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Factors affecting goat milk yield and its composition

Author

Listed:
  • G. Ciappesoni

    (National Agricultural Research Institute, INIA - Las Brujas, Uruguay)

  • J. Přibyl

    (Research Institute of Animal Production, Prague-Uhříněves, Czech Republic)

  • M. Milerski

    (Research Institute of Animal Production, Prague-Uhříněves, Czech Republic)

  • V. Mareš

    (Sheep and Goat Breeders Association (SCHOK), Brno, Czech Republic)

Abstract

The aim of the paper was to prove the accuracy of various statistical models of vari­ance analysis for estimation of systematic factors that influence milk yield and fat and protein content in dairy goats. Data on daily milk production recorded by methods AT, AC or A4 for the population of Czech White Shorthaired Goats over 1992-2002 was used for calculations. A total of 78 736 test day from 6 234 goats were analysed. Average daily milk production was 3.09 kg with 3.72% of fat and 2.84% of protein. Variability of examined traits was significantly influenced by effects of herd-year or herd-test day, litter size, parity, season of kidding, stage of lactation and the combined effect parity-year-season of kidding. The variants of model equations in which complex effects of herd-year were replaced by effects of herd-test day showed higher values of reliability for the three traits analysed.

Suggested Citation

  • G. Ciappesoni & J. Přibyl & M. Milerski & V. Mareš, 2004. "Factors affecting goat milk yield and its composition," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 49(11), pages 465-473.
    • Handle: RePEc:caa:jnlcjs:v:49:y:2004:i:11:id:4333-cjas
    DOI: 10.17221/4333-CJAS
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    Citations

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    Cited by:

    1. J. Bauer & M. Milerski & J. Přibyl & L. Vostrý, 2012. "Estimation of genetic parameters and evaluation of test-day milk production in sheep," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 57(11), pages 522-528.
    2. M. Oravcová & M. Margetín & D. Peškovičová & J. Daňo & M. Milerski & L. Hetényi & P. Polák, 2007. "Factors affecting ewe's milk fat and protein content and relationships between milk yield and milk components," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 52(7), pages 189-198.
    3. M. Oravcová & M. Margetín & D. Peškovičová & J. Daňo & M. Milerski & L. Hetényi & P. Polák, 2006. "Factors affecting milk yield and ewe's lactation curves estimated with test-day models," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 51(11), pages 483-490.
    4. A. Hejtmánková & V. Pivec & E. Trnková & H. Dragounová, 2012. "Differences in the composition of total and whey proteins in goat and ewe milk and their changes throughout the lactation period," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 57(7), pages 323-331.

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