Blummel, M., Makkar, H.P.S. and Becker, K. 1997a. In vitro gas production: a technique revisited. J. Anim. Physiol. Anim. Nutr., 77: 24-34.

Blummel, M., Makkar, H.P.S., Chisanga, G., Mtimuni, J. and Becker, K.1997b. The production of dry matter intake of temperature and tropical roughages from in vitro digestibility/gas production of African roughage in relation to ruminant live weight gain. Anim. Feed. Sci. Technol., 69: 131-141.

Faixová, Z., Piesova, E. Makova, Z. Cobanova, K. and Faix, S. 2016. Effect of dietary supplementation with seleniumenriched yeast or sodium selenite on ruminal enzyme activities and blood chemistry in sheep. Acta Veterinaria Brno., 85(2): 185-194.

Gangadoo, S., Stanley, D. Hughes, R. Moore, R.J. and Chapman, J. 2017. The synthesis and characterisation of highly stable and reproducible selenium nanoparticles. Inorg. Nano-Met. Chem., 47(11): 1568–1576.

Hashem, A.H., Khalil, A.M.A. Reyad, A.M. and Salem, S.S. 2021. Biomedical applications of mycosynthesized selenium nanoparticles using penicillium expansum ATTC 36200. Biol. Trace Elem. Res., 1: 11.

Ibrahim, E.M. and Mohamed, M.Y. 2018. Effect of different dietary selenium sources supplementation on nutrient digestibility, productive performance and some serum biochemical indices in sheep. Egyptian Journal of Nutrition and Feeds, 21(1): 53-64.

Kargar Razi, M., Sarraf Maamoury, R. and Banihashemi, S. 2011. Preparation of nano selenium particles by water solution phase method from industrial dust. Int. J. Nanodimens., 1(4): 261-267.

Mehdi, Y. and Dufrasne, I. 2016. Selenium in cattle: A review. Molecules, 21: 545.

Menke, H., Raab, L. Salewski, A. Steigass, H. Fritz, D. and Schneider, W. 1979. The estimation of digestibility and metabolizable energy content of ruminant feeding stuffs from the gas production when there are incubated with rumen liquor in vitro. J. Agric. Sci., 93: 217-222.

Mosmann, T. 1983. Rapid calorimetric assay for cellular growth and survival: Application to proliferation and cytotoxicity assays. J. Immuno Methods., 65: 55-63.

NRC. 2007. Nutrient Requirements of Dairy Cattle. 9th Ed. National Academy Press, Washington, DC, USA.

Panev, A., Hauptmanova, K. Pavlata, L. Pechova, A. Filípek, J. and Dvorak, R. 2013. Effect of supplementation of various selenium forms and doses on selected parameters of ruminal fluid and blood in sheep. Czech J. Anim. Sci., 58: 37-46.

Qian, Li, Chen, T. and Yang, F. 2010. Facile and controllable one step fabrication of selenium nano particles assisted by L- cysteine. Mater. Lett., 64: 614 -617.

Salem, S.S., Fouda, M.M. Fouda, A. Awad, M.A. Al-Olayan, E.M. Allam, A.A. and Shaheen, T.I. 2020. Antibacterial, cytotoxicity and larvicidal activity of green synthesized selenium nanoparticles using Penicillium corylophilum. J. Cluster Sci., 1: 11.

Salem, S.S., Fouda, M.M. Fouda, A. Awad, M.A. Al-Olayan, E.M. Allam, A.A. and Shaheen, T.I. 2020. Antibacterial, cytotoxicity and larvicidal activity of green synthesized selenium nanoparticles using Penicillium corylophilum. J. Cluster Sci., 1: 11.

Shahid, A.B., Malhi, M., Soomro, S.A., Shah, M.G., Kalhoro, N.H., Kaka, A., Mal, R., Soomro, M.A., Samo S.P. and Sanjrani, M.N. 2020. Influence of Dietary Selenium Yeast Supplementation on Fermentation Pattern, Papillae Morphology and Antioxidant Status in Rumen of Goat. Pak. J. Zool., 52(2): 565.

Shi, L., Xun, W., Yue, W., Zhang, C., Ren, Y., Liu, Q., Wang, Q. and Shi, L. 2011. Effect of elemental nano-selenium on feed digestibility, rumen fermentation, and purine derivatives in sheep. Anim. Feed Sci. Tech., 163: 136-142.

Snedecor, G.W. and Cochran, W.C. 1989. Statistical Methods, 8th edn., Iowa State University Press, Ames, Iowa.

Van Ryssen, J.B. and Schroeder, G.E. 2003. Effect of heat processing of protein sources on the disappearance of their selenium from mobile bag in the digestive tract of dairy cows. Anim. Feed Sci. Technol., 107: 15-27.

Zhang, W., Zhang, J., Ding, D., Zhang, L., Muehlmann, L.A., Deng, S.E., Wang, X. and Li, W. 2017. Synthesis and antioxidant properties of Lycium barbarum polysaccharides capped selenium nanoparticles using tea extract. Artificial Cells, Nanomed. Biotechnol., 46(7): 1463-1470.