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Feeding Acacia saligna to Sheep and Goats with or without the Addition of Urea or Polyethylene Glycol
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 Title & Authors
Feeding Acacia saligna to Sheep and Goats with or without the Addition of Urea or Polyethylene Glycol
Krebs, G.L.; Howard, D.M.; Dods, K.;
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The objective of the research was to investigate the effect of polyethylene glycol (PEG) or urea supplementation in sheep and goats fed a basal diet of Acacia saligna and wheat straw. The 3 dietary treatments were: (1) Control: ad libitum A. saligna+ 400 g/d wheat straw (95% DM) (basal diet); (2) Basal diet+50 g/d PEG 4000; and (3) Basal diet+1% (on a DM basis) urea sprayed onto the straw and A. saligna 30 min prior to feeding. All animals maintained live weight, regardless of the dietary treatment. All sheep readily consumed the A. saligna in preference to straw. In sheep both DMD and OMD were higher (p<0.05) where PEG was included in the diet compared to the other two treatments. Contrary to findings by other researchers there was no significant difference in DMI, DMD or OMD between sheep and goats in corresponding treatment groups. All animals were in positive N balance. For both sheep and goats, rumen ammonia concentrations were increased with the use of either urea or PEG. In these groups the maximum ammonia concentrations exceeded 50 mg/L, considered the minimum required to maximise microbial growth. This threshold, however, was exceeded only for a period of 8-11 h. Of those measured, rumen ammonia levels were generally the highest at 4 h post feeding. None of the measurements of rumen ammonia for the control group approached 50 mg/L. It is unclear how and why feed intake and live weight were maintained when rumen ammonia levels were often sub-optimal.
Acacia saligna;Sheep;Goats;Urea;PEG;
 Cited by
Abou El Nasr, H. M., H. M. Kandil, A. El Kerdawy, Dawlat, H. S. Khamis and H. M. El Shaer. 1996. Value of processed saltbush and Acacia shrubs as sheep fodders under the arid conditions of Egypt. Small Rumin. Res. 24:15-20. crossref(new window)

Barry, T. N. 1985. The role of condensed tannins in the nutritional value of Lotus pedunculatus for sheep. 3. Rates of body and wool growth. Br. J. Nutr. 54:211-217. crossref(new window)

Ben Salem, H., A. Nefzaoui, L. Ben Salem and J. L. Tisserand. 1997. Effect of Acacia cyanophylla Lindl. foliage supply on intake and digestion by sheep fed lucerne hay-based diets. Anim. Feed Sci. Technol. 68:101-113. crossref(new window)

Ben Salem, H., A. Nefzaoui, L. Ben Salem and J. L. Tisserand. 1999. Intake, digestibility, urinary excretion of purine derivatives and growth by sheep given fresh, air-dried or polyethylene glycol-treated foliage of Acacia cyanophylla Lindl. Anim. Feed Sci. Technol. 78:297-311. crossref(new window)

Chriyaa, A., K. J. Moore and S. S. Waller. 1997. Intake, digestion, and nitrogen balance of sheep fed shrub foliage and medic pods as a supplement to wheat straw. Anim. Feed Sci. Technol. 65:183-196. crossref(new window)

Degen, A. A., K. Becker, H. P. S. Makkar and N. Borowy. 1995. Acacia saligna as a fodder tree for desert livestock and the interaction of its tannins with fibre fractions. J. Sci. Food. Agric. 68:65-71. crossref(new window)

Degen, A. A., A. Blanke, K. Becker, M. Kam, R. W. Benjamin and H. P. S. Makkar. 1997. The nutritive value of Acacia saligna and Acacia salicina for goats and sheep. Anim. Sci. 64:253-259. crossref(new window)

Fassler, O. M. and C. E. Lascano. 1995. The effect of mixtures of sun-dried tropical shrub legumes on intake and nitrogen balance by sheep. Tropical Grasslands 29:92-96.

Fujihara, T., I. M. Osuga, S. A. Abdulrazak and T. Ichinohe. 2005. Chemical composition, degradation characteristics and effect of tannin on digestibility of some browse species from Kenya harvested during the wet season. Asian-Aust. J. Anim. Sci. 18:54-60.

Harrison, D. G., D. E. Beever, D. J. Thomson and D. F. Osbourn. 1973. The influence of diet upon quantity and type of amino acids entering and leaving the small intestine of sheep. J. Agric. Sci. 81:391-401. crossref(new window)

Karabulut, A., O. Canbolat, C. O. Ozkan and A. Kamalak. 2007. Determination of nutritive value of citrus tree leaves for sheep using in vitro gas production technique. Asian-Aust. J. Anim. Sci. 20:529-535.

Makkar, H. P. S., M. Bluemmel, N. K. Borowy and K. Becker. 1993. Gravimetric determination of tannins and their correlations with chemical and protein precipitation methods. J. Sci. Food Agric. 61:161-165. crossref(new window)

Makkar, H. P. S., R. K. Dawra and B. Singh. 1988. Determination of both tannin and protein in a tannin-protein complex. J. Agric. Food Chem. 36:523-525. crossref(new window)

McMeniman, N. P. 1975. Machine for stripping leaves from fodder trees. Queensland J. Agric. Anim. Sci. 32:91-94.

Moore, G. 2001. Soil Guide-A Handbook for Understanding Agricultural Soils. Agriculture Western Australia, Perth.

Porter, L. J., L. N. Hrstich and B. G. Chan. 1986. The conversion of procyanidins and prodelphinidins to cyanidin and delphinidin. Phytochem. 25:223-230. crossref(new window)

Rubanza, C. D. K., M. N. Shem, R. Otsyina, T. Ichinohe and T. Fujihara. 2003. Nutritive evaluation of some browse tree legume foliages native to semi-arid areas in Western Tanzania. Asian-Aust. J. Anim. Sci. 16:1429-1438.

Satter, L. D. and L. L. Slyter. 1974. The effect of ammonia concentration on rumen microbial protein production in vitro. Br. J. Nutr. 32:199-208. crossref(new window)

Searle, P. L. 1984. The Berthelot or indophenol reaction and its use in the analytical chemistry of nitrogen - a review. Analyst 109:549-568. crossref(new window)

Silanikove, N., N. Gilboa and Z. Nitsan. 1997. Interactions among tannins, supplementation and polyethylene glycol in goats given oak leaves: effects on digestion and food intake. Anim. Sci. 64:479-483. crossref(new window)

Silanikove, N., N. Gilboa, A. Perevolotsky and Z. Nitsan. 1996a. Effect of a daily supplementation of polyethylene glycol on intake and digestion of tannin-containing leaves (Quercus calliprinos, Pistacia lentiscus, and Ceratonia siliqua) by goats. J. Agric. Food Chem. 44:199-205. crossref(new window)

Silanikove, N., N. Gilboa, A. Perevolotsky and Z. Nitsan. 1996b. Goats fed tannin-containing leaves do not exhibit toxic syndromes. Small Rumin. Res. 21:195-201. crossref(new window)

Silanikove, N., Z. Nitsan and A. Perevolotsky. 1994. Effect of a daily supplementation of polyethylene glycol on intake and digestion of tannin-containing leaves (Ceratonia siliqua) by sheep. J. Agric. Food Chem. 42:2844-2847. crossref(new window)

Terrill, T. H., G. B. Douglas, A. G. Foote, R. W. Purchas, G. F. Wilson and T. N. Barry. 1992. Effect of condensed tannins upon body growth, wool growth and rumen metabolism in sheep grazing sulla (Hedysarum coronarium) and perennial pasture. J. Agric. Sci. Camb. 119:265-273. crossref(new window)

Woodward, A. and J. D. Reed. 1997. Nitrogen metabolism of sheep and goats consuming Acacia brevispica and Sesbania sesban. J. Anim. Sci. 75:1130-1139.