Untitled - MendelNet 2013 - Mendelova zemědělská a lesnická ...

MENDELNET 2013Fig. 1 Development levels of immunoglobulin G in timeThese values can be evaluated as satisfactory in the comparison with other authors. Toman et al.(2009) indicate that the average value of Ig G in early colostrum is 73.95 gl -1 . Suchý et al. (2011)indicate that the quality colostrum should contain 30 to 80 gl -1 Ig G. Further work by Šlosárková etal. (2011) shows that good colostrum can be seen as the one, where the content of the Ig G isgreater than 50 gl -1 . If we take these values as a standard, we can consider as a high-qualitycolostrum the one we collected during our monitoring in 10 hours. Bárta et al. (2008) agrees withthis and recommends due to the decreasing ability to absorb immunoglobulins within 10 hours ofgiving birth the first intake of colostrum.If the quality of colostrum is at a high level despite the frequent health complications and eventualmortalities it is necessary to proceed directly to check the level of colostral immunity. Onepossibility is the examination of the enzyme γ-glutamyl transferase (GGT) in the blood of the calf.GGT is an enzyme which determination in the adult animals is commonly used for diagnosing liverdisease, but at high concentration they are also present in the colostrum, and if a calf colostrum isconnected, then this enzyme together with other components of colostrum is absorbed and itsactivity in the blood of calves is significantly increased. During the first days after the connectioncan reach values of 50 to 80 U / l, but given that the half-life is relatively short, its activity israpidly decreasing. The calf is well connected around the 6th activity GGT day at 8-10 U / l(Pavlata et al., 2012). Since our samples were collected between the 3. – 5. day and their averagevalue was around 18.74 ± 10,435 U / l, we can say that these results are stretched. It is necessary toindividually assess the situation in the monitored breeding. In our observation, it was found thatcolostrum produced in breeding is good and should be in compliance with all principles of rearingcalves to ensure adequate passive immunity. Follow up GGT levels in the blood of calves, butdiscovered some reserves. Some of the integral part of the care of the calves may be incorrectlyperformed and the method of administration of colostrum, the amount administered colostrum andwrong time of colostrum administration.195 | P age