. 2021 Jun 5;7(6):e07237. doi: 10.1016/j.heliyon.2021.e07237

Table 12.

Growth performance, retention of Ca and P, phytate-P degradation in excreta and bone parameters of broilers supplemented with phytase HM.

Items	Phytase HM treatments, FYT/kg feed								SEM	P-value	Linear	Quadratic
Items	NC	187.5	375	750	1125	1500	1875	2250
Body weight, g
D 8	193	192	192	192	192	192	192	193	0.3	0.08	0.68	0.11
D 17	652^a	687^b	691^b	710 ^bc	716 ^bc	710 ^bc	724^c	716 ^bc	7.3	<0.01	<0.01	<0.01
D8 to 17
WG, g	460^a	495^b	499^b	518 ^bc	524 ^bc	518 ^bc	532^c	523 ^bc	7.3	<0.01	<0.01	<0.01
FI, g	572^a	600 ^ab	609 ^ab	618^b	621^b	608 ^ab	640^b	622^b	10.0	<0.01	<0.01	0.05
FCR, g/g	1.244	1.215	1.220	1.195	1.187	1.174	1.205	1.190	0.017	0.10	0.01	0.06
Excreta
Ca retention, %	55.08^a	63.00^b	66.03^b	73.14^c	74.64^c	75.70^c	73.43^c	73.19^c	0.84	<0.01	<0.01	<0.01
P retention, %	64.41^a	71.46^b	75.63^c	80.52^d	82.48^d	83.31^d	81.95^d	81.87^d	0.65	<0.01	<0.01	<0.01
Phytate-P degradation, %	64.01^a	77.03^b	82.99^c	89.17^d	92.88 ^de	94.38^e	91.86 ^de	94.56^e	0.97	<0.01	<0.01	<0.01
Bone
Ash, %	46.80^a	50.14^b	51.22 ^bc	52.36 ^cd	52.93 ^cde	53.56 ^de	54.67^e	53.74 ^de	0.46	<0.01	<0.01	<0.01
Ca, %	17.10^a	18.26^b	18.57 ^bc	19.07 ^bcd	19.22 ^cd	19.38 ^cd	19.96^d	19.38 ^cd	0.20	<0.01	<0.01	<0.01
P, %	8.05^a	8.61^b	8.91 ^bc	9.22 ^cd	9.38 ^de	9.44 ^de	9.67^e	9.39 ^de	0.09	<0.01	<0.01	<0.01

Means with different superscript within the same row differ significantly (P < 0.05).

∗ Phytate-P consisted of the P bound by phytate (and its degradation products).

The negative control (NC) was deficient in phosphorus (P). The phytase HM treatments were NC supplemented with phytase HM at the indicated FYT/kg feed.

SEM: standard error of mean; WG: weight gain; FI: feed intake; FCR: feed conversion ratio; Ca: calcium.