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Abstract

Until recently non-return rate 56 days (NR56) for Italian Holstein Friesian bulls had been published only for artificial-insemination (AI) organizations. Since December 2015, the information about sire fertility has been published also for the farmers. The objectives of this research were to assess ...

Author(s)
Varotto, A.; Finocchiaro, R.; Kaam, J. B. C. H. M. van; Marusi, M.; Civati, G.; Cassandro, M.
Publisher
Biotechnical Faculty of the University of Ljubljana, Ljubljana, Slovenia
Citation
Acta Agriculturae Slovenica. Supplement, 2016, No.Supplement 5, pp 94-98
Abstract

The aim of this study was to investigate factors influencing the number of daughters of Holstein bulls during the progeny testing using data provided by the Italian Holstein Friesian Cattle Breeders Association. The hypothesis is that there are no differences among artificial insemination studs...

Author(s)
Battagin, M.; Penasa, M.; Cassandro, M.
Publisher
PAGEPress Publications, Pavia, Italy
Citation
Italian Journal of Animal Science, 2012, 11, 1, pp e4
Abstract

Optimal indicators of reproductive efficiency of dairy cattle are considered, including calving intervals, periods between calving and conception, and heat, conception and pregnancy rates. Economic aspects of fertility rates in dairy cows are discussed. Factors contributing to infertility and use...

Author(s)
Cassandro, M.; Penasa, M.
Publisher
Edizioni l'Informatore Agrario Srl, Verona, Italy
Citation
Informatore Agrario, 2009, 65, 26, pp 50-52
Abstract

The study assessed the fertility and purity of sexed semen used for inseminating Holstein-Friesian heifers in commercial dairy herds. Sex-sorted semen from 4 proven Holstein-Friesian bulls and available under commercial conditions was used on nulliparous Holstein heifers reared on 61 dairy farms of ...

Author(s)
Cerchiaro, I.; Cassandro, M.; Zotto, R. dal; Carnier, P.; Gallo, L.
Publisher
American Dairy Science Association, Savoy, USA
Citation
Journal of Dairy Science, 2007, 90, 5, pp 2538-2542