Chemical composition and fermentation pattern of forest trees leaves from Al-Jabal Al-Akhdar region, Libya


  • I Milad Animal Prod. Dep. Agric. Fac., Omar Al-Mukhtar Univ., P.O. Box 919. Beida, Libya.



Forest trees, rumen fermentation, ruminants, In vitro gas production technique.


This study was conducted to determine the chemical composition and the pattern of fermentation of some of forest trees leaves native in AI-Jabal AI-Akhdar region, Libya. Samples included were arbutus Arbutus pavarii, Mediterranean mastic tree Pistacia lentiscus, juniper Juniperus phoenicea, carob Ceratonia siliqua, oak Quercus coccifera. Data obtained in the present study revealed that the percentage of crude protein, crude fibre, crude fat, total mineral ranged as follow (6.3 -11.3), (25.0 -37.0), (5.7 -17.0) and (3.1-8.5) respectively. Measurements of in vitro gas production after incubation of the samples anaerobically with sheep rumen liquor for 72 hrs ranged between 137.3 and 170 ml gm dry matter. In vitro gas production was higher with the genus J. phoenicea (P < 0.01) than with any other genera studied. However, there were no significant differences (P > 0.05) between the other genera. Values of estimated metabolizable energy and organic matter digestibility were 5.23, 5.76, 5.33, 5.70 and 5.73 MJ/Kg DM and 35.5, 39.2, 36.2, 38.3 and, 38.7% for A. pavarii , J. phoenicea, P. lentiscus, C. siliqua and Q. coccifera respectively. There were no significant differences (P > 0.05) between these values. Results of this study indicated that forest trees leaves can be incorporated as a local source for ruminant nutrition under extensive conditions. In addition to that, the pattern of fermentation may indicate the presence of antinutritive factors that may considered.


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بن عامر ، م.أ.أ. (1992) تقنية تحليل وتقييم أغذية حيوانات المزرعة . منشورات جامعة عمر المختار – البيضاء ، الطبعة الأولي .

شرف ، ع.ط. (1996) جغرافية ليبيا ، الطبعة الأولى – مركز الإسكندرية للكتاب / ج.م.ع.

A. O. A. C. 1980. Official methods of analysis of Association Official Analytical Chemists 13th ed Washington, D. C., U.S.A.

Ben Salem, H., Nefzaoui, A. and Ben Salem, L. 2002. Supplementation of Acacia cyanophylla Lindl. Foliage -based diets with barley or shrubs from arid areas (Opuntia ficus -indica f intermis and Atriplex nummularia L.) on growth and digestibility in lambs. Animo FeedSci. & Technol. 69: 15 -30. DOI:

Canbolat, 0., Kamalak, A., Ozkose, E., Ozkan, C.O., Sahin, M. and Karabay, P. 2005. Effect of polyethylene glycol on in vitro gas production, metabolizable energy and organic matter digestibility of Quercus cerris leaves. Livestock Research for Rural Development. Volume 17 ,Article# 42, from lrrd 17/4/canbI7042.htm

Kamalak, A., Canbolat, O. and Gurbuz, Y. 2004. Comparison between in situ dry matter degradation and in vitro gas production of tannin-containing leaves from four tree species. South African.J of Animo Sci. 34(4): 233 -240.

Kamalak, A., Canbolat, 0., Sahin, M., Gurbuz, Y., Ozkose, E. and Ozkan, C. O. 2005. The effect of polyethylene glycole (PEG 8000) supplementation on in vitro gas production kinetics of leaves from tannin containing trees. South African.J of Animo Scio 35(4): 229-237. DOI:

Khazaal, K., Dentinho, M. T., Ribeiro, J. M. and 0rskov, E. R. 1993. A comparison of gas production during incubation with rumen content in vitro and nylon bag degradability as predictors of the apparent digestibility in vivo and voluntary intake of hays. Animo Prod. 57:105 -112. DOI:

Lane, I. R. 1993. Farmer centred agroforesrty research and development in Eastern China, O. D. A- Forest Project (Annual report No. I R. 5398 Appendix 3).

Lefroy, E. C., Dann, P. R., Wilden, J. H., Wesley-Smith, R. N., and McGowan, A. A. 1992. Trees and shrubs as sources of fodder in Australia. Agroforestry Systems 20: 117 -139. DOI:

Menke, K. H., Raab, L., Salewski, A., Steingass, H., Fritz, D. and Shneider, W. 1979. The estimation of the digestibility and metabolizable energy content of ruminant feedstuffs from the gas production when they are incubated with rumen liquor. J: Agric. Sci. 93: 217 -222. DOI:

Menke, K. H. and Steingass, H. 1988. Estimation of energetic feed alue obtained from chemical analysis and in vitro gas production using rumen fluid. Anim.Res. And Develop. 28: 7 -55.

Nsahlai, I. V., Siaw, D. E. K. and Osuji, P. 0.1994. The relationships between gas production and chemical composition of 23 browses of the genus Sesbania. J: of the Scio of Food and Agric. 36:255 -261.

Nsahlai, I. V., Osuji, P. 0 and Umunna, N. N. 1995. The degradability by sheep of fruits of Acacias and leaves of Sesbania sesban and the effects of supplementation with mixtures of browses and oilseed cake on the utilization of teff (Eragrostis teft) straw. Animo Sci. 61: 539 -544. DOI:

Reed, J. D., Soller, H. and Woodward, A. 1990. Fodder tree and stover diet for sheep: intake, growth, digestibility and the effects of phenolics on nitrogen utilization. Animo Feed Sci. & Technol30: 39-50. DOI:

Steel, R. G. D and Tome, J. H. 1981. Principles and procedures of statistics. 2nd edn, New York: McGraw -Hill Book, Co.

Tolera, A., Khazaal, K. and 0skov, E. R. 1997. Nutritive evaluation of some browse species.Anim. FeedSci. & Techno/. 67:181 -195. DOI:



How to Cite

Milad, I. (2007). Chemical composition and fermentation pattern of forest trees leaves from Al-Jabal Al-Akhdar region, Libya. Al-Mukhtar Journal of Sciences, 14(1), 136–146.



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