Dr. Christopher Antwi


Senior Lecturer


Research Areas/Interests

Greenhouse gas mitigation and emissions from animal agriculture Animal adaptation to climate change Fodder conservation and feed improvement for enha...~more

My full CV

Publications

    1. Jonker, A., Molano, G., Antwi, C. and Waghorn, G. 2016. Methane and carbon dioxide emissions by beef heifers fed alfalfa silage at three allowances and four feeding frequencies: measured by respiration chambers, SF6 tracer technique and a GreenFeed head-chamber system, Journal of Animal Science, 94: 4326-4337 Doi:10.2527/jas2016-0646
    2. Antwi. 2016. Greenhouse gas emissions and mitigation in the West African sub-region: challenges and opportunities. Proceedings of the Joint Annual Meeting of the American Society of Animal Science and the Canadian Society of Animal Science, Salt Palace Convention Center, Salt Lake City, Utah, United States of America. (Abstract) 19th-23rd July 2016. https://asas.confex.com/asas/jam2016/webprogram/Paper13731.html
    3. Jonker ., Molano, G., Sandoval, E., Taylor, P. Antwi, C., Olinga, S. and G. Cosgrove. 2016. Methane emissions differ between sheep offered a conventional diploid, a high sugar diploid or a tetraploid perennial ryegrass cultivar at two allowances at three times of the year. Animal Production Science, http://dx.doi.org/10.1071/AN15597
    4. Osafo, E.L.K., V. Attoh-Kotoku., Ansah, T., Antwi, , Ofori-Opare, D.N., Amoah-Twumasi, K., Owusu, P.B., Agyemang, P. 2016. Can Feeding Botanic Fractions, Accession of Napier grass (Pennisetum purpueum) and hjarvesting days influence methane emissions on small holder farms in the tropics? Proceedings of the 6th Greenhouse Gas and Animal Agriculture Conference, Melbourne, Australia, 14-18 Feb 2016. PO37, pp 62.
    5. Jonker, A., Molano, G., Sandoval, E., Taylor, P. Antwi, C., Olinga, S. and G. Cosgrove. 2016. Methane emissions differ between sheep offered high sugar, tetraploid or conventional perennial ryegrass cultivar at two allowances in three seasons. Proceedings of the 6th Greenhouse Gas and Animal Agriculture Conference, Melbourne, Australia, 14-18 Feb 2016. PO37, pp 88.
    6. Kouazounde, J. B., Gbenou, J. D., Babatounde, S., Srivastava, N., Eggleston, S. H. , Antwi, C. Baah, J. and McAllister, T. A. 2015. Development of methane emission factors for enteric fermentation in cattle from Benin using IPCC Tier 2 methodology, Animal, 9 (3): 526–533.
    7. Osei-Adu,, , Ennin, S.A., Owusu Danquah, E., Antwi, C., Berchie, J.N.,   Amoah, S., Asumadu, H., Yeboah, S., Asante-Mensah, K. and Stirzaker, R. 2015. Integrated agriculture research for development (IAR4D) in practice, the case of the crop small ruminant Amantin IP in Ghana. Proceedings of the International Conference on Agricultural Innovation Systems in West and Central Africa, 25-27th February 2015, Saly-Portudal, Senegal. 62-63pp.
    8. Jonker, A., Molano, G., Antwi, C. and Waghorn, G. 2014. Feeding lucerne silage to beef cattle at three allowances and four feeding frequencies affects circadian patterns of methane emissions, but not emissions per unit of intake, Animal Production Science, 54: 1350–1353.
    9. Antwi, C., Osafo, E.L.K., Donkoh, A., and Adu-Dapaah, H. 2014. Chemical composition, gas production and degradation characteristics of haulms of improved dual purpose cowpea (vigna unguiculata l. walp) Livestock Research for Rural Development. 26 (11).
    10. Antwi, , Twum-Barimah, L., Osafo, E.L.K., Donkoh, A., and V. Attoh-Kotoku. 2014. Dry Season Feed Resources for Small Ruminant in the Atebubu-Amantin District. Ghanaian Journal of Animal Science, 8 (1): 66-70.
    11. Jonker, A., Molano, G., Sandoval, E., Taylor, P. Antwi, C. and Cosgrove 2014. Methane emissions by sheep offered high sugar or conventional perennial ryegrass at two allowances. Proceedings of the New Zealand Society of Animal Production, Napier, New Zealand, 30 June – 2 July 2014. Vol. 74: 5-10.
    12. Ansah, K.O., Antwi, C., Ennin, S., Amoah, S, Osei-Adu, , Osafo, E.L.K. and Adu-Dapaah, H. 2014. Monitoring the feed intake and growth performance of Small Ruminants in the Atebubu-Amantin District. Ghanaian Journal of Animal Science, 8 (1): 87-93.
    13. Antwi, C. Feed improvement techniques for small ruminants. 25pp Prisebs publishers, Anwomaso, Kumasi. Ghana
    14. Antwi, C., Osafo, E.L.K., Fisher, D.S., Yacout,H.M., Donkoh, A., Hassan, A.A., Sobhy, S.M.M., Salem, A.Z.M and Adu-Dapaah,H. 2014. Effect of pesticides application in cowpea production on in vitro gas production. South Africa Journal of Animal Science, 44(3): 215-219.
    15. Weber, L., Welly, B., Rendon, J.A., Antwi, C., Acetoze, G.E., Kebreab, E., Mendes, D.M. and Van Eenennaam, A.L. 2013. Field assessment of progeny from sires with divergent residual feed intake genetic test results. Oral presentation at the ADSA-ASAS Joint Annual Meeting in Indianapolis, Indiana, July 8-12, 2013. Journal of Dairy Science. 96(E-Suppl. 1):170pp.
    16. Weber, K.L., Rendon, J.A., Antwi, C. and Kebreab, E. 2013. Methane Production is Not Associated with Sire Groups or Residual Feed Intake in Feedlot Angus Cattle. 5th International Conference on Greenhouse Gases and Animal Agriculture (GGAA), Dublin, Ireland, 23rd – 26th June 2013. Pp 348. http://journals.cambridge.org/action/displayIssue?jid=ABS&volumeId=4&seriesId=0&issueId=02         
    17. Antwi, C., Kebreab, E., Jonker, A. and Osafo, E.L.K. 2013. Options for methane mitigation, challenges and opportunities in West Africa. Journal of Ghana Science Association, 15 (1): 93-98.                        
    18. Osafo, E.L.K., Antwi, C., Donkoh, A., and Adu-Dapaah, H. 2013. Feeding graded levels of an improved cultivar of cowpea haulm as supplement for rams fed maize stover diet. International Journal of Agricultural Science, 8 (2): 87-93.           
    19. Antwi, C., Osafo, E.L.K., Oppong-Anane, K. and Baah, 2013. The threat of changes in climate on livelihoods and food security in Ghana.  Ghanaian Journal of Animal Science, 7 (1): 87-92.                                
    20. Antwi, C., Osafo, E.L.K., Fisher, D.S., Yacout,H.M., Donkoh, A., Hassan, A.A., Sobhy, S.M.M., Salem, A.Z.M and Adu-Dapaah,H. 2012. Effects of cultivar, season and year on yield parameters of cowpea and the haulm’s potential as ruminant feed. Agricultural Science Research Journal, 2(6): 274-279.
    21. Antwi, C., Osafo, E.L.K., Fisher, D.S., Yacout, H.M., Donkoh, A., Hassan, A.A., Sobhy, S.M.M., Salem, A.Z.M and Adu-Dapaah,H. 2012. Characterization of four improved dual purpose cultivars of cowpea. Ghanaian Journal of Animal Science, 6(1): 11-16.
    22. Antwi, C., Osafo, E.L.K., Fisher, D.S., Yacout, H.M., Hassan, A.A., and Adu-Dapaah,H. 2010. Storage practices and their effect on nutrient and haulm availability of four dual-purpose cultivars of cowpea (Vigna unguiculatawalp) haulm. Ghanaian Journal of Animal Science, 5(2): 32-40.
    23. Antwi, C., Osafo, E.L.K., Fisher, D.S., Baah, J. and Anane, K.O. 2010. The role of livestock production in greenhouse gases emission in Ghana. 4th International Conference on Greenhouse Gases and Animal Agriculture (GGAA), Banff, Alberta, Canada
    24. Antwi, C., Osafo, E.L.K., Adu-Dapaah, H. and Fisher D.S. 2008. Improved dual-purpose cowpea lines as ruminant feed: yield, nutrient changes in storage and pesticide residue in cowpea haulms on the activities of rumen microorganisms. 10th World Conference on Animal Production, Cape Town International Conference Centre, South Africa. pp 188. (Abstract).
    25. Antwi, , Osafo, E.L.K. and Fisher, D.S. 2008. The role of livestock production in climate change: A review. 10th World Conference on Animal Production, Cape Town International Conference Centre, South Africa. pp xii. (Abstract).

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