20.500.12556/DKUM-11807 PRIMERJAVA PROIZVODNIH LASTNOSTI KRAV ČRNO BELE PASME RAZLIČNEGA IZVORA Comparison of production traits of Holstein cows of different origin Cilj preučevanja je primerjava proizvodnih lastnosti krav črno bele pasme med seboj glede na izvor. Skupno je bilo tako vključenih 817 brejih telic, od tega 461 telic črno bele pasme slovenskega izvora (SLO) in 98 telic iz Nemčije (NE), 155 telic iz Nizozemske (NZ) in 103 telice iz Danske (DK). Uvožene živali so bile pripeljane v Slovenijo kot breje telice in dosegle od 1. do 9. laktacij. Preučevali smo lastnosti, vezane na prirejo in dolgoživost živali. Vse živali so telile v obdobju med 27. in 30. mesecem starosti, značilno najmlajše so telile živali NZ izvora (p < 0,05), med živalmi SLO, DK in NE izvora ni bilo razlik (p ≥ 0,05). Značilno najhitreje so bile izločene SLO krave, ki so v povprečju dosegle 3,6 laktacij in 23 kg mleka na molzni dan. Krave se med seboj niso značilno razlikovale v življenjski pireji mleka, maščob, beljakovin, količini mleka na molzni dan, št. laktacij, št. laktacijskih dni, št. dni od prve telitve do izločitve, št. dni od rojstva do izločitve, v dobi med telitvama in v dobi presušitve (p ≥ 0,05). Največjo življenjsko prirejo so dosegle DK krave z 29816 ± 1904 kg mleka, prav tako so imele najvišje povprečne količine beljakovin, maščob in mleka v standardnih laktacijah. Aim of this study was to compare productive traits of Holstein cattle among themselves based on origin. Data for this study involved 817 animals, from Slovenia (SLO) n = 461, from Germany (NE) n = 98, from Netherlands (NZ) n = 155 and from Denmark (DK) n = 103. These animals were imported to Slovenia as pregnant heifers and achieve from 1 to 9 lactations. We investigated traits based on productivity and longevity. They have calved between 27 and 30 months of age, NZ heifers were statistically significant the youngest (p < 0.05) among SLO, DK and NE were no statistic significant differences (p ≥ 0.05). SLO cows were statistically significant most rapidly culled but they achieve an average of 3.6 lactations and 23 kg of milk per milking day. Among production traits such as lifetime milk, fat and protein yield, average amount of milk per milking day, no. of lactations, no. of lactation days, no. of days from first calving to culling, no. of days from birth to culling, calving interval and dry period were no statistically significant differences (p ≥ 0.05). DK cows achieve the highest lifetime production with 29816 ± 1904 kg of milk. The best average protein and milk fat in standard lactations was also achieved by DK cows. krave molznice dolgoživost proizvodne lastnosti dairy cattle longevity production traits true true false Slovenski jezik Angleški jezik Diplomsko delo 2009-09-18 08:59:21 2009-10-19 11:58:38 2022-04-12 00:13:34 2022-04-18 03:28:17 2009 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 URN:SI:UM:DK:X91EIGAI VS_Virk_Tadej_2009.pdf VS_Virk_Tadej_2009.pdf 1 1FDB271E7FB636664FD018B578869C34 27466f3a60b79f6eaf32105fb96e1ff917ca57f5132462533ff87e77f7da2377 3afba5a5-7c03-11eb-bb7a-00155d0001ca 20.500.12556/dkum/6c95ba15-0da4-443b-8791-72086c6edce6 https://dk.um.si/Dokument.php?lang=slv&id=10829 Fakulteta za kmetijstvo in biosistemske vede 0 0 0