20.500.12556/DKUM-59696 Spremljanje stanja in predlog ukrepov za zmanjšanje pogostosti mastitisov pri molznicah v slovenskih čredah Monitoring of condition and program of measures for the decrease of incidence of mastitis in Slovenian dairy herds Število somatskih celic (ŠSC) je pokazatelj zdravstvenega stanja mlečne žleze, ki vpliva tudi na tehnološko kakovost mleka. Cilj magistrskega dela je bil preučiti stanje na področju ŠSC v Sloveniji in analizirati dejavnike, ki vplivajo nanj (pasma, zaporedna laktacija, stadij laktacije, leto in sezona telitve, proizvodnost in velikost črede, proizvodnost živali). Analizo smo naredili na zbranih podatkih AT4 kontrole mlečnosti za obdobje 5,5 let za celotno Slovenijo (n3,2×106 kontrol). Na podvzorcu 10 % naključno izbranih čred (n220.000 kontrol) smo statistično ovrednotili pomembnejše vplive na ŠSC. Ugotovili smo, da imajo med preučevanimi dejavniki največji vpliv nivo proizvodnosti živali, zaporedna laktacija in pasma. V splošnem velja, da je večja mlečnost (dnevna ali v standardni laktaciji) povezana z nižjim ŠSC. Največje ŠSC je bilo pri črno beli pasmi, sledili sta ji rjava in lisasta pasma ter nazadnje križanke med lisasto in pasmami, usmerjenih v prirejo mleka. Vpliv zaporedne laktacije na ŠSC je bil izrazit, ostali preučevani dejavniki (proizvodnost črede, leto in sezona telitve) pa so pokazali manjši ali zanemarljiv vpliv na ŠSC. V okviru magistrskega dela smo pregledali sisteme nadzora ter ukrepe za zmanjšanje pojavnosti mastitisov v različnih državah v Evropi in po svetu. Na osnovi pregleda literature in dobljenih rezultatov smo sestavili priporočila za zmanjšanje pojavnost mastitisov v slovenskih čredah krav molznic. Somatic cell count (SCC) is an important indicator of udder health which affects also technological quality of milk. In the thesis, it was our aim to monitor the situation on the field of SCC in Slovenia and to analyse factors influencing it (breed, parity, lactation stage, year and season of calving, herd productivity and size, cow productivity). The analysis comprised AT4 milk control data for the period of 5.5 years for Slovenia (n3.2×106 controls). A subset of 10% randomly selected herds (n220.000 controls) was used for statistical evaluation of important factors. According to our results, cow productivity, parity and breed are the most influential factors affecting SCC. Higher milk yield (per day or per standard lactation) is related to lower SCC. Among breeds, the highest SCC was observed for Holstein breed, followed by Brown, Simmental and crosses of Simmental and dairy breeds. Significant increase in SCC was recorded with parity. Other studied factors (herd productivity, year and season of calving) showed smaller or negligible effect on SCC. Within the thesis, detailed review of control systems and measures for the decrease of incidence of mastitis was done for different EU and world countries. Based on literature review and obtained results recommendations were prepared for the decrease of mastitis incidence in Slovenian dairy herds. somatske celice mastitis programi nadzora nad mastitisi somatic cell mastitis mastitis control program true true false Slovenski jezik Angleški jezik Magistrsko delo/naloga 2016-05-25 15:59:22 2016-06-01 10:31:01 2022-06-21 03:06:29 2019-07-11 11:22:25 2016 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 URN:SI:UM:DK:H1EWE2QU MAG_Flere_Damjana_2016.pdf MAG_Flere_Damjana_2016.pdf 1 45B978EF5391D3435B60F8969BF3AC9B fada3739591ed100efe113b65d0a67c7390205184ac67e36de53eaa4677b0f2e 896031ea-7c0c-11eb-bb7a-00155d0001ca https://dk.um.si/Dokument.php?lang=slv&id=92529 Fakulteta za kmetijstvo in biosistemske vede 0 0 0