The present work aimed to evaluate the effect of sea buckthorn (Hippophae rhamnoides) extract on Cryptosporidium spp. invasion in calves. Sea buckthorn is a good source of vitamins, carotenoids, organic acids and tannins. It has been reported that it possesses anti-inflammatory effect, as well as anthelmintic and antibacterial activity. Research was conducted in a dairy cattle farm ‘Mežacīruļi’ during April and July 2015. Experimental (n = 10) and control (n = 10) groups of calves were used. The experimental group received a mix of aqueous alcohol sea buckthorn leaf and berry pomace extract, administered with milk, at dose of 5 – 8 mL twice a day for 20 days. The control group received only milk. Samples were analysed with the concentration McMaster technique. The results showed that there is no significant (p is greater than 0.05) difference in the number of oocysts per gram of faeces between the experimental and control groups. It was concluded that the administration of sea buckthorn leaf and berry pomace extract had no effect on Cryptosporidium spp. invasion in calves. Studies will be continued with a higher dose of extract.

The aim of research was to analyse the spread of goats eimeriosis in Latvia, determine the structure of eimeria species as well as the efficiency of treatment of goats eimeriosis. Coprological examination of goats, carried out with Fileborn method, showed that the average level of eimeriosis influence on goats was about 25.2% and 3 dominant species of emeria such as E.arloingi, E.ninakohlyakimovae and E.alijevi. The highest level of influence was discovered to animals under 1 year of age, as with E.ninakohlyakimovae (62.5%) as the dominant specie, to animal above 1 year of age - E.arloingi (57.3%-66.7%), respectively. As the result, such preparations as sulfadimetoxine in dosage 75 mg kg*[-1) amprolsol 50 mg kg*[-1) showed high level (about 91%) of efficiency of emeriosis treatment.