Table 1.

Influence of PNS on body weight (g). The results are expressed as the mean ± SD

Group	Before PNS	PNS week 2	PNS week 4	PNS week 6
C57	20.23 ± 1.8	22.45 ± 1.13	22.49 ± 1.07	24.06 ± 1.39
KK	32.25 ± 5.28**	33.45 ± 3.7**	37.19 ± 4.03**	37.53 ± 4.54**
PNS	32.49 ± 1.77**	38.31 ± 3.13**	38.65 ± 3.8**	41.1 ± 4.28**

**P < 0.01 compared to the C57 group at corresponding recording time (Tukey's test, n = 8).