Physiological and behavioral effects of intermittent fasting vs daily caloric restriction in meat-type poultry

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Lindholm, Caroline,1984-Linköpings universitet,Biologi,Tekniska fakulteten (författare)

Physiological and behavioral effects of intermittent fasting vs daily caloric restriction in meat-type poultry

Artikel/kapitelEngelska2023

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Elsevier,2023
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LIBRIS-ID:oai:DiVA.org:liu-193669
https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-193669URI
https://doi.org/10.1016/j.animal.2023.100849DOI

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Språk:engelska
Sammanfattning på:engelska

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Funding agencies: grant 2013–293 from the Swedish research council; Formas; the Swedish Centre of Excellence in Animal Welfare Science.
Intermittent fasting (IF) is the practice of temporal food restriction to promote metabolic switching between a glucose- and a ketone-based metabolism, which has been reported to come with diverse health benefits. IF practices appear to confer many of the advantages of caloric restriction without restricting total energy intake, and studies in both rodents and humans suggest organism-wide improvements in neurological, cardiovascular and metabolic health. IF is also commonly employed in the commercial rearing of breeding meat-type poultry, i.e. broiler breeders, which require strict feed restriction throughout life to maintain physical health. While the scientific poultry literature holds vast amounts of data on such “skip-a-day” feeding schedules, it has been unclear to what extent avian and mammalian literature may be compared as broiler breeders are typically feed-restricted to around 30% of ad libitum intake even in IF schedules. In this study we set out to disentangle the effects of IF and caloric restriction in meat-type poultry by employing both IF and daily feeding schedules at two different restriction levels. Our results suggest that the physiological response to IF in chickens is only marginally affected by the intensity of feed restriction, while behavioural parameters are more closely related to feeding level and are expected to better mirror animal welfare. Our results suggest that avian and mammalian literature on IF should be comparable. Meat-type chickens do show some peculiarities in response to IF, such as a reduced insulin sensitivity, but it is currently unclear whether this is true for all chickens or is an effect of the intense selection for rapid growth in meat-type chickens.

Ämnesord och genrebeteckningar

NATURVETENSKAP Biologi Zoologi hsv//swe
NATURAL SCIENCES Biological Sciences Zoology hsv//eng
broiler breeders; animal welfare; feed restriction; skip-a-day; ketones

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Altimiras, Jordi,1967-Linköpings universitet,Biologi,Tekniska fakulteten(Swepub:liu)joral85 (författare)
Linköpings universitetBiologi (creator_code:org_t)

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Ingår i:Animal: Elsevier17:61751-73111751-732X

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Av författaren/redakt...: Lindholm, Caroli ...; Altimiras, Jordi ...

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NATURVETENSKAP: NATURVETENSKAP; och Biologi; och Zoologi

Artiklar i publikationen: Animal

Av lärosätet: Linköpings universitet

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