Dr Karen Harper
Honorary Senior Research Fellow
School of Agriculture and Food Sustainability
Publications
Book Chapter
Harper, Karen J. and Tait, L. Amy (2019). Livestock industries in Australia: production systems and management. Livestock: production, management strategies and challenges. (pp. 79-136) edited by Victor Roy Squires and Wayne L. Bryden. Hauppauge, NY, United States: Nova Science Publishers.
Journal Articles
Dahlanuddin, , Kariyani, L. A., Panjaitan, T. S., Putra, R. A., Harper, K. J. and Poppi, D. P. (2024). Growth rate of male Bali cattle (Bos javanicus) fed leucaena and rice straw diets with increasing levels of cassava. Animal Production Science, 64 (13) ARTN AN24070. doi: 10.1071/an24070
Hidayat, Julian, Panjaitan, Tanda, Dahlanuddin,, Harper, Karen and Poppi, Dennis (2023). Utilising locally based energy supplements in leucaena and corn stover diets to increase the average daily gain of male Bali cattle and the income of smallholder farmers. Animal Production Science, 64 (1) 23217, 1-8. doi: 10.1071/an23217
Gunawan,, Winarti, E., Sofyan, A., Putridinanti, A. D., Andarwati, S., Noviandi, C. T., Agus, A., Harper, K. J. and Poppi, D. P. (2023). Improving growth rates of Ongole crossbred bulls by formulation and level of supplement of by-products. Animal Production Science, 64 (1) 23229, 1-6. doi: 10.1071/an23229
Supriadi, Dedi, Panjaitan, Tanda, Dahlanuddin, Putra, Ryan Aryadin, Harper, Karen and Poppi, Dennis (2022). Liveweight gain response of Bali bulls fed leucaena and cassava peels to increasing levels of fermented corn stover in diets. Jurnal Triton, 13 (2), 197-205. doi: 10.47687/jt.v13i2.255
Costa, Diogo Fleury Azevedo, Castro-Montoya, Joaquin Miguel, Harper, Karen, Trevaskis, Leigh, Jackson, Emma and Quigley, Simon (2022). Algae as feedstuff for ruminants: a focus on single-cell species, opportunistic use of algal by-products and on-site production. Microorganisms, 10 (12) 2313, 2313. doi: 10.3390/microorganisms10122313
Winarti, E., Gunawan, Sofyan, A., Wirasti, C. A., Noviandi, C. T., Panjono, Agus. A., Harper, K. J. and Poppi, D. P. (2022). Improving live weight gain in Ongole crossbred bulls through processing of Gliricidia sepium leaf meal and cassava in a supplement concentrate. Animal Feed Science and Technology, 292 115401, 115401. doi: 10.1016/j.anifeedsci.2022.115401
Castro-Montoya, Joaquín M., González, F. L., Mendoza, M. V., Harper, K. and Corea, E. E. (2022). Interrelationship between diseases and calving season and their impact on reproductive parameters and milk production of tropical dairy cows. Tropical Animal Health and Production, 54 (3) 158, 158. doi: 10.1007/s11250-022-03151-5
Kusmartono, Retnaningrum, S., Mashudi, Harper, K.J. and Poppi, D.P. (2022). Improving live weight gain of crossbred Limousin bulls with cassava peel silage. animal, 16 (5) 100524, 1-7. doi: 10.1016/j.animal.2022.100524
Pan, Liyi, Harper, Karen, Queiroz, Oscar, Copani, Giuseppe and Cappellozza, Bruno I (2022). Effects of a Bacillus-based direct-fed microbial on in vitro nutrient digestibility of forage and high-starch concentrate substrates. Translational Animal Science, 6 (2) txac067, txac067. doi: 10.1093/tas/txac067
Lwin, D. S., Williams, A., Barber, D. E., Benvenutti, M. A., Williams, B., Poppi, D. P. and Harper, K. J. (2022). Comparison of equations to predict the metabolisable energy content as applied to the vertical strata and plant parts of forage sorghum (Sorghum bicolor). Animal Production Science, 62 (11), 1006-1013. doi: 10.1071/an21510
Winarti, E., Gunawan, , Putridinanti, A. D., Noviandi, C. T., Andarwati, S., Agus, A., Harper, K. J. and Poppi, D. P. (2022). Utilising Gliricidia sepium leaf meal as a protein substitute in cassava-based supplements to increase average daily gain of Ongole bulls and income of smallholder farmers. Animal Production Science, 62 (7), 676-681. doi: 10.1071/an21595
Kariyani, Luh Ade, Dahlanuddin, Panjaitan, Tanda, Putra, Ryan Aryadin, Harper, Karen and Poppi, Dennis (2021). Increasing the level of cassava chips or cassava pulp in leucaena based diets increases feed intake and live weight gain of Bali bulls. Livestock Research for Rural Development, 33 (9).
Poppi, Dennis P., Kusmartono, Kusmartono, Kasmyati, Kasmyati, Quigley, Simon P. and Harper, Karen J. (2021). Feeding strategies for improving ruminant productivity in the post-COVID 19 pandemic era particularly for small holders. Jurnal Ilmu-Ilmu Peternakan, 31 (1), 84-94. doi: 10.21776/ub.jiip.2021.031.01.11
Marsetyo, Sulendre, I. W., Takdir, M., Harper, K. J. and Poppi, D. P. (2021). Formulating diets based on whole cassava tuber (Manihot esculenta) and gliricidia (Gliricidia sepium) increased feed intake, liveweight gain and income over feed cost of Ongole and Bali bulls fed low quality forage in Central Sulawesi, Indonesia. Animal Production Science, 61 (8), 761-769. doi: 10.1071/an20297
Parra, M. C., Costa, D. F. A., Palma, A. S. V., Camargo, K. D. V., Lima, L. O., Harper, K. J., Meale, S. J. and Silva, L. F. P. (2021). The use of live yeast to increase intake and performance of cattle receiving low-quality tropical forages. Journal of Animal Science, 99 (2) skab017, 1-13. doi: 10.1093/jas/skab017
Fulkerson, William J., Jennings, Nathan R., Callow, Mark, Harper, Karen J., Wong, Percy T.W. and Martin, Peter M. (2021). Selection for resistance to fungal diseases and other desirable traits in kikuyu grass (Cenchrus clandestinus). Tropical Grasslands-Forrajes Tropicales, 9 (1), 60-69. doi: 10.17138/tgft(9)60-69
Poppi, D. P., Gunawan, Antari, R. and Harper, K. J. (2020). Strategies to improve local beef cattle industry supply chains during the pandemic of Covid-19. Prosiding seminar nasional eknologi Peternakan dan Veteriner.
Retnaningrum, S., Kusmartono, , Mashudi, , Harper, K.J. and Poppi, D.P. (2020). Formulating rations with cassava meal to promote high live weight gain in crossbred Limousin bulls. Animal, 15 (2) 100125, 1-7. doi: 10.1016/j.animal.2020.100125
Le, Oanh T., Dart, Peter J., Harper, Karen, Zhang, Dagong, Schofield, Benjamin, Callaghan, Matthew J., Lisle, Allan T., Klieve, Athol V. and McNeill, David M. (2017). Effect of probiotic Bacillus amyloliquefaciens strain H57 on productivity and the incidence of diarrhoea in dairy calves. Animal Production Science, 57 (5), 912-919. doi: 10.1071/AN15776
O'Hara, Patricia J., Klieve, Athol V., Murray, Peter J., Maguire, Anita J., Ouwerkerk, Diane and Harper, Karen (2016). Effect of time and diet change on the bacterial community structure throughout the gastrointestinal tract and in faeces of the northern brown bandicoot, Isoodon macrourus. Australian Journal of Zoology, 64 (1), 48-60. doi: 10.1071/ZO15078
Harper, Karen J. and McNeill, David M. (2015). The role iNDF in the regulation of feed intake and the importance of its assessment in subtropical ruminants systems (The role of iNDF in the regulation of forage intake). Agriculture, 5 (3), 778-790. doi: 10.3390/agriculture5030778
Conference Papers
Pan, Liyi, Eyre, Karen, Harper, Karen and Prada e Silva, Luis (2023). Using specific Bacillus strains to improve digestibility and performance of growing steers. ASAS Annual 2023 Meeting, Athens, Greece, 13-14 January 2023. Cary, NC, United States: Oxford University Press. doi: 10.1093/jas/skad281.329
Campbell, Shane, Oudyn, Fred, Campbell, Rose, Crossing, Megan, Connolly, Alana, Harper, Karen, Vogler, Wayne, Martin, Stephen and Vitelli, Joe (2022). Herbicide and fertilizer application trials to improve production in Giant rat's tail grass (GRT) infested pastures. 22nd Australasian Weeds Conference, Adelaide, SA Australia, 25 - 29 September 2022. Torrens Park, SA Australia: Weed Management Society of South Australia.
Pan, Liyi, Harper, Karen, Cappellozza, Bruno, Copani, Giuseppe and Queiroz, Oscar (2022). PSVIII-11 In vitro incubation with a Bacillus-based direct-fed microbial improves starch digestibility. 2022 ASAS-CSAS Annual Meeting & Trade Show, Oklahoma City, OK, United States, 26 - 30 June 2022. Cary, NC, United States: Oxford University Press. doi: 10.1093/jas/skac247.718
Pan, Liyi, Harper, Karen, Cappellozza, Bruno, Copani, Giuseppe and Queiroz, Oscar (2022). PSVIII-10 In vitro incubation with a Bacillus-based direct-fed microbial improves forage digestibility parameters. 2022 ASAS-CSAS Annual Meeting & Trade Show, Oklahoma City, OK, United States, 26 - 30 June 2022. Cary, NC, United States: Oxford University Press. doi: 10.1093/jas/skac247.717
Daulay, Muhammad Rizqi Hariz, Paradhipta, Dimas Hand Vidya, Noviandi, Cuk Tri, Agus, Ali, Astuti, Andriyani and Harper, Karen (2022). Supplementation effects of ground cassava and cassava leaves with different ratios on in vitro digestibility of rice straw based diet. 9th International Seminar on Tropical Animal Production (ISTAP 2021), Yogyakarta, Indonesia, 21-22 September 2021. Paris, France: Atlantis Press. doi: 10.2991/absr.k.220207.004
Poppi, D.P., Priyanti, A, Kusmartono, Marsetyo, Dahlanuddin, Panjaitan, T., Antari, R., Harper, K.J. and Quigley, S.P. (2021). Moving into more profitable beef production systems. The 4th International Seminar on Livestock Production and Veterinary Technology, Bogor, Indonesia, 6-7th September, 2021. Jakarta, Indonesia: IAARD press.
Parra, M.C. , Camargo, K.D.V. , Costa, D.F.A. , Harper, K.J. , Meale, S.J. and Silva, L.F.P. (2021). Live yeast increased the rate of feed digestion in cattle fed a protein deficient diet. 33rd Biennial Conference of the Australian Association of Animal Sciences, Fremantle, Australia, 1-3 February 2021.
Lwin, D.S., Barber, D. , Benvenutti, M., Williams, B. , Poppi, D. and Harper, K. (2021). Variation of nutritional parameters in the strata of tropical forages. 33rd Biennial Conference of the Australian Association of Animal Sciences, Fremantle, Australia, 1-3 February 2021. Australian Association of Animal Sciences.
Setiadi, D., Kusmartono, , Kasmiyati, , Mashudi, , Zakariya, A. Z., Harper, K. J. and Poppi, D. P. (2020). The Weight Gain and Growth of Crossbred Bulls Fed Locally Inspired Supplements Compared with Current Feeding Systems in Village Smallholdings in Malang, East Java. Animal Production International Seminar, Malang, Indonesia, 24-27 October 2019. Bristol, United Kingdom: Institute of Physics Publishing. doi: 10.1088/1755-1315/478/1/012037
Retnaningrum, S., Kusmartono, , Mashudi, , Harper, K. J. and Poppi, D. (2020). Effect of using different levels of cassava meal on nutrient intake, fiber digestibility and body condition score in crossbreed Limousin bulls. Animal Production International Seminar, Malang, Indonesia, 24-27 October 2019. Bristol, United Kingdom: Institute of Physics Publishing. doi: 10.1088/1755-1315/478/1/012065
Setiadi, Deni, Kasmiati, Kasmiati, Zakariya, Abu Z., Harper, Karen and Poppi, Dennis (2020). Cassava-based diets increase live weight gain of cross bred bulls in small fattening systems in Malang, East Java. The Third International Tropical Agriculture Conference TropAg 2019 , Brisbane, QLD Australia, 11–13 November 2019. Basel, Switzerland: MDPI. doi: 10.3390/proceedings2019036214
Sulendre, I. Wayan, Marsetyo, Marsetyo, Takdir, Muh, Harper, Karen and Poppi, Dennis Paulus (2020). High level of energy and protein supplementation effect on feed intake and liveweight gain of Bali bulls fed elephant grass. The Third International Tropical Agriculture Conference TropAg 2019 , Brisbane, QLD Australia, 11-13 November 2019. Basel, Switzerland: MDPI. doi: 10.3390/proceedings2019036091
Asrianto, N., Andarwati, S., Nurtini, S., Putridinanti, A. D., Gunawan, Harper, K. and Poppi, D. (2019). Increased of farmer's income through use cassava as main ingredient of beef cattle concentrate feed in Playen Subdistrict, Gunungkidul, Yogyakarta. The 8th International Seminar on Tropical Animal Production, Yogyakarta, Indonesia, 23-25 September 2019. Yogyakarta, Indonesia: Universitas Gadjah Mada.
Kusmartono, K., Surya, Retnaningrum, Mashudi, M., Harper, Karen and Poppi, Dennis (2019). Response of growing bulls to increasing levels of cassava meal in a concentrate maize stover diet. International Symposium on Ruminant Physiology, Leipzig, Germany, 3-6 September 2019. Cambridge, United Kingdom: Cambridge University Press.
Marsetyo, Marsetyo, Sulendre, I.Wayan, Takdir, Moh, Harper, Karen and Poppi, Dennis (2019). Feed intake and liveweight gain of Bali bulls fed low quality forage supplemented wit increasing levels of cassava and gliricidia. International Symposium on Ruminant Physiology, Leipzig, Germany, 3-6 September 2019. Cambridge, United Kingdom: Cambridge University Press.
Harper, Karen , Zulu, Bonna, Isherwood, Peter and Poppi, Dennis (2019). The rate of disappearance of Hydrocyanic Acid (HCN) from cassava plant parts under drying or silage processing methods. International Symposium on Ruminant Physiology, Leipzig, Germany, 3-6 September 2019. Cambridge, United Kingdom: Cambridge University Press. doi: 10.1017/S2040470019000037
Putridinanti, A. D., Noviandi, C. T., Gunawan, Agus, A., Harper, K. and Poppi, D. (2019). A comparison of three highly fermentable carbohydrate sources (corn, cassava powder or cassava pulp) on in vitro digestion. The 8th International Seminar on Tropical Animal Production, Yogyakarta, Indonesia, 23–25 September 2019. Bristol, United Kingdom: Institute of Physics Publishing. doi: 10.1088/1755-1315/387/1/012106
Harper, Karen, Quigley, Simon P., Antari, Risa, Dahlanuddin,, Panjaitan, Tanda Sahat, Marsetyo, and Poppi, Dennis P. (2019). Energy supplements for leucaena. International Leucaena Conference (ILC), Brisbane, Australia, 29 October-3 November 2018. Cali, Colombia: Centro Internacional de Agricultura Tropical (CIAT). doi: 10.17138/TGFT(7)182-188
Mardiyanto, Mohammad , Subagio, A. , Poppi, D. and Harper, K. (2018). Effect of drying and withering process on cyanate content of cassava plant parts. International seminar on livestock production and veterinary technology, Puslitbangnak, Medan, Indonesia, 16-18 October 2018.
Harper, Karen, Panjaitan, Tanda, Gulino, Lisa-Maree, Quigley, Simon, Klieve, Athol, Ouwerker, Dianne and Poppi, Dennis (2018). The relationship between efficiency of microbial crude protein production and rumen microbial community structure in steers fed tropical pastures. International Symposium on the Nutrition of Herbivores, Clermont-Ferrand, France, 2-6 September 2018. Cambridge, United Kingdom: Cambridge University Press.
Fitriyana N.I., Yuliana E.B., Harper K. and Subagio A. (2017). Kandungan senyawa linamarin pada beberapa varietas umbi singkong. Seminar nasional PATPI, Perhimpunan Ahli Teknologi Pangan, Indonesia, Lampung, 10-12 Oktober, 2017. Jember, Indonesia: Repository Universitas Jember.
Poppi, D. P., Marsetyo, Quigley, S. P., Mayberry, D. E., Cowley, F., Harper, K. J. and McLennan, S. R. (2017). Bridging the gap: strategies to increase live weight gain and profitability in beef cattle in Indonesia. The 5th International Seminar of Animal Nutrition and Feed Sciences, Mataram, Indonesia, 7-19 November, 2017. Bogor, Indonesia: Indonesian association of nutrition and feed scientists.
Harper K, Callow M and Fulkerson W (2016). Assessing the biodiversity of kikuyu pasture genotypes: Growth and forage quality. Animal Production 2016, Adelaide, South Australia, 4-7 July 2016. Roseworthy, SA, Australia: University of Adelaide.
Thinh, Chu Tuan, Bang, Nguyen Ngoc, Thanh, Nguyen Chi and Karen Harper (2015). Comparing methodologies for the in situ and in vitro digestion of forages to indigestible neutral detergent fibre. National Conference on Animal and Veterinary Sciences, Can Tho, Vietnam, 28 - 29 April, 2015. Can Tho, Vietnam:
Harper, K. J. and McNeill, D. M. (2014). Direct in vitro measurement of indigestible neutral detergent fibre to improve the prediction of milk production from subtropical forages. MODNUT 2014: 8th International Workshop: Modelling Nutrient Digestion and Utilization in Farm Animals, Cairns, QLD, Australia, 15-17 September, 2014. Clayton, VIC, Australia: C S I R O Publishing. doi: 10.1071/ANv54n12abstracts
Harper, K. J., Isherwood, P., Barber, D., Callow, M., McNeill, D. M. and Poppi, D. P. (2014). Prediction of iNDF of subtropical forages by near infrared reflectance spectroscopy. Herbivores 2014: 1st Joint International Symposium on the Nutrition of Herbivores / International Symposium on Ruminant Physiology (Joint ISNH/ISRP International Conference 2014) held in conjunction with the 30th Biennial Conference of the Australian Society of Animal Production, Canberra, ACT, Australia, 8-12 September, 2014. Toowong, QLD, Australia: The Australian Society of Animal Production.
Harper, K. J., Barber, D., Callow, M., McNeill, D. M and Poppi, D. P. (2014). Assessment of the iNDF of subtropical pastures. Herbivores 2014: 1st Joint International Symposium on the Nutrition of Herbivores / International Symposium on Ruminant Physiology (Joint ISNH/ISRP International Conference 2014) held in conjunction with the 30th Biennial Conference of the Australian Society of Animal Production, Canberra, ACT, Australia, 8-12 September, 2014. Toowong, QLD, Australia: The Australian Society of Animal Production.
Harper, K. J., Panjaitan, T., Gulino, L.-M., Kleive, A. V., Quigley, S. P. and Poppi, D. P. (2013). The effects of spirulina algae supplementation on the rumen microbial community of beef cattle. Northern Beef Research Update Conference 2013, Cairns, QLD, Australia, 12-15 August, 2013.
Harper, K. J., Costa, D .F. A., Gulino, L.-M., Klieve, A. V., McLennan, S. R., Quigley, S. P. and Poppi, D. P. (2013). The association between liveweight gain and rumen microbial diversity in cattle. Northern Beef Research Update Conference 2013, Cairns, QLD, Australia, 12-15 August, 2013.
Faizah, H. M. S., Maguire, A., Harper, K., Sultan, A., Li, X., Klieve, A. V. and Bryden, W. L. (2011). Caecal microflora composition of broilers fed sorghum diets containing feed enzymes. Annual Australian Poultry Science Symposium, Sydney, Australia, 14-16 February 2011. Camden, NSW, Australia: Poultry Research Foundation.
Harper, K. J., Klieve, A.V., Panjaitan, T., Poppi, D. P. and Ouwerkerk, D. (2010). Changes in the rumen bacterial community in steers fed with supplemented tropical pasture. 28th Biennial Conference of the Australian Society of Animal Production, Armidale, N.S.W., Australia, 11-15 July 2010. Parkridge, Qld., Australia: Australian Society of Animal Production.
Research Report
Harper, Karen, Poppi, Dennis, Noviandi, Cuk Tri, Agus, Ali, Gunawan, Quigley, Simon, McCosker, Kieren, Kusmartono, Takdir, Moh., Dahlanuddin, Dahlan, Panjaitan, Tanda, Kasmiyati and Subagio, Achmad (2022). Profitable feeding strategies for smallholder cattle in Indonesia - final report. Final Report Canberra, ACT Australia: Australian Centre for International Agricultural Research.
Thesis
Karen Harper (2011). The association between rumen microbial protein production with rumen microbial community structure.. PhD Thesis, School of Agriculture and Food Sciences, The University of Queensland.