Soya saponin improves egg-laying performance and immune function of laying hens

Table 3 Organs weight index

Time	Items	Control	50 ppm SS	500 ppm SS	P-value
5th week(27 weeks old, n = 6)	Liver, %	2.75 ± 0.44^b	2.25 ± 0.44^b	2.12 ± 0.20^a	0.029
	Spleen, %	0.13 ± 0.02	0.12 ± 0.01	0.12 ± 0.02	0.482
	Ovaries, %	2.69 ± 0.43	2.90 ± 0.51	2.78 ± 0.63	0.791
	Oviducts, %	2.41 ± 1.28	3.43 ± 0.31	2.90 ± 0.97	0.208
10th week(32 weeks old, n = 8)	Liver, %	2.40 ± 0.42	2.25 ± 0.22	2.22 ± 0.52	0.625
	Spleen, %	0.09 ± 0.02	0.10 ± 0.01	0.09 ± 0.01	0.176
	Ovaries, %	2.39 ± 0.69^a	3.20 ± 0.64^b	2.20 ± 0.67^a	0.017
	Oviducts, %	2.47 ± 0.44	3.19 ± 0.48	2.99 ± 1.13	0.169

At the end of the 5th and 10th week of the trial, 6–8 birds from each treatment were selected for slaughter to obtain liver, spleen, oviducts, and ovaries. The calculation formula for the weight index of these tissues is as follows: the organ weight, g / live weight of birds, g × 100%. The data in Table 3 different superscript letters indicate significant difference (P < 0.05); same superscript letters indicate no difference (P > 0.1), the same below

ISSN: 2049-1891