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Evaluation of reproductive performance in selected breeding of sheep
BRÁZDOVÁ, Veronika
The aim of this thesis was to evaluate the reproductive performance over the period from 2007 to 2010 in selected Suffolk sheep. The evaluation was carried out on the basis of records kept in the selected breeding sheep at Agris Markvarec s r.o. and on own observations. During the reporting period was evaluated 1115 ewes, which were monitored the following parameters such as fertilization, fertility, intensity, rearing of lambs, infertility, ewes lambing, percentage of sheep abortions, stillborn lambs, mortality, percentage of breeding lambs and percentages of sheep by percent occurrence of the cast. There was also observed age structure of the ewes, the dependence of age on fertility of ewes and the effect of father mother on her fertility. In the observed breeding was found the following results, which are presented as an average over the reporting period, so the percentage of fertilization is 91.2%, fertility 145.2% and rearing 81.3%. The percentage of idleness of sheep is 8.8%, which directly affected the percentage of the intensity, which is 118.3% and the lambing percentage, which ranks lower value 81.2%. A relatively high percentage was achieved in postnatal mortality, which is 11.4%. Percentage of sheep abortions in the average is 5.4% and the percentage of stillborn lambs is 4.9%. Breeding lambs 92.3%. The effect of age of ewes on fertility was confirmed by F - test for the significance level of p ? 0,05. Subsequent testing has been demonstrated median significant differences between groups of ewes aged 2 and 3 years and between age groups 3 and 5 years. On the same level of significance was also demonstrated effects of father mother on fertility of mother and on the basis of the results was found that the lowest average fertility rates in the ewes, their father is out of line Yog (110%) and conversely the highest fertility rate (170,8%) is achieved for mothers whose father is out of line Harald. Further testing, which was focused on the effect of age of breeding ewes and breeding year in terms of the father´s line on the mother's fertility wasn´t demonstrated.
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Analysis of utility and fertility of a cow herd of Holstein breed
ZETKOVÁ, Jana
The point of the work was to make an analysis of milk production an and fertility and to attest dependence of milk production and fertility in the holstein cattle herd. Background materials were acquired especially from milk production control and cattle accompanying documents. Data of 251 dairy cows were worked up. Big problem of the high producing dairy cows is the low fertility. That is why the work was focused on analysing of milk production and fertility index. Service period, insemination interval and interval were analysed out of the fertility index. Milk production, proteins and fats percentage content represent the efficiency. The results show the high selection of cows out of the herd. It result shows from a number of included heifers. Most frequent reasons of selection are health condition, low milk efficiency and fertility disorders. Average efficiency in control increases. On the other hand the protein contest in milk is weak. A breading aim 3,3% was achieved only in year 2003 (3,32%). Milk production increases from the first to the third lactation. Milk production is decreasing from the fourth lactation. Fat percentage content increases to the third lactation, then it stagnates. The protein content goes down with number of lactation. Required interval length to 400 days is exceed in all lactation. Service period is to high regardless of lactation number. Insemination interval increases to the third lactation, then it decreases, but it is nonconforming all the time. The results show that fat and protein content decreases with milk production. The high milk production was reached on cows calved in autumn (8920,77 kg) and in winter (9231,48 kg). Data of cows calved in spring and in summer are almost the same. The results evidence general rule, that fertility decreases with increasing milk production.
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Performance and reproduction of Holstein cattle
KAMENÍKOVÁ, Jana
The aim of thesis was to analyze the milk efficiency and fertility of dairy cows of Holstein cattle breeding under intensive conditions. The examinations were made in the agricultural company ZDV Krchleby, a.s. during the year of 2007 to 2009. In total, 147 dairy cows were used for observation including 35 Holstein dairy cows (100% H, R 100%), in a group called - H1, 70 Holstein cows crossed with Czech spotted cattle (H 75 - 87%, R 75 - 87%) in group - H3 and 42 Holstein cows crossed with Czech spotted cattle (H 50 - 74%, R 50 - 74%), in group - H4. Furthermore, the basic data set was divided according to lactation into four groups: 1st lactation, 2nd lactations, 3rd lactations, 4th and more lactations. The main indicators for evaluation of the milk efficiency were the: milk quantity (kg), amount of fat in the milk (%), production of the fat in the milk (kg), amount of protein in the milk (%), production of protein in the milk (kg), content of lactose in the milk (%), persistency of lactation and lactation duration (in days). In terms of fertility, the following factors were evaluated: the cow?s age at first birth (in days), insemination interval (in days), service period (in days) and the periods between births (in days). The cows in the first group milked on average of 8945.03 kg of milk, the amount of fat was 3.66%, the content of protein was 3.32%. Cows in the second group milked an average amount of 8186.55 kg of milk, the content of fat was 3.77%, the amount of protein was 3.33%. The third group milked an average amount of the milk 8649.05 kg, the content of fat was 3.58% and the amount of protein was 3.26%. Differences between these groups were not statistically significant. From the reproductive indicators, statistically, the only most significant difference was the time in between births. The longest period in between births was measured in the first group - 576.22 days, in the second group - 487.38 days and in the third group - 480.95 days.
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Evaluation milk yield and fertility cows in drove of Bohemian Spotted cattle
ZADÁKOVÁ, Martina
The aim of this work was evaluation of milk yield and fertility of cows´ groups, which were formed on the basis of milk production quantity, age, a calving season, pedigree, body framework of cattle and a level of body condition. There were evaluated results at 690 cows in years from 2004 to 2007. The foundation dates about the yield and the fertility of animals were abtoined by check of the yield. The body framework of cattle and condition were investigated with regular month intervals during the year 2007. Body condition was considered in an interval from 1 to 5 points with accuracy of 0,25 point. During the watching years milk yield increased from 6 616 kg to 8 507 kg. Milk components reduced with increasing milk yield, when the contents of fat was gradually reduced from initial 4,2 % to 3,87 %. The contens of proteins was also reduced from 3,5 % to 3,37 %. It was investigated that the decline of body condition after calving was connected with extension of insemination interval and service period by six days and its increase with shortening of interval and SP by four days. The higher milk yield (8 281 kg) but at the same time longer service period was investigated with cows of bigger body framework (the hight in back from 145 to 150 cm). During the evaluation of effect breeding groups (C1, C2, C3) to fertility weren´t investigated more important differences among the groups. But the breeding groups influence the hight of milk yield, ehen the C3 group (share of dairy breed more than 50 %) has the highest milk yield (7 866 kg). The highest milk yield was investigated with cows at the second lactation period (7 900 kg), at the third lactation period was almost on the same level (7 886 kg)and in the following lactation periods the quantity of milk gradually fell down. The examination of lactation curve courses at cows´ group with a different level of yield indicated , thet the higher care in a herd is devoted to milk production than to cows´ fertility. The length of service period at the highyield cows was as 200 days.
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Performance and fertility comparison of the Czech Pied cattle versus Holstein cattle with respect to technology of breeding
ŽÁČKOVÁ, Jindřiška
The observation of cattle breeding before and after monitoring resuets of stable technology from stanchion housing to free box housing with bedding was procceded from 2003 to 2006 in agricultural cooperative Netřebice. There were observed 169 dairy cows, 120 pieces of Holstein and 49 pieces of Czech Pied cattle. The influence of technology change was specified on the basis of milk testing and fertility results. Milk performance in free box housing system reached higher level than in stanchion housing. Reproduction parameters reached mostly better figures in the free box housing.
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The evalution of reproduction parametres in chosen herd of sheep
BENEŠOVÁ, Kristýna
It has been observed the breed herd of Texel sheep in the foothills area of Orlické mountains in the year 2005-2008. The base of herd was consisted of 374 ewes, 575 lambs and 6 rams in total. These parametres of reproduction {--} conception, fertility, rearing, empty ewes, abortions, lambing, stillborn, death after born, were monitored at ewes. For the parametres of reproduction at ewes were found significant effects of ewe´s age and ram´s line.
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Reproductive immunology
Ulčová-Gallová, Z. ; Madar, J. ; Nouza, K. ; Kinský, R. ; Pěknicová, J. ; Mardešic, T. ; Tlaskalová, Helena ; Panzner, P. ; Cinek, O. ; Šnajderová, M. ; Křižanovská, K. ; Bouše, V. ; Sedláček, D. ; Rokyta, Z.
Reproduction immunology in Pilsen is focused on pair withreproductive deficiency.
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