A systematic review and meta-analysis of dietary fat effects on reproductive performance of sows and growth performance of piglets

Table 3 Overall effects of adding fat to sow diets on performance of sows and piglets¹

Criterion	Source²	SMD³	95%-CI⁴	P-value⁵
ADFI, kg/d	Fig.1A	-0.14	-0.27; -0.01	0.04
ADEI, Mcal/d	Fig.2A	0.11	-0.03; 0.26	0.11
Litter weight (birth), kg	Fig.3A	0.09	-0.13; 0.30	0.40
Litter weight (weaning), kg	Fig.3B	-0.14	-0.51; 0.24	0.46
Litter size (birth)	Fig.4A	0.45	-0.03; 0.92	0.07
Liveborn litter size	Fig.5A	0.01	-0.11; 0.13	0.90
Litter-ADG, kg/d	Fig.6A	0.12	-0.21; 0.45	0.47
Weaning survival rate, %	Fig.7A	0.21	-0.39; 0.81	0.48
Milk Fat, %	Fig.8A	1.06	0.11; 2.02	0.03
Sow BW Loss, kg	Fig.9A	-0.07	-0.38; 0.24	0.67
Sow BF Loss, mm	Fig.9B	0.63	-2.28; 3.53	0.66
Sow WEI, d	Fig.10	-0.20	-0.35; -0.06	0.01

Note: ¹ Overall effects of adding fat to sow diets on performance of sows and piglets. ² Position of the figures where the relevant indicator data in the same row. ³ SMD: Standardized mean difference. ⁴ 95%-CI: 95% confidence interval. ⁵P-value: Probability values less than or equal to 0.10 were deemed significant and P values over 0.10 but less than 0.15 were considered a trend. Abbreviations: ADFI: Average daily feed intake during lactation period; ADEI: Average daily energy intake during lactation period; Litter weight (birth): Litter weight of piglets at birth; Litter weight (weaning): Litter weight of piglets at weaning; Litter size (birth): Total piglet numbers per litter at birth; Liveborn litter size: Total live piglet numbers per litter at birth; Litter-ADG: Litter average daily gain during lactation; Sow BW Loss: Loss of body weight loss of sows from farrowing to wean; Sow BF Loss: Loss of backfat thickness of sows from farrowing to wean; Sow WEI: Weaning to estrus interval of sows

ISSN: 2049-1891