Feeding value of hays of tropical forage legumes in pigs: Vigna unguiculata, Psophocarpus scandens, Pueraria phaseoloides and Stylosanthes guianensis
- 183 Downloads
The effects of four tropical forage legume hays (Vigna unguiculata, Psophocarpus scandens, Pueraria phaseoloides and Stylosanthes guianensis) on voluntary feed intake (VFI) and their nutritive value were studied in growing pigs using a corn-soybean meal-based diet containing varying proportions of forage legume hays (0, 10, 20 and 40 % or 0, 12.5 and 25 % for VFI and nutritive value determination, respectively). There was no difference in VFI between species (P > 0.20), but a linear response to forage inclusion level (P < 0.05) was observed decreasing from 126 for 0 % to approximately 84 g/kg of body weight for the 40 % forage diets, except for V. unguiculata, where the response was quadratic (P = 0.01). All four forage species linearly decreased the total tract apparent digestibility (TTAD) from 0.76 to 0.61, 0.80 to 0.68, 0.54 to 0.40 and 0.58 to 0.31 except for S. guianensis (0.44) for DM, N, NDF and N retention, respectively. Differences in digestibility (P < 0.05) between species were also observed. Due to their negative influence on the overall digestibility, the contribution of hays should not exceed 12.5 %, except for S. guianensis, in which N retention remained quite high (0.44) at the highest inclusion level (25 %). P. phaseoloides hay should be avoided in pigs as it combines the lowest VFI with the lowest nutrient digestibility.
KeywordsTropical forage legumes Pigs Nutritive value
The authors gratefully acknowledge Wallonie-Bruxelles International (Brussels, Belgium) for funding this study (CAVTK project) and the workers in Kolo-Fuma (SEBO, Bas-Congo, DRC) for their support.
Conflict of interest
The authors declare that they have no conflict of interest.
- AOAC. 1990. Official Methods of Analysis. In: A. O. A. Chemists (ed.) No. 15th ed. (Association Official Analytical Chemists, Arlington)Google Scholar
- Bindelle, J., Sinnaeve, G., Dardenne, P., Leterme, P. and Buldgen, A. 2005. A rapid estimation of nitrogen bound to neutral detergent fibre in forages by near infrared reflectance spectroscopy. In: F.P. O’Mara, R.J. Wilkins, L. ‘t Mannetje, D.K. Lovett, P.A.M Rogers and T.M. Boland (eds), Proceedings of the XXth International Grassland Congress, 26 June- 1 July 2005, University College Dublin, 259--260Google Scholar
- Hagerman, A., Harvey-Mueller, I. and Makkar, H.P.S., 2000. Quantification of tannins in tree foliage–a laboratory manual. FAO/IAEA, Vienna, 31p. http://www-naweb.iaea.org/nafa/aph/public/pubd31022manual-tannin.pdf. Accessed 23 March 2013
- Kambashi, B., Picron P., Boudry, B. and Bindelle, J., 2014. Forage plants as an alternative feed resource for sustainable pig production in the tropics: a review, Animal, 1--14Google Scholar
- Kaensombath, L., Neil, M. and Lindberg, J.E., 2013. Effect of replacing soybean protein with protein from ensiled stylo (Stylosanthes guianensis (Aubl.) Sw. var. guianensis) on growth performance, carcass traits and organ weights of exotic (Landrace x Yorkshire) and native (Moo Lath) Lao pigs, Tropical Animal Health Production, 45, 865--871PubMedCrossRefGoogle Scholar
- Len, N.T., Lindberg, J.E. and Ogle, B., 2007. Digestibility and nitrogen retention of diets containing different levels of fibre in local (Mong Cai), F1 (Mong Cai x Yorkshire) and exotic (Landrace x Yorkshire) growing pigs in Vietnam, Journal of Animal Physiology and Animal Nutrition, 91, 297--303PubMedCrossRefGoogle Scholar
- Lynch, M.B., Sweeney, T., Callan, J.J. and O’Doherty, J.V., 2007. Effects of increasing the intake of dietary b-glucans by exchanging wheat for barley on nutrient digestibility, nitrogen excretion, intestinal microflora, volatile fatty acid concentration and manure ammonia emissions in finishing pigs, Animal, 1, 812--819PubMedCrossRefGoogle Scholar
- Phengsavanh, P. and Lindberg, J., 2013. Effect of replacing soybean protein with protein from porcupine joint vetch (Aeschynomene histrix BRA 9690) and stylo (Stylosanthes guianensis Composite) leaf meal on growth performance of native (Moo Lath) Lao pigs, Tropical Animal Health and Production, 45,1795--1802PubMedCrossRefGoogle Scholar
- Régnier, C., Bocage, B., Archimède, H., Noblet, J. and Renaudeau, D., 2013. Digestive utilization of tropical foliages of cassava, sweet potatoes, wild cocoyam and erythrina in Creole growing pigs, Animal Feed Science and Technology, 180, 44--54Google Scholar
- Van Soest, P. J., Robertson, J. B. and Lewis, B. A., 1991. Methods for Dietary Fiber, Neutral Detergent Fiber, and Nonstarch Polysaccharides in Relation to Animal Nutrition, Journal of Dairy Science 74, 3583--3597.Google Scholar