. 2020 Sep 15;99(12):6797–6808. doi: 10.1016/j.psj.2020.08.064

Table 5.

Activity of total phosphatase, alkaline phosphatase, and phytase in the jejunum of laying hens in different weeks of life.

Period	Strain	Total phosphatase activity	ALP activity	Phytase activity
Period	Strain	μg P_i/mg BBM protein/min	μg P_i/mg BBM protein/min	μg P_i/mg BBM protein/min
Week 24	LB¹	1.05^w	1.42^v	3.11^v
	LSL²	1.00^w	1.34^v	2.81^v
Week 30	LB	1.12^w	1.10^w	2.59^w
	LSL	0.97^w	1.13^w	2.28^w
Week 60	LB	1.35^v	1.48^v	3.56^v
	LSL	1.13^v	1.32^v	2.78^v
	Pooled SEM	0.064	0.098	0.183
P values	Strain	0.009	0.378	0.003
	Period^v,w	0.003	0.010	0.001
	Strain × period	0.386	0.645	0.305

^v,wDifferent superscript lowercase letters within a column indicate significant main effects of the periods (P < 0.05), irrespective of the strains.

When the main effect of strain was significant, LB hens differed significantly from LSL hens (P < 0.05).

Data are given as LSmeans; n = 8 to 10 hens.

Abbreviation: ALP, alkaline phosphatase.

LB = Lohmann Brown-classic.

LSL = Lohmann LSL-classic.