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Investigation of the association of growth rate in grower-finishing pigs with the quantification of Lawsonia intracellularis and porcine circovirus type 2. / Johansen, Markku; Nielsen, MaiBritt; Dahl, Jan; Svensmark, Birgitta; Bækbo, Poul; Kristensen, Charlotte Sonne ; Hjulsager, Charlotte Kristiane; Jensen, Tim Kåre; Ståhl, Marie ; Larsen, Lars Erik; Angen, Øystein.

In: Preventive Veterinary Medicine, Vol. 108, No. 1, 2013, p. 63-72.

Publication: Research - peer-reviewJournal article – Annual report year: 2013

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Author

Johansen, Markku; Nielsen, MaiBritt; Dahl, Jan; Svensmark, Birgitta; Bækbo, Poul; Kristensen, Charlotte Sonne ; Hjulsager, Charlotte Kristiane; Jensen, Tim Kåre; Ståhl, Marie ; Larsen, Lars Erik; Angen, Øystein / Investigation of the association of growth rate in grower-finishing pigs with the quantification of Lawsonia intracellularis and porcine circovirus type 2.

In: Preventive Veterinary Medicine, Vol. 108, No. 1, 2013, p. 63-72.

Publication: Research - peer-reviewJournal article – Annual report year: 2013

Bibtex

@article{1f6285928de043d9bdf49244943347fe,
title = "Investigation of the association of growth rate in grower-finishing pigs with the quantification of Lawsonia intracellularis and porcine circovirus type 2",
keywords = "Lawsonia intracellularis, Ileitis, Porcine circovirus type 2 (PCV2), Pigs, qPCR, ELISA, Faecal load, Antibody, Average daily gain (ADG)",
publisher = "Elsevier BV",
author = "Markku Johansen and MaiBritt Nielsen and Jan Dahl and Birgitta Svensmark and Poul Bækbo and Kristensen, {Charlotte Sonne} and Hjulsager, {Charlotte Kristiane} and Jensen, {Tim Kåre} and Marie Ståhl and Larsen, {Lars Erik} and Øystein Angen",
year = "2013",
doi = "10.1016/j.prevetmed.2012.07.004",
volume = "108",
number = "1",
pages = "63--72",
journal = "Preventive Veterinary Medicine",
issn = "0167-5877",

}

RIS

TY - JOUR

T1 - Investigation of the association of growth rate in grower-finishing pigs with the quantification of Lawsonia intracellularis and porcine circovirus type 2

A1 - Johansen,Markku

A1 - Nielsen,MaiBritt

A1 - Dahl,Jan

A1 - Svensmark,Birgitta

A1 - Bækbo,Poul

A1 - Kristensen,Charlotte Sonne

A1 - Hjulsager,Charlotte Kristiane

A1 - Jensen,Tim Kåre

A1 - Ståhl,Marie

A1 - Larsen,Lars Erik

A1 - Angen,Øystein

AU - Johansen,Markku

AU - Nielsen,MaiBritt

AU - Dahl,Jan

AU - Svensmark,Birgitta

AU - Bækbo,Poul

AU - Kristensen,Charlotte Sonne

AU - Hjulsager,Charlotte Kristiane

AU - Jensen,Tim Kåre

AU - Ståhl,Marie

AU - Larsen,Lars Erik

AU - Angen,Øystein

PB - Elsevier BV

PY - 2013

Y1 - 2013

N2 - As a part of a prospective cohort study in four herds, a nested case control study was carried out. Five slow growing pigs (cases) and five fast growing pigs (controls) out of 60 pigs were selected for euthanasia and laboratory examination at the end of the study in each herd. A total of 238 pigs, all approximately 12 weeks old, were included in the study during the first week in the grower–finisher barn. In each herd, approximately 60 pigs from four pens were individually ear tagged. The pigs were weighed at the beginning of the study and at the end of the 6–8 weeks observation period. Clinical data, blood and faecal samples were serially collected from the 60 selected piglets every second week in the observation period. In the killed pigs serum was examined for antibodies against Lawsonia intracellularis (LI) and procine circovirus type 2 (PCV2) and in addition PCV2 viral DNA content was quantified. In faeces the quantity of LI cells/g faeces and number of PCV2 copies/g faeces was measured by qPCR. The objective of the study was to examine if growth rate in grower-finishing pig is associated with the detection of LI and PCV2 infection or clinical data. This study has shown that diarrhoea is a significant risk factor for low growth rate and that one log10 unit increase in LI load increases the odds ratio for a pig to have a low growth rate by 2.0 times. Gross lesions in the small intestine and LI load > log10 6/g were significant risk factors for low growth. No association between PCV2 virus and low growth was found.

AB - As a part of a prospective cohort study in four herds, a nested case control study was carried out. Five slow growing pigs (cases) and five fast growing pigs (controls) out of 60 pigs were selected for euthanasia and laboratory examination at the end of the study in each herd. A total of 238 pigs, all approximately 12 weeks old, were included in the study during the first week in the grower–finisher barn. In each herd, approximately 60 pigs from four pens were individually ear tagged. The pigs were weighed at the beginning of the study and at the end of the 6–8 weeks observation period. Clinical data, blood and faecal samples were serially collected from the 60 selected piglets every second week in the observation period. In the killed pigs serum was examined for antibodies against Lawsonia intracellularis (LI) and procine circovirus type 2 (PCV2) and in addition PCV2 viral DNA content was quantified. In faeces the quantity of LI cells/g faeces and number of PCV2 copies/g faeces was measured by qPCR. The objective of the study was to examine if growth rate in grower-finishing pig is associated with the detection of LI and PCV2 infection or clinical data. This study has shown that diarrhoea is a significant risk factor for low growth rate and that one log10 unit increase in LI load increases the odds ratio for a pig to have a low growth rate by 2.0 times. Gross lesions in the small intestine and LI load > log10 6/g were significant risk factors for low growth. No association between PCV2 virus and low growth was found.

KW - Lawsonia intracellularis

KW - Ileitis

KW - Porcine circovirus type 2 (PCV2)

KW - Pigs

KW - qPCR

KW - ELISA

KW - Faecal load

KW - Antibody

KW - Average daily gain (ADG)

U2 - 10.1016/j.prevetmed.2012.07.004

DO - 10.1016/j.prevetmed.2012.07.004

JO - Preventive Veterinary Medicine

JF - Preventive Veterinary Medicine

SN - 0167-5877

IS - 1

VL - 108

SP - 63

EP - 72

ER -