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Zhodnocení růstu jehňat plemene lacaune
Šínová, Jana
The aim of this study was evaluated the growth of lambs Lacaune dairy breed. Monitoring was carried out on the family farm in Brníčko near Zábřeh na Moravě. Altogether, the study includes 168 lambs. The evaluation of growth was determined by live weight of lambs at birth, a tweaning (40 days of age) and 100 days of age. All these live weight was observed average daily gain at intervals of 0 - 40, 40 - 100, 0 - 100 days of age. The growth rate of lambs was evaluated in relation to sex, litter size, maternal age and ram used in reproduction. It was found that maternal age had a highly signifiant effect on birth weight and signifiant effect on live body weight at 100 days of age. Sex lambs had a signifiant effect on all tracked live body weight and average daily gain among birth weight. Litter size had signifiant effect on all tracked live body weights. Line of ram used in reproduction had no signifiant effect on growth or average daily gain of lambs.
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Analysis of birth weight and losses in piglets
DULOVCOVÁ, Ivana
The aim of the theses was to evaluate the characteristics of reproduction of sows with focus on birth weight of piglets and losses of piglets. Forty-two litters were studied. The average number of piglets born alive was 12.38. The average percentage of stillborn piglets per one litter was 5.43, the percentage of mortality until the weaning was 27.8. The average birth weight of piglets born alive was 1.29 kg. Most of the piglets (51%) fell into 1.051.5 kg category with an average weight of 1.30 kg. The relationship between number of piglets born alive and their birth weight was r = -0,121. The average weight of stillborn piglets was 1.08 kg. The gestation period of gilts was 0.28 day shorter than the sow gestation period and they gave birth to 4.03 fewer piglets born alive than sows. The gilts showed a higher proportion of piglets' mortality until the weaning (the difference was 3.46%). The sows showed higher average weight of piglets born alive (the difference was 0.19 kg). The sows with longer gestation period (114 days) gave birth to 0.15 piglet born alive more than the sows with shorter gestation period (less than 113 days). The sows with shorter gestation period showed smaller proportion of stillborn piglets from all born piglets, the sows with longer gestation period showed smaller proportion of piglets' mortality until weaning. In deliveries longer than 8 hours 10.37 piglets were averagely born alive, which was 2.52 piglets less than for sows with deliveries shorter than 6 hours, or 2.6 piglets less than for the sows with deliveries from 6 to 8 hours. In deliveries shorter than 6 hours was the highest number of stillborn piglets. The highest mortality of piglets was until 24 hours after a birth (33%), 28% of piglets died the second day, 12% died the third day and 9% the fourth day. The mortality decreased noticeably from the fifth day after the birth.
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Influences which have effect on the weight of lambs in the age of 100 days of breed texel
STRNAD, Ladislav
The aim of this bachelor thesis was to evaluate chosen influences which have effect on the weight of lambs in the age of 100 days of breed texel. The evaluation was done in 2014 and 283 lambs was include in it. The observed effects were sex, line of ram, the month of birth and litter size of lambs. From the point of view of the influence of sex lambs male achieved the average weight of 33,7 kg in the age of 100 days and female 30,9 kg. From the point of view of the line of ram lambs of line TONDA (38,7 kg) and lambs of line TARTE (34,1 kg) achieved the highest values. The lambs of line TREFLE (30,1 kg) and lambs of line TUTU (30,1 kg) achieved the lowest values. From the point of view of the month of birth the lambs born in June (34,7 kg) and in March (33,1 kg) achieved the highest values. The lambs born in April achieved the lowest values (31 kg). From the point of view of the litter size singles achieved the highest values (34,8 kg). The lambs of triplet achieved the lowest values (29,7 kg). At the observed effects was found that the influence of sex, the month of birth, the line of ram and litter size had an effect on the weight of lambs in the age of 100 days.
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Zhodnocení růstu a základních ukazatelů jatečné hodnoty jehňat šumavské ovce a jejich kříženců
Koutná, Svatava
This dissertation was aimed at evaluation of growth and basic indicators of carcass value of sumavska sheep lambs and its crossbreeds with texel sheep. In all there were 79 lambs monitored of following genotypes; S100, S 50 T 50, S 75 T 25, T 75 S 25. This research was executed at a family farm in town of Proseč. In scope of this evaluation of lamb growth live weight at birth, in 70 days of age, 100 days of age and before slaughter was observed. Investigation was carried in terms of observation (for full monitored file) effect of genotype, gender, litter size, genotype`s interaction vs. gender and genotype`s interaction vs. litter size on growth ability indicators, more precisely on live weight and lambs` daily weight gain. Genotype impact, gender, litter size, genotype`s interaction vs. gender and genotype`s interaction vs. litter size had highly provable influence on most of monitored live weights. With regards to the daily weight gains, highly provable influence of the above mentioned indicators on majority daily weight gains was recorded here also. Results of check slaughter show that genotype had provable influence on most carcass value's monitored indicators. Highly provable genotype effect was recorded on live weight before slaughter, slaughter age, slaughter ready body weight, skin ratio, kidney ratio and flesh ratio. Conclusive impact was recorded on yield and kidney weight. To conclude this from genotype`s perspective, the highest gain was recorded on S 75 T 25 and the lowest gain on T 75 S 25. From carcass value point of view, relatively best results were ascertained for crossbreeds S 50 T 50.
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Analysis level of reproductive qualities of pigs in the chosen breeding.
ŽIVČÁKOVÁ, Jana
The objective of the thesis was the analysis of reproductive traits of sows. Data from the years 2009?2011 were obtained in the company conducting production herds. The highest number of piglets born alive per one sow a year (26.8) was reached in 2011. The highest number of weaned piglets (25.6) per a sow was obtained in 2010. By shortening farrowing index in a monitored three-year period the number of births increased from 2.29 to 2.35. We found out that sows covered at older age gave birth to more piglets born alive. Concerning total number born piglets the difference between sows covered in more than 246 days and sows covered in the age interval of 225?246 days was 0.14 piglets, or, as the case may be, with sows covered in 203?224 days the difference was 0.18 piglets. Sows covered in less than 203 days gave birth only to 10.67 total number born piglets. Most total number born piglets were found at the sixth litter (13.14), followed by the fourth litter. The fourth litter brought most alive-born piglets (12.58) and differed from the third litter only slightly. Most piglets survived at the third litter (11.61). The relation between all piglets and those alive-born was statistically highly conclusive 0.859+++. The highest number of total number born piglets was reached with sows which were covered 5 (12.84) or 6 days (12.79) after weaning.
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