20.500.12556/RUL-120290 Miopatija globoke prsne mišice pri pitovnih piščancih in purah Deep pectoral myopathy in broiler chickens and turkeys Miopatija globoke prsne mišice je degenerativna bolezen, ki povzroča poškodbe male prsne mišice pri purah in pitovnih piščancih. Ne gre za novo bolezen, je pa postajala vse pogostejša s selekcijo pitovnih piščancev in pur na hitro rast. Prizadeti sta lahko tako mala kot velika prsna mišica, vendar je zaradi neelastične ovojnice, ki jo obdaja in utesnjene lokacije zraven prsnice, zanjo bolj dovzetna mala prsna mišica. Mala prsna mišica ima glavno vlogo pri dvigovanju peruti. Ob tem delu se zaradi povečanega pretoka krvi volumen mišice poveča, pri čemer se mišica uklešči med kosti in čvrsto fascijo, krvne žile se prekinejo in nastopi pomanjkanja kisika in hranil v njej. Ob daljši izpostavljenosti lahko pride tudi do odmrtja tkiva. Prekinitev oskrbe mišičnih vlaken v mali prsni mišici s kisikom je vezana na hitro in intenzivno prhutanje s perutmi. Poškodbe mišice se pojavljajo v treh stopnjah. Na začetku procesa je nekrotično mišično tkivo oteklo in rdečkasto rjave barve, kasneje postane zeleno do svetlozeleno. Dodatno pade tudi pH vrednost mišice. Miopatijo globoke prsne mišice je v jati zelo težko prepoznati, saj ta bolezen ne vpliva na zdravstveno stanje živali. Napake na mesu odkrijemo šele pri izkoščevanju prsi v klavnici. K zmanjšanju bolezni lahko veliko pripomore kar rejec sam in sicer s pravilno tehnologijo reje, menedžmentom na farmi ter izvajanjem ukrepov, ki prispevajo k manjšemu prhutanju s perutmi. Deep pectoral myopathy is a degenerative disease, that causes injuries of minor pectoral muscles in broiler chickens and turkeys. It is not a new disease, but it is becoming increasingly more common in broiler chickens and turkeys selected for rapid growth. It is possible that both pectoral muscles are injured but due to the inelastic fascia surrounding the muscle and its tight location next to the sternum, the minor pectoral muscle is more susceptible to disease. Minor pectoral muscle has the main role at wing flapping (up-strokes). During contraction, minor pectoral muscle increases its volume because of increased blood circulation to the muscle. The specific location of the pectoralis minor muscle does not allow it to expand during greater physical activity. The blood supply stops and muscular necrosis occurs as a result of hypoxia and muscle malnutrition Longer exposure can lead to tissue breakdown. The interruption of oxygen supply in the minor muscle is connected with fast wing flapping. The development of the disease can be divided into three stages. At the beginning the muscle tissue starts to swell. Muscle is red to brown coloured, later becomes green to light green. Also the muscle pH falls. Because the disease is not reflected in a change in the animal's health, it is difficult to detect it in a flock of animals while they are still alive. The lesions on the meat can be seen at the time of deboning in the slaughterhouse. The key to reduce the deep pectoral myopathy lies in proper breeding technology, management on the farm and actions that reduce unnecessary wing flapping. perutnina piščanci pure prsna mišica poškodbe miopatija poultry broilers turkeys pectoral muscle injuries myopathy true false false Slovenski jezik Angleški jezik Diplomsko delo/naloga 2020-09-18 07:16:32 2020-09-18 07:16:38 2022-09-01 03:58:17 0000-00-00 00:00:00 2020 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 1970-01-01 180853 29086979 10731.pdf 10731.pdf 1 4B66BB83BD2E734E0FE6A08C0C5269E7 ec973c409a8905beca262cdc9d623ea795de6db0b171d7cfbbb16c119683de60 0cdd0420-a1ba-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=135077 Biotehniška fakulteta 0 0 0