Articles | Volume 65, issue 1
https://doi.org/10.5194/aab-65-79-2022
https://doi.org/10.5194/aab-65-79-2022
Original study
 | 
22 Feb 2022
Original study |  | 22 Feb 2022

In vitro study on the effects of exogenic fibrolytic enzymes produced from Trichoderma longibrachiatum on ruminal degradation of olive mill waste

Khalil Abid, Jihene Jabri, Hela Yaich, Atef Malek, Jamel Rekhis, and Mohamed Kamoun

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Cited articles

Abbeddou, S., Rischkowsky, B., Richter, E., Hess, H., and Kreuzer, M.: Modification of milk fatty acid composition by feeding forages and agro-industrial byproducts from dry areas to Awassi sheep, J. Dairy Sci., 94, 4657–4668, https://doi.org/10.3168/jds.2011-4154, 2011. 
Abid, K., Jabri, J., Beckers, Y., Yaich, H., Malek, A., Rekhis, J., and Kamoun, M.: Effects of exogenous fibrolytic enzymes on the ruminal fermentation of agro-industrial by-products, S. Afr. J. Anim. Sci., 49, 612–618, https://doi.org/10.4314/sajas.v49i4.2, 2019a. 
Abid, K., Jabri, J., Beckers, Y., Yaich, H., Malek, A., Rekhis, J., and Kamoun, M.: Influence of adding fibrolytic enzymes on the ruminal fermentation of date palm by-products, Arch. Anim. Breed., 62, 1–8, https://doi.org/10.5194/aab-62-1-2019, 2019b. 
Abid, K., Jabri, J., Ammar, H., Ben Said, S., Yaich, H., Malek, A., Rekhis, J., Lopez, S., and Kamoun, M.: Effect of treating olive cake with fibrolytic enzymes on feed intake, digestibility and performance in growing lambs, Anim. Feed Sci. Tech., 261, 114405, https://doi.org/10.1016/j.anifeedsci.2020.114405, 2020. 
Álvarez-Rodríguez, J., Muñoz, F., and Margalida, J.: Nutritive value of crude and extracted two-stage olive cakes produced in Aragón (Spain), Rev. Electron. de Vet., 10, 1–8, 2009. 
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Short summary
This research was conducted to valorize crude olive cake, extracted olive cake, and olive leaves using an exogenous fibrolytic enzyme in ruminal nutrition. This additive improved only the nutritional value of crude olive cake and olive leaves. These results can encourage breeders to use this waste as feed at a low cost in animal nutrition. This valorization of waste is a good solution to reduce pollution.