Effect of Zinc Oxide Nanoparticles in Drinking Water on Growth Rate, Biochemical Parameters, and Intestinal Histology of Broilers

Table 5

Effect of zinc oxide nanoparticles (ZnO NPs) on liver enzyme activity at 35 days of age.

Items	Groups					p value
	Control NDW	NDW with 60 ppm/L	NDW with 80 ppm/L	NDW with 100 ppm/L	NDW with 120 ppm/L
		ZnO NP	ZnO NP	ZnO NP	ZnO NP
ALT (UI)	46.31^a	39.29^b	32.86^c	38.00^b	40.06^b	0.007
AST (UI)	162.39^a	155.68^b	146.77^b	156.05^b	135.48^c	0.005

^a,b,cMeans in the same column differ significantly (). NDW: normal drinking water.