,872 kg ha -1 , para Pennisetum, Brachiaria y Panicum (P<0.05). La PC disminuyó de 11.6 a 6.9 % (3 a 12 semanas), sin diferencias entre géneros. ABSTRACTThe objective of the study was to determine dry mater yield (DMY), and in situ ruminal degradable dry matter and energy of ten grasses of the genera Brachiaria: B. brizantha (Insurgente), B. decumbens (Señal), B. humidicola (Chetumal), B. brizantha x B. ruzieziensis (Mulato I); Panicum: P. maximum cv. Mombasa, P. maximum cv. Guinea, P. maximum cv. Tanzania; and, Pennisetum: P. purpureum cv. Taiwan, P. purpureum cv. Cuban king grass, P. purpureum cv. Purple king grass, at 3, 6, 9 and 12 wk of regrowth, in three evaluation cycles. DMY for Pennisetum, Brachiaria and Panicum was: 3,037, 1,689 and 1,872 kg ha -1 (P<0.05). CP concentration decreased from 11.6 to 6.9 % (3 to 12 wk), without differences among genera. Concentration (%) of NDF, ADF and LIG were: 72.1, 43.5 and 8.1 (Brachiaria); 73.0, 45.8 and 9.0 (Panicum); and 68.8, 44.4 and 9.1 % (Pennisetum), values were 68.1, 40.1 and 8.2 (at 3 wk); and 76.2, 49.7 and 9.5 (at 12 wk). The in situ DM degradability was: 70.0 % (Brachiaria), 65.8 % (Panicum) and 72.9 % (Pennisetum) and decreased from 71.7 to 62.9 % (from 3 to 12 wk). Gross energy (GE) preincubation, was 3,802, 3,756, and 3,608 kcal kg -1 DM, for Brachiaria, Panicum, and Pennisetum, with no changes due to age of regrowth. In situ ruminal energy degradability (as % of incubated GE) was: 55.6, 51.4, and 57.9 % for Brachiaria, Panicum; and Pennisetum. In conclusion, age of regrowth and genus affected the nutritive value of the evaluated grasses. INTRODUCCIONEn las regiones tropicales, los sistemas de producción bovina están basados en el pastoreo de gramas nativas (1) , cuya productividad varía en cantidad y calidad (2) , por lo que es importante la selección efectiva e introducción de pastos de alta calidad nutricional, y alta producción forrajera, adaptados a las condiciones locales de clima, suelo y manejo (3) .La edad del pasto al corte o pastoreo afecta la calidad y digestibilidad de las pasturas (4,5) , debido a un incremento en la proporción de pared celular respecto al contenido celular, así como en mayor cantidad de tallos y material muerto en la planta conforme ésta madura. Los pastos con baja digestibilidad retardan el paso del alimento a través del tracto di...

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Section: Chemical Compositionunclassified

Section: Degradabilidad In Situ De La Materia Seca (Dims)mentioning

confidence: 99%

Rendimiento y degradabilidad ruminal de materia seca y energía de diez pastos tropicales cosechados a cuatro edades

Mora

Castillo-Gallegos

Barragán

2016

Rev. Mex. Cienc. Pecu.

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“…Brachiaria grasses are among the most important tropical grasses that originated from Africa and improved in Americas through agronomic selection and breeding (Miles et al, 2004). They have demonstrated to be highly productive, nutritive and socially acceptable in Asia and Africa for different livestock production systems (Vendramini et al, 2014). In tropical areas, the most sensitive attributes to management are metabolisable energy (ME) and crude protein (CP) contents as well as macro and microminerals.…”

Section: Introductionmentioning

confidence: 99%

Effect of cutting time on agronomic and nutritional characteristics of nine commercial cultivars of Brachiaria grass compared with Napier grass during establishment under semi-arid conditions in Rwanda

Mutimura¹,

Ebong²,

Rao³

et al. 2017

Afr. J. Agric. Res.

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A study was conducted to identify the most productive cultivars and their cutting management to optimize nutrient productivity in semi-arid areas of Rwanda. Four cultivars of Brachiaria brizantha (Piatá, MG4, Marandú and Xaraes), two cultivars of Brachiaria humidicola (Llanero and Humidicola), two cultivars of Brachiaria hybrid (Mulato and Mulato II) and one cultivar of Brachiaria decumbens (Basilisk) were evaluated against Napier grass (Pennisetum purpureum) in an on-farm trial in a complete randomised block design with four replicates. Forage samples were collected at 60, 90 and 120 days after planting (DAP) and analysed for dry matter (DM), crude protein (CP), organic matter (OM) and neutral detergent fibre (NDF). The nutritional values were also estimated using in vitro gas production (IVGP) and its kinetic parameters, in vitro apparent degradable dry matter (ivADDM), digestible organic matter (DOM), metabolisable energy (ME), partitioning factor (PF) and degradable efficiency factor (DEF). For all cultivars and species, the DM, CP, OM, ivADDM and DOM increased from 60 to 90 DAP and declined thereafter. The NDF contents increased with increase in plant age. Grasses cut at 90 DAP had the highest gas production. The ME differed among grasses and DAP where Piatá had the highest. Furthermore, degradability parameters (A, B, C) and half time (T 1/2 ) differed among grasses and between cutting times. The PF and DEF were correlated with ME. The most promising cultivars were Basilisk, Marandú, Piatá and Mulato II because of their high in these nutritional characteristics.Key words: Chemical composition, metabolisable energy, degradability parameters, degradation efficiency factor. INTRODUCTIONIntensification of ruminant livestock production is gaining momentum in a number of sub-Saharan African countries due to increasing population pressure and decline in grazing areas (Thornton and Herrero, 2014). Even farmers with access to open grazing land experience frequent feed shortage due to climate change and variability (Chirat et al., 2014).Feeds and feeding, especially for dairy cows are a critical issue for smallholder farmers in Rwanda, mostly during the dry season (Klapwijk et al., 2014). In the tropics, grasses are the most ecologically reliable and economically justifiable feed resources (Pedreira et al., 2011) because of their morphological characteristics which enable efficient water use, and rapid recovery after periods of drought (Batistoti et al., 2012). Therefore, improving tropical forages is essential for environmental protection and sustainable livestock feed and food futures for livestock and people (Baudron et al., 2015). Brachiaria grasses are among the most important tropical grasses that originated from Africa and improved in Americas through agronomic selection and breeding (Miles et al., 2004). They have demonstrated to be highly productive, nutritive and socially acceptable in Asia and Africa for different livestock production systems (Vendramini et al., 2014). In tropical areas, the most sensitiv...

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“…Diante desse cenário de fortes mudanças, o Brasil surge como um país com imenso potencial para atender essa crescente demanda por possuir características favoráveis para tal, como vasta extensão territorial e condições climáticas adequadas (DIAS-FILHO, 2015 et al, 2014). O país apresenta, assim, uma grande monocultura desse capim (VIGNA et al, 2011), que, apesar da inquestionável importância na produção de bovinos, tem sido acometido da síndrome da morte do capim-braquiarão (PEDREIRA et al, 2014 (INYANG et al, 2010;VENDRAMINI et al, 2012) o que faz dele uma boa opção para diversificação das pastagens brasileiras.…”

Section: Introductionunclassified

“…Alguns trabalhos avaliando esse novo genótipo foram conduzidos sob regime de colheita mecânica (HARE; TATSPONG; PHENGPHET, 2009;VENDRAMINI et al, 2012;HARE et al, 2013;VENDRAMINI et al, 2014;PEQUENO et al, 2015) e também sob pastejo com lotação intermitente (TEODORO, 2011;DEMSKI, 2013 Os produtores envolvidos nessas cadeias produtivas estão tendo que se tornar cada vez mais eficientes na sua forma de produzir. As mudanças ocorridas nos últimos anos -como a estabilização da moeda e a competição pelo uso da terra exercida por outras alternativas agrícolas como a soja (Glycine max L. Merril) e, mais recentemente, a cana-de-açúcar (Saccharum officinarum L.) e oleaginosas para produção de biocombustíveis -exigem maior produtividade e competitividade em seus sistemas de produção (BARCELLOS et al, 2008).…”

Section: Introductionunclassified

Acúmulo de forragem e contribuição relativa de categorias de folhas na fotossíntese do dossel do capim Mulato II pastejado sob taxas contrastantes de crescimento e alturas do dossel

Yasuoka¹

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Harvest frequency affects herbage accumulation and nutritive value of brachiaria grass hybrids in Florida

Cited by 37 publications

References 15 publications

Rendimiento y degradabilidad ruminal de materia seca y energía de diez pastos tropicales cosechados a cuatro edades

Rendimiento y degradabilidad ruminal de materia seca y energía de diez pastos tropicales cosechados a cuatro edades

Effect of cutting time on agronomic and nutritional characteristics of nine commercial cultivars of Brachiaria grass compared with Napier grass during establishment under semi-arid conditions in Rwanda

Acúmulo de forragem e contribuição relativa de categorias de folhas na fotossíntese do dossel do capim Mulato II pastejado sob taxas contrastantes de crescimento e alturas do dossel

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