Effect of the dietary supplementation with extracts of chestnut wood and grape pomace on performance and jejunum response in female and male broiler chickens at different ages

Table 2 Growth performance¹ (LS means) and mortality of broiler chickens until slaughter

	Diet (D)			Sex (S)			P value		MSE
Items	C	CN	GP	Females	Males	D	S	D×S
Chickens, n	258	252	255	383	382
Pens, n	12	12	12	18	18
Live weight, g
Initial (1 d)	44.3	43.9	44.5	43.7	44.9	0.15	<0.001	0.16	3.45
15 d	512	510	518	498	529	0.23	<0.001	0.12	50.7
29 d	1689^ab	1669^a	1703^b	1559	1815	<0.01	<0.001	0.12	124
Final (44 d)²	3099^a	3087^a	3146^b	2816	3406	<0.01	<0.001	0.02	217
Whole trial (1-44 d)
Daily weight gain², g/d	69.4^a	69.1^a	70.5^b	63.0	76.4	<0.01	<0.001	0.02	4.94
Daily feed intake, g/d	111	110	112	102	119	0.16	<0.001	0.70	2.47
Feed conversion	1.59	1.59	1.59	1.59	1.59	0.85	0.91	0.26	0.36
Losses³, %	2.27	4.55	3.41	3.28	3.54	0.33	0.70	0.70	-

MSE root mean square error. C, control diet. CN, control diet supplemented with 0.2% chestnut wood extracts. GP, control diet supplemented with 0.2% grape pomace extracts
¹Individual data: live weight and daily growth rate. Pen data: feed intake and feed conversion
²Interaction Diet × Sex, Final live weight: P = 0.02: 2827 g, 2789 g and 2822 g in females fed C, CN and GP diets; 3372 g, 3381 g and 3473 g in males fed C, CN, and GP diets, respectively. Daily weight gain: P = 0.02: 63.2 g/d, 62.4 g/d and 63.1 g/d in females fed C, CN, and GP diets, 75.6 g/d, 75.8 g/d and 77.9 g/d in males fed C, CN, GP diets, respectively.
³Dead and lame chickens
^a,bValues with different superscript letters significantly differ (P < 0.05)

ISSN: 2049-1891