In vitro rumen fermentation characteristics and microbes of thin tail sheep given sweet potato (Ipomoea batatas L) biomass

Asep Sudarman, M. Hayashida, M. Miralestari


Sweet potato plant is produced in Indonesia in large quantities. Sweet potato leaves and stems can be used as a source of protein and the tuber can be used as an energy source. This study was aimed to analyze the effect of feeding of sweet potato biomass on the rumen fermentation characteristics, digestibility of dry matter and organic matter as well as rumen microbial population of thin tail sheep. This study used a randomized block design by applying four feed treatments, i.e., T0 (100% Napier grass), T1 (70% of Napier grass + 30% concentrate), T2 (50% of Napier grass + 50% sweet potato leaves), and T3 (70% sweet potato leaves + 30% sweet potato tuber) with three replicates. Rumen fluid samples were taken with stomach tube method using a vacuum pump.  Results showed that the T3 diet has higher (P<0.05) digestibility of dry matter and organic matter, concentration of NH3 and VFA, and rumen bacterial population than those of T0 and T1diets but similar to that of T2 diet. Rumen pH and protozoa population was not different among the treatments. It can be concluded that the use of sweet potato biomass can improve the quality of rumen fermentation of sheep.


Digestibility; Fermentation; Rumen; Sheep; Sweet Potato Biomass

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Anthoney ST, Omwenga J. 2014. Analysis of phytochemical composition of white and purple sweet potato (Ipomoea batatas L.). J Adv Plant Res. 1:19-22.

Aregheore EM. 2004. Nutritive value of sweet potato (Ipomoea batatas L.) forage as goat feed: voluntary intake, growth and digestibility of mixed rations of sweet potato and batiki grass (Ischaemum aristatum var. indicum). Small Rumin Res. 51:235-241. [CSA] Central Statistic Agency. 2015. Statistik Indonesia 2015. Jakarta (Indones): Central Statistic Agency.

Conway EJ. 1962. Micro-diffusion analysis and volumetric error. 5th ed. London (UK): Crosby Lockwood & Sons Ltd.

Farida WR, Ridwan R. 2011. Giving of formulated pellet on Javan Porcupine (Hystrix javanica F. Cuvier, 1823): Effects on feed intake, feed conversion, and digestibility in pre-domestication condition. J Bio Indones. 7:157-170.

[GLP] General Laboratory Procedures. 1966. Department of Dairy Science. Madison (USA): University of Wisconsin.

Hartadi HS, Reksohadiprodjo, Tillman AD. 1997. Tabel komposisi pakan untuk Indonesia. Yogyakarta (Indonesia): Gadjah Mada University Press.

Heuzé V, Tran G, Hassoun P, Renaudeau D, Bastianelli D. 2015. Sweet potato (Ipomoea batatas) tubers. Feedipedia, a programme by INRA, CIRAD, AFZ and FAO. [accessed September 7th 2016].

Kariuki JN, Tamminga S, Gachuiri CK, Gitau GH, Muia JMK. 2001. Intake and rumen degradation in cattle fed Napier grass (Pennisetum purpureum) supplemented with various levels of Desmodium intortum and Ipomoea batatas L. vines. J Anim Sci. 31:149-157.

Kebede T, Lemma T, Tadesse E, Guru M. 2008. Effect of level of substitution of sweet potato (Ipomea batatas L) vines for concentrate on body weight gain and carcass characteristics of browsing Arsi-Bale goats. J Cell Anim Bio. 2:036-042.

Pochapski MT, Fosquiera EC, Esmerino LA, dos Santos EB, Farago PV, Santos FA, Groppo FC. 2011. Phytochemical screening, antioxidant, and antimicrobial activities of the crude leaves’ extract from Ipomoea batatas (L.) Lam. Pharmacogn Mag. 7:165-170. doi: 10.4103/0973-1296.80682.

Siwaporn P, Wanapat M, Wachirapakorn C, Nontaso N. 2010. The effect of roughage and urea solution infusion levels on ruminal NH3-N concentration and nutrient digestibility in beef cattle and swamp buffaloes. Silpakorn U Sci Technol J. 4:47-55.

Ogimoto K, Imai S. 1981. Atlas of rumen microbiology. Tokyo (Japan): Japan Scientific Societes Press.

Puastuti W, Yulistiani D, Mathius I-W. 2012. Ruminal fermentation response and nitrogen retention from sheep fed rumen undegradable protein. Indones J Anim Vet Sci. 17:67-72.

Singh S, Kundu SS. 2011. Comparative rumen microbial population in sheep fed Dicantium annulatum grass supplemented with Leucaena leucocephala and Hardwickia binate tree leaves. Livest Res Rural Develop. Vol. 23. Article #7. sing 23007.htm.

Steel RGD, Torrie JH. 1993. Prinsip dan prosedur statistika. Edisi Ke-3. Terjemahan. Jakarta (Indones): PT Gramedia.

Tilley JMA, Terry RA. 1963. A two-stage technique for the in vitro digestion of forage crops. J Br Grassl Soc. 18:104-111.

Uhi HT, Parakkasi A, Haryanto B. 2006. Pengaruh suplemen katalitik terhadap karakteristik dan populasi mikroba rumen domba. J Anim Sci Technol. 29:20-26.

Wang JK, Ye JA, Jian-Xin L. 2011. Effects of tea saponins on rumen microbiota, rumen fermentation, methane production and growth performance. Trop Anim Health Prod. 44:697-706.


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