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Vlivy výšky hřbetního tuku při zapouštění na reprodukční ukazatele prasnic
VALEŠKOVÁ, Denisa
The bachelor thesis topic is about rating of a sows reproduction attributes due to the backfat thickness during fertilization. In the academical part of this thesis are described primary factors which affects sows reproduction. The aim of thesis is evaluation of each reproduction factor affecting sows reproduction at the breeding farm. Data was collected in year 2019 from 1 865 pcs. gilts and sows stabled at the breeding farm. The measurement of the backfat thickness in the monitored group of pigs is done approximately one week before fertilization after weaning of sows to the separated cages. Best fertilization results sows and gilts achieves at the limits of measured values of the backfat thickness. In the monitored group, sows in average reach 17,2 piglets per birth that means 41,3 of all piglets born per year. The most live-born piglets from sows are in range from 8 mm to 18 mm and 18,1 piglets in average. The most live-born piglets from gilts are in range from 10 mm to 14 mm, which is lower values for backfat thickness, and 16,5 piglets in average.
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Influence of condition sows on their subsequent reproductive performance
ŘEZNÍČKOVÁ, Lenka
The aim was to assess the effect of condition of sows on subsequent reproductive performance. Fitness was assessed based on subjective evaluation using a five-point scale from 1 to 5. Rating condition was performed in a group of around 162 pieces by the current cast piglet always for the reproductive period before birth and before weaning, at intervals during 2009 and 2010. The company has been annually monitored and backfat thickness of sows selected for the period before birth and before weaning. The results of subjective assessment of condition of sows found that sows in the measured density reached an optimal condition in the range of 3,5 to 4 points. The best condition in sows before parturition was on the 3rd, 4th and 7 litter. Before weaning sows were fit from 2,5 to 3,5 points. In the period before weaning reached 450 sows condition 3 with an average of 13,14 pieces of piglets born to 10,21 piglets born alive. In assessing the data on the height of back fat measured now been found that the examined sows ranged average amount of fat in the range of optimum condition for each reproductive period before parturition 19,85 mm, 16,52 mm before weaning, and the difference was 3,33 mm. The statistics were revealed in the amount of fat before birth dependent on the number of piglets (p=0.02), which is statistically significant indicator. At the height of the fat before weaning (p=0.65), the relationship is statistically insignificant. The biggest statistical dependence (p=0.00) difference was found in fat, which tells us that with increasing height of fat before birth increases the amount of fat before weaning. In the last part of the data on the reproductive performance compared to those undertaking trade mark under the key ?reproduction?. It was found that the company has a prejty good level of breeding, despote some fluctuatins in farming losses as a percentage of piglets and sows pregnancy. The company reached the average (between 2008 and 2010) in weaned piglets per sow and year of 21,23 pc, live born piglets per sow and year of 25,37 pc at 2,33 litters per sow per year, but has a large loss of suckling piglets , an average of 10,32 % and 3,78 % rearing, the percentage of sows insemination was 80 % of the company, should be min. 85 %. Due to deteriorating indicators monitored the implementation of an enterprise for restocking.
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