Nutrientes digestíveis totais e energia digestível do feno de soja perene (Glycine Javanica L) em diferentes idades
Palavras-chave:
soja perene, digestibilidade aparente, matéria seca, energia digestível, proteína brutaResumo
This work was conducted at the Federal University of Viçosa to study the total digestible nutrients, digestible energy and the caloric
value of the total digestible nutrients of perennial soybean hay (Glycine javanica L.) at 60, 108 and 157 days of age.
Digestibility trials with sheep were run for the determination of the total digestible nutrients. The bomb calorimeter was used for the determination of energy.
The hay was partially cured at the sun and transferred to an open shed where curing was completed. The hay was then coarsely cut and stored in cloth bags.
The hay was fed to sheep by a system where new quantities were fed only after the preceeding feed had been consumed.
The results permit the following conclusions:
1. In contrast to tropical grass forages, the nutritive value of the perennial soybean hay did not decrease greatly from 60 to 157 days of age.
2. With increasing maturity of the perennial soybean plants, the following observation were made:
a) The level od crude protein decreased from 16.45 to 15.44 to 14.10% and the level of crude fiber increased from 37.68 to 37.71 to 38. 85% for the ages respectively.
b) The digestibility of the nutrients decreased with the vege- tative development of the plants. The digestibility of the dry matter, crude protein and crude fiber were 56.86, 61,08 and 48.74%, respectively at 60 days old, decreasing to 52.81, 53.05 and 43.62% at 108 days and again decreasing to 50.91, 58.60 and 39.58% at 157 days.
c) The total digestible nutrients decreased for the three stages of vegetative development from 53. 87 to 50.67 to 48. 54, respectively .
d) The digestibility of the energy decreased for the three stages of development from 54.60 to 50.71 to 49.51%, respectively.
e) The digestible energy decreased for the three stages of development from 2.491 to 2.294 to 2.244 Kcal/kg DM, respectively.
3) The values obtained forthe digestible dry matter were very similar to the value obtained for the total digestible nutrients.
Referências
ASSOCIATION OF.OFFICIAL AGRICULTURAL CHEMISTS. Official methods of analysis. 10th ed. Washington D.C. Ed. Board 1965. 957p.
BRASIL. Instituto Brasileiro de Geografia e Estatística. Anuário Estatístico do Brasil. Rio de Janeiro, 1969. 469p.
BRESSANI, R., JARQUIN, R. & ELLIAS, L.G. Composición química y digestibilidade del Quinamul (Ipommea sagittata, LAB.) y del Pangola (Digitaria decumbens, Stent.) en Guatemala. Turrialba, Costa Rica. Instituto Interamericano de Ciências Agrícolas 8(3):110-116. 1958.
BURCH, H., SCHNEIDER, H., LUCAS, H.L., PAVLECH, H.M. & CIPOLLONI, M.A. Estimation of this digestibility of feeds from their proximate composition. J. Animal Sci,, New York 10(3):706-713. 1951.
BURCH, H., SCHNEIDER, H., LUCAS, H.L., PAVLECH, H.M. & CIPOLLONI, M.A. The prediction of digestibility for feeds for which there are only proximate composition data. J. Animal Sci., New York 11(1):77-83. 1952.
BUTTERWORTH, M. H. Digestibility trials on forages in Trivalue. J. Agric. Sci., Cambridge 60(3):341-345. 1963.
BUTTERWORTH, M. H. The digestible energy content of come tropi- cal forages. J. Agric. Sei., Cambridge 63(3):319-312. 1964.
BUTTERWORTH, M.H. Some aspects of the utilization of tropical forages. J. Agric. Sci., Cambridge 65(2): 233-239. 1965.
CRAMPTON, E.W., LLOYD, L.E. & MacKAY, V.G. The caloric value of TDN. J. Animal Sci., New York 16(3):541-545. 1957 .
DARLINGTON, J. M. & HERSHBERGER, T. V. Effect of forage maturity on digestibility, intake and nutritive value of alfafa , timothy and orchardgrass by equine. J. Animal Sci., New York 27(6):1572-1576. 1968.
FONSECA, J.B. Estudos de digestibilidade de forrageiras tropicais pelo processo convencional. Viçosa, Universidade Rural do Estado de Minas Gerais, 1964. 77p. (Tese de M.S.).
GARCIA, J. A. Efeitos da associação melaço/uréia com silagem de sorgo, feno de soja perene (Glycine javanica L.) e pastagens para bovinos de corte. Viçosa, Universidade Rural do Estado de Minas Gerais, 1968. 36 p. (Tese de M.S.).
HEANEY, D. P. & PIGDEN, W.J. Interrelationship and conversion, factors between expression of the digestible energy value of forages. J. Animal Sci., New York 22(4):956-960. 1963.
JOHNSON, C.M., & ULRICH, A. Analytical methods for use in plantanalysis. University of California Agricultural Espaiment co Bul. no 766. 1959.
LENKEIT, W. &BECKER, N. Inspeção e apreciação de forrageiras. Lisboa, Ministério e Economia de Portugal. 1956. 152 p. Boletim Pecuário no 2.
LLOYD, L. E. ,JEFFERS, H.F. M. ,DONEFFER, E. and CRAMPTON, E. W. Effect of four maturity stages of timothy hay on its chemical compositions, nutrient digestibility and nutritive value index. J. Animal Sci., New York 20(3): 468-473. 1961.
LOFGREEN, G. P. The use of digestible energy in the evaluation of feeds. J. Animal Sci., New York 10(2): 344-351. 1951.
LOFGREEN, G. P. The estimation of total digestible nutrients from digestible organic matter, J. Animal Sci., New York 12(2): 359-365. 1953.
MALAVOLTA, E. Análise química dos teores de elementos totais. In: Curso Internacional de Diagnose Foliar. Piracicaba, 1964. p. 162-183.
MAYNARD, L.A. & LOOSLI, J.K. Animal nutrition. 4th ed, New York, MacGraw-Hill Book Company Inc. 1956. 533 p.
MEYER, J.H. & LOFGREEN, G.P. The estimation of the total digestible nutrients in alfafa from its lignin and crude fiber content. J. Animal Sci,, New York 15(2):543-549. 1956.
MEYER, J.H., WEIR, W. C., JONES, L. G. & HULL, J.C. The influence of stage of maturity on the feeding value of oat hay. J. Animal Sci., New York 16(3): 623-632. 1957.
MINAS GERAIS. UFV. Serviço de Meteorologia, Viçosa - 1957/1968.
OH, H. K., BAUMGARDT, B. R. & SCHOOL, S.M. Evaluation of forages in the laboratory. V. Comparison of chemical analysis solubility tests and "in vitro" fermentation. J. Dairy Sci. ,Illinois 49(7):850-855. 1966.
PEIXOTO, A.M., MORAES, C.L. & PROSPERO, A.D. Contribuição ao estudo da composição química e digestibilidade do feno de soja perene (Glycine javanica L). Anais do Nono Congresso Internacional de Pastagens, D.P.A., São Paulo, 1: 792-795. 1965.
SOSULKI, F. W. & PATTERSON, J. K. Correlations between digestibility and chemical constituents of selected grass varieties. Agron. J., Wisconsin 53(3):145-149. 1961.
STAPLES, G.E. & DINUSSON, W.R. A comparison of the relative accuracy between seven-day and ten-day collection periods in digestion trials. J. Animal Sci. , New York 10(1):244-250. 1951.
SULLIVAN, J.T. Cellulose and lignin in forage grasses and their digestion coefficients. J. Animal Sci., New York 14(3):710-717. 1955.
SULLIVAN, J. T. A rapid method for the determination of acid insoluble lignin in forages and its relation to digestibility. J. Animal Sci., New York 18(4):1292-1298. 1959.
SWIFT, R.W. The caloric value of TDN. J. Animal Sci., New York 16(4):753-756. 1957 a.
SWIFT, R.W. & SULLIVAN, E.F. Composicion y valor nutritivo de los forages. In: Forages. Primera Edición en Español. México, D. F. 1966. p. 59-69.
WALKER, D.M. & HEPBURN, W.R. The relationship between the grass digestible energy and the chemical composition hays. J. Agric, Sci., London 45(3):298-310. 1955.
WATKINS, W. E. & KEARNS, J. H. Jr. The nutritive value of various grasses and grass legume mixtures. J. Animal Sci., New York (1):153-162. 1956.
WEIR, W.C., JONES, L.C. & MEYER, J.H. Effect of cutting internal and stage of maturity on the digestibility and yield of alfafa. J. Animal Sci., New York 19(1): 5-19. 1960.
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