Factors affecting goat milk yield and its composition

G. Ciappesoni, J. Přibyl, M. Milerski and V. Mareš
Additional contact information
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

Czech Journal of Animal Science, 2004, vol. 49, issue 11, 465-473

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.

Keywords: Czech White Shorthaired goat; fat; protein; lactation curve; test day (search for similar items in EconPapers)
Date: 2004
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Citations: View citations in EconPapers (4)

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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlcjs:v:49:y:2004:i:11:id:4333-cjas

DOI: 10.17221/4333-CJAS

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