The goal of this thesis is the analysis of the milk yield on a particular organic farm breeding goats. The milk yield was monitored and evaluated in the control range 2015-2017. The data was obtained from the yield checks carried out by SCHOK (Association of Goat and Sheep Breeders) and from the farm's own records. The testing was run on 526 White Shorthaired goats yielding 760,08 kg of milk for standard lactation with a fat content of 3.4% in 2017. There has been a trend of rising milk yields on the farm since 2015 when the yield reached 627.77 kg of milk with a fat content of 3.02%. This trend was statistically highly potent (P<0.01), as well as the protein content (%) in milk which has dropped from 2.97% to 2.73% during the the same period of time. In addition, 184 goats on the 1st lactation and 177 goats on the 2nd lactation belonging to 16 father lines were evaluated. These lines were compared to each other by individual milk yield indicators. In the lactose content (%) the Krasus line dominated (4.83%) which showed statistically significant difference (P<0.05) compared to the Molch and Emil lines whose lactose content was the lowest (4.51% and 4.53% respectively). The 2nd lactation testing evaluated the number of somatic cells in the milk, with an average value of the group monitored being 1543.12 thousand of somatic cells per one mililiter. The highest number of the SC was measured in the Bera line (4437.17 thousand SC/ml) with statistical conclusiveness (P<0.05) compared to Bernd (758.5 thousand SC/ml), Curt (858.42 thousand SC/ml), Zub (444.24 thousand SC/ml), and Zuzek (696.77 thousand SC/ml) lines which reached the lowest values. In other observed milk yield parameters, the lines on both lactations showed marked differences in the values achieved but they were not statistically proven.
| Identifer | oai:union.ndltd.org:nusl.cz/oai:invenio.nusl.cz:426973 |
| Date | January 2018 |
| Creators | Berková, Veronika |
| Source Sets | Czech ETDs |
| Language | Czech |
| Detected Language | English |
| Type | info:eu-repo/semantics/masterThesis |
| Rights | info:eu-repo/semantics/restrictedAccess |
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