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Analýza vlivů ovlivňujících délku intervalu od odstavu do zapuštění u prasnic
BOUŠKOVÁ, Renata
The aim of the thesis was to assess and evaluate effects on weaning to service interval (WSI) in sows. On the sow farm, where the observation took place, were on average born 15.5 of all piglets/1 litter, of which 14.6 piglets were live born. The average length of the weaning to service interval in sows was 5.6 days. The most common length of WSI was 4 and 5 days (83.3 % of litters). In CLW sows (5.9 days) was found that the weaning to service interval was 0.4 day longer than in CLWxCL hybrid sows (5.5 days). With the rising parity number, the length of WSI declined. There was proven a difference of 1.2 days (p < 0.05) between the parity 1 (6.0 days) and the parity 5 (4.8 days). In terms of parity number and sow's genotype, the largest difference was recorded in the parity 1. In hybrid sows CLWxCL was WSI (5.7 days) 1.3 days shorter compared to CLW sows (7.0 days). The highest number of all piglets born was found in sows in the parity 3 (16.1 piglets), while the most live-born piglets were recorded in sows in the parity 2 (15.0 piglets). The shortest WSI (5.3 days) was in the winter and the longest WSI (5.9 days) in the autumn. The highest number of all born piglets was born to sows with the WSI length of 0-3 days (17.5 piglets). With increasing WSI, the number of all piglets born decreased. The lowest number of all born piglets (15.1 piglets) was in sows with WSI length of 6 days. In the weaning to service intervals longer than 6 days, the number of all piglets born increased.
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Hodnocení parametrů plodnosti prasnic ve vybraném chovu
MICHŇOVÁ, Iveta
The aim of the thesis was to analyse the reproduction performance of sows achieved in selected breed. In the reporting period were on average born 12.6 total-born piglets, of which 11.7 live-born piglets. The highest number of live-born piglets was born of hybrid combination sows (CLWCL)CLW, 12.0?3.1; compared with sows CLWCL (11.8 ? 3.0) and CLW (11.6 ? 3.2). The most of live-born piglets were demonstrated from 3rd and 4th parity (12.6 ? 3.1 and 12.5 ? 3.1). Gilts at the age of first mating at 230 to 250 days, reached a higher number of live-born piglets (9.9 ? 2.8) compared to gilts with the age of first mating to 229 days (9.5 ? 2.5). Difference of 0.4 piglet was statistically highly significant. Sows with gestation length to 114 days had 1.3 piglets more (12.0 ? 3.1) than sows with gestation length 115 days or more (10.7 ? 3.1). Difference of 1.3 piglets was statistically highly significant. Sows weaning-to-conception interval within 4 days showed a higher number of live-born piglets (12.3 ? 3.0) than sows with 5 days or longer (11.4 ? 2.9). Difference of 0.9 piglet was statistically highly significant. Effect of farrowing interval (132145, 146160 and 161200 days) on the number of live-born piglets (12.1 ? 3.1; 12.2 ? 3.1 and 12.2 ? 3.2) was not statistically significant.
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Analýza plodnosti prasnic ve vybraném chovu
KUBALOVÁ, Markéta
The goal of the thesis was to analyze reproductive performance of sows in a selected breeding facility during a three-year period. 602 litters of the breed Czech Large White pig (CLW), 7 632 litters of the Czech Large White the Czech Landrace pig (CL) and 397 litters of the Czech Landrace Czech Large White were included in my observation. The average number of born piglets 15.43 was reached in the basic set of sows, out of which there were 14.25 live-born piglets. The highest number of all born piglets was found in CL CLW (16.25 pcs), followed by CLW (16.03 pcs) and CLW CL (15.34 pcs). The highest number of live-born piglets was found in CLW (14.51 pcs), then with a slight gap followed CL CLW (14.36 pcs) and the lowest number was found in CLW CL (14.22 pcs). The average age at first conception of sows was 235.7 days. Sows, younger than 229 days at first conception gave birth to 0.39 piglets more than sows of the age 230-250 days at first conception (13.42 or 13.03 piglets). The average gestation length was 115.7 days. More piglets were born to sows with gestation length shorter than 115 days, than to sows with gestation length 115 days and more (14.55 or 14.18). The difference of 0.37 piglets was statistically confirmed as highly relevant. The average length of weaning-to-conception interval was 5 days (4.97). More piglets (by 0.44) were born to sows that were serviced within 4 days after weaning, than to sows serviced within 5 and more days (15.03 or 14.58). The difference was confirmed as statistically highly relevant. The average length of farrowing interval was found 152.9 days. Sows were categorized into three groups based on this interval, 132145 days, 146-160 days and 161200 days. Most piglets were born to sows with farrowing interval 146160 days (14.58) and least to sows with farrowing interval 161200 days (14.51).
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