Economie et santé en production porcine

Madec, F.; Fourichon, Christine; Morvan, Patrick; Labbe, A.

doi:10.20870/productions-animales.1992.5.2.4229

Cited by 5 publications

(2 citation statements)

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“…Mycoplasma hyopneumoniae (M hyo) is the principal aetiological agent for enzootic pneumonia (EP), a chronic respiratory disease considered to be one of the most widespread and economically damaging diseases on pig operations (Madec and others 1992). The lung lesions are characterised by well‐defined, greyish‐red depressed cranioventral areas of consolidation (Kobisch and others 1993).…”

Section: Introductionmentioning

confidence: 99%

Use of tylvalosin in the control of porcine enzootic pneumonia

Pallarés¹,

Lasa

Roozen³

et al. 2015

Veterinary Record Open

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ObjectivesThe purpose of this study was to investigate the efficacy of tylvalosin (Aivlosin Water Soluble Granules, ECO Animal Health) in drinking water for control of Mycoplasma hyopneumoniae (M hyo) on a farm with chronic enzootic pneumonia (EP) problems and high prevalence of mycoplasma-like lesions at slaughter.DesignOn a 4000-sow farm in the southeast of Spain, 1500 animals of same age were randomly divided into two groups: 900 pigs in the treated group (TG) and 600 pigs in the non-treated control group (CG). TG was medicated for seven days with tylvalosin in drinking water (2.5 mg tylvalosin/kg bodyweight (BW)) at weaning (from 21st to 28th day of life) and a second treatment when moved to finisher barn (from 63rd to 70th day of life).ResultsIn the TG, there was a significant reduction in the severity (P<0.001) and number of animals with lung lesions (P<0.001) compared with CG. TG had an increased average daily gain and decreased average number of days in finishing. TG had a lower average carcase weight, but improved homogeneity. M hyo was not detected by q-PCR in samples, taken from lungs with characteristic EP lesions in the TG (0/9), in contrast to the CG (8/9 positive).ConclusionsA strategic medication with Aivlosin at 2.5 mg tylvalosin/kg BW in drinking water for seven days at weaning and when moved to finisher barn significantly reduces mycoplasma-like lung lesions and improves productivity parameters.

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Section: Introductionmentioning

confidence: 99%

Use of tylvalosin in the control of porcine enzootic pneumonia

Pallarés¹,

Lasa

Roozen³

et al. 2015

Veterinary Record Open

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“…SWINE enzootic pneumonia, a disease caused by Mycoplasma hyopneumoniae , is one of the most widespread and economically damaging diseases to affect intensive pig farming operations (Straw and others 1989, Madec and others 1992). The principal aim of attempts to overcome the effects of the disease is to prevent the action of other opportunist agents which can aggravate them.…”

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confidence: 99%

Evaluation of the zootechnical parameters of vaccinating against swine enzootic pneumonia under field conditions

Pallarés¹,

Gómez

Muñoz

2001

Veterinary Record

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A field test was carried out in different production systems to evaluate the effect of vaccination against swine enzootic pneumonia with an inactivated vaccine. A total of 13,691 pigs of four different genetic origins were used, of which 7,351 were vaccinated and 6,340 were used as controls. The animals were housed in 16 fattening units, in which the 'one-site', 'two-site' and 'three-site' production systems were represented. There were the following statistically significant differences in favour of the vaccinated animals: a 1.89 per cent lower mortality (P<0.001), a 0.09 lower feed conversion ratio (P<0.030), a 3.12 per cent lower cost per kilogram gained in fattening (P<0.031), a 4.02 per cent lower cost per kilogram of carcase (P<0.018), a 3.77 per cent lower cost of feed per kilogram gained in fattening (P<0.012) and a 56.75 per cent lower potential loss of profit per kilogram gained in fattening due to mortality (P<0.001). An analysis of variance of the effects of genetic origin, treatment and production system on the different parameters showed that only the treatment had any statistically significant effect on the percentage mortality (P<0.002), feed conversion ratio (P<0.030), cost per kilogram gained in fattening (P<0.019), cost per kilogram of carcase (P<0.020), cost of feed per kilogram gained in fattening (P<0.015) and potential loss of profit per kilogram gained in fattening due to mortality (P<0.002).

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An attempt at measuring health in nucleus and multiplier pig farms

Madec

Kobisch

Leforban

1993

Livestock Production Science

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Madec, F., . An attempt at measuring health in nucleus and multiplier pig farms. Livest. Prod. Sci., 34:281-294.A pilot epidemiological inquiry was undertaken in France in a group of 205 nucleus and multiplier pig farms. The aim was to find out a method for a quantitative evaluation of the health level in farms selling young breeders. An exhaustive protocol was prepared for data collection. The sources of information were clinical inspections on the farms, meat inspection data at slaughter and laboratory investigations. Data processing issued in the selection of a profile made of 14 prevailing health indicators. These were then associated so as to set up a health index with an overall score. In a second phase, the relevance of the method with respect to disease transmission was assessed. The principle was a contact challenge within totally controlled facilities between SPF pigs hysterectomy-derived and gilts taken from farms with different health scores as previously checked. The contact lasted for 28 days. Eleven farms were chosen and in every one of them 7 gilts were sampled and 10 SPF pigs were assigned to each of these farms. All the pigs were submitted to a detailed observation. At the end of it the pigs were euthanized at the laboratory and checked to find out any lesions and infectious agents. A wide range of symptoms appeared among the SPF pigs. Mortality rate was 14.6%. Pneumonia affected 23.7% of them. A relationship was found between the germ transfer and the severity of the troubles. The degree of illness in SPF pigs was clearly related to the score obtained previously in the corresponding farms. Consequently, the method was considered as valid with respect to health evaluation.

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Economie et santé en production porcine

Cited by 5 publications

References 0 publications

Use of tylvalosin in the control of porcine enzootic pneumonia

Use of tylvalosin in the control of porcine enzootic pneumonia

Evaluation of the zootechnical parameters of vaccinating against swine enzootic pneumonia under field conditions

An attempt at measuring health in nucleus and multiplier pig farms

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