. 2020 Dec 24;100(3):100962. doi: 10.1016/j.psj.2020.12.059

Table 7.

Effect of total replacement of inorganic P by PhyG with/without xylanase, on growth performance of broilers fed high phytate (>0.3% phytate P), Ca-reduced diets; trial 2 (males only).

	PC	IPF1	IPF2	IPF3	IPF4	SEM	P-value¹
Starter, day 0–10
Day 10 BW, g/bird	263.6	265.7	257.7	269.1	268.9	3.33	0.114
ADG, g/bird	22.57^a,b	23.49^a,b	21.94^b	23.16^a,b	23.75^a	0.408	0.023
ADFI, g/bird	26.73	27.72	26.69	27.37	27.71	0.386	0.172
FCR, g:g	1.187	1.181	1.218	1.183	1.167	0.013	0.097
Grower, day 10–21
ADG, g/bird	60.57^c	63.88^b	63.59^b	66.28^a	65.15^a,b	0.571	<0.001
ADFI, g/bird	88.67	88.74	88.92	90.75	90.40	0.804	0.213
FCR, g:g	1.465^a	1.390^b	1.399^b	1.370^b	1.388^b	0.014	<0.001
Starter-grower, day 0–21
Day 21 BW, g/bird	930.5^c	973.8^a,b	962.8^b,c	999.0^a	989.2^a,b	8.03	<0.001
ADG, g/bird	42.03^b	43.49^a,b	43.15^b	45.05^a	43.57^a,b	0.384	<0.001
ADFI, g/bird	58.59	58.21	58.49	59.68	58.11	0.542	0.274
FCR, g:g	1.394^a	1.339^b	1.356^a,b	1.325^b	1.334^b	0.010	<0.001
Finisher 1, day 21–35
ADG, g/bird	94.61	95.68	97.07	94.29	97.26	1.165	0.259
ADFI, g/bird	156.2^b	160.0^a,b	164.9^a	157.8^b	161.7^a,b	1.70	0.008
FCR, g:g	1.652	1.674	1.700	1.675	1.662	0.017	0.375
Starter-grower-finisher 1, day 0–35
Day 35 BW, g/bird	2,259^b	2,333^a	2,324^a,b	2,338^a	2,353^a	16.8	0.003
ADG, g/bird	56.96	57.51	57.71	58.13	57.15	0.582	0.644
ADFI, g/bird	87.54	87.39	89.17	87.82	86.41	0.909	0.327
FCR, g:g	1.537	1.520	1.545	1.511	1.512	0.011	0.106
FCRc, g:g²	1.537	1.498	1.526	1.488	1.484	0.014	0.027
Day 35 BW, % breeders' performance objective³	98.9	102.2	101.8	102.4	103.1
Day 35 FCR, % breeders' performance objective³	100.0	101.1	99.5	101.7	101.6
Finisher 2, day 35–42
ADG, g/bird	103.4^b	117.5^a	108.9^a,b	113.5^a,b	112.2^a,b	3.25	0.032
ADFI, g/bird	229.85	236.34	237.20	229.75	236.29	2.785	0.148
FCR, g:g	2.242^a	2.016^b	2.185^a,b	2.033^b	2.122^a,b	0.051	0.015
Overall, day 0–42
Day 42 BW, g/bird	2,994^b	3,159^a	3,090^a,b	3,140^a	3,138^a	30.0	0.002
ADG, g/bird	66.85^b	69.57^a	68.96^a,b	69.80^a	69.53^a	0.648	0.015
ADFI, g/bird	113.3	114.1	116.8	114.0	114.9	0.90	0.091
FCR, g:g	1.696^a	1.641^b,c	1.694^a,b	1.634^c	1.654^a,b,c	0.013	<0.001
FCRc², g:g	1.696^a	1.590^b,c	1.665^a,b	1.590^c	1.611^b,c	0.018	<0.001
Day 42 BW, % breeders' performance objective³	99.0	104.5	102.2	103.9	103.8
Day 42 FCR, % breeders' performance objective³	98.4	101.7	98.6	102.2	101.0
Feed cost, USD/kg BWG	0.490	0.461	0.458	0.462	0.461

^a-cMeans in the same row with no common superscripts are significantly different at a probability level of P < 0.05.

All parameters are corrected for mortality.

Abbreviation: IPF, inorganic-P-free.

Displayed P values < 0.05 without superscripts next to associated means indicates a statistically significant ANOVA result but nonsignificance from means separation using Tukey's honest significant difference test, at P < 0.05.

FCRc: body weight–corrected FCR, calculated by correction of FCR values by 3 points per 100g of BW difference from the PC.

Breeder's objective: Ross 308/Ross 308 FF broiler: performance objectives; Aviagen, 2014b.