Yield and nutritional value of BRS Capiaçu grass at different regrowth ages
DOI:
https://doi.org/10.5433/1679-0359.2019v40n5p2045Keywords:
Ruminal kinetics, Chemical composition. Forage, Pennisetum purpureum, Forage production.Abstract
The objective was to evaluate the productivity, chemical composition, ruminal degradability of dry matter and digestibility of BRS capiaçu grass (Pennisetum purpureum Schum.) managed at five regrowth ages. A completely randomized design with ten replications was used in the BRS capiaçu elephant grass subjected to five cutting intervals (30, 60, 90, 120 and 150 days) in the summer, making a total of 50 plots with a useful area of 4 x 2 m. There were daily increases in the dry matter production in the order of 382 kg ha-1, with 49,859 kg ha-1 being produced at 150 regrowth days. The dry matter content and organic matter linearly increased (P < 0.01) at different regrowth ages. The crude protein content, in vitro dry matter digestibility and in vitro digestibility of neutral detergent fiber linearly reduced (P < 0.01) 0.037%, 0.196% and 0.256% per day, respectively. Potential degradability of dry matter decreased from 68.9% at 30 days to 44.7% at 150 regrowth days (0.194 percentage units per day). The rate of degradation of fraction B 'c' was not modified (P = 0.94), averaging 1.46% hour-1. In the cultivation of BRS capiaçu elephant grass in the summer season, in the northern region of Minas Gerais, the age for harvesting between 90 and 120 days of regrowth is recommended.Downloads
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References
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BORREANI, G.; TABACCO, E.; SCHMIDT, R. J.; HOLMES, B. J.; MUCK, R. E. Silage review: factors affecting dry matter and quality losses in silages. Journal of Dairy Science, Madison, v. 101, n. 1, p. 3952-3979, 2018. DOI: 10.3168/jds.2017-13837
CASALI, A. O.; DETMANN, E.; VALADARES FILHO, S. C.; PEREIRA, J. C.; CUNHA, M.; DETMANN, K. S. C.; PAULINO, M. F. Estimação de teores de componentes fibrosos em alimentos para ruminantes em saco de diferentes tecidos. Revista Brasileira de Zootecnia, Viçosa, MG, v. 38, n. 1, p. 130-138, 2009. DOI: 10.1590/S1516-35982009000100017
DETMANN, E.; SOUZA, M. A.; VALADARES FILHO, S. C.; QUEIROZ, A. C.; BERCHIELLI, T. T. Methods for food analysis. Visconde do Rio Branco, Viçosa, MG: Suprema, 2012. 214 p.
DETMANN, E.; VALENTE, E. E. L.; BATISTA, E. D.; HUHTANEN, P. An evaluation of the performance and efficiency of nitrogen utilization in cattle fed tropical grass pastures with supplementation. Livestock Science, Amsterdam, v. 162, n. 1, p. 141-153, 2014. DOI: 10.1016/j.livsci.2014.01.029
FERRARETTO, L. F.; SHAVER, R. D.; LUCK, B. D. Silage review: recent advances and future technologies for whole-plant and fractionated corn silage harvesting. Journal of Dairy Science, Madison, v. 101, n. 1, p. 3937-3951, 2018. DOI: 10.3168/jds.2017-13728
GOERING, H. K.; VAN SOEST, P. J. Forage fiber analysis: apparatus, reagents, procedures and some applications. Washington: USDA, 1970. 20 p.
INSTITUTO NACIONAL DE METEREOLOGIA - INMET. Estações e dados/dados metereológicos. Brasília: On line, 2018. Disponível em: http://www.inmet.gov.br/portal/ . Acesso em: 27 jul. 2018.
JUNG, H. G.; DEETZ, D. A. Cell wall lignification and degradability. In: JUNG, H. G.; BUXTON, D. R.; HATFIELD, R. D.; RALPH, J. Forage cell wall structure and digestibility. Madison: American Society of Agronomy, 1993. p. 315-346.
NATIONAL RESEARCH COUNCIL - NRC. Nutrient requirements of dairy cattle. 7th rev. ed. Washington: National Academy Press, 2001.
NETER, J.; WASSERMAN, W.; KUTNER, M. H. Applied linear statistical models. Regression, analysis of variance, and experimental designs. 2th ed. Lake Tahoe: Richard D. Irwin, Inc., 1985. 1127 p.
NOCEK, J. E. In situ and other methods to estimate ruminal protein and energy digestibility: a review. Journal of Dairy Science, Madison, v. 71, n. 8, p. 2051-2069, 1988. DOI: 10.3168/jds.S0022-0302(88)79781-7
ØRSKOV, E. R.; MCDONALD, I. The estimation of degradability in the rumen form incubation measurement weighted according to rate of passage. Journal of Agricultural Science, Cambridge, v. 92, n. 1, p. 499-508, 1979. DOI: 10.1017/S0021859600063048
PEREIRA, A. V.; LÉDO, F. J. S.; MACHADO, J. C. BRS Kurumi and BRS Capiaçu - new elephant grass cultivars for grazing and cut-and-carry system. Crop Breeding and Applied Biotechnology, Viçosa, MG, v. 17, n. 1, p. 59-62, 2017. DOI: 10.1590/1984-70332017v17n1c9
REBOITA, M. S.; RODRIGUES, M.; SILVA, L. F.; ALVES, M. A. Aspectos climáticos do estado de minas gerais. Revista Brasileira de Climatologia, Curitiba, v. 17, n. 1, p. 206-226, 2015. DOI: 10.5380/abclima.v17i0.41493
RIGUEIRA, J. P. S.; MONÇÃO, F. P.; SALES, E. C. J.; REIS, S. T.; BRANT, L. M. S.; CHAMONE, J. M. A.; ROCHA JÚNIOR, V. R.; PIRES, D. A. A. Fermentative profile and nutritional value of elephant grass silage with different levels of crude glycerin. Semina: Ciências Agrárias, Londrina, v. 39, n. 2, p. 833-844, 2018. DOI: 10.5433/1679-0359.2018v39n2p833
ROBERTSON, J. B.; VAN SOEST, P. J. The detergent system of analysis and its application to human foods. In: JAMES, W. P. T.; THEANDER, O. The analysis of dietary fiber in food. New York: Marcel Dekker, 1981. p. 1 23-158.
RUSSELL, J. B.; O’CONNOR, J. D.; FOX, D. G.; VAN SOEST, P. J.; SNIFFEN, C. J. A net carbohydrate and protein system for evaluating cattle diets: I. Ruminal fermentation. Journal of Animal Science, Champaign, v. 70, n. 12, p. 3551-3561, 1992.
SAMPAIO, R. L.; RESENDE, F. D.; REIS, R. A.; OLIVEIRA, I. M.; CUSTÓDIO, L.; FERNANDES, R. M.; PAZDIORA, R. D.; SIQUEIRA, G. R. The nutritional interrelationship between the growing and finishing phases in crossbred cattle raised in a tropical system. Tropical Animal Health and Production, Edinburgh, v. 49, n. 5, p. 1015-1024, 2017. DOI: 10.1007/s11250-017-1294-8
SANTOS, M. E.; SOUSA, B. M. L.; ROCHA, G. O.; FREITAS, C. A. S.; SILVEIRA, M. C. T.; SOUSA, D. O. C. Sward structure and tiller characteristics in piatã grass pastures managed with variable nitrogen doses and deferment periods. Ciência Animal Brasileira, Goiânia, v. 18, n. 1-13, p. 1-13, 2017. DOI: 10.1590/1089-6891v18e-37547
SNIFFEN, C. J.; O'CONNOR, J. D.; VAN SOEST, P. J.; FOX, D. G.; RUSSELL, J. B. A net carbohydrate and protein system for evaluating cattle diets: II. Carbohydrate and protein availability. Journal Dairy Science, Madison, v.70, n.11, p. 3562-3577, 1992.
STATISTICAL ANALYSIS SYSTEM INSTITUTE - SAS Institute. SAS/STAT 9.2 User’s Guide. Cary: SAS Institute, Inc., 2008.
TILLEY, J. M. A.; TERRY, R. A. A two-stage technique for the in vitro digestion of forage crops. Journal of the British Grassland Society, Londres, v. 18, n. 2, p. 104-111, 1963. DOI: 10.1111/j.1365-2494.1963.tb00335.x
VAN SOEST, P. J. Nutritional ecology of the ruminant. 2th ed. Corvallis: O & B Books, 1994. 415 p.
VELÁSQUEZ, P. A. T.; BERCHIELLI, T. T.; REIS, R. A.; RIVERA, A. R.; DIAN, P. H. M.; TEIXEIRA, I. A. M. A. Composição química, fracionamento de carboidratos e proteínas e digestibilidade in vitro de forrageiras tropicais em diferentes idades de corte. Revista Brasileira de Zootecnia, Viçosa, MG, v. 39, n. 6, p. 1206-1213, 2010. DOI: 10.1590/S1516-35982010000600007
WIJITPHAN, S.; LORWILAI, P.; ARKASEANG, C. Effect of cutting heights on productivity and quality of king Napier grass (Pennisetum purpureum cv. King grass) under irrigation. Pakistan Journal of Nutrition, Sargodha, v. 8, n. 8, p. 1244-1250, 2009. DOI: 10.3923/pjn.2009.1244.1250
WILSON, J. R. Cell wall characteristics in relation to forage digestion by ruminants: review. Journal Agriculture Science, Cambridge, v. 122, n. 2, p. 173-182, 1994. DOI: 10.1017/S0021859600087347
ZAILAN, M. Z.; YAAKU, H.; JUSOH, S. Yield and nutritive value of four Napier (Pennisetum purpureum) cultivars at different harvesting ages. Agriculture and Biology Journal of North America, Salt Lake City, v. 7, n. 5, p. 213-219, 2016. DOI: 10.5251/abjna.2016.7.5.213.219
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2019-07-04
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Monção, F. P., Costa, M. A. M. S., Rigueria, J. P. S., Moura, M. M. A., Rocha Júnior, V. R., Gomes, V. M., … Chamone, J. M. A. (2019). Yield and nutritional value of BRS Capiaçu grass at different regrowth ages. Semina: Ciências Agrárias, 40(5), 2045–2056. https://doi.org/10.5433/1679-0359.2019v40n5p2045
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