Efficiency of application of inorganic and nanopreparations of selenium and probiotics for growing young quails

Abstract

Modern industrial poultry farming occupies a leading position in the production of dietary foods, for which it is appropriate to use biologically active substances and probiotics. The study compared the effectiveness of compound feed with the addition of sodium selenite, bio-nano-selenium and L. plantarum in terms of body weight, weight gain, feed consumption and safety of experimental quail. The quails of the Pharaoh meat breed were kept in the vivarium of Bila Tserkva National Agrarian University and by the method of analogues were divided into 4 groups - control and three experimental ones. The duration of the study was 35 days. The results of the study indicate that the use in the quail’s diet of probiotics (L. plantarum) and selenium preparations (sodium selenite and bio-nano-selenium) leads to a predominance of poultry experimental groups in live weight over control analogs. It was found that the growth of bird’s live weight during the experiment differed depending on the use of the Selenium medication or probiotic, and the most intense effect on live weight of quails was the use of bio-nanоselenium in the diet of poultry (11.8% at the end of the experiment). Changes in absolute and average daily body weight gains of experimental birds have been clarified. The use of sodium selenite in the diet of quail caused a tendency for an increase in gains compared with control analogs at the beginning of the study and a downward trend during the fifth week of the study. It was found that the use of probiotics and bio-nano-selenium caused an increase in quail growth, which was more pronounced and reliable when feeding bio-nano-selenium. The obtained results show that probiotic and selenium preparations reduce feed consumption by 1 kg of weight gain, body weight increase by 3.05–11.8% and by 3.3–6.6% increase the safety of the experimental livestock with the best indicators in the group, receiving bio-nano-selenium.

Effects of different inorganic selenium levels in laying quails (Coturnix coturnix Japonica) diets on performance, egg quality, and serum biochemical parameters

“…Previous authors considered that the use of high inorganic selenium doses in the diet of quails be limited due to the possible toxic effects. (13) However, our results showed that an amount of sodium-selenite above 0.50 mg/kg did not negatively influence egg production and quail performance during the study time (10-20 weeks of age). Additionally, there was no adverse effect of sodium-selenite up to 1 mg/kg diet on the appetite, as indicated by similar feed intake among all groups.…”

“…Lower levels have been associated with the development of cardiovascular disease, impaired growth and development, poor feathering, reduce egg production, susceptibility to viral infections, and an increased risk of mortality. (13) However, all our experimental animals were alive and apparently healthy at the end of the study, even quails fed the control diet without supplementation (0.1 mg/kg of selenium), as shown in Table 1. Surai et al (8) proposed that the ingredients of poultry diets have variable selenium content, and perhaps this content is adequate to satisfy the requirements of laying quails.…”

“…Our results are in accordance with most of previous studies that report no influence of sodium selenite on body weight gain and body weight change. (14,(23)(24)(25) Tsekhmistrenko et al (13) observed that dietary sodium selenite increased body weight gains of quails at the beginning of the study. However, this trend disappeared after five weeks.…”

“…Determination of biochemical parameters in the blood is a tool that assists in the diagnosis of metabolic diseases. (12) Tsekhmistrenko et al (13) proposed that high concentrations of sodium-selenite in the diet would lead to greater accumulation of selenium in the brain, heart, and liver, causing disease. Despite differences in serum creatinine and glucose levels between the study groups, the rest of the serum parameters did not differ.…”

“…(12) Previous studies suggested that the use of inorganic selenium is more limited considering the possible toxic effects. (13) Although this fact appears obvious in broilers and laying hens, it is not so clear in quail.…”