Abstract

We examined the efficiency of probiotic “Sporotermin” and “A2” for increasing the productivity and physiological status of the rabbits. The studies were conducted on a crossbreed population of rabbits (Soviet chinchilla and New Zealand red) at the age of 45 days, divided into control and experimental groups of 15 heads in each by the method of pairs-analogues in the vivarium of the faculty of veterinary medicine and animal husbandry technology of the Voronezh State University in 2017-2018. Rabbits of group 1 (control) received all-mash without additives, rabbits of group 2 and 3 additionally received probiotic preparation “Sporotermin” in a dosage of 1.0 g/kg of feed (rabbits of group 2) and “A2” in a dosage of 0.6 g/kg of feed (rabbits of group 3). Upon reaching the age of 120 days, the live weight of all groups exceeded 3.0 kg, while rabbits of the 2nd group had an advantage over individuals of the 1st and 3rd groups by 295.0 g (9.10 %) and 115.0 g (3.36%). At the end of the experiment (120 days) in animals of the 2nd and 3rd groups there was a significant increase in the amount of total blood serum protein by 5.59 and 3.92% (P>0,95), respectively, compared with the control, as well as an increase in the amount of hemoglobin. In the experimental groups carcass yield made up 60.38 % and 56.88% (P>0,99), while in the control amounted to 55.56 % Thus, the preparation “Sporotermin” is a promising product from a number of probiotics used in animal nutrition and allows improving the productivity and meat quality of rabbits.

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