• R. T. Sani
  • O. S. Lamidi
  • N. P. Achi
  • W. Idowu
  • Y. M. Ishiaku
  • S. A. Ahmed
  • H. B. Lawal
Keywords: Bunaji bull, Parboiled rice offal, Raw rice offal, Rumen metabolite


Twenty Bunaji bulls aged 2-3 years with an average weight of 230kg were assigned to five dietary treatments with four bulls per treatment in a 2x2 factorial configuration with common control to determine the effect of feeding diet containing varying inclusion of raw or parboiled rice offal on bull rumen metabolites which lasted for 90 days. Rumen fluid was collected at 0, 2, 4, and 6 hr intervals to assess rumen pH, rumen ammonia nitrogen (RAN), and rumen total volatile fatty acid (TVFA). Digitaria smutsii concentrate and basal diet were provided at 2% bogy weight. Crude Protein content of the experimental diets ranged from 19.69- 20.44%, while Metabolizable Energy content ranged from 10.86-11.16MJ/kg DM. Rice offal type had no effect on rumen parameters (P>0.05). Rumen pH six hours after feeding at 0% (6.63) and 30% (6.76) inclusion levels was similar (P>0.05), but differed considerably (P<0.05) from the 20% (6.93) inclusion level. The highest and lowest TVFA values were found in bulls fed diets with 20% (44.70 mol) and 30% (23.49 mol) inclusion levels. Effects of varying RRO and PRO inclusion levels on rumen pH and TVFA at different sample times were not significant (P>0.05). Bulls fed 30%PRO had the highest value (22.41g/100g), while bulls fed 20% PRO had the lowest value (14.80g/100g). This study indicated that RRO or PRO can be utilized to replace up to 30% of maize offal as a source of energy in the diet of Bunaji bulls with no negative effects on the bulls' rumen metabolite.


Aduku, A.O. (1993). Tropical feedstuffs analysis table. Department of Animal Science. Faculty of Agriculture, Ahmadu Bello University, Zaria. Pp. 196.

Ahmad, I., Gohar, A., Ahmad, N., & Ahmed, M. (2003). Haematological Profile in Cyclic, Non Cyclic and Endometritic Cross-Bred Cattle. International Journal of Agriculture and Biology, 5, 332–334.

Alderman, G. and Cottrill, B.R. (1985). Energy and protein requirements of ruminants. An advisory manual prepared by the AFRC Technical Committee on Responses to Nutrients. Wallingford, UK, CAB International.

Ambreen, N., Hanif, N.Q and Khatoon, A (2006). Chemical Composition Of Rice Polishing from Different Sources. Pakistan Veterinary Journal, 26: 190-192.

AOAC. (2000). Official method of Analysis. Association of Official Analytical Chemists. Official Methods of Analysis, Washington, DC.

Dafwang, I.I. (2006). Meat, milk and eggs from farm wastes: Explorations in animal nutrition research and extension. An inaugural lecture. A publication of the University organized lectures committee, Vice chancellor’s office, ABU, Zaria, pp:73.

Debi, M.R., Wichert, B.A. and Liesegang, A. (2022). Anaerobic fermentation of rice bran with rumen liquor for reducing their fiber components to use as chicken feed. Heliyon. https://doi.org/10.1016/j.heliyon.2022e09275 DOI: https://doi.org/10.1016/j.heliyon.2022.e09275

Denman, S. E., & McSweeney, C. S. (2006). Development of a real-time PCR assay for monitoring anaerobic fungal and cellulolytic bacterial populations within the rumen. Federation of European Mi c ro b i o l o g i c a l S o c i e t i e s Journals, 58, 572–582. DOI: https://doi.org/10.1111/j.1574-6941.2006.00190.x

Duru, S. (2010). Evaluation of three types of rice offal in broiler diets Ph.D Thesis. Department of Animal Science Ahmadu Bello University, Zaria. Nigeria.

Google earth. (2021). Google earth positioning system for geographical Description.

Hua, D., Hendriks, W.H., Xiong, B. and Pelikaan,W.F. (2022). Starch and Cellulose Degradation in the Rumen and Application of Metagenomics on Ruminal Microorganisms. Animals12 3020. https://doi.org/10.3390/ani12213020 DOI: https://doi.org/10.3390/ani12213020

IAR. (2017). Institute of Agricultural Research Meteorological Station. Data on Shika Weather Condition, Ahmadu Bello University, Zaria, Nigeria.

Idowu, O.O. (2011) Comparative Evaluation of some cereal by- product as energy source for fattening beef cattle. M.Sc. Thesis submitted to Animal Science Department, Ahmadu Bello University Zaria, Nigeria.

Jonas, J and Vilma, B. (2007): Effect of L. Plantarum, PediococcusAcidilactici, Enterococcus Faecium and L. Lactis microbial supplementation of grass silage on the fermentation characteristics in rumen of Diary Cows. VeterinarijaIrZootechnika T. 40 (62). 29 pts@lgi.lt

Kamra, D. N. (2005). Rumen microbial ecosystem. Current Science Journal, 89, 124–135.

Kudo, H., Abdullah, N., Ho, Y. W., Jalaludin, S., Hawa, I. and Fukuta K. (1995). Behaviour and Reproduction of Captive Lesser Mouse Deer (Tragulusjavanicus). Malays. Journal of Animal Science, 1: 24-28.

Lamidi, O.S. (2005). The use of some conventional non protein sources for fattening cattle. Ph.D. Thesis. Department of Animal Science, Ahmadu Bello University, Zaria, Nigeria.

Lamidi, O.S., Adamu, A.M., Ehoche, O.W. and Alawa J.P. (2007). Replacement value of Sun-dried broiler litter for cotton seed cake in the fattening diets for Bunaji bulls. Journal of Animal Production Research 20(1&2):99-112.

Leng, R.A. and Nolan, J.V. (1984). Nitrogen metabolism in the rumen. Journal of Dairy Science. 67:1072-1089. DOI: https://doi.org/10.3168/jds.S0022-0302(84)81409-5

Maikano, A. (2007).Utilization of rice offal in practical ration of broilers. The Zoologist, 5:1-7. DOI: https://doi.org/10.4314/tzool.v5i1.41343

Marcus, C. and Jurgen, H. (2017). Physiological adaptations of ruminants and their potential relevance for production systems. Revista Brasileira de Zooctecnia. 46(7). https://doi.org/10.1590/S1806-929017000700008. DOI: https://doi.org/10.1590/s1806-92902017000700008

Millam, J. J., Bello, S. S., Abbaya, H. Y. and John, P. A. (2020). Growth performance and serum biochemical profile in Yankasa rams fed alkali treated groundnut shells. Vol. 4 No. 3, pp 52 – 59. https://doi.org/10.33003/fjs-2020-0403-251. DOI: https://doi.org/10.33003/fjs-2020-0403-251

Mould, F. L. and Orskov, E. R. (1984). Manipulation of rumen fluid PH and its influence on cellulosis in in sacco DM degradability and the rumen micro flora of sheep offered either hay or concentrate. Animal Feed Science and Technology. 16:1-14. DOI: https://doi.org/10.1016/0377-8401(83)90002-0

Njokweni, S.G., Weimer, P.J., Botes, M. and Van Zyl, W.H. (2020). Effects of preservation of rumen inoculum on volatile fatty acids production and the community dynamics during batch fermentation of fruit pomace. Journal of Bioresources Technology. https://doi.org/10.1016/j.biortech.2020.124518. DOI: https://doi.org/10.1016/j.biortech.2020.124518

NRC (National Research Council), (2000). Nutrient Requirements of Beef Cattle. 7th Revised Edition. National Academic, Press,Washington, DC, USA. Retrieved on 25th August, 2009 from http://www.nap.edu/books/0309069343/html

Obeka, E.A. (1985). Nutritive Evaluation of Rice offal in the diets of growing pullet and Layers.M. Sc. Thesis, Department of Animal Science, Ahmadu Bello University, Zaria.

Oskoueian, E., Jahromi, M.F., Jafari, S., Shakeri M., Le, H.H. and Ebrahimi, M. (2021). Manipulation of rice straw silage fermentation with different types of lactic acid bacteria innoculant affects rumen microbial fermentation characteristics and methane production. Veterinary Sciences. https://doi.org/10.3390/vetsci8060100. DOI: https://doi.org/10.3390/vetsci8060100

Ozutsumi, Y., Tajima, K., Takenaka, A., & Itabashi, H. (2005). The effect of protozoa on the composition of rumen bacteria in cattle using 16s rRNA gene clone libraries. Journal of Bioscience, Biotechnology and Biochemistry., 69, 499–506. DOI: https://doi.org/10.1271/bbb.69.499

Parish, J.A. and Rhinehart, J.D. (2008). Energy in Beef Cattle Diets. Mississipi Agricultural and Forestry Experiment Station. Retrieved on 12th September, 2010 from wwwthecattlesite.com/articles/1653/energy in beef cattle diets

Pei, C. X., Mao, S. Y., Cheng, Y. ., & Zhu, W. . (2010). . Diversity, abundance and novel 16s rRNA gene sequence of methanogen in rumen liquid, solid and epithelium fractions of jinnan cattle. Animal, 4, 20–29. DOI: https://doi.org/10.1017/S1751731109990681

SAS (2002). INSTITUTE inc. SAS/STAT user’s guide. 6.03 Edition, Gray NC, USA

Scamell, J. M. (2006). Healthy land for healthy cattle. Cattle Practice, 14, 143–152.

Stewart, W. E., Daryl G. Stewart and Schultz, L. H (1958). Rates of volatile fatty acid production in the bovine rumen. Journal of Animal Science. Volume 17, Number 3 pages 723-736. DOI: https://doi.org/10.2527/jas1958.173723x

Tiough, S.M., Kpehe, A.T., Shaahu, D.T., Mashi, A.M. and Sarwuan, G.D. (2020). Determination of the proximate composition of rice offal treated with rumen filtrate. Nigerian Journal of Animal Science and technology (NJAST). 3(3), 101-106. https://njast.com.ng/index.php/home/article/view/111.

Van Soest, J.P. (1991). The use of detergents in the analysis of fibrous feeds. Determination of plant constituents. Journal Association of Agricultural Chemistry.50:50-55. DOI: https://doi.org/10.1093/jaoac/50.1.50

Valchev, L., Lasheva, T. and Josifov, N. (2009): Silica Products from Rice Hulls, Journal of the University of Chemical Technology and Metallugy, 44(3), 257-261.

Whitehead, R., Cooke, G.H.,Chapman.B.T.(1976). Automation in analytical chemistry technicon syrup. Vol.2,Pg 377.basingstoke intants, Technicon instruments company limited.

Wohlt, J. E., Sniffens, C. J., Hoover, W. H., Johnson, L. L. and Walker, C. K. (1976).Nitrogen metabolism in wethers as affected by dietary protein solubility and amino acid profile Journal of Animal Science. 42:1280-1286 DOI: https://doi.org/10.2527/jas1976.4251280x

Zainal, N.S., Mustapa, M.S., Zaleha, M. and Badarulzaman, N.A.(2018). Study of characteristics of rice husk and silica obtained from rice husk. International Journal of Chemical Engineering and Application. Doi.10.18178/ijcea.2018.718. DOI: https://doi.org/10.18178/ijcea.2018.9.5.718

How to Cite
SaniR. T., LamidiO. S., AchiN. P., IdowuW., IshiakuY. M., AhmedS. A., & LawalH. B. (2023). EFFECTS OF FEEDING DIET CONTAINING RAW OR PARBOILED RICE OFFAL ON RUMEN METABOLITE OF BUNAJI BULLS. FUDMA JOURNAL OF SCIENCES, 7(1), 84 - 90. https://doi.org/10.33003/fjs-2023-0701-1246