Effects of long-chain fatty acid supplementation on the growth performance of grower and finisher pigs: a meta-analysis

Li, Zhi; Xu, Bocheng; Lu, Zeqing; Wang, Yizhen

doi:10.1186/s40104-019-0374-1

Journal of Animal Science and Biotechnology

Table 2 Characteristics of the included studies

From: Effects of long-chain fatty acid supplementation on the growth performance of grower and finisher pigs: a meta-analysis

Study	Year	Genetic background	N ^a	Initial BW^b, kg	Final BW^b, kg	Initial phase	Supplemental substance^c	Energy difference^d	Basal diet	Concentration	Saturation	ADG, g/d^e		ADFI, g/d^e		G:F ratio^e
Study	Year	Genetic background	N ^a	Initial BW^b, kg	Final BW^b, kg	Initial phase	Supplemental substance^c	Energy difference^d	Basal diet	Concentration	Saturation	T	CT	T	CT	T	CT
Engel et al. [18]	2001	PIC L326 boars × C15 sows	36	60	110	Finisher	Choice white grease	→	Corn-soybean	High (4%)	Unsaturated	980	920	3140	3130	0.3	0.31
				60	110	Finisher	Poultry fat	→	Corn-soybean	High (4%)	Unsaturated	930	920	3140	3130	0.31	0.31
Thiel-Cooper et al. [19]	2001	Yorkshire × Landrace × Duroc × Hampshire	16	26.3	116	Grower	Conjugated linoleic acid	N.A.	Corn-soybean	Low (1%)	Unsaturated	1019^*	942	2634	2683	0.384^*	0.352
Sun et al. [20]	2004	Duroc × Landrace × Yorkshire	36	63.8	98.9	Finisher	Conjugated linoleic acid	→	Corn-soybean	High (4%)	Unsaturated	890^**	780	2700^**	2510	0.328^**	0.312
Benz et al. [21]	2007	TR4 × 1050	40	54.39	122.47	Finisher	Choice white grease	↑	Corn-soybean	High (5%)	Unsaturated	994.26	921.62	2651.36	2596.88	0.374	0.356
Apple et al. [22]	2008	Mating of line 348 sows to EB boars	108	77.9	108.9	Finisher	Beef tallow	↑	Corn-soybean	High (5%)	Saturated	810	780	2060	2030	0.4	0.39
Eastwood et al. [23]	2009	Camborough Plus sows × C337 boars	100	32	115	Grower	Flaxseed meal	↑	Corn-soybean	High (5%)	Unsaturated	937	948	2648	2657	0.36	0.36
Jaturasitha et al. [24]	2009	Duroc × Yorkshire × Landrace	300	35	90	Grower	Tuna oil	↑	Corn-soybean	Low (1%)	Unsaturated	707	645	2000	1990	0.354	0.324
Juarez et al. [25]	2010	Commercial pigs	16	31	84	Grower	Co-extruded flaxseed	↑	Corn-soybean	High (5%)	Unsaturated	1000	940	2600^*	2460	0.39^*	0.38
Benz et al. [26]	2011	327 × PIC C22	48	44	123	Finisher	Choice white grease	↑	Corn-soybean	High (5%)	Unsaturated	1040	990	2960	3150	0.38^**	0.35
				44	123	Finisher	Soybean oil	↑	Corn-soybean	High (5%)	Unsaturated	1070^**	990	3110	3150	0.39^**	0.35
Rickard et al. [27]	2012	PIC 337	24	100.68	136	Finisher	Conjugated linoleic acid	↓	DDGS	Low (0.6%)	Unsaturated	1280	1240	3390	3370	0.17^**	0.17
Lee et al. [28]	2013	Landrace × Yorkshire × Duroc	36	43.7	128.9	Finisher	Beef tallow	↑	DDGS	High (3%)	Saturated	980	950	2700	2670	0.37	0.36
				43.7	128.9	Finisher	Palm kernel oil	↑	DDGS	High (3%)	Saturated	980	950	2540	2670	0.39	0.36
Wang et al. [29]	2015	Duroc × Landrace × Large	16	60	94.2	Finisher	Conjugated linoleic acid	↑	DDGS	Low (1%)	Unsaturated	850	840	2670	2630	0.32	0.32
Stephenson et al. [30]	2016	PIC 327 × 1050	48	45.6	132.17	Grower	Beef tallow	↑	Corn-soybean	High (4%)	Saturated	1034	1002	2706	2756	0.384^*	0.365
				45.6	132.17	Grower	Soybean oil	↑	Corn-soybean	High (4%)	Unsaturated	1056	1002	2760	2756	0.385	0.365
Upadhaya et al. [31]	2017	Yorkshire × Landrace × Duroc	60	80.82	110.3	Finisher	Conjugated linoleic acid	→	Corn-soybean	Low (1%)	Unsaturated	839	846	2593	2614	0.323	0.324
Villela et al. [32]	2017	Duroc × Yorkshire × Landrace	143	55	90	Finisher	Cotton seed oil	↑	DDGS	High (5%)	Unsaturated	1020	970	2560^*	2810	0.4^*	0.34
				90	120	Finisher	Cotton seed oil	↑	DDGS	High (5%)	Unsaturated	920	870	2810^*	3050	0.33^*	0.28
De Tonnac et al. [33]	2017	Yorkshire × Landrace × Pietrain	23	50.7	115.21	Finisher	DHA-rich algae	↑	Corn-soybean	High (4.1%)	Unsaturated	1070	1070	3300	3300	0.357	0.345
Liu et al. [34]	2018	C22 sows × PIC L337 boars	120	73	129.94	Finisher	Soybean oil	↑	Corn-soybean	High (6%)	Unsaturated	1170	1155	3221^*	3654	0.36^*	0.322
				73	129.94	Finisher	Choice white grease	↑	Corn-soybean	High (6%)	Unsaturated	1226	1155	3355^*	3654	0.367^*	0.322
				73	129.94	Finisher	Palm oil	↑	Corn-soybean	High (6%)	Saturated	1259	1155	3559	3654	0.357^*	0.322
				73	129.94	Finisher	Beef tallow	↑	Corn-soybean	High (6%)	Saturated	1222	1155	3399^*	3654	0.362^*	0.322
Moran et al. [35]	2018	PIC × Goland	144	117.1	140.75	Finisher	DHA-rich microalgae	↑	Corn-soybean	Low (1%)	Unsaturated	847.7	838.3	3392	3405	0.25	0.244

^aNumber of pigs included in our analyses
^bBW body weight
^cDHA docosahexaenoic acid
^d↑, higher energy density in treatment group; →, similar energy density in treatment and control groups; ↓, lower energy density in treatment group; N.A not applicable
^eT treatment, CT control; a significant difference in the trial is indicated by ^*P < 0.05 and ^**P < 0.01

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ISSN: 2049-1891

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