Growth response and organ weights of young rabbits fed graded levels of dietary raw soybean in the hot humid tropics

 B.T. Sese, N.A. Berepubo


Graded levets (0%, 5%, 10%, 15%, 20% and 25%) of raw soybean (RSB) were incorporated into six formulated isocaloric and isonitrogenous diets and fed ad libitum to 48 young rabbits of the New Zealand and Californian stra1ns. Diet A (0% RSB) containing toasted soybean meal served as the control. The rabbits were aged between 6-8 weeks. The experiment lastad 56 days. Feed intake and feed conversion showed no significant difference (P>0.05) between the treatment groups and the control. However, average daily feed intake appeared to increase non signiflcantly as the level of raw soybean in the diets increased, from 5% to 25%. There was atso no significant difference (P>0.05) in live weight gain between the treatment groups and the control. Nevertheless, animals in the 15% RSB diet showed superior numerical value for average daity live weight gain (14.0g/day vs 11. 7 for 5% RSB diet). The dietary incorporation of raw soybean had no significant effect (P>0.05) on weight of spteen, kidney, heart, testes and liver. However, RSB inctusion at 25% level led to gross morphological alterations in soma organs, particutarly inflammat1on as watt as necrosis of hepatocytes with infiltration by tymphocytes, in the liver. Toe results indicated that rabbits, unlike other monogastrics such as pigs and poultry do not show growth depresslon to dietary raw soybean which can be incorporated in their ration up to 20% level for short periods under tropical conditions.

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ADUKU A.O., OLUKOSI J.O., 1990. Rabbit management in the tropics. Living book series GU Publications, Abuja FCT.

A.O.A.C., 1984. Official methods of analysis. Association of Official Analytical Chemists, Washington, 126-146.

BALL0UN S.C., 1980. Soya bean meal in poultry nutrition. Kenneth C.L. ed., Am. Soybean Asso., Louis M.O., 29.

CHEEKE P.R., GR0BNER M.A., PATI0N N.M., 1986. Fibre digestion and utilization in rabbits. J. Appl. Rabbit Res., 9, 25-30.

DUNCAN D.B., 1955. Multiple Range and Multiple F tests. Biometrics, 11, 1-42.

HERKELMAN K.L., CR0MWELL G.L., STAHLY T.S., PFEIFFER T.W., KNABE O.A., 1992. Apparent digestibility of amino acids in raw and heated conventional and low-trypsin-inhibitor soybean for pigs. J. Anim. Set., 70, 818-826.

JAFFE W.G., VEGA LETIE C.L., 1986. Heat-labile growth-inhibitting factors in beans (Phaseolus vulgaris). J. Nutr., 94, 203-210.

JENSEN A.H., BR0WN H.W., HARMAN B.G., BAKER D.H., 1970. Effects of roasting com and soya bean, fed to swine. J. Anim. Sci., 31, 1023 (abstr)

LALLES J.P., 1993. Nutritional and antinutritional aspects of soya bean and field pea proteins used in veal calf production : a review. Livest. Prod. Sci., 34, 181.

LIENER I.E., KAKADE M.L., 1969. Protease inhibitors. Toxic contstituants of plant food stuffs. Academic Press, N.Y, Liener I.E. ed., 8-53.

MIR Z., MAcLE0D G.K., BUCHANAN-SMITH J.G., GRIEVE D.G., GR0VUM W.L., 1984. Methods for protecting soybean and canola proteins from degradation in the rumen. Can. J. Anim. Set., 64, 853-856.

RACKIS J.J., 1972. Biologically active components. In: Soybeans : Chemistry and Technology, vol. 1 Proteins, 158-202. The Avi Publ. Co. Inc., Westport, CT, AK Smith and SJ Circle ed.

ROOKE J.A., N0RT0N B.W., STR0NG D.G., 1982. The digestion of untreated and formaldehyde treated soya bean meals and estimation of rumen digestibility by different methods. J. Agri. Sci., 99, 441-453.

SANCHEZ W.K., CHEEKE P.R., PATT0N N.M., 1984. Evaluation of raw and extruded soybeans and extruded soy flour as protein sources for weanling New Zealand White rabbits. J. Appl. Rabbit Res., 7, 101-105.

STEEL T.G.D., T0RRIE J.H., 1980. Principles and procedures of statistics. A biometrical approach, 2nd edition, McGraw Hill Book Co., NY.

TEWE O.O., 1984. Energy and protein sources in poultry feeds. In: Poultry seminar on soya bean. Poultry Association of Nigeria (Oyo State) University of lbadan, Nigeria, July 1984, 52-59.

WEISTBR0TI S.H., FLATI R.E., KAUS A.L, 1974. The biology of the laboratory rabbit. Academic Press,NY.

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 Universitat Politècnica de València


Official journal of the World Rabbit Science Association (WRSA)


e-ISSN: 1989-8886     ISSN: 1257-5011