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.
Highlights
Modern industrial poultry production, as well as other livestock industries, occupies a leading position in the production of dietary foods
Laboratory studies have shown that selenium nanoparticles (SeNPs) do not act exclusively as antioxidants: redox-regulating activity of SeNPs has been established, which may enable them to act as non-traditional antibacterial, immunomodulatory and growth-promoting agents through various metabolic regulatory mechanisms
The aim of the research was to study the effect of feed probiotic additives, biogenic selenium nanoparticles, compared to the inorganic form of selenium and their complex on growth, feed conversion, biochemical parameters of blood, and preservation of quails
Summary
As well as other livestock industries, occupies a leading position in the production of dietary foods. That is why it is appropriate to use biologically active substances (Tsekhmistrenko et al, 2018) and probiotics (Tymoshok et al, 2019) in a balanced diet, which allow obtaining high-quality products from healthy livestock without the use of feed antibiotics (Tsekhmistrenko et al, 2020b). Laboratory studies have shown that selenium nanoparticles (SeNPs) do not act exclusively as antioxidants: redox-regulating activity of SeNPs has been established, which may enable them to act as non-traditional antibacterial, immunomodulatory and growth-promoting agents through various metabolic regulatory mechanisms. The addition of probiotic additives, in a complex with nano-selenium, to forages will promote increase of growth rates, and antioxidant protection activation of an organism, positively influence bird’s preservation
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