20.500.12556/DKUM-44747 PRIMERJAVA RASTNIH IN KLAVNIH LASTNOSTI BIKOV LISASTE PASME PO PROIZVODNEM TIPU COMPARISON OF GROWTH AND CARCASS CHARACTERISTICS OF SIMMENTAL BULLS BASED ON PRODUCTION TYPE Cilj raziskave je bil analizirati vpliv proizvodnega tipa (ali proizvodne usmeritve) očeta na lastnosti rastnosti in klavne kakovosti potomcev lisaste pasme iz progenega testa. Glede na proizvodni tip očeta, ki je določen na osnovi skupnega selekcijskega indeksa, so bili biki razdeljeni v tri skupine: mlečni, kombinirani in mesni tip. V raziskavo je bilo vključenih 800 potomcev 64 bikov očetov. Zajeli smo 495 potomcev 39 bikov kombiniranega tipa, 200 potomcev 17 bikov mlečnega tipa in 105 potomcev 8 bikov mesnega tipa. Živali smo spremljali od vhlevitve živali na testno postajo (pri starosti 2,3-2,5 meseca) do zakola (pri starosti 17,8 -18,5 mesecev). V testnem obdobju so se meritve izvajale vsaka dva meseca (skupaj sedemkrat). V vsakem terminu smo beležili kazalce rastnosti (starost, maso, višino vihra, višino križa in dnevni prirast), ob zakolu pa smo določili še klavno kakovost ( maso toplih polovic, klavni izkoristek, globino prsi, dolžino trupa, neto prirast, indeks konformacije ter oceno mesnatosti in zamaščenosti po EUROP klasifikaciji). Rezultati raziskave so pokazali, da proizvodni tip očeta ne vpliva na lastnosti rastnosti in klavne kakovosti potomcev. The aim of the present study was to analyse the effect of production type of bull on growth rate and carcass quality of Simmental bulls (male offspring) from the progeny test. According to the production type, which is determined on the basis of total selection index, bulls were divided into three groups: dairy, meat and combined type. The study comprised 800 male offspring of 64 bulls: offspring (n=495) of 39 bulls of combined type, offspring (n=200) of 17 bulls of dairy type and offspring (n=105) of 8 bulls of meat type. Animals were monitored from housing into the station (at the age of 2.3 to 2.5 months) until slaughter (at the age of 17.8 to 18.5 months). In the test period, measurements were carried out every two months (altogether seven times). In each period, growth rate indicators (age, weight, withers height, rump height and daily weight gain) were recorded. At slaughter, carcass quality (warm carcass weight, slaughter yield, chest depth, carcass length, net daily gain, conformation index, conformation and fatness according to EUROP classification) was also analysed. Our results showed no effect of production type of bull on growth rate and carcass quality of their offspring. biki lisasta pasma proizvodni tip rastnost klavna kakovost bulls Simmental breed production type growth rate carcass quality true true false Slovenski jezik Angleški jezik Diplomsko delo 2014-06-18 22:31:26 2014-06-30 09:54:34 2022-05-13 03:07:42 2021-05-01 03:21:14 2014 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 URN:SI:UM:DK:ZFDPK0DZ UNI_Breznik_Vesna_2014.pdf UNI_Breznik_Vesna_2014.pdf 1 6219EFEFC211CD3BC96F534692F09899 549e0e11db4412dd2933af6828b0b987af18ecde54cf57f2e8960f37304f79f5 ed6479c5-7c0a-11eb-bb7a-00155d0001ca https://dk.um.si/Dokument.php?lang=slv&id=64387 Fakulteta za kmetijstvo in biosistemske vede 0 0 0