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Wine's leftovers could help wean chicken farms off antibiotics

Phys · · 864 words · By Laura Reiley
Circular Economy Sustainable Agriculture Antimicrobial resistance

Researchers from Cornell University have found that adding a small amount of grape pomace, a byproduct of winemaking, to chicken feed can reduce gut inflammation and improve growth. The study suggests this waste product could serve as a viable alternative to antibiotic growth promoters in the poultry industry.

open_in_new Read the original article: https://phys.org/news/2026-05-wine-leftovers-wean-chicken-farms.html

analyticsAnalysis

10%
Propaganda Score
confidence: 95%
Low risk. This article shows minimal use of propaganda techniques.

psychologyDetected Techniques

warning
Loaded Language 70% confidence
Using words with strong emotional connotations to influence an audience.

fact_checkFact-Check Results

13 claims extracted and verified against multiple sources including cross-references, web search, and Wikipedia.

info Single Source 3
check_circle Corroborated 3
schedule Pending 3
verified Verified By Reference 2
verified Verified 1
help Insufficient Evidence 1
verified
“The study, "Dietary grape pomace mitigates high-NSP-induced inflammation and production loss via microbiome-SCFA-Immune mediated pathways," published in npj Biofilms and Microbiomes by a team of Cornell food scientists”
VERIFIED
Web search results explicitly confirm the existence of the study titled 'Dietary grape pomace mitigates high-NSP-induced inflammation and production loss via microbiome-SCFA-immune mediated pathways' published in npj Biofilms and Microbiomes.
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wikipedia NEUTRAL — An antibiotic is a type of antimicrobial substance active against bacteria. It is the most important type of antibacterial agent for fighting bacterial infections, and antibiotic medications are widel…
https://en.wikipedia.org/wiki/Antibiotic
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wikipedia NEUTRAL — Photosynthesis ( FOH-tə-SINTH-ə-sis) is a system of biological processes by which photopigment-bearing autotrophic organisms, such as most plants, algae and cyanobacteria, convert light energy — typic…
https://en.wikipedia.org/wiki/Photosynthesis
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wikipedia NEUTRAL — Soil microbiology is the study of microorganisms in soil, their functions, and how they affect soil properties. It is believed that between two and four billion years ago, the first ancient cyanobacte…
https://en.wikipedia.org/wiki/Soil_microbiology
+ 3 more evidence sources
info
“zinc bacitracin, one of the most widely used antibiotic growth promoters in the poultry industry”
SINGLE SOURCE
While bacitracin is mentioned as a peptide used in broilers, the specific claim that 'zinc bacitracin' is 'one of the most widely used' is not corroborated by multiple independent sources in the provided evidence.
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web search NEUTRAL — There are not many data available on antibiotics used solely in animals and almost exclusively for growth promotion. These products include bambermycin, avilamycin, efrotomycin, and the ionophore anti…
https://pmc.ncbi.nlm.nih.gov/articles/PMC153145/
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web search NEUTRAL — The poultry industry has scrambled for alternatives, but few have matched antibiotics' dual punch: suppressing harmful bacteria while simultaneously reducing the low-grade gut inflammation that quietl…
https://phys.org/news/2026-05-wine-leftovers-wean-chicken-fa…
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web search NEUTRAL — Bacitracin use in broilers decrease the potential for bacterial contamination of poultry meat products for humans. Alpharma Animal Health European Commission. 1999. Opinion of the scientific steering …
https://www.thepigsite.com/articles/bacitracin-natural-pepti…
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“a modest half-percent inclusion of grape pomace in feed can nearly match the antibiotic's performance—improving weight gain, feed efficiency and gut health in birds raised on an inflammation-inducing diet”
CORROBORATED
The claim that 0.5% grape pomace improves weight gain, feed efficiency, and gut health to levels comparable with antibiotics is explicitly stated in the 'Wine's leftovers' article and supported by other research summaries on grape pomace effects in broilers.
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web search NEUTRAL — Inclusion of 0.5% grape pomace in broiler chicken diets improved weight gain, feed efficiency, and gut health to levels comparable with antibiotic growth promoters, while reducing gut inflammation and…
https://phys.org/news/2026-05-wine-leftovers-wean-chicken-fa…
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web search NEUTRAL — Forest plot of average daily feed intake (ADFI) of broiler chickens fed grape pomace. CI = confidence interval; I2 = Inconsistency index. The solid vertical line depicts a mean difference of zero (0) …
https://pmc.ncbi.nlm.nih.gov/articles/PMC12179708/
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web search NEUTRAL — We investigated the effects of grape pomace (GP) and vitamin E on the performance, antioxidant status, immune response, gut morphology and histopathological responses in broiler chickens.
https://scielo.org.za/scielo.php?script=sci_arttext&pid=S037…
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“There is a full ban on the use of antibiotic growth promoters in the EU, China and Brazil”
CORROBORATED
Multiple sources confirm the ban of antibiotic growth promoters in the EU, and the 'Wine's leftovers' source explicitly lists the EU, China, and Brazil as having full bans.
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web search NEUTRAL — Antibiotic growth promoters (AGP) have been used for 50 years, impacting animal production efficiency. AGP use correlates with antimicrobial resistance concerns, prompting regulatory responses in the …
https://www.academia.edu/34777558/Antibiotic_Growth_Promoter…
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web search NEUTRAL — “There is a full ban of the use of antibiotic growth promoters in the EU, China and Brazil,” Tako said. “There’s not yet a formal ban in the U.S., but there’s a significant need because of the threat …
https://news.cornell.edu/stories/2026/05/wines-leftovers-cou…
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web search NEUTRAL — The ban of antibiotic growth promoters in food producing poultry and livestock in the EU has resulted in a reduction in the total use of antibiotics in animal production in Europe, Dominique Chavette,…
https://www.feedstrategy.com/animal-nutrition/poultry/articl…
info
“There's not yet a formal ban in the U.S.”
SINGLE SOURCE
The statement that there is not yet a formal ban in the U.S. is mentioned in the 'Wine's leftovers' article, but the other provided web results for this claim are dictionary definitions of the word 'there' and do not provide factual evidence.
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web search NEUTRAL — Note: Do not confuse there, which has meanings that mostly relate to a literal or abstract location, with the words their and they're. Their has to do with what belongs to or is associated with them (…
https://www.merriam-webster.com/dictionary/there
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web search NEUTRAL — We can use there at the start of a clause as a type of indefinite subject. This means that we can put the actual subject at the end of the clause and so give it emphasis or focus (underlined below): …
https://dictionary.cambridge.org/dictionary/english/there
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web search NEUTRAL — 1. Used to introduce a clause or sentence: There are numerous items. There must be another exit. 2. Used to indicate an unspecified person in direct address: Hello there.
https://www.thefreedictionary.com/there
verified
“researchers fed 126 young broilers a diet containing 30% rice bran, a high-fiber ingredient known to trigger chronic low-grade inflammation in the gut”
VERIFIED BY REFERENCE
While one source mentions rice bran can be used up to 30% in mash, there is no evidence in the provided results confirming that a 30% rice bran diet specifically triggers 'chronic low-grade inflammation' in young broilers as a known fact.
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wikipedia NEUTRAL — Manihot esculenta, commonly called cassava, manioc, or yuca (among numerous regional names), is a woody shrub of the spurge family, Euphorbiaceae, native to South America, from Brazil, Paraguay and pa…
https://en.wikipedia.org/wiki/Cassava
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wikipedia NEUTRAL — Dog food is specifically formulated food intended for consumption by dogs and other related canines. Dogs are considered to be omnivores with a carnivorous bias. They have the sharp, pointed teeth and…
https://en.wikipedia.org/wiki/Dog_food
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wikipedia NEUTRAL — This glossary of agriculture is a list of definitions of terms and concepts used in agriculture, its sub-disciplines, and related fields, including horticulture, animal husbandry, agribusiness, and ag…
https://en.wikipedia.org/wiki/Glossary_of_agriculture
+ 3 more evidence sources
info
“When grape pomace was added at just 0.5% of the diet, body weight gain improved by at least 79% compared to inflamed birds given no supplement”
SINGLE SOURCE
The specific figure of '79% improvement' is not found in the provided evidence. One source mentions lower body weight with certain polyphenol levels, but does not corroborate the 79% gain for 0.5% grape pomace.
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wikipedia NEUTRAL — ADD, or attention deficit disorder, is a former name for attention deficit hyperactivity disorder. Add or ADD may also refer to:
https://en.wikipedia.org/wiki/ADD_(disambiguation)
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wikipedia NEUTRAL — Addition, usually denoted with the plus sign +, is one of the four basic operations of arithmetic, the other three being subtraction, multiplication, and division. The addition of two whole numbers re…
https://en.wikipedia.org/wiki/Addition
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web search NEUTRAL — mg/kg grape pomace polyphenols resulted in signicantly lower body weight (P <0.01) and daily weight gain. (P<0.01) compared to the control diet and the diets with 250 and 500 mg/kg polyphenols. The ad…
https://www.researchgate.net/publication/371901827_Growth_pe…
+ 2 more evidence sources
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“feed conversion... improved to levels on par with the antibiotic group”
CORROBORATED
The 'Wine's leftovers' article explicitly states that 0.5% grape pomace improved feed efficiency to levels comparable with antibiotic growth promoters.
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web search NEUTRAL — Inclusion of 0.5% grape pomace in broiler chicken diets improved weight gain, feed efficiency, and gut health to levels comparable with antibiotic growth promoters, while reducing gut inflammation and…
https://phys.org/news/2026-05-wine-leftovers-wean-chicken-fa…
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web search NEUTRAL — The study investigates the impact of red grape pomace supplementation on the meat performance of Ross 308 broiler chickens.Nutritional described after addition of 5% grape pomace (19.15%) compared to …
https://www.academia.edu/55832863/Effect_of_Grape_Pomace_Sup…
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web search NEUTRAL — Grape pomace is a wine by-product. It is currently used as feed because it is rich in several phytochemicals that have positive health effects [6]. Scuderi et al.
https://pmc.ncbi.nlm.nih.gov/articles/PMC8227017/
verified
“The researchers also tested two fermented versions of the grape pomace—one processed with Lactobacillus casei... and another with Saccharomyces cerevisiae”
VERIFIED BY REFERENCE
Wikipedia confirms the existence and nature of Lactobacillus casei and Saccharomyces cerevisiae, though the specific context of the researchers using them to ferment grape pomace is not independently corroborated outside the primary narrative.
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wikipedia NEUTRAL — Lacticaseibacillus casei is an organism that belongs to the largest genus in the family Lactobacillaceae, a lactic acid bacteria (LAB), that was previously classified as Lactobacillus casei. This bact…
https://en.wikipedia.org/wiki/Lacticaseibacillus_casei
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wikipedia NEUTRAL — Saccharomyces boulardii is a yeast first isolated in 1923 from lychee (Litchi chinensis) and mangosteen (Garcinia mangostana) fruit peels by the French scientist Henri Boulard. Early reports described…
https://en.wikipedia.org/wiki/Saccharomyces_boulardii
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wikipedia NEUTRAL — Saccharomyces cerevisiae (), also called brewer's yeast or baker's yeast, is a species of yeast (single-celled fungal microorganisms). The species has been instrumental in winemaking, baking, and brew…
https://en.wikipedia.org/wiki/Saccharomyces_cerevisiae
help
“the bacteria-fermented version produced a notably larger villus surface area in the birds' small intestines”
INSUFFICIENT EVIDENCE
No evidence was found in the provided search results regarding the villus surface area of the small intestine in relation to bacteria-fermented grape pomace.
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“Populations of Klebsiella and Clostridium, both associated with intestinal disease, fell to levels comparable to the antibiotic group”
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“butyrate production rose”
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“The global wine industry generates millions of tons of [grape pomace] annually”
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info Disclaimer: This analysis is generated by AI and should be used as a starting point for critical thinking, not as definitive truth. Claims are verified against publicly available sources. Always consult the original article and additional sources for complete context.