Prof. Eric Cofie Timpong-Jones

Associate Prof. ( Forage and Range Science)/ Head of Centre

contact info

etimpong-jones@ug.edu.gh

About

Specialization:

Forage and Range Science: Spatial Science, Woody species encroachment, Transhumance pastoralism 

Research focus:

  • Monitoring and evaluation of rangeland resources. 
  • Harvest management and preservation of forages. 
  • Livestock and Climate change nexus
  • Extensive grazing systems 

Education

Research Areas

Research focus:

  • Monitoring and evaluation of rangeland resources. 
  • Harvest management and preservation of forages. 
  • Livestock and Climate change nexus
  • Extensive grazing systems

Publications

  1. REFEREED JOURNAL PUBLICATIONS
  2. Sarkwa, F. O., Timpong-Jones, E. C., Adogla-Bessa, T and Antwi, V (2025). Methane Emission of Goats Fed Fifteen Diets: On-Farm Observations. Online J. Anim. Feed Res., 15(2): 69-78. DOI: https://dx.doi.org/10.51227/ojafr.2025.9
  3. Sarkwa, F. O., Madibela, O, R., Adogla-Bessa, T., Perkins, J. S., Mphinyane, W. N., Timpong-Jones, E. C., Pelane-Modutiwe, G. L., Otu, B. O., Coffie, C. K and Tudeka, C. K (2025). Can Feeding dried browse leaves to sheep reduce methane emissions and improve weight gain? West African Journal of Applied Ecology, 33(1): 102-117
  4. Sarkwa, F. O., Timpong-Jones, E. C., Madibela, O, R., Osei, D. Y., Adogla-Bessa, T., Boadu, S., Adu Boahene, F. Y., Tamatey, P., Perkins, J. S., Pelane-Modutiwe, G. L (2025). Perception and Preference of consumers on the quality of mutton-based on the type of feed fed to sheep in Ghana. African Journal of Food, Agriculture, Nutrition and Development, 25 (5): 26655-26679. https://doi.org/10.18697/ajfand.142.25165
  5. Sarkwa, F.O., Antwi, V., Timpong-Jones*, E.C., Obese, F.Y., Adogla-Bessa, T., Osei, D.Y., Adu Boahene, F and Andoh, S (2025). Methane emission and performance indicators of sheep fed Super Napier grass, Sodium hydroxide treated rice straw and leaves of two browse species (Leucaena leucocephala and Albizzia lebbek). African Journal of Range and Forage Science, 42 (4): 285-293. https://doi.org/10.2989/10220119.2025.2557220
  6. Paris-Mensah, A. P., Sarkwa, F. O., Ansah, S. B., Vordzogbe, V. V., Dave, M., Osei, D. Y and Timpong-Jones#, E. C (2025). Effect of clearing invasive woody species on plant species diversity in tropical rangeland ecosystem in Ghana. Discover Sustainability, 6:1152 https://doi.org/10.1007/s43621-025-01897-0
  7. Osei, D. Y., Asiedu, P., Sarkwa, F. O., Timpong-Jones, E. C and Amedorme, D. (2024). Spleen Indices of Mixed Breed Rabbits Fed Graded Levels of Some Common Forages I the Coastal Savannah Ecological Zone of Ghana. Acta Scientific Veterinary Sciences (ISSN: 2582-3183) 6 (3). DOI: 10.31080/ASVS.2024.06.0839
  8. Osei, D. Y., Sarkwa, F. O., Timpong-Jones, E. C., Asiedu, Peter and Amedorme, D. (2023). Intake and Palatability of Forages Fed to Rabbits in the Coastal Savannah Ecological Zone of Ghana. Acta Scientific Veterinary Sciences, 5 (11): 52-58.
  9. Sarkwa, F. O., Madibela, O, R., Adogla-Bessa, T., Mphinyane, W. N., Perkins, J. S., Idan, F and Timpong-Jones*, E. C (2023). Synergistic effects of Albizzia lebbek, Moringa oleifera and Millettia thonningii leaves on weight gain and predicted enteric methane emission in sheep. West African Journal of Applied Ecology, 31(1): 64 - 74 
  10. Timpong-Jones*, E.C., Samuels I, Sarkwa, O.F., Oppong-Anane K and Majekodunmi A.O (2023). Transhumance pastoralism in West Africa- its importance, policies and challenges. African Journal of Range and Forage Science, 40(1):114-128. https://doi.org/10.2989/10220119.2022.2160012
  11. Sarkwa, O.F., Adogla-Bessa, T., Madibela, O.R., Mphinyane, W.N., Perkins, J.S., Timpong-Jones*, E.C., Gyimah, A.N.,Otu, B.O and Tudeka, C.K (2023). The effects of feeding dried browse leaves on rumen ammonia Levels and amplification of methanogens and protozoa of sheep in the Coastal Savannah of Ghana. Tropical Animal Health and Production, 55:80 https://doi.org/10.1007/s11250-023-03456-z
  12. Anane N.A, Ayizanga R.A, Sarkwa F.O and Terry, A., Timpong-Jones*, E.C (2023). Spatial variability of herbage yield, grazing capacity and plant diversity evaluation in a Tropical Savannah Rangeland Ecosystem. African Journal of Range and Forage Science, 40(1): 71-84. https://doi.org/10.2989/10220119.2023.2171127
  13. Tokozwayo, S., Timpong-Jones, E. C., Mopipi, K., Gxasheka, M., Gulwa, U., Mthi, S., Mndela, M., Dastile, M and Dumani, A (2023). Short- term effect of grazing exclusion and uncontrolled grazing on species abundance, dry matter yield and nutritive value in an invaded area by Euryops floribundus in the Eastern Cape, South Africa. Open Journal of Ecology: 13: 321-333. https://doi.org/10.4236/oje.2023.136020
  14. Timpong-Jones* E C, Owusu-Bremang R, Mopipi K and Sarkwa F O (2023). Climate change and variability affect rangeland quality and productivity- How? African Journal of Food, Agriculture, Nutrition and Development, 23(3): 22711-22729. https://doi.org/10.18697/ajfand.118.21975
  15. Boafo, H.A., Gbemavo, D. S. J. C., Timpong-Jones, E.C., Eziah, V., Billah, M., Chia, S.Y., Aidoo, O. F., Clottey, V. A and Kenis, M (2022). Substrates most preferred for black soldier fly Hermetia illucens (Linnaeus, 1758) (Diptera: Stratiomyidae) oviposition are not the most suitable for their larval development. Journal for Insects as Food and Feed. ISSN 2352-4588 online, DOI 10.3920/JIFF2022.0034
  16. Adogla-Bessa., T, Sarkwa, F. O., Adjorlolo, L. K., Timpong-Jones, E. C., Idan, F., Nyarko-Gyimah, A and Tudeka, C. K (2022). Performance indicators of sheep fed rice straw supplemented with browse leaves. African Journal of Food Agriculture, Nutrition and Development 22(5):20401-20414. 

https://doi.org/10.18697/ajfand.110.21925

  1. Hagan, B., Timpong-Jones, E.C and Osei-Amponsah, R (2021).  Herder-Farmer conflicts amidst COVID-19 pandemic in West Africa. Ghanaian Journal of Animal Science 12(1): 1-11
  2. Sarkwa, F. O., Adogla-Bessa, T., Timpong-Jones*, E. C and Adjorlolo, L. K (2021). Seasonal Changes in Chemical Composition, Preference and In Sacco Degradation of Eight Different Fodder Tree leaves. West African Journal of Applied Ecology 29(2): 12-23
  3. Tokozwayo, S., Mopipi, K and Timpong-Jones, E.C (2021). Influence of Tree Density on Vegetation Composition and Soil Chemical Properties in Savanna Rangeland of Eastern Cape, South Africa. Agricultural Sciences 12:991-1002. https://doi.org/10.4236/as.2021.1210064

19 Obese, F. Y., Osei-Amponsah, R., Timpong-Jones, E. C and Bekoe, E (2021). Impact of COVID-19 on animal production in Ghana. Animal Frontiers 11(1) 43-46

  1. Sarkwa, F. O., Madibela, R., Adogla-Bessa, T., Mphinyane, W. N., Perkins, J.S and Timpong-Jones* E.C (2020) Chemical composition, in vitro dry matter digestibility and Gas production of four browse species and their combinations used as feed for small ruminants. West African Journal of Applied Ecology 28(2):106-117
  2. Sarkwa, F. O., Adogla-Bessa, T., Mphinyane, W. N., Madibela, R and Timpong-Jones E.C (2020). Effort to reduce methane emission in sheep production by feeding dried browse leaves. Bulletin of Animal Health and Production in Africa. 68: 123-132 
  3. Sarkwa, F. O., Adogla-Bessa, T., Mphinyane, W. N., Madibela, R and Timpong-Jones E.C (2020). The Effect of Season and Drying on the Chemical Composition of Four Browse Species. Bulletin of Animal Health and Production in Africa. 68 (2): 133-143 
  4. Freduah, B. S., MacCarthy, D.S.,Adam,M., Ly,M., Ruane, A. C.,Timpong-Jones, E.C., Traore, P. S., Boote, K., Porter, C and Adiku, S.G.K (2019). Sensitivity of maize yield in smallholder systems to climate scenarios in Semi-Arid regions of West Africa: Accounting for variability in farm management practices.Agronomy.9(10),639; doi:10.3390/agronomy9100639www.mdpi.com/journal/agronomy
  5. Tokozwayo, S., Gulwa, U., Thubela, T., Nyangiwe, N., Mopipi, K and Timpong-Jones, E. C (2018). Pastoralists’ perceptions on the impact of Vachellia karro encroachment in communal rangelands of the Eastern Cape, South Africa. Journal of Agricultural Extension and Rural Development.10 (11): 222-233. DOI: 10.5897/JAERD2018.1001 
  6. Yeboah, R., Adogla-Bessa, T., Adjorlolo, L.K and Timpong-Jones, E.C (2017). Influence of water hyacinth plus dried cassava peels supplementation on nutrient digestibility and nitrogen balance of sheep. Asian J. Anim. Sci. 11: 165-170. http://dx.doi.org/10.3923/ajas.2017.165.170
  7. Sarkwa, F. O., Timpong-Jones*, E. C., Assuming-Bediako, N., Aikins, S and Adogla-Bessa, T (2016). The contribution of livestock production to climate change: a review. Livestock Research for Rural Development. Volume 28, Article #37. 
  8. Adjorlolo, L.K., Timpong-Jones, E.C., Boadu, S. and Adogla-Bessa, T. (2016). Potential contribution of neem (Azadirachta indica) leaves to dry season feeding of ruminants in West Africa. Livestock Research for Rural Development. Volume 28, Article #5.
  9. Timpong-Jones*, E. C., Adjorlolo, L. K and Ayizanga, R. A. (2015). The impact of harvest frequency on herbage yield and quality of Cynodon nlemfuensis. West African Journal of Applied Ecology: 23 (2): 7-15
  10. Timpong-Jones*, E. C., Adogla-Bessa, T., Adjorlolo, L. K and Sarkwa, F. O. (2014). Some constraints of ruminant livestock production in the Coastal Savannah Plains of Ghana. Livestock Research and Rural Development: 26 (5), #84

 

  1. Fynn, K. E., Fusheini, M. M., Oppong-Anane, K., Amegashie, D. P. K., Timpong-Jones*, E. C and Fianu, F. K (2014). Cost-benefit analysis and problems associated with the production of Verano seeds by smallholder livestock farmers in Ghana. Livestock Research and Rural Development: 26 (5), #83.
  2. Timpong-Jones*, E. C., Adogla-Bessa, T., Mawunya, F. D and Sarkwa, F. A. (2013). Harvest management of Sorghum bicolor to optimize forage yield and quality. Ghanaian Journal of Animal Science: 7 (2):163-174
  3. Timpong-Jones*, E. C., Mutanga, O., Adogla-Bessa, T., Attua, E. M and Adiku, S. G. K. (2013). Herbage yield and grazing capacity estimation in a tropical coastal savannah rangeland using geostatistics. WestAfrican Journal of Applied Ecology: 21 (2): 37-45
  4. Timpong-Jones*, E. C., Adogla-Bessa, T., Mugabe, P. H and Adiku, S. G. K. (2012). Browsing capacity and nutritive value of indigenous browses in a tropical coastal savannah rangeland. Bulletin of Animal Health and Production in Africa: 60 (3): 335-342
  5. Adogla-Bessa, T., Timpong-Jones, E. C., Adjorlolo, L. K., Sarkwa, F. O and Buah, M. (2012). Livestock production and browse use by traditional Agro-pastoralists in the Coastal Savannah rangelands of Ghana. Ghanaian Journal of Animal Science: 6 (1): 1-10
  6. Chinuwo, T., Gandiwa, E., Mugabe, P. H., Mpofu, I. D. T and Timpong-Jones, E. C. (2010). Effect of previous cultivation on regeneration of Julbernadia globiflora and Brachystegia spiciformis in grazing areas of Mupfurudzi resettlement scheme, Zimbabwe. African Journal of Range and Forage Science: 27 (1): 45 – 49.
  7.  Chinuwo, T., Mugabe, P. H., Mpofu, I. D. T ., Muludeta, S. D and Timpong-Jones, E. C. (2009). A synopsis of cattle performance in Zimbabwe's 'initial' resettlement areas after land reforms and redistribution.      Bulletin of Animal Health and Production in Africa: 57 (3): 285-292
  8. Timpong-Jones*, E.C., Toxopeus, A.G., Mugabe, P.H and Chinuwo, T. (2007).  Grazing Capacity Estimates: why include biomass estimates from arable lands. Bulletin of Animal Health and Production in Africa: 55: 33- 41

 

  1. Fleischer, J.E and Timpong-Jones, E.C. (1996). Studies into the dry matter yield and nutritive quality of ‘Wild Sorghum’ (Sorghum arundinaceum) and Phasey bean (Macropthylium lathyroides). African Feed Resources Network Newsletter: 6 (3): 1-4.
  2. BOOK CHAPTERS

MacCarthy, D. S., Akponikpe, P. B. I., Akinseye, F. M., Ly, M., Timpong-Jones, E. C., Hathie, I., and Adiku, S. G. K (2023). Modelling the impact of climate change on agricultural systems in West Africa. In Nendel, C. (ed.), Modelling climate change impacts on agricultural systems, pp. 667–712, Burleigh Dodds Science Publishing, Cambridge, UK (ISBN: 978 1 80146 174 0; www.bdspublishing.com). http://dx.doi.org/10.19103/AS.2022.0115.21

  1. Malik, M. A., Amin, A. B., Iqbal, Z., Bajwa, M. R. K., Aleem, M. T., Mansoor, M. A and Timpong-Jones, E. C (2023). Parasite control strategies: Pasture management. In: Rizwan, H. M and Sajid, M. S (eds.), Parasitism and Parasite control in animals: strategies for developing world. CAB International. https://doi.org/10.1079/9781800621893.0008
  2. Timpong-Jones, E.C., Adiku, S.G.K. and MacCarthy, D.S. (2019). Climate Change and Dairy Cattle Production in Ghana. In: Climate Change variability and Biophysical Land use in Ghana. (ed) Adiku S.G.K. Afram Publications (Ghana) Ltd.pp188-203
  3. Timpong-Jones, E. C (2016). Dairy cattle feeding for smallholder farmers in Ghana- feed resources for dairy cows. In: Holistic Quality Dairy Production for Smallholder Farmers & Processors in Ghana (Ch 3, pp 33-56, ISBN: 978-9988-2-4215-2) Accra, Ghana: Yen-Timtim Ghana Ltd. 
  4. Timpong-Jones, E. C., Adogla-Bessa, T., Naazie, A and Adjorlolo, L. K. (2014). Climate change: implications for the resource poor livestock farmers in Africa. In: M. Yangyuoru, A. Naazie, D.S. MacCarthy, G.O. Nkansah and S.K. Torkpo (eds.). Agricultural Research for Food Security and Sustainable Livelihood: University of Ghana  Readers Series. (Ch.14, pp. 231-248, ISBN: 978-9988-2-0787-8). Tema, Ghana: Digibooks Ghana Ltd.

 

  1. Adjorlolo, L. K., Adogla-Bessa, T and Timpong-Jones, E. C. (2014). Overcoming       the challenges of small ruminant feeding in the tropics: An opportunity to sustain livelihoods. In: M. Yangyuoru, A. Naazie, D.S. MacCarthy, G.O. Nkansah and S.K. Torkpo (eds.). Agricultural Research for Food Security and Sustainable Livelihood: University of Ghana Readers Series. (Ch.15, pp. 249-266, ISBN: 978-9988-2-0787-8). Tema, Ghana: Digibooks Ghana Ltd.

(C) EDITED, PEER REVIEWED CONFERENCE PROCEEDINGS

  1. Sarkwa, F. O., Andoh, S., Timpong-Jones, E.C., Antwi, V., Adu-Boahene, Y. F., Yeboah, E. D and Adogla-Bessa, T. (2023). A review of methane mitigation in ruminant production. Proceedings of 2nd Joint Conference of Ghana Society of Animal Production and Ghana Animal Science Association held at Kwame Nkrumah University for Science and Technology, Kumasi on 28th August to 1st September, 2023, pages 382 -398.
  2. Yeboah, E. D., Sarkwa, F. O., Mbami, R., Asiedu, P., Yeboah, R. and Timpong-Jones, E. C (2023). A review on the effects of adding leaves in the diets of monogastrics. Proceedings of 2nd Joint Conference of Ghana Society of Animal Production and Ghana Animal Science Association held at Kwame Nkrumah University for Science and Technology, Kumasi on 28th August to 1st September, 2023, pages 430-440.
  3.  Adogla-Bessa, T., Sarkwa, F.O., Adjorlolo, L. K., Timpong-Jones, E.C., Idan, F., Nyarko-Gyimah, A and Tudeka, C. K (2021).  Performance indicators of sheep fed rice straw supplemented with Browse leaves. Proceedings, 1st Joint GSAP & GASA Conference with the theme "Sustainable Rearing for Food and Jobs in The Era of COVID-19: The Role of Stakeholders in The Animal Industry". University of Development Studies, ICC, Tamale, Ghana. August 24-28, pp: 436-445.
  4. Hagan, B., Timpong-Jones, E.C and Osei-Amponsah, R (2021).  Herder-Farmer conflicts amidst COVID-19 pandemic in West Africa. Proceedings, 1st Joint GSAP & GASA Conference with the theme "Sustainable Rearing for Food and Jobs in The Era of COVID-19: The Role of Stakeholders in The Animal Industry". University of Development Studies, ICC, Tamale, Ghana. August 24-28, pp: 259-271.
  5. Agbeve, R., Tamatey, P., Sarkwa, F. O and Timpong-Jones*, E.C (2021). A review of the Impact of invasive species on rangeland productivity. Proceedings, 1st Joint GSAP & GASA Conference with the theme "Sustainable Rearing for Food and Jobs in The Era of COVID-19: The Role of Stakeholders in The Animal Industry". University of Development Studies, ICC, Tamale, Ghana. August 24-28, pp: 522-533
  6. Hagan, B., Timpong-Jones, E.C and Osei-Amponsah, R (2019). Impact of grazer-herder conflicts on agricultural production, food security and livelihoods in West Africa: a review. Proceedings of the 7th All African Conference on Animal Agriculture, organized by AASAP, GSAP and FARA. Accra International Conference Centre, Accra, Ghana. 29th July-2nd August, 2019.

47. Yeboah, R., Adogla-Bessa, T., Adjorlolo, L. K and Timpong-Jones, E. C (2017).

Influence of ensiled water hyacinth-cassava peel mix supplementation on intake and growth of sheep fed sodium hydroxide-treated rice straw. In: Hagan, J. K and Apori, S. O (Eds). Proceedings, 20th Biennial Conference of the Ghana Society of Animal Production. University of Cape Coast, Cape Coast, August 1-5, pp: 81-86.

48. Adjorlolo, L. K., Timpong-Jones, E.C., Adogla-Bessa, T and Boadu, S. (2013). Potential of Neem leaves as dry season ruminant feed in Ghana- A review. Proceedings of the 18th biennial conference of Ghana Society of Animal Production (GSAP). College of Agriculture and Consumer Sciencs, University of Ghana, Legon. 24th – 26th  July. pp 15-19. Naazie, A., Obese, F. Y., Adjorlolo, L. K., Wallace, P., Ayizanga, R and Amoah, K. O (editors)

49. Sarkwa, F. O., Adogla-Bessa, T., Timpong-Jones, E.C and Adjorlolo, L. K. (2011). Preliminary assessment of the nutritional value of eight browse species in the Coastal Savannah. Proceedings of the 17th biennial conference of Ghana Society of Animal Production (GSAP). College of Agriculture and Consumer Sciences, University of Ghana, Legon. 20th – 23rd July. pp 56 – 59. Adjorlolo, L. K., Adogla-Bessa, T and Timpong-Jones, E. C (editors)

50. Timpong-Jones, E.C., Adogla-Bessa, T., Adjorlolo, L.K. and Sarkwa, F.O. (2011). Production practices and constraints of ruminant livestock farmers in the Coastal Savannah plains of Ghana. Proceedings of the 17th biennial conference of Ghana Society of Animal Production (GSAP). College of Agriculture and Consumer Sciences, University of Ghana, Legon. 20th – 23rd July. pp 21-24. Adjorlolo, L. K., Adogla-Bessa, T and Timpong-Jones, E. C (editors).

51. Timpong-Jones, E.C., Mutanga, O., Adogla-Bessa, T., Adiku, S.G., and Attua, E.M. (2011). Dry matter yield estimation in the Coastal Savannah rangeland of Ghana using geostatistics and geographic information systems. Proceedings of the 17th biennial conference of Ghana Society of Animal Production (GSAP). College of Agriculture and Consumer Sciences, University of Ghana, Legon. 20th – 23rd July. pp 60-64. Adjorlolo, L. K., Adogla-Bessa, T and Timpong-Jones, E. C (editors).

52. Timpong-Jones, E.C., Akrobortu, D.E., Fianu, F.K., Oppong-Anane, K and Fynn, K.E. (2005). Preliminary observations on the effect of planting date on seed yield of Stylosanthes hamata c.v Verano. Proceedings of the 14th biennial conference of Ghana Society of Animal Production (GSAP). Radash memorial centre, Tamale-Ghana. 31st  August – 3rd September . pp 130-136. Oppong- Anane, K., Naazie, A and Adogla-Bessa, T (editors)

(D) NEWSLETTERS

53. Timpong-Jones, E. C and Adogla-Bessa, T. (2012). Tree density and growth of herbaceous species in Savannah rangelands. Ghana Society of Animal Production(GSAP) Newsletter:10 (2): 2. Osei-Amponsah R and Ayizanga R. (editors)

(E) TECHNICAL REPORT 

54. Rusudan, M., Timpong-Jones, E. C et al (2026). Landscapes of pastoral transhumance: a thematic approach. Published by International Council on Monuments and Sites (ICOMOS). ISBN 978-2-487082-19-9 (PDF), ISBN 978-2-487082-20-5 (print). 95pp. https://publ.icomos.org/publicomos/jlbSai?html=Pag&page=Pml/Not&base=technica&ref=C604E6D7C54805F538009EE2C7059016

55. Fianu, F.K and Timpong-Jones, E.C. (2004). Forage Production and Conservation. Proceedings of the end of target project stakeholders workshop, Ghana Peri- Urban dairy project. CSIR- Science and Technology Policy Research Institute (STEPRI). 30th March. pp 41-43. W. S. Alhassan (editor)

MEMBERSHIP OF SCIENTIFIC AND PROFESSIONAL BODIES

  1. Ghana Society of Animal Production (GSAP). 1996- date
    1. (Member of Organizing Committee for 17th Biennial conference held at the College of Agriculture and Consumer Sciences, University of Ghana, in July. 2011)
      1. (Member of Organizing Committee for 18th Biennial conference held at the Noguchi Memorial Institute, University of Ghana, in July, 2013)
  2. Ghana Animal Science Association (GASA). 1996 to date 
  3. Grassland Society of Southern Africa (GSSA). 2015 to date
  4. All Africa Society for Animal Production (AASAP). 2010 to date
  5. University Teachers’ Association (UTAG). 2002 to date

International Foundation for Science (IFS). Ghana Alumni Association. Secretary- 2015 to date