Resting of pigs and hot-fat trimming and accelerated chilling of carcasses to improve pork quality

Market pigs (n = 120) were rested 0, 1, 2, or 3 h before slaughter. One carcass side was hot-fat trimmed (HFT) immediately after dressing, and the other was not fat trimmed (NFT). Sides received conventional chilling (CC) or accelerated chilling (AC) in a freezer at -32 degrees C for 100 min. Skin t...

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Veröffentlicht in:Journal of animal science 1998-01, Vol.76 (1), p.74-86
Hauptverfasser: Milligan, S.D, Ramsey, C.B, Miller, M.F, Kaster, C.S, Thompson, L.D
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container_issue 1
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container_title Journal of animal science
container_volume 76
creator Milligan, S.D
Ramsey, C.B
Miller, M.F
Kaster, C.S
Thompson, L.D
description Market pigs (n = 120) were rested 0, 1, 2, or 3 h before slaughter. One carcass side was hot-fat trimmed (HFT) immediately after dressing, and the other was not fat trimmed (NFT). Sides received conventional chilling (CC) or accelerated chilling (AC) in a freezer at -32 degrees C for 100 min. Skin temperatures of live pigs decreased 5 degrees C during 3 h of rest, and resting reduced muscle temperature at .5 and 1.5 h postmortem. Early postmortem muscle pH was .3 higher if pigs were rested up to 2 h if CC was used (P less than or equal to .01). Resting pigs 2 h decreased loin purge about 1% and increased cured ham yields 6% over those not rested. The AC carcasses had about .15 higher muscle pH from 4.5 to 24 h postmortem than CC carcasses (P less than or equal to .03). The AC improved loin quality about 15% and lowered L* values of loins and hams about 4% (P .04). The AC substantially reduced the incidence of unacceptable quality in loins and hams, with the most effect on hams, and slightly toughened loin muscles but not cured ham muscles. Resting of pigs and AC of carcasses gave superior color of loin chops at d 0 of retail display and lowered L* values during display. The HFT process improved ham quality scores about 8% but not loin scores. Resting pigs for 2 h, AC, and HFT in concert or separately are effective means of improving pork quality; AC had by far the greatest effect
doi_str_mv 10.2527/1998.76174x
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One carcass side was hot-fat trimmed (HFT) immediately after dressing, and the other was not fat trimmed (NFT). Sides received conventional chilling (CC) or accelerated chilling (AC) in a freezer at -32 degrees C for 100 min. Skin temperatures of live pigs decreased 5 degrees C during 3 h of rest, and resting reduced muscle temperature at .5 and 1.5 h postmortem. Early postmortem muscle pH was .3 higher if pigs were rested up to 2 h if CC was used (P less than or equal to .01). Resting pigs 2 h decreased loin purge about 1% and increased cured ham yields 6% over those not rested. The AC carcasses had about .15 higher muscle pH from 4.5 to 24 h postmortem than CC carcasses (P less than or equal to .03). The AC improved loin quality about 15% and lowered L* values of loins and hams about 4% (P .04). The AC substantially reduced the incidence of unacceptable quality in loins and hams, with the most effect on hams, and slightly toughened loin muscles but not cured ham muscles. Resting of pigs and AC of carcasses gave superior color of loin chops at d 0 of retail display and lowered L* values during display. The HFT process improved ham quality scores about 8% but not loin scores. Resting pigs for 2 h, AC, and HFT in concert or separately are effective means of improving pork quality; AC had by far the greatest effect</description><identifier>ISSN: 0021-8812</identifier><identifier>EISSN: 1525-3163</identifier><identifier>EISSN: 0021-8812</identifier><identifier>DOI: 10.2527/1998.76174x</identifier><identifier>PMID: 9464887</identifier><language>eng</language><publisher>Savoy, IL: Am Soc Animal Sci</publisher><subject>ABATTAGE D'ANIMAUX ; Animals ; Biological and medical sciences ; BODY TEMPERATURE ; CALIDAD ; CAMBIOS POST MORTEM ; CARNE ; CARNE DE CERDO ; CARNE PSE ; CERDO ; Cold Temperature ; COLOR ; COLOUR ; CONTENIDO DE HUMEDAD ; COOLING ; COULEUR ; ENFRIAMIENTO ; EXUDATIVE MEAT ; FERMETE ; FIRMEZA ; FIRMNESS ; FLAVEUR ; FLAVOR ; FLAVOUR ; Food Handling - methods ; Food Handling - standards ; Food industries ; Food products ; Fundamental and applied biological sciences. Psychology ; HAMS ; Hogs ; Hydrogen-Ion Concentration ; JAMBON ; JAMON ; LETARGO ; MEAT ; Meat - standards ; Meat and meat product industries ; MEAT CUTS ; MODIFICATION POSTMORTEM ; MOISTURE CONTENT ; PERDIDA DE PESO ; PERTE DE POIDS ; PIECE DE VIANDE ; PIEZAS DE CARNE ; PORCIN ; PORK ; POSTMORTEM CHANGES ; Product quality ; PSE MEAT ; QUALITE ; QUALITY ; Quality Control ; REFROIDISSEMENT ; REPOS ; RESISTANCE MECANIQUE ; RESISTENCIA MECANICA ; REST ; SABOR ; SACRIFICIO ; SHEAR STRENGTH ; SLAUGHTERING ; STRENGTH ; STRESS RESPONSE ; SWINE ; TEMPERATURA DEL CUERPO ; TEMPERATURE CORPORELLE ; TENDERNESS ; TENDRETE ; TENEUR EN EAU ; TERNURA ; VIANDE ; VIANDE EXSUDATIVE ; VIANDE PORCINE ; WATER CONTENT ; WEIGHT LOSSES</subject><ispartof>Journal of animal science, 1998-01, Vol.76 (1), p.74-86</ispartof><rights>1998 INIST-CNRS</rights><rights>Copyright American Society of Animal Science Jan 1998</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c391t-8b286cdc9f8f97b082bd4bae8bc9c854ca5950ace69a9bb050a56a6e6a9c4deb3</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,4024,27923,27924,27925</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&amp;idt=2246965$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/9464887$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Milligan, S.D</creatorcontrib><creatorcontrib>Ramsey, C.B</creatorcontrib><creatorcontrib>Miller, M.F</creatorcontrib><creatorcontrib>Kaster, C.S</creatorcontrib><creatorcontrib>Thompson, L.D</creatorcontrib><title>Resting of pigs and hot-fat trimming and accelerated chilling of carcasses to improve pork quality</title><title>Journal of animal science</title><addtitle>J Anim Sci</addtitle><description>Market pigs (n = 120) were rested 0, 1, 2, or 3 h before slaughter. One carcass side was hot-fat trimmed (HFT) immediately after dressing, and the other was not fat trimmed (NFT). Sides received conventional chilling (CC) or accelerated chilling (AC) in a freezer at -32 degrees C for 100 min. Skin temperatures of live pigs decreased 5 degrees C during 3 h of rest, and resting reduced muscle temperature at .5 and 1.5 h postmortem. Early postmortem muscle pH was .3 higher if pigs were rested up to 2 h if CC was used (P less than or equal to .01). Resting pigs 2 h decreased loin purge about 1% and increased cured ham yields 6% over those not rested. The AC carcasses had about .15 higher muscle pH from 4.5 to 24 h postmortem than CC carcasses (P less than or equal to .03). The AC improved loin quality about 15% and lowered L* values of loins and hams about 4% (P .04). The AC substantially reduced the incidence of unacceptable quality in loins and hams, with the most effect on hams, and slightly toughened loin muscles but not cured ham muscles. 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Ramsey, C.B ; Miller, M.F ; Kaster, C.S ; Thompson, L.D</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c391t-8b286cdc9f8f97b082bd4bae8bc9c854ca5950ace69a9bb050a56a6e6a9c4deb3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1998</creationdate><topic>ABATTAGE D'ANIMAUX</topic><topic>Animals</topic><topic>Biological and medical sciences</topic><topic>BODY TEMPERATURE</topic><topic>CALIDAD</topic><topic>CAMBIOS POST MORTEM</topic><topic>CARNE</topic><topic>CARNE DE CERDO</topic><topic>CARNE PSE</topic><topic>CERDO</topic><topic>Cold Temperature</topic><topic>COLOR</topic><topic>COLOUR</topic><topic>CONTENIDO DE HUMEDAD</topic><topic>COOLING</topic><topic>COULEUR</topic><topic>ENFRIAMIENTO</topic><topic>EXUDATIVE MEAT</topic><topic>FERMETE</topic><topic>FIRMEZA</topic><topic>FIRMNESS</topic><topic>FLAVEUR</topic><topic>FLAVOR</topic><topic>FLAVOUR</topic><topic>Food Handling - methods</topic><topic>Food Handling - standards</topic><topic>Food industries</topic><topic>Food products</topic><topic>Fundamental and applied biological sciences. 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Resting of pigs and AC of carcasses gave superior color of loin chops at d 0 of retail display and lowered L* values during display. The HFT process improved ham quality scores about 8% but not loin scores. Resting pigs for 2 h, AC, and HFT in concert or separately are effective means of improving pork quality; AC had by far the greatest effect</abstract><cop>Savoy, IL</cop><pub>Am Soc Animal Sci</pub><pmid>9464887</pmid><doi>10.2527/1998.76174x</doi><tpages>13</tpages></addata></record>
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source MEDLINE; Oxford University Press Journals All Titles (1996-Current)
subjects ABATTAGE D'ANIMAUX
Animals
Biological and medical sciences
BODY TEMPERATURE
CALIDAD
CAMBIOS POST MORTEM
CARNE
CARNE DE CERDO
CARNE PSE
CERDO
Cold Temperature
COLOR
COLOUR
CONTENIDO DE HUMEDAD
COOLING
COULEUR
ENFRIAMIENTO
EXUDATIVE MEAT
FERMETE
FIRMEZA
FIRMNESS
FLAVEUR
FLAVOR
FLAVOUR
Food Handling - methods
Food Handling - standards
Food industries
Food products
Fundamental and applied biological sciences. Psychology
HAMS
Hogs
Hydrogen-Ion Concentration
JAMBON
JAMON
LETARGO
MEAT
Meat - standards
Meat and meat product industries
MEAT CUTS
MODIFICATION POSTMORTEM
MOISTURE CONTENT
PERDIDA DE PESO
PERTE DE POIDS
PIECE DE VIANDE
PIEZAS DE CARNE
PORCIN
PORK
POSTMORTEM CHANGES
Product quality
PSE MEAT
QUALITE
QUALITY
Quality Control
REFROIDISSEMENT
REPOS
RESISTANCE MECANIQUE
RESISTENCIA MECANICA
REST
SABOR
SACRIFICIO
SHEAR STRENGTH
SLAUGHTERING
STRENGTH
STRESS RESPONSE
SWINE
TEMPERATURA DEL CUERPO
TEMPERATURE CORPORELLE
TENDERNESS
TENDRETE
TENEUR EN EAU
TERNURA
VIANDE
VIANDE EXSUDATIVE
VIANDE PORCINE
WATER CONTENT
WEIGHT LOSSES
title Resting of pigs and hot-fat trimming and accelerated chilling of carcasses to improve pork quality
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