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Effects of dietary energy sources on early postmortem muscle metabolism of finishing pigs

OBJECTIVE: This study investigated the effects of different dietary energy sources on early postmortem muscle metabolism of finishing pigs. METHODS: Seventy-two barrow (Duroc×Landrace×Yorkshire, DLY) pigs (65.0±2.0 kg) were allotted to three iso-energetic and iso-nitrogenous diets: A (44.1% starch,...

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Autores principales: Li, Yanjiao, Yu, Changning, Li, Jiaolong, Zhang, Lin, Gao, Feng, Zhou, Guanghong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Asian-Australasian Association of Animal Production Societies (AAAP) and Korean Society of Animal Science and Technology (KSAST) 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5666181/
https://www.ncbi.nlm.nih.gov/pubmed/28728385
http://dx.doi.org/10.5713/ajas.17.0090
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author Li, Yanjiao
Yu, Changning
Li, Jiaolong
Zhang, Lin
Gao, Feng
Zhou, Guanghong
author_facet Li, Yanjiao
Yu, Changning
Li, Jiaolong
Zhang, Lin
Gao, Feng
Zhou, Guanghong
author_sort Li, Yanjiao
collection PubMed
description OBJECTIVE: This study investigated the effects of different dietary energy sources on early postmortem muscle metabolism of finishing pigs. METHODS: Seventy-two barrow (Duroc×Landrace×Yorkshire, DLY) pigs (65.0±2.0 kg) were allotted to three iso-energetic and iso-nitrogenous diets: A (44.1% starch, 5.9% crude fat, and 12.6% neutral detergent fibre [NDF]), B (37.6% starch, 9.5% crude fat, and 15.4% NDF) or C (30.9% starch, 14.3% crude fat, and 17.8% NDF). After the duration of 28-day feeding experiment, 24 pigs (eight per treatment) were slaughtered and the M. longissimus lumborum (LL) samples at 45 min postmortem were collected. RESULTS: Compared with diet A, diet C resulted in greater adenosine triphosphate and decreased phosphocreatine (PCr) concentrations, greater activity of creatine kinase and reduced percentage bound activities of hexokinase (HK), and pyruvate kinase (PK) in LL muscles (p<0.05). Moreover, diet C decreased the phosphor-AKT level and increased the hydroxy-hypoxia-inducible factor-1α (HIF-1α) level, as well as decreased the bound protein expressions of HK II, PKM2, and lactate dehydrogenase A (p<0.05). CONCLUSION: Diet C with the lowest level of starch and the highest levels of fat and NDF could enhance the PCr utilization and attenuate glycolysis early postmortem in LL muscle of finishing pigs.
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spelling pubmed-56661812017-12-01 Effects of dietary energy sources on early postmortem muscle metabolism of finishing pigs Li, Yanjiao Yu, Changning Li, Jiaolong Zhang, Lin Gao, Feng Zhou, Guanghong Asian-Australas J Anim Sci Article OBJECTIVE: This study investigated the effects of different dietary energy sources on early postmortem muscle metabolism of finishing pigs. METHODS: Seventy-two barrow (Duroc×Landrace×Yorkshire, DLY) pigs (65.0±2.0 kg) were allotted to three iso-energetic and iso-nitrogenous diets: A (44.1% starch, 5.9% crude fat, and 12.6% neutral detergent fibre [NDF]), B (37.6% starch, 9.5% crude fat, and 15.4% NDF) or C (30.9% starch, 14.3% crude fat, and 17.8% NDF). After the duration of 28-day feeding experiment, 24 pigs (eight per treatment) were slaughtered and the M. longissimus lumborum (LL) samples at 45 min postmortem were collected. RESULTS: Compared with diet A, diet C resulted in greater adenosine triphosphate and decreased phosphocreatine (PCr) concentrations, greater activity of creatine kinase and reduced percentage bound activities of hexokinase (HK), and pyruvate kinase (PK) in LL muscles (p<0.05). Moreover, diet C decreased the phosphor-AKT level and increased the hydroxy-hypoxia-inducible factor-1α (HIF-1α) level, as well as decreased the bound protein expressions of HK II, PKM2, and lactate dehydrogenase A (p<0.05). CONCLUSION: Diet C with the lowest level of starch and the highest levels of fat and NDF could enhance the PCr utilization and attenuate glycolysis early postmortem in LL muscle of finishing pigs. Asian-Australasian Association of Animal Production Societies (AAAP) and Korean Society of Animal Science and Technology (KSAST) 2017-12 2017-06-26 /pmc/articles/PMC5666181/ /pubmed/28728385 http://dx.doi.org/10.5713/ajas.17.0090 Text en Copyright © 2017 by Asian-Australasian Journal of Animal Sciences This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/), which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Article
Li, Yanjiao
Yu, Changning
Li, Jiaolong
Zhang, Lin
Gao, Feng
Zhou, Guanghong
Effects of dietary energy sources on early postmortem muscle metabolism of finishing pigs
title Effects of dietary energy sources on early postmortem muscle metabolism of finishing pigs
title_full Effects of dietary energy sources on early postmortem muscle metabolism of finishing pigs
title_fullStr Effects of dietary energy sources on early postmortem muscle metabolism of finishing pigs
title_full_unstemmed Effects of dietary energy sources on early postmortem muscle metabolism of finishing pigs
title_short Effects of dietary energy sources on early postmortem muscle metabolism of finishing pigs
title_sort effects of dietary energy sources on early postmortem muscle metabolism of finishing pigs
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5666181/
https://www.ncbi.nlm.nih.gov/pubmed/28728385
http://dx.doi.org/10.5713/ajas.17.0090
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