According to the opinion of F. Z. Meyerson, one of the main reasons for disruption of organs' plastic functions under stress is insufficient intake of substrates and cofactors required for synthesis of nucleic acids and protein, as well as partial or complete fasting. In the first stage, according to the author, activity of amino acids’ gluconeogenesis and transamination enzymes increases through the neurohumoral effect, which is the reason of reduced synthesis of protein and transformation of amino acids into glucose, i.e. plastic resources of the organism, its structural proteins, and energy resources in particular, are transformed.
The use of probiotics Levisel SB Plus and Cellobacterin-T in the amount of 0.50 kg/t of mixed fodder in the diet of young herd replacement of the meat direction during the growing period from 3 to 45 days allowed to get homogeneity by 20.9 and 13.1 % above the analogues of the control group. Probiotic feed additive Levisel SB Plus increased the number of fertilized eggs by 1.96 %, hatchability – by 0.90 %, hatchery waste decreased by 2.7 %, feed costs decreased by 9.6 %. However, the best production results were shown by the group with a similar rate of probiotic Cellobacterin-T introduction, which had these indicators, respectively, of 2.0 %, 1.28, 4.2 and 10.4 %.
Occasional use of the probiotics Levisel SB Plus and Tsellobacterin – T in a dose 0.50 kg/t of the mixed fodder in a diet of the laying hens at the age 21-26, 34-39 и 45-48 weeks has increased metabolic processes in the body of a bird and productivity of the laying hens in a group with Levisel SB Plus by 10.6 %, with a dash Tsellobacterin – T – by 16.1 %, but it did not affect the weight of the egg during all periods of the productive cycle. The egg incubation results showed that probiotice Levisel SB Plus increased egg hatability by 4.1%, Tsellobacterin-T by 6.2%, their fertilization by 2.1 and 4.2%, the withdrawal of young chickens by 3.5% and 5.1%. The addition of probiotics did not change the hatchability of eggs (93.22 and 93.17%) in these groups, but reduced the amount of unfertilized eggs by 1.8 and 10.3%. There was a higher content of carotenoids and vitamin A in the eggs of the laying hens and in the body of daily chickens. Using the probiotics in the diet of laying hens of the parent herd has reduced the cost of feeding for 10 eggs by 8.2-8.5% , with a dash of Levisel SB Plus by 15,0-15,4%, with a dash of Tsellobacterin – T to the weight of the egg by 1,8-9,7% and 15.3-15.5% respectively. At the same time, the payment of food products increased in the group using Levisel SB Plus by 10.3-10.7%, with Tsellobacterine - T by 20.9- 21.7%, the profitability of production increased by 13.1 and 22.3%.
The diet of monogastric animals should be adjusted for vitamin and mineral nutrition during the period of growing and economic use. They affect all types of metabolism, especially in the last third of gestation of sows and the development of young pigs in the postnatal period. For sows throughout the period of gestation and suckling, it is important to include in the diet such biogenic element as folic acid, as well as a set of essential trace elements (copper, zinc, cobalt, manganese) and group B vitamins, the use of which during the entire production cycle helped to improve prolificacy of sows by 15.2%, the average increase was 8.8% and the safety of young pigs dairy period of cultivation is 7.2%, which reduced the cost of feed for growing one reared pig by 10.6-18.1 %.
Optimization of the diet of animals taking into account biogeochemical provinces is important in the issue of their complete feeding, especially in the first months of postnatal development. There is a shortage of nutrients such as manganese, cobalt, iodine, zinc and copper in feed most often in the Ural region. The purpose of the research was to compare the influence of the phytomineral complex Vitafit with biogenic elements and the amylolytic enzyme Glucolyux F when they were included in the diet of calves in the preweaning period of rearing. The inclusion in the diet of calves of the phytomineral complex Vitafit with biogenic elements from alfalfa hay containing mineral salts of manganese, copper, cobalt, zinc and iodine at a dose of 100 ml/head/day, as well as the enzyme Glucolux F at the rate of 0,50 kg/t of compound feed with their separate use had a less noticeable influence on digestibility nutrients of the diet in comparison with their complex feeding. Which allowed to increase the digestibility of crude protein by 3,35 abs.%, fat by 3,02, fiber by 6,35 and nitrogen-free extractive substances by by 1,81 abs.% in comparison with analogues of the control group. In the body of calves in the group with the combined use of the phytomineral complex and the enzyme, nitrogen deposition was higher by 14,2 %, and calcium and phosphorus, respectively, by 12,7 and 16,7 %. Higher retention of nutrients in the diet of calves with the combined use of the phytomineral complex and the enzyme increased the absolute gain in live weight of calves by 6,3 %, while with when they were fed separately, the increase did not exceed 3,1 and 4,2 %. A higher live weight of calves in the group with a complex additive reduced expenditures of feed per unit of increase by 0,5–4,6 %, with one phytomineral complex it was by 1,2–1,8 %, with an amylolytic enzyme by 1,9–3,1 %.
The use of two similar feed additives Sorbitox and Probitox in the diet of replacement stock and subsequently in the diet of laying hens, at a dose of 0.50 kg/t of feed allowed to increase the poultry survival rate at 18 weeks of age by 1.4% with the addition of Sorbitox and 6.4% - with Probitox, the group uniformity by 5.3 and 7.3%, respectively, in comparison with the control group. At the same time, the culling of birds in the experimental groups decreased due to endoenteritis and necrotic enteritidis, and the antibody titer to Gumboro disease increased in the blood. During the productive period of laying hens, the difference in the antibody titer was significantly higher, as was the livestock survival rate. The tested feed additives contributed to a better development of ovogenesis organs. As a result, the egg productivity of chickens with Sorbitox was higher than the control group by 6.5%, with Probitox – by 11.6%. The study of the egg incubation qualities showed that the young stock hatching rate from an average egg size in the group with Sorbitox was 6.9% higher than the control group, with Probitox – by 11.0%, and the hatchability of eggs was 1.1 and 1.6% higher than in the average one. In laying hens at the beginning and at the end of egg laying, the number of infertile small eggs decreased in the group with Sorbitox by 0.60%, with Probitox - by 1.0%, large eggs – by 1.23 and 2.45%, respectively. The chicken hatching rate from small and large eggs in poultry of the experimental groups exceeded the control by 2.9-5.9% at the beginning of egg laying, by 10.0-14.8% at its completion at the age of 56 weeks. The addition of Sorbitox in the diet of replacement stock allowed to reduce feed costs for growing one head of service pullet by 6.9%, with Probitox – by 12.6%, to increase the production profitability by 5.5 and 7.8%, and in laying hens of experimental groups, feed costs decreased by 4.4 and 10.0%, profitability increased by 2.0 and 5.3%, respectively.
The purpose of the research was to study the growth and development of the replacement young chickens of the parent herd of meat production and compare the eff ectiveness of the use of two complex feed additives Sorbitox and Probitox. When rearing the replacement young chickens of the cross Ross-308, the use of feed additive Sorbitox at a dose of 0,50 kg/t of feed made it possible to obtain in comparison with the control group the livability of livestock higher by 1,5 abs.%, with a similar dosage of Probitox additive by 2,1 abs.%. Analysis of the causes of culling of the replacement young chickens showed that the use of Sorbitox and Probitox additives reduced culling after two weeks of age, while in the control group it was observed throughout the entire rearing period. The average live weight of poultry of the control and experimental groups at 18 weeks of age had no signifi cant diff erences, but at the same time the uniformity of the group with Probitox additive exceeded the control by 8,7 abs.%, with Sorbitox by 5,3 abs.%. Analysis of the development of the main organs and departments of the gastrointestinal tract showed that the studied feed additives stimulated the development of the liver, heart, muscular stomach, intestines. The weight of the ovary and the length of the oviducts in the group of chickens receiving Sorbitox exceeded the control group by 20,3 and 9,7 %, with Probitox the diff erence was 27,8 and 11,4 %. Feed additives of sorption and probiotic action in the body of poultry stimulated metabolism of an anabolic nature. In the blood of the chickens receiving Sorbitox, the total protein was by 4,5 % higher than the control group, with Probitox by 5,6 %. At the same time, the level of urea decreased by 26,0 and 33,1 %. The highest glucose content was in the blood of poultry receiving Probitox additive (12,5 mmol/l), which exceeded the control group by 20,7 %, in the group with Sorbitox the diff erence was 7,3 %. The tested feed additives contributed to a greater retention of calcium in the poultry body, and also reduced expenditures of feed for rearing replacement young chickens. The use of Sorbitox additive reduced expenditures of feed by 6,9 %, and Probitox by 12,8 %.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.