Influence of probiоtic additive “Evitalia” on growth and blood indices of quails

Abstract

The results of the studies on the determination of the optimal dose of the probiotic additive “Evitalia” (PAE) for the quails of the Texas breed have been presented in the article. The experiments were conducted on the quails aged 1–35 days. The object of the research was the probiotic additive “Evitalia” that consisted of eight components (the strains of lactic acidmicroorganisms, macro- and microelements). The subject of the investigation was the influence of PAE on the growth, preservation, the morphological composition and biochemical indices of blood. The studies were carried out in the following conditions of microclimate and sanitary regime: the air temperature in the pens-cages was 16–18 ºC in the autumn and winter period that was 5–7 ºC lower than it was provided by the standard; in spring the temperature was 23–15 ºС that was lower than it was provided by the standard (29–35 ºС). The concentration of carbon dioxide ranged within 0.20–0.25 % (2.0–2.5 l/m3), ammonia – 12–13.4 mg/m3, the general contamination of the air by microflora was 50–60 thousand KOE/m3. The experiments were conducted on the four groups of quails, 60 quails in each group. The quails of the control group were fed by water without PAE, the probiotic at the dose of 7 mg/500 ml of water was given to the quails of the experimental group 1 (E-1), 9 mg of probiotic/500 ml water received the birds of the experimental group 2 (E-2) and the quails of the experimental group 3 (E-3) were given the probiotic at the dose of 11 mg/500 ml water. The positive influence of the probiotic additive “Evitalia” on the growth and the body live weight gain of the quails was observedin the experimental groups as compared to the quails of the control group. The trustworthy increase in the growth and live weight gain of the quails was detected on the 7-, 14-, 21-, 35-day of their life (Р < 0.05), especially in the quails that received PAE at the dose of 9 mg (E-2). The quails of the experimental group 2 exceeded the others by the average daily live weight gains. The growth intensity of the quails in the experimental group 2 was 6.43 % higher than that of the control one, higher by 3.47 % and 5.57 % than in the experimental groups 1 and 3, respectively. The preservation of the quails in the control group was lower by 4.8 – 5.1 % as compared to the quails in the experimental groups. By the data on the growth of the body live weight, the composition and biochemical indices of blood of the quails it can be concluded that the optimal dose of the probioticadditive “Evitalia” is 9 mg/500 ml water that activates hematopoesis and stimulates the growth and development of quails.