High levels of standardized ileal digestible amino acids improve feed efficiency in slow- growing pigs at late grower- finisher stage

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dc.contributor.authorCamp Montoro, Jordi
dc.contributor.authorSolà- Oriol, David
dc.contributor.authorMuns, Ramon
dc.contributor.authorGasa, Josep
dc.contributor.authorLlanes, Núria
dc.contributor.authorManzanilla, Edgar Garcia
dc.date.accessioned2022-03-14T13:32:55Z
dc.date.available2022-03-14T13:32:55Z
dc.date.issued2022-03-06
dc.descriptionPublication history: Accepted - 4 July 2021; Published online - 6 March 2022.en_US
dc.description.abstractSlow-growing pigs negatively affect production efficiency in conventional pig farms by increasing the occupation time of the facilities and being a limiting factor for the All-In/All-Out swine production systems. This subset of pigs is usually managed with the rest of the pigs, and their nutrient requirements may not be fulfilled. The purpose of the present study was to compare the productive performance of slow- and fast-growing pigs to different standardized ileal digestible (SID) amino acids (AA) dietary levels at late grower–finisher stage. A total of 84 pigs were weighed, tagged, and classified as slow-growing (SG; n = 48; 24.1 ± 1.38 kg) or fast-growing pigs (FG; n = 36; 42.7 ± 1.63 kg) at 11 weeks of age. Pigs were housed in mixed sex pens (n = 8 SG+6 FG/pen) equipped with feeding stations to record daily feed intake per individual pig. Pigs were assigned to three dietary treatments resulting in a 2 × 3 factorial arrangement at 15 weeks of age. Isoenergetic diets were formulated by increasing the ideal protein profile based on the following SID lysine (Lys) levels: 0.92%, 1.18% and 1.45%. Pigs were weighed bi-weekly until 21 weeks of age. Fast-growing pigs were 33.7 kg heavier, gained 255 g/day and consumed 625.5 g/day more than SG pigs (p < 0.001). No interaction or diet effects were observed for final body weight, average daily gain and average daily feed intake (p > 0.05). However, feed conversion ratio was 0.3 lower for SG pigs fed 1.45% SID Lys/AA compared to SG pigs fed 0.92% SID Lys/AA (p = 0.002). Feed conversion ratio was not different within the FG pigs’ dietary treatments (p > 0.05). The efficiency of SG pigs may be improved when dietary SID AA levels are increased from 0.92 up to 1.45% SID Lys/AA. Thus, nutrient requirements may vary depending on growth rate at the same age, and SG pigs may require higher dietary SID AA levels than FG pigs to achieve similar productive performance.en_US
dc.description.sponsorshipTeagasc Walsh Scholarship. Grant Number: 0415, Open access funding provided by IReL WOA Institution: Irish Agriculture and Food Development Authority Blended DEAL: IReLen_US
dc.identifierhttp://hdl.handle.net/20.500.12518/415
dc.identifier.citationCamp Montoro, J., Solà‐Oriol, D., Muns, R., Gasa, J., Llanes, N. and Manzanilla, E.G. (2021) ‘High levels of standardized ileal digestible amino acids improve feed efficiency in slow‐growing pigs at late grower‐finisher stage’, Journal of Animal Physiology and Animal Nutrition. Wiley. doi:10.1111/jpn.13610.en_US
dc.identifier.issn0931-2439
dc.identifier.issn1439-0396 (electronic)
dc.identifier.urihttps://doi.org/10.1111/jpn.13610
dc.language.isoenen_US
dc.publisherWileyen_US
dc.rights© 2021 The Authors. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.en_US
dc.subjectgrowth performanceen_US
dc.subjectgrowth rateen_US
dc.subjectlysineen_US
dc.subjectpigen_US
dc.subjectrequirementsen_US
dc.subjectswineen_US
dc.titleHigh levels of standardized ileal digestible amino acids improve feed efficiency in slow- growing pigs at late grower- finisher stageen_US
dc.typeArticleen_US
dcterms.dateAccepted2021-07-04
dcterms.dateSubmitted2021-02-22

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