Optimization Tifton-85 grass cutting for productivity and nutrient value





Cynodon spp., Digestibility, Nutritional Value, Tropical Grass.


The objective of this work was to determine the impact of cutting Tifton-85 grass at 14, 28, 42, 46, 70, and 80 days of regrowth on its production and nutritional characteristics during the rainy season. The study area of 238 m2 was divided into four sub-area, with 6 plots of 2 × 2 m spaced 1 m between plots and 2 m between sub-area. Random block design was used. The statistical analyses were performed following a randomized block design. Results were obtained as means from evaluations conducted in two consecutive years. The neutral detergent fiber (NDF) and acid detergent fiber (ADF) increased as the cutting age increased. However, crude protein, NDF nitrogen, ADF nitrogen and leaves/stem relationship decreased as the cutting age increased. The production of digestible dry matter increased linearly as the cutting age increased. Similarly, grass height, green matter and dry matter production (DMP) increased as the cutting age increased. The different cutting age did not influence the nitrogen A, B1 + B2, and B3 fractions of the grass. However, the C fraction increased as the cutting age increased. Longer intervals between cuts increased the grass productivity per cut, but compromised its nutritional composition and leaves/stem relationship. For Tifton -85, the regrowth age of 28 days allows greater production of dry matter and greater accumulated production of crude protein and digestive dry matter in the rainy season or over time.


Download data is not yet available.


ALDERMAN, P., BOOTE, D.K.J. and SOLLENBERGER, L.E. Regrowth dynamics of ‘Tifton 85’ bermudagrass as affected by nitrogen fertilization. Crop Science. 2011, 51(4), 1716-1726. https://doi.org/10.2135/cropsci2010.09.0515

Association of Official Analytical Chemistry (AOAC). Official Methods of Analysis. 16th ed. Washington: AOAC International, 1995.

BOW, J.R. and MUIR, J.P. Dynamics of harvesting and feeding Cynodon hybrid Tifton 85 hay of varying maturities to wether kids. Small Ruminant Research. 2010, 93(2), 198-201. https://doi.org/10.1016/j.smallrumres.2010.04.023

CAMPOS, P.R.S.S., SILVA, J.F.C. and VÁSQUEZ, H.M. Fractions of carbohydrates and of nitrogenous compounds of tropical grasses at different cutting ages. Revista Brasileira de Zootecnia. 2010, 39(7), 1538-1547. https://doi.org/org/10.1590/S1516-35982010000700021

CHIESA, A.P.R., et al. Age of regrowth as a factor affecting the nutritive value of hay of kikuyu grass (Pennisetum clandestinum) offered to lambs. Grass and Forage Science. 2008, 63(2), 193-201. https://doi.org/org/10.1111/j.1365-2494.2007.00624.x

CORRIHER, V.A., et al. Cow and calf performance on Coastal or Tifton-85 bermudagrass pastures with aeschynomene creep-grazing paddocks. Journal of Animal Science. 2007, 85(10), 2762-2771. https://doi.org/10.2527/jas.2007-0015

HILL, G.M., GATES, R.N. and WEST, J.W. Advances in bermudagrass research involving new cultivars for beef and dairy production. Journal of Animal Science. 2001, 79, 48-58. https://doi.org/org/10.2527/jas2001.79E-SupplE48x

JOHNSON, C.R., et al. Effects of nitrogen fertilization and harvest date on yield, digestibilitym fiiber, and protein fractions of tropical grasses. Journal Animal Science. 2001, 79(9), 2439-2448. https://doi.org/org/10.2527/2001.7992439x

JUNG, H.J.G. Analysis of forage fiber and cell walls in ruminant nutrition. American Society for Nutritional Sciences. 1997, 127(5 Suppl), 810-813. https://doi.org/org/10.1093/jn/127.5.810S

LIU, K., et al. Grazing management effects on productivity, nutritive value, and persistence of ‘Tifton 85’ bermudagrass. Crop Science. 2011, 51(1), 353-360. https://doi.org/org/10.2135/cropsci2010.02.0122

MISLEVY, P. and MARTIN F.G. Comparison of Tifton 85 and other Cynodon grasses for production and nutritive value under grazing. Soil Crop Science Society. 1998, 57, 77-82.

OLIVEIRA, R.E., et al. Ruminal degradability of neutral detergent fiber of Cynodon ssp. Grasses at four regrowth ages. Acta Scientiarum Animal Sciences. 2014, 36(2), 201-208. https://doi.org/org/104025/actascianimsdci.v36i2.22469

OWENS, D., BOLAND, T. and MCGEE, M. Effect of grass regrowth interval on intake, rumen digestion and nutrient flow to the omasum in beef cattle. Animal Feed Science and Technology. 2008, 146(1-2), 21-41. https://doi.org/org/10.1016/j.anifeedsci.2007.11.012

RIBEIRO, K.G. and PEREIRA, O.G. Valor nutritivo do capim-tifton 85 sob doses de nitrogênio e idades de rebrotação. Veterinária e Zootecnia. 2010, 17(4), 560-567. https://doi.org/org/10.1590/S1413-70542011000400022

SNIFFEN, C.J., et al. A net carbohydrate and protein system for evaluating cattle diets: II. Carbohydrate and protein availability. Journal of Animal Science. 1992, 70(11), 3562-3577. https://doi.org/org/10.2527/1992.70113562x

TILLEY, J.M.A. and TERRY, R.A.A two-stage technique for the in vitro digestion of forage crops. Grass and Forage Science. 1963, 18(2), 104-111. https://doi.org/10.1111/j.1365-2494.1963.tb00335.x

UNITED STATES DEPARTMENT OF AGRICULTURE. 2003. Available from: https://www.nass.usda.gov/Statistics_by_State/Kansas/Publications/Crops/Hay/hay01

VAN SOEST, P.J. Nutritional ecology of the ruminant. 2nd ed. Ithaca: Cornell University, 1994.

VAN SOEST, P.J., ROBERTSON, J.B. and LEWIS, B.A. Methods for dietary fiber, neutral detergent fiber and nonstarch polysaccharides in relation to animal nutrition. Journal of Dairy Science. 1991, 74(10), 3583-3597.




How to Cite

OTTONI, D., TEIXEIRA, A. de M., GONÇALVES, L.C., DA SILVA, N.T.A., CRUZ, D.S.G.., CÔRTES, I.H.G., DE OLIVEIRA, J.P.C.A. and JAYME, D.G., 2021. Optimization Tifton-85 grass cutting for productivity and nutrient value. Bioscience Journal [online], vol. 37, pp. e37009. [Accessed14 August 2022]. DOI 10.14393/BJ-v37n0a2021-48179. Available from: https://seer.ufu.br/index.php/biosciencejournal/article/view/48179.



Agricultural Sciences