Table 5.

Growth performance of broiler chickens (22 to 37d) according to different fat sources in the diet.¹

	Dietary treatments2								Fat3		FFA%4					P values
	Unsaturated – S diets				Saturated – P diets
Item	S5	S15	S35	S50	P5	P15	P35	P50	S	P	5	15	35	50	SEM	Fat	FFA	Interaction
ADG, g/b/d	85.3	90.9	87.4	90.4	86.1	90.4	88.5	85.5	88.5	87.6	85.7	90.7	88.0	87.9	0.622	NS	NS	NS
ADFI, g/b/d	142.2	149.0	148.2	146.8	146.8	151.0	148.9	149.0	146.9	148.9	144.5	149.9	148.5	147.9	0.985	NS	NS	NS
FCR, g/g	1.67	1.67	1.70	1.63	1.73	1.69	1.71	1.74	1.66	1.72	1.70	1.68	1.70	1.68	0.008	**	NS	NS
BW at 37 d, g	2,181	2,337	2,190	2,290	2,156	2,280	2,194	2,172	2,256	2,193	2,152b	2,309a	2,192b	2,244ab	11.994	**	**	NS
AME intake, kcal/b/d	429.4	448.7	440.7	410.2	435.9	435.8	410.5	430.8	431.3	426.5	432.2	442.9	424.5	420.6	21.530	NS	NS	NS

Abbreviations: ADG, average daily gain; ADFI, average daily feed intake; BW, body weight; FCR, feed conversion ratio.

P-values were obtained from the univariate GLM procedure of SPSS conducted to study whether the dietary treatments, the dietary fat saturation degree and the dietary FFA percentage affected the growth performance values.

*P < 0.05; **P < 0.01; ***P < 0.001.

^a-bmeans in a row not sharing a common superscript letter are significantly different (P < 0.05).

¹Diets supplemented with 6% of an unsaturated (S) or saturated fat source (P): S5 - 100% crude soybean oil, S15 - oil blend with 70% crude soybean oil and 30% acid soybean oil from chemical refining (SA), S35 - oil blend with 30% crude soybean oil and 70% SA, S50 - 100% SA, P5 - 100% crude palm oil, P15 - oil blend with 80% crude palm oil and 20% palm fatty acid distillate from physical refining (PA), S35 - oil blend with 53% crude palm oil and 47% PA, S50 - oil blend with 33% crude palm oil and 66% PA.

²Values are means of 6 cages with 3 chickens/cage.

³Values are means of 24 cages with 3 chickens/cage.

⁴Values are means of 12 cages with 3 chickens/cage.