Article

Sari, N. F., Kliem, K. E. ORCID: https://orcid.org/0000-0002-0058-8225, Whistance, L., Smith, J., Natalello, A., Christodoulou, C. ORCID: https://orcid.org/0000-0001-9465-3886, Crompton, L. A., Theodoridou, K., Ray, P. ORCID: https://orcid.org/0000-0001-8375-8279, Rymer, C. ORCID: https://orcid.org/0000-0002-3535-4330 and Stergiadis, S. ORCID: https://orcid.org/0000-0002-7293-182X (2025) Tannin variation in tree fodder from temperate climates and implications for methane emissions from enteric fermentation. Animal Feed Science and Technology, 323. 116299. ISSN 1873-2216 doi: 10.1016/j.anifeedsci.2025.116299

Mavrommatis, A., Severgnini, M., Cremonesi, P., Kyriakaki, P., Christodoulou, C. ORCID: https://orcid.org/0000-0001-9465-3886, Petropoulos, K., Dunière, L., Kotsampasi, B., Castiglioni, B., Balaskas, C., Chevaux, E. and Tsiplakou, E. (2025) The impact of probiotic live yeast in a barley grain-based diet on rumen microbial communities, fermentation, and histology of artificially reared lambs. Animal Feed Science and Technology, 322. 116269. ISSN 1873-2216 doi: 10.1016/j.anifeedsci.2025.116269

Christodoulou, C. ORCID: https://orcid.org/0000-0001-9465-3886, Kliem, K. E. ORCID: https://orcid.org/0000-0002-0058-8225, Auffret, M. D., Humphries, D. J., Newbold, J. R., Davison, N., Crompton, L., Dhanoa, M. S., Smith, L. G. ORCID: https://orcid.org/0000-0002-9898-9288 and Stergiadis, S. ORCID: https://orcid.org/0000-0002-7293-182X (2025) In vitro rumen degradation, fermentation, and methane production of four agro-industrial protein-rich co-products, compared with soyabean meal. Animal Feed Science and Technology, 319. 116151. ISSN 1873-2216 doi: 10.1016/j.anifeedsci.2024.116151

Christodoulou, C. ORCID: https://orcid.org/0000-0001-9465-3886, Kliem, K. E. ORCID: https://orcid.org/0000-0002-0058-8225, Auffret, M. D., Humphries, D. J., Kirton, P. ORCID: https://orcid.org/0009-0001-1941-003X, Jalal, H., Newbold, J. R., Davison, N., Smith, L. G. ORCID: https://orcid.org/0000-0002-9898-9288 and Stergiadis, S. ORCID: https://orcid.org/0000-0002-7293-182X (2025) Nutrient use and methane emissions in growing beef fed different protein sources and a pasture-based diet. Journal of Animal Science, 103. skaf007. ISSN 1525-3163 doi: 10.1093/jas/skaf007

Mavrommatis, A., Christodoulou, C. ORCID: https://orcid.org/0000-0001-9465-3886, Kyriakaki, P., Skourtis, A., Kotsampasi, B., Christodoulou, V., Symeon, G., Karatzia, M., Karatosidi, D., Savvidou, S., Righi, F., Arsenos, G., Chevaux, E. and Tsiplakou, E. (2024) The impact of probiotic live yeast in a barley grain-based diet on feed efficiency, carcass traits, and immune-oxidative status of artificially reared lambs. Animal Feed Science and Technology, 309. 115915. ISSN 1873-2216 doi: 10.1016/j.anifeedsci.2024.115915

Christodoulou, C. ORCID: https://orcid.org/0000-0001-9465-3886, Skourtis, A., Kyriakaki, P., Fokion Satolias, F., Karabinas, D., Briche, M., Salah, N., Zervas, G., Mavrommatis, A. and Tsiplakou, E. (2023) The effect of dietary supplementation with probiotic and postbiotic yeast products on ewes milk performance and immune oxidative status. Journal of Fungi, 9 (12). 1139. ISSN 2309-608X doi: 10.3390/jof9121139

Pappas, A. C., Charisi, A., Chatziantoniou, C. M., Giamouri, E., Mitsiopoulou, C., Moschopoulos, V., Christodoulou, C. ORCID: https://orcid.org/0000-0001-9465-3886, Papadomichelakis, G., Kotsampasi, B., Mitsopoulos, I. K., Tsiplakou, E. and Bampidis, V. A. (2023) Effects of dietary pomegranate seed oil addition to diets for laying hens on fatty acid profile of eggs. Animal Feed Science and Technology, 300. 115643. ISSN 1873-2216 doi: 10.1016/j.anifeedsci.2023.115643

Giamouri, E., Zisis, F., Mitsiopoulou, C., Christodoulou, C. ORCID: https://orcid.org/0000-0001-9465-3886, Pappas, A. C., Simitzis, P. E., Kamilaris, C., Galliou, F., Manios, T., Mavrommatis, A. and Tsiplakou, E. (2023) Sustainable strategies for greenhouse gas emission reduction in small ruminants farming. Sustainability, 15 (5). 4118. ISSN 2071-1050 doi: 10.3390/su15054118

Christodoulou, C. ORCID: https://orcid.org/0000-0001-9465-3886, Mavrommatis, A., Loukovitis, D., Symeon, G., Dotas, V., Kotsampasi, B. and Tsiplakou, E. (2023) Effect of Spirulina dietary supplementation in modifying the rumen microbiota of ewes. Animals, 13 (4). 740. ISSN 2076-2615 doi: 10.3390/ani13040740

Christodoulou, C. ORCID: https://orcid.org/0000-0001-9465-3886, Mavrommatis, A., Loukovitis, D., Symeon, G., Dotas, V., Kotsampasi, B. and Tsiplakou, E. (2023) Inclusion of Camelina sativa seeds in ewes’ diet modifies rumen microbiota. Animals, 13 (3). 377. ISSN 2076-2615 doi: 10.3390/ani13030377

Zisis, F., Giamouri, E., Mitsiopoulou, C., Christodoulou, C. ORCID: https://orcid.org/0000-0001-9465-3886, Kamilaris, C., Mavrommatis, A., Pappas, A. C. and Tsiplakou, E. (2023) An overview of poultry greenhouse gas emissions in the Mediterranean area. Sustainability, 15 (3). 1941. ISSN 2071-1050 doi: 10.3390/su15031941

Christodoulou, C. ORCID: https://orcid.org/0000-0001-9465-3886, Kotsampasi, B., Dotas, V., Simoni, M., Righi, F. and Tsiplakou, E. (2023) The effect of Spirulina supplementation in ewes’ oxidative status and milk quality. Animal Feed Science and Technology, 295. 115544. ISSN 1873-2216 doi: 10.1016/j.anifeedsci.2022.115544

Christodoulou, C. ORCID: https://orcid.org/0000-0001-9465-3886, Mavrommatis, A., Simoni, M., Righi, F., Prandi, B., Tedeschi, T., Sforza, S. and Tsiplakou, E. (2022) The amino acid profile of Camelina sativa seeds correlates with the strongest immune response in dairy ewes. animal, 16 (9). 100621. ISSN 1751-732X doi: 10.1016/j.animal.2022.100621

Mavrommatis, A., Zografaki, M.-E., Marka, S., Myrtsi, E. D., Giamouri, E., Christodoulou, C. ORCID: https://orcid.org/0000-0001-9465-3886, Evergetis, E., Iliopoulos, V., Koulocheri, S. D., Moschopoulou, G., Simitzis, P. E., Pappas, A. C., Flemetakis, E., Koutinas, A., Haroutounian, S. A. and Tsiplakou, E. (2022) Effect of a carotenoid extract from Citrus reticulata by-products on the immune-oxidative status of broilers. Antioxidants, 11 (1). 144. ISSN 2076-3921 doi: 10.3390/antiox11010144

Christodoulou, C. ORCID: https://orcid.org/0000-0001-9465-3886, Mavrommatis, A., Mitsiopoulou, C., Symeon, G., Dotas, V., Sotirakoglou, K., Kotsampasi, B. and Tsiplakou, E. (2021) Assessing the optimum level of supplementation with Camelina seeds in ewes’ diets to improve milk quality. Foods, 10 (9). 2076. ISSN 2304-8158 doi: 10.3390/foods10092076

Christodoulou, C. ORCID: https://orcid.org/0000-0001-9465-3886, Moorby, J. M., Tsiplakou, E., Kantas, D. and Foskolos, A. (2021) Evaluation of nitrogen excretion equations for ryegrass pasture-fed dairy cows. animal, 15 (9). 100311. ISSN 1751-732X doi: 10.1016/j.animal.2021.100311

Mavrommatis, A., Mitsiopoulou, C., Christodoulou, C. ORCID: https://orcid.org/0000-0001-9465-3886, Kariampa, P., Simoni, M., Righi, F. and Tsiplakou, E. (2021) Effects of supplementing rumen-protected methionine and lysine on milk performance and oxidative status of dairy ewes. Antioxidants, 10 (5). 654. ISSN 2076-3921 doi: 10.3390/antiox10050654

Kotsampasi, B., Christodoulou, C. ORCID: https://orcid.org/0000-0001-9465-3886, Mavrommatis, A., Mitsiopoulou, C., Bampidis, V. A., Christodoulou, V., Chronopoulou, E. G., Labrou, N. E. and Tsiplakou, E. (2021) Effects of dietary pomegranate seed cake supplementation on performance, carcass characteristics and meat quality of growing lambs. Animal Feed Science and Technology, 273. 114815. ISSN 1873-2216 doi: 10.1016/j.anifeedsci.2021.114815

Mavrommatis, A., Mitsiopoulou, C., Christodoulou, C. ORCID: https://orcid.org/0000-0001-9465-3886, Karabinas, D., Nenov, V., Zervas, G. and Tsiplakou, E. (2020) Dietary supplementation of a live yeast product on dairy sheep milk performance, oxidative and immune status in peripartum period. Journal of Fungi, 6 (4). 334. ISSN 2309-608X doi: 10.3390/jof6040334

Kotsampasi, B., Tsiplakou, E., Christodoulou, C. ORCID: https://orcid.org/0000-0001-9465-3886, Mavrommatis, A., Mitsiopoulou, C., Karaiskou, C., Sossidou, E., Fragioudakis, N., Kapsomenos, I., Bampidis, V. A., Christodoulou, V. and Zervas, G. (2018) Effects of dietary orange peel essential oil supplementation on milk yield and composition, and blood and milk antioxidant status of dairy ewes. Animal Feed Science and Technology, 245. pp. 20-31. ISSN 1873-2216 doi: 10.1016/j.anifeedsci.2018.08.007

Kotsampasi, B., Christodoulou, C. ORCID: https://orcid.org/0000-0001-9465-3886, Tsiplakou, E., Mavrommatis, A., Mitsiopoulou, C., Karaiskou, C., Dotas, V., Robinson, P. H., Bampidis, V. A., Christodoulou, V. and Zervas, G. (2017) Effects of dietary pomegranate pulp silage supplementation on milk yield and composition, milk fatty acid profile and blood plasma antioxidant status of lactating dairy cows. Animal Feed Science and Technology, 234. pp. 228-236. ISSN 1873-2216 doi: 10.1016/j.anifeedsci.2017.08.017

Kotsampasi, B., Bampidis, V. A., Tsiaousi, A., Christodoulou, C. ORCID: https://orcid.org/0000-0001-9465-3886, Petrotos, K., Amvrosiadis, I., Fragioudakis, N. and Christodoulou, V. (2017) Effects of dietary partly destoned exhausted olive cake supplementation on performance, carcass characteristics and meat quality of growing lambs. Small Ruminant Research, 156. pp. 33-41. ISSN 1879-0941 doi: 10.1016/j.smallrumres.2017.08.013

Kotsampasi, B., Bampidis, V. A., Christodoulou, C. ORCID: https://orcid.org/0000-0001-9465-3886, Theophilou, N. and Christodoulou, V. (2017) Effect of dietary palygorskite on performance of lactating ewes. Applied Clay Science, 143. pp. 76-79. ISSN 1872-9053 doi: 10.1016/j.clay.2017.03.020

Book or Report Section

Georganas, A., Giamouri, E., Christodoulou, C. ORCID: https://orcid.org/0000-0001-9465-3886, Mavrommatis, A., Zoidis, E., Papadomichelakis, G., Simitzis, P. E., Tsiplakou, E., Pappas, A. C. and Fegeros, K. (2021) Impact of bioactive compounds on animals and the environment. In: Yildiz, G. and İzli, G. (eds.) Bioactive Compounds and their Importance. Nova Science Publishers. ISBN 9781685073619 doi: 10.52305/AFDL7660

Conference or Workshop Item

Davison, N., Gossel, C., Smith, J., Palma, J.H.N., Tomas, A., Whistance, L., Christodoulou, C. ORCID: https://orcid.org/0000-0001-9465-3886, Stergiadis, S. ORCID: https://orcid.org/0000-0002-7293-182X and Smith, L. ORCID: https://orcid.org/0000-0002-9898-9288 (2025) Economic and greenhouse gas trade-offs of innovative livestock systems in Europe. In: Livestock, Environment and People (LEAP) Conference 2025, 8 April 2025, Oxford, UK, p. 12.

Christodoulou, C. ORCID: https://orcid.org/0000-0001-9465-3886, Kliem, K. ORCID: https://orcid.org/0000-0002-0058-8225, Auffret, M., Humphries, D., Kirton, P. ORCID: https://orcid.org/0009-0001-1941-003X, Jalal, H., Newbold, J., Davison, N., Smith, L. ORCID: https://orcid.org/0000-0002-9898-9288, Stergiadis, S. ORCID: https://orcid.org/0000-0002-7293-182X and Stergiadis, S. (2025) Effect of protein source and a pasture-based diet on beef performance and methane emissions. In: British Society of Animal Science Annual Conference, 8-10 April 2025, Galway, Ireland. (In Press)

Christodoulou, C. ORCID: https://orcid.org/0000-0001-9465-3886, Malik, M., Kliem, K. ORCID: https://orcid.org/0000-0002-0058-8225, Davison, N., Smith, L. ORCID: https://orcid.org/0000-0002-9898-9288 and Stergiadis, S. ORCID: https://orcid.org/0000-0002-7293-182X (2025) Effects of microalgae on in vitro rumen degradation, fermentation characteristics, and methane yield. In: 76th Annual Meeting of the European Association of Animal Production, 24-29 August 2025, Innsbruck, Austria. (Book of Abstracts of the 76th Annual Meeting of the European Association of Animal Production, 24-29 August 2025, Innsbruck, Austria)

Christodoulou, C. ORCID: https://orcid.org/0000-0001-9465-3886, Jalal, H., Crompton, L., Kliem, K. ORCID: https://orcid.org/0000-0002-0058-8225, Davison, N., Smith, L. ORCID: https://orcid.org/0000-0002-9898-9288, Humphries, D., Fusaro, I. and Stergiadis, S. ORCID: https://orcid.org/0000-0002-7293-182X (2025) In vitro effects of bakery by-products on rumen degradation, fermentation, and methane yield. In: 76th Annual Meeting of the European Association of Animal Production, 24-29 August 2025, Innsbruck, Austria., p. 324. (Book of Abstracts of the 76th Annual Meeting of the European Association of Animal Production, 24-29 August 2025, Innsbruck, Austria)

Christodoulou, C. ORCID: https://orcid.org/0000-0001-9465-3886, Kliem, K. ORCID: https://orcid.org/0000-0002-0058-8225, Auffret, M.D., Humphries, D., Newbold, J., Davison, N., Kirton, P. ORCID: https://orcid.org/0009-0001-1941-003X, Smith, L. ORCID: https://orcid.org/0000-0002-9898-9288 and Stergiadis, S. ORCID: https://orcid.org/0000-0002-7293-182X (2024) Methane emissions from beef fed different protein sources and a forage-based diet. In: 75th Annual Meeting of the European Association of Animal Production, 1-5 September 2024, Florence, Italy.

Christodoulou, C. ORCID: https://orcid.org/0000-0001-9465-3886, Kliem, K. ORCID: https://orcid.org/0000-0002-0058-8225, Auffret, M., Humphries, D., Newbold, J., Davison, N., Smith, L. ORCID: https://orcid.org/0000-0002-9898-9288 and Stergiadis, S. ORCID: https://orcid.org/0000-0002-7293-182X (2024) Nitrogen use efficiency from beef fed different protein sources and a forage-based diet. In: 75th Annual Meeting of the European Association of Animal Production, 1-5 September 2024, Florence, Italy.

Davison, N., Christodoulou, C. ORCID: https://orcid.org/0000-0001-9465-3886, Humphries, D., Kliem, K. ORCID: https://orcid.org/0000-0002-0058-8225, Stergiadis, S. ORCID: https://orcid.org/0000-0002-7293-182X and Smith, L. ORCID: https://orcid.org/0000-0002-9898-9288 (2024) Comparing opportunities for utilizing brewers' grains for animal feed and anaerobic digestion. In: Proceedings of the 5th Global Food Security Conference – Towards equitable, sustainable and resilient food systems, 9-12 April 2024, Leuven, Belgium. (O1B.04)

Christodoulou, C. ORCID: https://orcid.org/0000-0001-9465-3886, Kliem, K. ORCID: https://orcid.org/0000-0002-0058-8225, Auffret, M., Humphries, D., Newbold, J., Davison, N., Crompton, L., Dhanoa, M., Smith, L. ORCID: https://orcid.org/0000-0002-9898-9288 and Stergiadis, S. ORCID: https://orcid.org/0000-0002-7293-182X (2024) In vitro fermentation characteristics of four agro-industrial protein by-products compared to soyabean meal. In: British Society of Animal Science Annual Conference, 8-11 April 2024, Belfast, UK, pp. 95-96. doi: 10.1016/j.anscip.2024.02.087 (Animal - science proceedings)

Ragkos, A., Koutouzidou, G., Christodoulou, C. ORCID: https://orcid.org/0000-0001-9465-3886 and Batzios, A. (2017) Which orientation for strategies and policies for local animal breeds? The role of ICT and novel technologies. In: 8th International Conference on Information and Communication Technologies in Agriculture, Food and Environment (HAICTA 2017), 21-24 Sep 2017, Chania, Greece, pp. 749-758.