Biotechnology in Animal Husbandry - Institut za Stočarstvo

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502 D. Nikšić et al. values of body mass of calves, calf scores and calving scores. The best ranked bulls are Erfas HB 1352 for body mass at birth and calf score at birth, and for calving score the best ranked bull is Humstreif HB B206. Subsequent to ranking of bulls, the level of concurrence between obtained ranks was tested. Table 4 presents correlation coefficients expressed by Spearman coefficient. Between bull ranks weak and positive correlation was determined in the range from 0,042 to 0,285, which enables carrying out of direct selection. It is particularly important that the correlation is positive, it means that highly ranked bull in regard to calving score can produce calves with acceptable body mass at birth. Table 4. Correlations of bull ranks Rank Rank correlation BMB CSB 0,202** BMB CS 0,042** CSB CS 0,285** In this study, many parameters of the biological test were studied for each bull individually (Table 5). By comparing these results it can be established that the total percentage of still born calves was significantly lower (1,23%) compared to results obtained by Gottschalk et al. (1983). Considering that bulls Zahlo HB 1497 and Woz HB 1433 had more than 5 % of still born calves they were negative in the biological test, and as such excluded from breeding. One of the most important factors influencing the change in the gene frequency of population is the bull semen used in artificial insemination. Therefore it is very important to establish for each bull the presence of genes which influence the equal sex ratio of the progeny. In conditions of artificial insemination, bulls which produce approximately 50% of male and 50% of female offspring are prefered. According to data used in the present study (Table 5), it was calculated that in average more female calves (54,16%) are born than males (45,84%). In the present study also the type of birth was determined (Table 5). Type of birth means number of calves born per one parturition, i.e. if the result of calving was single calf, twins or triplets. Of total number of calves 3752, there were no triplets, and number of twins was 170 which is approximately 4,76%, Also, the percentage values i.e. presence of calving scores for each bull individually were calculated. Number of calves born by Cesarean cut was exceptionally low – 5. Dams which underwent the Cesarean cut were inseminated with semen of bulls Mobi HB B112 (2), Febro B50, Marmal B333 and Milan V1023 (Table 5). Since it is known that difficult calving (dystocia) has equaly adverse effect on production of milk and meat, and knowing that body mass of calves at birth is
Results of the biological... highly hereditary, bull sires with genes for high body mass of calves should not be used for insemination of heifers and cows of easier type. Table 5. Fertility parameters for each individual bull Bull name Bull HB Calving score Comments Number of calves 5 4 3 2 MR BL Sex ratio (m-f) 1 DIETER 1427 101 87 5 9 - 4 10 39-62 2 STIER 1492 96 80 11 5 - 2 4 32-64 3 DONER B158 97 74 9 14 - 4 12 50-47 4 HUMSTREIF 206B 116 116 - - - - - 47-69 5 WEHOR 213B 109 108 - - - - - 57-52 6 ERFAS 1352 95 95 - - - - 10 49-46 7 FAO B19 92 8 84 - - - 6 39-53 8 FEST B145 85 4 81 - - - 3 34-51 9 HOFAL 1500 249 10 236 3 - 1 7 115-134 10 ZASTRADA 1453 81 61 20 - - - 6 43-38 11 WEIPORT V026 94 52 42 - - - 10 25-69 12 HORMAZ 1488 81 69 7 5 - - - 34-47 13 HORMIT 1470 92 65 14 13 - - - 48-44 14 VALBO B 279 100 86 14 - - 2 10 46-54 15 ZAHLO 1497 95 75 8 12 - 9 8 47-48 16 RAUBECK 1507 85 84 1 - - - 2 43-42 17 WOZ 1433 92 85 2 5 - 5 - 45-47 18 HODAR B68 89 1 86 2 - 1 6 42-47 19 RADEX B51 89 11 78 - - - 8 48-41 20 RAŠA V626 87 76 11 - - - - 34-53 21 VALIAN 1501 91 89 1 1 - 2 12 31-60 22 PORTO B118 111 103 7 1 - 5 14 34-77 23 FEBRO 50 81 65 14 1 1 1 - 46-35 24 HODBAL B275 89 70 19 - - 1 4 49-40 25 DION B244 100 81 19 - - - 4 53-47 26 MOOR 1504 81 68 13 - - - 2 40-41 27 MARNOLD 1508 80 67 13 - - - 4 44-36 28 HORAU 1411 96 72 16 8 - - 2 39-57 29 MOBI B112 117 95 15 5 2 2 2 60-57 30 LEO B164 128 53 57 18 - - 2 69-59 31 REPRON 1479 172 159 13 - - 2 - 71-101 32 MARMAL B333 126 116 9 - 1 2 2 57-69 33 MALINT B232 93 26 52 15 - - 2 45-48 34 MILAN V1023 92 76 15 - 1 1 14 43-49 35 VEBER B307 91 88 3 - - - 4 40-51 In Table 6, the number and percentage of calves for each individual trait are presented. By observing the results related to calf score and low incidence of 503
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UDC636 Print ISSN 1450-9156 Online
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Journal for the Improvement of Anim
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Biotechnology in Animal Husbandry 2
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Shell quality - everlasting problem
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Effect of feathering alleles (k/K +
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The effect of phase nutrition durin
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Egg quality of japanese quail ... e
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434 E. N. Uchewa et al. an average
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436 E. N. Uchewa et al. days the ex
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438 E. N. Uchewa et al. Uticaj kva
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Estimation of the relative bioavail
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Results and discussion Estimation o
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Page 150 and 151: 538 Introduction Z. Ilić et al. In
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552 J. Stojković et al. STOJKOVIĆ
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554 M. Joksimović Todorović et al
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558 Acknowledgment M. Joksimović T
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Fatty acid profile in ... Zlatibor,
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Fatty acid profile in ... Table 1.
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Fatty acid profile in ... The highe
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576 H. F. Abou-Shaara et al. Abou-S
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578 H. F. Abou-Shaara et al. of for
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580 Inner wing width 2.1 2 1.9 1.8
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582 Conclusion H. F. Abou-Shaara et
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584 H. F. Abou-Shaara et al. RAINA
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586 S. Janković et al. well and gi
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588 S. Janković et al. covariance
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590 S. Janković et al. yield can b
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592 References S. Janković et al.
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Upgrading of sugarcane bagasse by .
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Conclusion Upgrading of sugarcane b
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614 Ya. Kozhouharov et al. t.ha -1
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616 Ya. Kozhouharov et al. complete
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618 Ya. Kozhouharov et al. signific
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620 Ya. Kozhouharov et al. and with
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622 Ya. Kozhouharov et al. U poređ
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624 S. Đedović et al. almost inva
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626 Results and Discussion S. Đedo
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628 S. Đedović et al. was slightl
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630 S. Đedović et al. The environ
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632 S. Đedović et al. 68% i u tre
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Instruction for authors Papers for
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PETROVIĆ D.M., GUTIĆ M., BOGOSAVL
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