Abstract
Penetrance of halothane genes was shown to be incomplete (91 percent) in Belgian Landrace pigs. Determination of polymorphic variants of blood marker systems, combined with halothane testing, allowed more accurate diagnosis of halothane sensitivity. Depending on the position of each particular marker in the halothane linkage group an accuracy up to 98.5 percent in halothane phenotyping can be reached. In addition halothane genotyping can also be performed.
The influence of stress susceptibility on carcass, meat quality and reproductive traits was studied by correlating the activities of creatine kinase and lactate dehydrogenase with breeding and fattening results and by comparing the results obtained in halothane positive and halothane negative Belgian Landrace pigs. Little effect was found in daily weight gain and food conversion. Stress susceptible pigs yielded on average two percent more lean but meat quality, determined by temperature and at pH 1 h after slaughter and by the Göfo value, was significantly worse. In farrowings subsequent to the first halothane negative sows provided more piglets, this amounted to 0.4 extra piglets in the second and one extra piglet in the following litters at birth, with an additional gain of 0.2 piglets at weaning in all litters. A cross breeding scheme is proposed in order to obtain good reproductive and meat quality characteristics combined with a good carcass.
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© 1987 ECSC, EEC, EAEC, Brussels-Luxembourg
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Lampo, P., van Zeveren, A., Bouquet, Y. (1987). Research on Stress Susceptibility in Belgian Pig Populations; Influence on Zootechnical Parameters and the Practical Use of Blood Marker Systems. In: Tarrant, P.V., Eikelenboom, G., Monin, G. (eds) Evaluation and Control of Meat Quality in Pigs. Current Topics in Veterinary Medicine and Animal Science, vol 38. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-3301-9_34
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DOI: https://doi.org/10.1007/978-94-009-3301-9_34
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