The influence of milk level on the fertility traits of cattle | Uticaj nivoa prinosa mleka na osobine plodnosti goveda
2004
Trifunovic, G., Poljoprivredni fakultet, Beograd - Zemun (Serbia) | Latinovic, D., Poljoprivredni fakultet, Beograd - Zemun (Serbia) | Mekic, C., Poljoprivredni fakultet, Beograd - Zemun (Serbia) | Djedovic, R., Poljoprivredni fakultet, Beograd - Zemun (Serbia) | Perisic, P., Poljoprivredni fakultet, Beograd - Zemun (Serbia) | Bunevski, G., Faculty of Agricultural Sciences and Food, Skopje (The Former Yugoslav Republic of Macedonia) | Nikolic, R., PKB INI Agroekonomik, Padinska Skela (Serbia)
Based on the results of the investigations the following conclusions can be made: Between oder investigated fertility traits two very important ones had low values at the herd level (insemination index 2.44 and service period 141.35 days); Level of milk production had very significant influence on the insemination index and the interval between two calvings, and the significant on the age at insemination, while the interval between two calvings and weight of the calves at birth had much less variation; The constants of deviation from the means for insemination index varied in the interval from -0.34 to 0.27, and for service period from -23.8 to 29.4 days; Comparativly with the increase of milk yield there was on increase on the number of inseminations per pregnancy and the length of service period. Since to present knowledge, the influence of the level of milk production, on fertility has not been well defined, we are of the opinion that this investigations have theorethical and practical importance in the work on increase of milk production. Accordance in work on increase of milk yield and a number of fertility traits is important for the economy of cattle production.
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