The impact of gastrointestinal parasites infection on slaughter efficiency in pigs

Knecht, Damian; Jankowska, Agata; Zaleśny, Grzegorz

doi:10.1016/j.vetpar.2011.09.006

Cited by 33 publications

(25 citation statements)

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“…However, regardless of the cuts, fat content is a constant factor decreasing its value (Boland et al 1995). The economic value of the primal cuts depends on the demand for final products derived from them, which often are sold in unprocessed forms (Knecht et al 2011;Knecht et al 2012).…”

Section: Discussionmentioning

confidence: 99%

Accuracy of estimating the technological and economic value of pig carcass primal cuts with an optical-needle device

2016

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The aim of this study was to demonstrate the possibility of using CGM-device measurements for the precise estimation of lean-meat content, the real technological and economic value of ham and loin. The experiment was carried out in two stages: the dissection (n = 136) and the industrial cutting (n = 298). Lean-meat content in carcasses was defined with a CGM device, where the thicknesses of the musculus longissimus dorsi (M2) and backfat (with the skin) (T2) were measured. The strongest correlations were achieved for the T2 measurement and the share of skin with fat or muscles in ham and loin. The strongest correlations for M2 were noted for muscle content in ham and loin. Measurements for M2 positively correlated with all the elements of the technological cutting of ham and loin, but negatively with T2 measurements, in terms of commercial value. The highest values, regardless of the point of measurement, were noted for boneless loin (loin) and ham 4D (ham). The highest estimating accuracy was noted for dissection and technological cutting of loin compared with ham. The results of the study suggest that the current classification device should be modified and improved for the evaluation of the real commercial value of the carcass.Key words: pig carcass, technological cutting, commercial value, ham, loin.Résumé : Le but de cette étude était de démontrer la possibilité d'utiliser les mesures d'un appareil CGM pour l'évaluation précise de la teneur en viande maigre et la vraie valeur technologique et économique du jambon et de la longe. L'expérience s'est effectuée en deux étapes : la dissection (n = 136) et la coupe industrielle (n = 298). La teneur en viande maigre des carcasses a été définie au moyen d'un appareil CGM, où l'épaisseur du muscle musculus longissimus dorsi (M2) et du gras dorsal (avec la peau) (T2) a été mesurée. Les meilleures corrélations ont été atteintes pour la mesure de T2 et la partie de peau avec gras ou muscles dans le jambon et la longe. Les meilleures corrélations pour M2 ont été notées pour la teneur en muscle dans le jambon et la longe. Les mesures de M2 avaient une corrélation positive avec tous les éléments de la coupe technologique du jambon et de la longe, mais une corrélation négative avec les mesures de T2 en ce qui a trait à la valeur commerciale. Les plus grandes valeurs, sans égard au point de mesure, ont été notées pour la longe sans os (« loin ») et le jambon 4D (« ham »). La plus haute exactitude d'évaluation était notée pour la dissection et la coupe technologique de la longe par rapport au jambon. Les résultats de l'étude suggèrent que l'appareil de classification actuelle devrait être modifié et amélioré pour l'évaluation de la valeur commerciale réelle de la carcasse. [Traduit par la Rédaction] Mots-clés : carcasse de porc, coupe technologique, valeur commerciale, jambon, longe.

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Section: Discussionmentioning

confidence: 99%

Accuracy of estimating the technological and economic value of pig carcass primal cuts with an optical-needle device

2016

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“…result in significant economic losses to the pig industry (Bernardo et al, 1990;Hale et al, 1985;Kipper et al, 2011;Knecht et al, 2012;Miskimins et al, 1994;Nilsson, 1982;Stewart and Hale, 1988;Van Meensel et al, 2010), the prevalence of this parasite in commercial pig farms remains high (Eijck and Borgsteede, 2005;Haugegaard, 2010;Joachim et al, 2001;Vlaminck et al, 2012). This is mainly because an Ascaris infection is in most cases a http://dx.doi.org/10.1016/j.vetpar.2015.04.012 0304-4017/© 2015 Elsevier B.V. All rights reserved.…”

Section: Introductionmentioning

confidence: 99%

Serological examination of fattening pigs reveals associations between Ascaris suum, lung pathogens and technical performance parameters

Vlaminck¹,

Düsseldorf²,

Heres³

et al. 2015

Veterinary Parasitology

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“…Sanchez-Vazquez et al (2010) recently demonstrated that infection by this parasite can decrease the animal's daily weight gain by up to 10%, and the feed conversion of pigs by up to 13% in the growing phase and at slaughter. A high occurrence of the parasite has also been reported in the herds of several countries, such as Slovakia, England and Poland (ČERNEK et al, 2012;SANCHEZ-VAZQUEZ et al, 2012;KNECHT et al, 2012).…”

Section: Introductionmentioning

confidence: 84%

Ascaris suum in pigs of the Zona da Mata, Minas Gerais State, Brazil

Fausto¹,

Oliveira²,

Fausto³

et al. 2015

Rev. Bras. Parasitol. Vet.

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Among the parasites that affect pigs, Ascaris suum stands out for causing the greatest losses to livestock production systems. This parasite can be monitored during the slaughter of animals through the identification of "milk spots" or white patches on the liver caused by its larval migration. However, infection in the herd is usually subclinical, which is why the presence of this parasite in industrial pig production has been overlooked. The aim of the study was therefore to evaluate the occurrence of milk spots on the liver of animals slaughtered in the micro-region of Ponte Nova in the Zona da Mata -Minas Gerais, Brazil, and to associate these lesions with the time of year, herd size and source of origin of the animals. An evaluation was made of 1,069 lots, totaling 108,073 animals, based on data extracted from the Federal Inspection Service. The animals were slaughtered during the period of January 2011 to June 2013. Out of the total number of slaughtered animals, 10,535 (9.75%) tested positive for these lesions. Therefore, veterinarians and producers should be warned about the inefficiency of the deworming protocols that are used, and the need to develop and/or review control strategies for this parasite in production systems.

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The impact of gastrointestinal parasites infection on slaughter efficiency in pigs

Cited by 33 publications

References 10 publications

Accuracy of estimating the technological and economic value of pig carcass primal cuts with an optical-needle device

Accuracy of estimating the technological and economic value of pig carcass primal cuts with an optical-needle device

Serological examination of fattening pigs reveals associations between Ascaris suum, lung pathogens and technical performance parameters

Ascaris suum in pigs of the Zona da Mata, Minas Gerais State, Brazil

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