The Effect of Vaccination against<i>Mycoplasma hyopneumoniae</i>in Pig Herds with a Continuous Production System

Maes, Dominiek; Deluyker, Hubert; Verdonck, Marc; Castryck, Frans; Miry, C; Lein, A; Vrijens, Bernard; Kruif, Aart de

doi:10.1111/j.1439-0450.1998.tb00820.x

Cited by 42 publications

(40 citation statements)

References 11 publications

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“…The percentage of mortality during fattening showed a statistically significant difference in favour of vaccinated animals, a result which was not obtained in other field studies using the same vaccine [10,11].…”

Section: Discussioncontrasting

confidence: 80%

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Vaccination against swine enzootic pneumonia in field conditions: effect on clinical, pathological, zootechnical and economic parameters

Pallarés

Gómez

Ramis³

et al. 2000

Vet. Res.

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-A field study was carried out to evaluate the effect of vaccination against swine enzootic pneumonia in different production systems (closed or one-site, and open, two-or three-site, systems). The percentage of mortality showed statistically significant differences (p < 0.001) in favour of vaccination in all the production systems examined. Zootechnical and economic parameters also reflected the benefits of vaccination, although only the feed conversion ratio showed statistically significant differences (p < 0.030). A macroscopic study of lungs at slaughter pointed to statistically significant differences (p < 0.001) in favour of vaccination in the one-and two-site production systems. The histopathological and immunocytochemical study showed complete concordance with the macroscopic diagnosis (p < 0.001). Such relationship confirms the suitability of macroscopic diagnosis in field conditions. pig / Mycoplasma hyopneumoniae / enzootic pneumonia / vaccine / field study Résumé -Vaccination contre la pneumonie enzootique porcine dans les conditions de terrain : effet sur des paramètres cliniques, anatomopathologiques, zootechniques et économiques. Nous avons réalisé une étude dans les conditions de terrain pour évaluer l'effet de la vaccination contre la pneumonie enzootique porcine dans différents systèmes de production (fermé ou un site, et ouverts, deux sites ou trois sites). Le pourcentage de mortalité montre des différences significatives (p < 0,001) en faveur des animaux vaccinés quelque soit le système de production. Pour tous les paramètres zootechniques et économiques mesurés, nous avons établi des valeurs favorables chez les animaux Vet. Res. 31 (2000) 573-582 573

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Section: Discussioncontrasting

confidence: 80%

“…Besides the above differences, the study described here is based on a much larger number of pigs (13691) than that used in other experiments [1,2,[10][11][12]. The study, which was carried out in a pig-rearing company, also takes into account the different systems which are used in the field.…”

Section: Discussionmentioning

confidence: 99%

Vaccination against swine enzootic pneumonia in field conditions: effect on clinical, pathological, zootechnical and economic parameters

Pallarés

Gómez

Ramis³

et al. 2000

Vet. Res.

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“…Vaccination is a very common control measure which has been extensively proven to reduce performance losses, the severity of clinical signs and lung lesions (Maes and others 1998, 1999, Jensen and others 2002, Wilson and others 2012, Del Pozo Sacristán and others 2014). …”

Section: Introductionmentioning

confidence: 99%

Mycoplasma hyopneumoniaevaccination at or shortly before weaning under field conditions: a randomised efficacy trial

et al. 2017

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This study assessed the efficacy of two different Mycoplasma hyopneumoniae vaccination programmes in relation to the time of weaning. Eight hundred and twenty-eight piglets were randomly divided into three groups: group V1 was vaccinated three days before weaning, group V2 at weaning (21 days of age) and group NV was left non-vaccinated. Vaccinations were performed using Ingelvac MycoFLEX. After the nursery period, 306 pigs were allocated to fattening unit (F1) and 501 pigs to a second unit (F2). Efficacy was evaluated using performance parameters and pneumonia lesions at slaughter. Statistically significant differences were obtained in F2 where group V1 had a higher average daily weight gain compared to groups V2 and NV for the entire study period (17 and 18 g/day, respectively) and the fattening period (26 and 36 g/day, respectively) (P<0.05). Considering respiratory disease scores for both fattening units, group V1 was the only group where coughing severity did not increase significantly between placement and the end of the fattening period (P>0.05). Between groups, there were no statistically significant differences for the average lung lesion scores (V1=3.44; V2=4.61; NV=4.55, P>0.05) and the prevalence of pneumonia (V1=35.0 per cent; V2=38.0 per cent; NV=41.4 per cent, P>0.05). Overall, vaccination against M hyopneumoniae before weaning provided numerically better performance than vaccination at weaning, but did not reach statistical significance. An influenza outbreak in F1 and the presence of coexisting mixed respiratory infections in both F1 and F2 could have possibly influenced the performance of both vaccinated groups across all measured parameters.

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“…In comparison, Step et al (2008) observed no differences in HCW between weaned cattle vs. weaned and vaccinated or nonbackgrounded (no wean or vaccination history) cattle. Maes et al (1998) showed no significant differences (P = 0.4116) in carcass traits between vaccinated and unvaccinated pigs. This study shows little effect of antibody level or responses to vaccination with traditional carcass quality traits, supporting the concept that increased antibody levels do not have deleterious consequences on carcass quality.…”

Section: Response To Vaccination Trait Effects On Carcass Quality Traitsmentioning

confidence: 97%

Evaluation of response to bovine viral diarrhea virus type 2 vaccination and timing of weaning on yearling ultrasound body composition, performance, and carcass quality traits in Angus calves1,2,3

Tait

Downey

Mayes

et al. 2013

Journal of Animal Science

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There are concerns about antagonisms between immunity and animal productivity in livestock production. The objective of this study was to evaluate the effect of antibody levels through a response to vaccination protocol, weaning timing, and their interaction on performance and carcass quality traits in Angus beef cattle. Final antibody level and response to vaccination were based on neutralizing serum antibodies against bovine viral diarrhea virus type 2 (BVDV2). Calves were followed through development and the feedlot phase, with collection of yearling ultrasound (n = 957), preharvest (n = 762), and carcass (n= 673) data. In this study, 48% of the animals were observed to have positively responded to the vaccine, as evidenced by higher final antibody levels compared to prevaccination antibody levels. Increased final antibody levels were significantly (P < 0.05) associated with increased yearling weight and increased subcutaneous fat over the rump. An interaction between final antibody level and weaning time also was associated (P < 0.05) with Warner-Bratzler shear force (WBSF) and meat pH, with a favorable, negative relationship between final antibody and WBSF in calves weaned at initial vaccination. Overall antibody response by wean time interaction had a significant (P < 0.05) association with ADG and meat pH, with calves weaned at initial vaccination having a favorable, positive relationship between overall antibody response and ADG. Under both the final antibody and overall antibody response models, animals weaned at initial vaccination had significantly (P < 0.05) lower intramuscular fat at yearling time and conversely higher harvest weight than animals weaned at the booster vaccination. When antibody response was grouped (none, low, high), a significant interaction (P < 0.05) between antibody response group and weaning time was identified for ADG, harvest weight, and HCW. Animals weaned at the initial vaccination in the high antibody response group had the advantage for ADG, harvest weight, and HCW compared to animals in the high-response group that were weaned at booster vaccination. Linear increases in antibody response generally did not have negative effects on performance or carcass quality traits in finished cattle (P > 0.05). Therefore, producers should not be concerned about decreased production or quality attributes as a result of developing a robust antibody response to vaccination for BVDV2 in beef cattle. RightsWorks produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted. ABSTRACT:There are concerns about antagonisms between immunity and animal productivity in livestock production. The objective of this study was to evaluate the effect of antibody levels through a response to vaccination protocol, weaning timing, and their interaction on performance and carcass quality traits in Angus beef cattle. Final antibody level and response to vaccination were based on neutralizing serum a...

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The Effect of Vaccination againstMycoplasma hyopneumoniaein Pig Herds with a Continuous Production System

Cited by 42 publications

References 11 publications

Vaccination against swine enzootic pneumonia in field conditions: effect on clinical, pathological, zootechnical and economic parameters

Vaccination against swine enzootic pneumonia in field conditions: effect on clinical, pathological, zootechnical and economic parameters

Mycoplasma hyopneumoniaevaccination at or shortly before weaning under field conditions: a randomised efficacy trial

Evaluation of response to bovine viral diarrhea virus type 2 vaccination and timing of weaning on yearling ultrasound body composition, performance, and carcass quality traits in Angus calves1,2,3

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