Use of zinc oxide nanoparticles in the growing rabbit diets to mitigate hot environmental conditions for sustainable production and improved meat quality

Table 1 Effects of ZnO-NPs on growth performance of male rabbits

Items	ZnO-NPs levels mg/kg					SEM	P-value
Items	0	20	40	60	80	SEM	Lin	Quad
Bodyweight, g
30 days	628	625	631	624	623	11	0.158	0.333
60 days	1225^b	1281^a	1289^a	1308^a	1292^a	23	0.005	0.042
90 days	2030^b	2119^a	2145^a	2186^a	2158^a	22	0.010	0.033
Daily weight gain, g
30–60 days	19.90^b	21.87^a	21.93^a	22.80^a	22.30^a	1.06	0.008	0.012
60–90 days	26.83^b	27.93^a	28.53^a	29.27a	28.87^a	1.01	0.001	0.015
30–90 days	23.37^b	24.90^a	25.23^a	26.03^a	25.58^a	0.91	0.003	0.018
Daily feed intake, g
30–60 days	81.37	83.94	84.63	84.67	83.67	3.51	0.612	0.66
60–90 days	97.92	96.40	97.10	98.70	97.70	3.83	0.174	0.547
30–90 days	89.65	90.17	90.87	91.69	90.69	2.72	0.124	0.244
Daily feed conversion ratio
30–60 days	4.089^b	3.839^a	3.859^a	3.714^a	3.752^a	0.08	0.004	0.022
60–90 days	3.649^b	3.451^a	3.403^a	3.372^a	3.385^a	0.04	0.002	0.017
30–90 days	3.836^b	3.621^a	3.601^a	3.522^a	3.545^a	0.03	0.001	0.019

^a-c Means (n = 25) not sharing a common superscript in a row are significantly different (P < 0.05). SEM standard error of means, Lin and Quad linear and quadratic responses, respectively, to supplementation levels ZnO-NPs

ISSN: 1746-6148