The master´s thesis analyzes factors impacting on efficiency of sows and mortality of piglets. The data evaluated in this thesis comes from 54 sows and 513 piglets they farrowed. It focuses on impact of particular factors on length of meantime, order of litters, birth weight of piglets, litter size, hybrid combination and individuality of the boar. Longer meantime have shown a trend of increased number of stillborn pigs and higher parity has shown shortening of meantime. Statistically highly demonstrable difference (p < 0,01) can be seen between the sixth and higher litters and the third litter. Statistically demonstrable difference can be seen between the fifth and the third litter (p < 0,05). Higher birth weight has shown decreased losses of piglets. At the same time a negative correlation has been observed between the litter size and the birth weight, resulting in proving a statistically highly demonstrable difference in the number of all born, live born and weaned piglets between the group of the heaviest subjects and the groups of lighter ones. While observing differences in hybrid combinations (CLW x CL) x CLW sire line and (CLW x CL) x D, considerably higher losses of piglets have been observed in the first group and while observing the impact of individual boars, notable differences in weight and losses of young pigs have been observed.
| Identifer | oai:union.ndltd.org:nusl.cz/oai:invenio.nusl.cz:430167 |
| Date | January 2017 |
| Creators | Kováčiková, Vilma |
| Source Sets | Czech ETDs |
| Language | Slovak |
| Detected Language | English |
| Type | info:eu-repo/semantics/masterThesis |
| Rights | info:eu-repo/semantics/restrictedAccess |
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