Background and Aim: In recent decades, the use of various feed supplements is the current trend in poultry farming, among which phytogenics serve as alternatives to feed antibiotics. This study aimed to examine the effect of feeding various doses of milk thistle extract (Silybum marianum) on the morphological and biochemical parameters of the blood in broiler chickens. Materials and Methods: Experiments were carried out in an industrial poultry farm on broiler chickens of the Hubbard ISA F15 cross for 40 days. One control group and five experimental groups of day-old chickens were formed. The number of birds in each group was 50. Broilers of all groups received complete feed, and the experimental groups received an additional milk thistle extract at doses of 0.1, 0.5, 1.0, 1.5, and 2.0 mg/kg of body weight. Milk thistle medicinal plant extract was obtained using water-ethanol extraction followed by low-temperature vacuum drying. For the assessment of blood analyses, samples were collected from the wing vein of six chickens per group. Using unified methods recommended by the International Federation of Clinical Chemistry, the content of red blood cells, hemoglobin, white blood cells, total protein, protein fractions, triglycerides, glucose, calcium, phosphorus, and the concentration of alanine aminotransferase and aspartate aminotransferase in the blood serum were determined. Results: It was found that the introduction of milk thistle extract into the diet of broiler chickens with the aforementioned doses increased the number of red blood cells, hemoglobin, white blood cells in the blood, as well as a decrease in the level of albumin and an increase in the content of γ-globulins in its serum. Conclusion: The authors assume that the introduction of milk thistle extract into a complete feed for broiler chickens increased the anabolic processes in their bodies, accompanied by increased use of proteins of the albumin fraction as the main material for organogenesis.
In the last decades, in the majority of the developed countries of the world, one of the trends in obtaining food products, including those of animal origin, has been obtaining organic products that do not contain artificial ingredients: antibiotics, growth promoters, GMOs, or any other biologically active substances of other than the natural origin. Currently, phytobiotics, i.e., active components of various plants are successfully used as their substitutes for preserving the health of animals and poultry, and for improving their productivity. The authors have studied the effect of the extract of Calendula Officinalis obtained at the Agroecology scientific laboratory of the Kemerovo SAI using the method of water-ethanol extraction followed by low temperature drying on the egg productivity of Manchurian quails. It has been found that out of the three dosages of the preparation used in the experiment (800 mg, 1,600 mg and 2,400 mg per 1 kg of feed) the maximum positive effect on the studied parameters (egg production, morphological and chemical composition of eggs, feed used for the production of 10 eggs, poultry preservation rate) was observed for the dosage of Calendula Officinalis being equal to 800 mg/kg of feed
T HE production of new fortified feed supplements and concentrates, balanced by the organic nutrients content, takes one of the leading positions in agriculture manufacture. Food production waste has recently been one of the forms of an accessible source of biologically active substances (oilcake, oil meal, molasses, treacle, etc.). Proper processing of these raw products allows you to use it in obtaining highly nutritious feed supplements with a high content of protein, minerals, vitamins, and sugars. Food waste does not harm the animal's body; it was found; they have easily processed and high biological value. This work is presents the formulation of a new extruded feed supplement, using it in the main ration of lactation cows increases the productivity of the animal by 10-12%. The mass protein fraction in the obtained milk was in 9-11% higher comparative to milk from cows without receiving an additional feed supplement in their rations. It is proved that the developed extruded feed supplement does not adversely affect the body of lactation cows, which is confirmed by a research of the morphological blood composition.A supplementation dairy cow with 3 kg per cow daily for 15 days of our studded concentrated mixture is recommended.
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