REVIEW PAPER
The effects of inulin supplementation in diets of pigs
on growth performance and selected meat quality traits:
a systematic review and meta-analysis
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University of Siedlce, Institute of Animal Science and Fisheries, B. Prusa 14, 08-110 Siedlce, Poland
Publication date: 2026-05-06
Corresponding author
A. Milczarek
University of Siedlce, Institute of Animal Science and Fisheries, B. Prusa 14, 08-110 Siedlce, Poland
KEYWORDS
TOPICS
ABSTRACT
Inulin supplementation has been reported to enhance performance
responses in pigs and positively modify the quality of pork. However, the results
of research are inconsistent. The present study aimed to quantify the effects
of inulin supplementation in diets of pigs on performance traits and selected
pork quality traits, using the meta-analytical approach. Data were extracted from
45 studies and analysed using the random-effect model to estimate the effects
of inulin on average daily gain (ADG), average daily feed intake (ADFI), feed
conversion ratio and selected pork quality traits including initial and ultimate
pH (pH1 and pHu), drip loss (DL) and colour. The meta-analysis detected the
influence of inulin on ADG and ADFI under several study factors. The inulin
supplementation significantly improved ADG in growing-finishing pigs but
the stronger effect was detected for the long-chain inulin. The dose of inulin
in diet (<3% and ≥3%) enhanced ADG in similar range of the effect. Inulin
supplementation decreased ADFI only in weaning pigs. There were no effects
of inulin on pH1, pHu and DL. However, inulin supplementation significantly
modified the colour of pork. A trend to increase in redness (a*) and decrease
in yellowness (b*) was detected in loins of pigs fed with lower (<3%) doses of
inulin, nonetheless the application of long-chain inulin may result in increase of
lightness (L*) of meat. In conclusion, the inulin supplementation may enhance
ADG and colour characteristics but depend on degree of polarisation and dose.
ACKNOWLEDGEMENTS
The manuscript was realized under the COOPERATION measure of the Rural Development Programme for 2014–2024 by the Agency for Restructuring and Modernisation of Agriculture (00119.DDD.6509.00063.2022.07).
CONFLICT OF INTEREST
The Authors declare that there is no conflict of interest.
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