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Phosphorus Supplementation of Ammoniated Rice Straw on Rumen Fermentability, Syntesised Microbial Protein and Degradabilityin Vitro

Authors: Mardiati Zain, N. Jamarun, A. S. Tjakradidjaja

Abstract:

The effect of phosphorus supplementation of ammoniated rice straw was studied. The in vitro experiment was carried out following the first stage of Tilley and Terry method. The treatments consisting of four diets were A = 50% ammoniated rice straw + 50% concentrate (control), B = A + 0.2% Phosphor (P) supplement, C = A + 0.4% Phosphor (P) supplement, and D = A + 0.6% Phosphor (P) supplement of dry matter. Completely randomized design was used as the experimental design with differences among treatment means were examined using Duncan multiple range test. Variables measured were total bacterial and cellulolytic bacterial population, cellulolytic enzyme activity, ammonia (NH3) and volatile fatty acid (VFA) concentrations, as fermentability indicators and synthesized microbial protein, as well as degradability indicators including dry matter (DM), organic matter (OM), neutral detergent fibre (NDF), acid detergent fibre (ADF) and cellulose. The results indicated that fermentability and degradability of diets consisting ammoniated rice straw with P supplementation were significantly higher than the control diet (P< 0.05). It is concluded that P supplementation is important to improve fermentability and degradability of rations containing ammoniated RS and concentrate. In terms of the most effective level of P supplementation occurred at a supplementation rate of 0.4% of dry matter.

Keywords: Ammoniated rice straw, phosphorus, fermentability, degradability and synthesized microbial protein.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1071748

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References:


[1] Van Soest, P.J. 2006. Rice straw the role of silica and treatment to improve quality. J.Anim.Feed. Sci. and Technology Volume 130, pp. 137-171.
[2] Patterson, J. 2002.. Proc. 37th Pac NW Anim Nutr Conf. pp. 11-19.
[3] Tilley, J. M., and R. A. Terry. 1969. A two stage technique for in vitro digestion of forage crops. Journal of British Grassland Society 18 (2), pp 104 - 111
[4] AOAC. 1990. Official methods of analysis. 15th edn. Association of Official Analytical Chemists, Arlington, Virginia.
[5] Goering, H.K. and Van Soest, P.J. 1970. Forage fiber analysis(apparatus, reagents, procedure and some applications. In: United`States Department of Agricultural (Ed), Agricultural Handbook, 379. US government printing Office, Washinggton D.C., pp 1-20
[6] Suryahadi. 1990. Penuntun praktikum Ilmu Nutrisi Ruminansia. Pusat Antar Universitas Ilmu Hayat. IPB. Bogor
[7] Widyastuti, A.T. 2005. Isolasi dan uji kemampuan bakteri simbion rayap pendegradasi serat. Skripsi. Fakultas Peternakan. Institut Pertanian Bogor.
[8] Gopar, A.H., 1981. Pengaruh perubahan laju penggantian isi rumen terhadap kegiatan metabolisme mikrobanya dalam kondisi in vitro. Skripsi. Fakultas Peternakan. Institut Pertanian Bogor.
[9] Steel, R.G.D. and J.H. Torrie. 1980. Principles and Procedure of Statistics. McGraw-Hill Book Co. Inc. New York.
[10] Komizarczuk, S., and Durand M. 1991. Effect of mineral on microbial metabolism. In. Rumen Microbial Metabolism and Ruminant Digestion. J.P. Jouany (Ed) INRA publ. Versailes, France
[11] Bravo, D., D. Sanvant, C. Bogaert and F. Meschy. 2003. Quantitative aspect of phosphorus absorbtion in ruminant. Reprod. Nutr. Dev. 43: 271-284. INRA. EDP. Sciences.
[12] Durand, M. and R. Kawashima. 1980. Influence of minerals in rumen microbial digestion. In: Ruckebush and Thivend (eds): Digestive Physiology and Metabolism in Ruminants. MTP Press, Ltd., Lancaster, England. Pp 375-408.
[13] Rodehutscord, M. Heuvers, H. Pfeffer, 2000. Effect of organic matter digestibility on obligatory faecal phosphour loss in lactating goats, determined from balance data. Anim. Sci. 70: 561-568.