. 2022 May 9;100(6):skac167. doi: 10.1093/jas/skac167

Table 6.

Effects of dietary fat source and essential fatty acid intake on litter performance¹

Trait	Control	CWG	SO	Combination	SEM	P=
Sows, n	850	865	874	862	—	—
Litter size, n
Start²	12.5	12.5	12.4	12.4	0.12	0.996
Wean	11.2	11.2	11.2	11.2	0.11	0.995
Litter weight, kg
Total born	20.4	20.3	20.3	20.5	0.17	0.677
Born alive	18.7	18.5	18.5	18.5	0.16	0.881
Start²	17.7	17.7	17.7	17.6	0.13	0.528
Wean	75.5^b	76.5^ab	77.1^a	77.3^a	0.62	0.028
Litter gain, kg³	57.8^b	58.7^ab	59.4^a	59.7^a	0.56	0.006
Litter ADG, kg⁴	2.46^b	2.51^ab	2.54^a	2.55^a	0.020	0.003
Piglet bodyweight, kg
Total born	1.34	1.33	1.33	1.33	0.009	0.606
Born alive	1.38	1.37	1.37	1.37	0.009	0.689
Start²	1.42	1.42	1.43	1.42	0.008	0.620
Wean	6.72^b	6.79^b	6.88^a	6.90^a	0.045	<0.001
Piglet ADG, kg⁵	0.218^c	0.222^b	0.225^a	0.227^a	0.0016	<0.001

Means within row with different superscripts differ (P < 0.05).

A total of 3,451 sows and their litters were used over 28-d experimental periods with 850 to 874 sows per treatment. Experimental treatments contained supplemental fat at 0.5% (Control), 3% (CWG or SO), or 5% (Combination).

Start litter size represents litter size within 24 h of farrowing after cross-fostering within treatment.

Litter gain, litter weight at wean − litter weight at start.

Litter ADG, litter gain ÷ lactation length.

Piglet ADG, litter ADG ÷ count of pigs at wean.