1. Liao JJ, Shen XY, Huo B, Xiong KN (2018) Effect of nitrogenous fertilizer on the antioxidant systems of grassland species in the Karst mountains. Acta Pratacult Sin 27(1):169–176
2. Xia YB, Han Y, Chen SC, Wu X (2019) Effects of dietary protein concentration on production performance and rumen fermentation of Guizhou black goats aged 45-105 days. J Grassl Forage Sci 06:71–79
3. Shen XY, Du GZ, Chen YM, Fan BL (2006) Copper deficiency in yaks on pasture in western China. Can Vet J 47:902–906
4. Huo B, Wu T, Xiao H, Shen XY (2019) Effect of copper contaminated pasture on mineral metabolism in the Wumeng semi-fine wool sheep. Asian J Ecotoxicol 14(6):224–232
5. Jaleh B, Fakhri P, Noroozi M (2012) Influence of copper nanoparticles concentration on the properties of poly(vinylidene fluoride)/cu nanoparticles nanocomposite films. J Inorg Organomet P Mat 22(4):878–885