POSSIBILITIES OF USING UNCONVENTIONAL METHODS AND DIETARY SUPPLEMENTS TO AFFECT WEIGHT GAINS OF CALVES

Healthy and strong individuals are fundamental in every cattle breeding. The aim of this study was to find out which of these given supplement had the best influence on calf weight gain in the early period after weaning to milk nutrition. This research was carried out in cooperation with the farm in. Calves were studied from March 2012 to February 2013. They were weaned into outdoor individual box after birth. There were added supplements into their ration in the first two weeks of life. Calves were partitioned according to the added supplement into three experimental groups and one control group. The first weight control of calves was after birth and the second weight control was at the age of thirty days. The average weight gain was calculated from the differences in these values. The best demonstrable effect was in the experimental groups with the average increment of 26.9 kilograms, then in the experimental group with the average increment of 26.1 kilograms. The last group was the Control one, there was not any change in the ration and their average increment was 23.5 kilograms. The results of the statistical evaluation was p = 0.0572 in the group, p = 0.2570 in the group and p = 0.2124 in the group versus the Control group. It can be concluded from the results of this study that calves had a positive reaction on the supplements added in the first days of life and these had a favourable effect on diarrhoea prevention. drugs and beneficially stimulate system and, in general, they have a positive effect on the physiological condition

Obsah živín a profil mastných kyselín v rôznych druhoch olejnín

The aim of this study was to determine nutrients content of 4 oilseeds (sunflower, soybean, flaxseed and rapessed) and fatty acid profile of oils obtained from the seeds. Dry matter (DM), crude protein (CP), nitrogen free extract (NFE) and fat content of the seeds were determined by standard laboratory methods and procedures. Significant (P<0.05) differences in composition of all the analyzed seeds were found. Fatty acid profile analysis was performed using the Agilent 6890 A GC machine. The analyzed oils mainly composed of polyunsaturated fatty acids (PUFA), with the exception of rapeseed oil which primarily contained monounsaturated fatty acids (MUFA). Flaxseed oil has significantly (P<0.05) proven to be the richest in PUFA content (76.46%), but on the other hand it contained the least amount of MUFA (13.47%). The saturated fatty acid (SFA) content, except for soybean oil, was below 10%. The most optimal ratio between n-6 and n-3 unsaturated fatty acids (USFA) was found in rapeseed oil (2.22:1). From the fatty acid profile of analyzed oils significant (P<0.05) differences in the content of palmitic, stearic, oleic, linoleic, arachidic, eicosenoic, behenic and lignoceric acids were detected.Cieľom práce bolo analyzovať obsah živín rôznych semien olejnín (slnečnicových, sójových, ľanových a repkových) a profil mastných kyselín rastlinných olejov získaných z týchto semien. Analýza obsahu sledovaných živín v semenách olejnín (sušina, dusíkaté látky, bezdusíkaté látky výťažkové a tuk) bola vykonaná prostredníctvom štandardných laboratórnych metód a postupov. Zistili sa preukazné (P<0.05) rozdiely v zložení všetkých analyzovaných semien. Analýza profilu mastných kyselín bola vykonaná pomocou zariadenia Agilent 6890 A GC. Analyzované oleje pozostávali hlavne z polynenasýtených mastných kyselín (PUFA), s výnimkou repkového oleja, ktorý obsahoval najmä mononenasýtené mastné kyseliny (MUFA). Ľanový olej bol preukazne (P<0.05) najbohatší na obsah PUFA (76.46%), ale na druhej strane obsahoval najmenšie množstvo MUFA (13.47%). Obsah nasýtených mastných kyselín (SFA), s výnimkou sójového oleja, bol nižší ako 10%. Najoptimálnejší pomer medzi n-6 a n-3 nenasýtenými mastnými kyselinami (USFA) sa zistil v repkovom oleji (2.22:1). V profile mastných kyselín analyzovaných olejov sa zistili preukazné (P<0,05) rozdiely v obsahu kyseliny palmitovej, steárovej, olejovej, linolovej, arachidónovej, eikosaénovej, behénovej a lignocerovej

Vliv probiotických krmných doplňků na funkční stav bachoru

The aim of this study was to determine how the administration of probiotic feed supplements affects selected parameters rumen environment of cattle, how it impresses the basic chemical and biological processes in the rumen, and also to check their influence on the total digestibility of feed in the cannulated cattle. For the experiment two adult cows of Aberdeen Angus breed with implanted permanent cannula were used, whom probiotics Bifidobacterium sp. were administered daily and subsequently the degradability of the organic matter was determined by the in sacco method. From the samples of rumen fluid, the amount of ammonia, volatile fatty acids, ciliates and pH were analyzed. The impact of probiotics has not been demonstrated in testing the influence of probiotics on the different variables with fixed effect of an individual. When testing the influence of probiotics without the effect of an individual, in the linear model, obtained data of acetic and butyric acid were the best. In their dependence, numbers of protozoa were increasing. However, only two experiment individuals were tested, a strong effect of the individual was found. These results indicate that the effect of probiotics Bifidobacterium sp. on the functional state of the rumen is low.Cílem této studie bylo zjistit, jak podávání probiotických krmných doplňků ovlivňuje vybrané parametry bachorového prostředí, jak působí na základní chemické a biologické procesy v bachoru, a také jejich vliv na celkovou stravitelnost krmiva kanylovaných krav. V pokusu byly použity dvě dospělé krávy plemene Aberdeen-angus se zavedenou permanentní kanylou, kterým byla denně podávána probiotika Bifidobacterium sp. a následně stanovena degradovatelnost organické hmoty metodou in sacco. Z odebraných vzorku bachorové tekutiny bylo analyzováno množství amoniaku, těkavé mastné kyseliny, nálevníci a pH. Při testování vlivu probiotik na jednotlivé proměnné, s pevným efektem jedince nebyl vliv probiotik prokázán. Při testování bez efektu jedince vyšla v lineárním modelu nejlépe popisujícím má data kyselina octová a máselná. V jejich závislosti se zvyšovaly počty protozoí. Jelikož byli použiti pouze dva pokusní jedinci, je zde silný efekt jedince. Z těchto výsledků vyplývá, že vliv probiotik Bifidobacterium sp. na funkční stav bachoru je nízký. Tyto výsledky mohly být ovlivněny nízkým počtem replikací aplikace probiotik a také nízkým počtem zvířat