Different feed withdrawal times before slaughter influence caecal fermentation and faecal Salmonella shedding in pigs

被引：26

作者：

Martin-Pelaez, Sandra ^{[1
]}

Peralta, Bibiana ^{[2
]}

Creus, Eva ^{[1
]}

Dalmau, Antonio ^{[3
]}

Velarde, Antonio ^{[3
]}

Perez, Jose F. ^{[1
]}

Mateu, Enric ^{[2
,4
]}

Martin-Orue, Susana M. ^{[1
]}

机构：

[1] Univ Autonoma Barcelona, Anim Nutr Management & Welf Res Grp, Dept Ciencia Anim & Aliments, Bellaterra 08193, Spain

[2] Ctr Recerca Sanitat Anim CReSA, Bellaterra 08193, Spain

[3] IRTA, Monells 17121, Girona, Spain

[4] Univ Autonoma Barcelona, Dept Sanitat & Anat Anim, Bellaterra 08193, Spain

来源：

VETERINARY JOURNAL | 2009年 / 182卷 / 03期

关键词：

Caecal fermentation; Enterobacteriaceae; Feed withdrawal; Pigs; Salmonella; CHAIN FATTY-ACIDS; ANTAGONISTIC ACTIVITY; IN-VITRO; TYPHIMURIUM; LACTOBACILLI; SWINE; COLONIZATION; VOLATILE; CARCASS; QUALITY;

D O I：

10.1016/j.tvjl.2008.08.002

中图分类号：

S85 [动物医学（兽医学）];

学科分类号：

0906 ;

摘要：

The effects of different pre-slaughter feed withdrawal times (FWT) on the gastrointestinal tract (GIT) weight and the gut environment of pigs and Salmonella shedding were investigated Trial I evaluated the effects Under experimental conditions (feed withdrawal for 18, 30 and 36 h) and trial 2 under commercial conditions ( 15 and 30 11). In trial 1, the GIT weight tended to decrease (P = 0 07). the caecal pH increased (P < 00001), short-chain fatty acids (SCFA) decreased (P < 0001) and percentage of branched-chain fatty acids (BCFA) increased as FWT increased. Similar results were observed in trial 2. but Enterobacteriaceae numbers and Salmonella positive pigs tended to increase whereas lactobacilli decreased (P < 0 0005) as FWT increased. The increase in FWT involved changes in the gut microbial ecosystem that could be associated with the trend of increased caecal Enterobacteriaceae and Salmonella in faeces, and may represent a higher risk of carcass contamination in cases of laceration of viscera. (C) 2008 Elsevier Ltd All rights reserved

引用

页码：469 / 473

页数：5

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