Employees of the Ternopil Research Station on the basis of organic and inorganic acids created a newliquid acidifier for broiler chickens called the "Aquasan". It positively affects the preservation, productivity and constant microflora of the digestive tract in chickens. An important indicator of meat is its harmlessness and biological value. The purpose of the paper was to research the toxicity and biological value of chicken meat in case of feeding the stock with the "Aquasan" acidifier. The research was conducted on three groups of chicken broilers of the breed Ross 308-50 heads in each group. The first group of chickens was the control one, and the second group of chickens was fed with 0.1 % solution of the "Aquasan" acidifier from the 27 th day of fattening within 10 days (27 th -31 st and 34 th -38 th days). The growing period lasted 43 days. Toxico-biological evaluation of chicken meat was carried out by express method using infusorias Tetrachymena pyriformis. Study of toxicity of pectoral and thigh muscles of the chickens have shown that within 24 hours of observing the infusorias, there was no death or inhibition of growth in an environment. Only on the 24 th hour of observing in the experimental and control groups, there were infusorias with changes in shape and nature of movement in the amount of 0.1-0.2% cultures. The results of the research indicate that there is no acute and subacute toxicity of broiler meat in case of feeding the Acquasan acidifier. After 96 hours of research, 0.5-0.6 % of dead infusorias was found in samples of pectoral and thigh muscles in both groups. Also, there were infusorias with changes in shape and nature of movement on the 4th day, 0.3-0.4% and 0.2-0.3% respectively. There were no changes in growth of infusorias in the test group. Comparing the results of studies with control samples, it can be noted that the broiler chicken meat does not exhibit chronic toxicity. During 96 hours of research on the toxicity of chicken meat, no significant changes were found in the experimental group. Consequently, chicken meat from broilers grown with the use of "Aquasan" acidifier according to the express method is non-toxic, i.e. harmless for consumption. During the study of biological value of chicken meat, calculation of number of infusorias who grew up on the 4th day in the environment of the research samples of pectoral and thigh muscles, showed a lack of credible changes in their number as compared with the control. The absence of a reliable decrease in the relative biological value of meat indicates the high quality of the broiler chicken product in case of feeding them with the "Aquasan" acidifier.
У статті наведено результати впливу випоювання підкислювачем «Аквасан» на мікробіоценоз кишківника курчат бройлерів при вирощуванні. Встановлено, що розроблений підкислювач «Аквасан» позитивно впливає на кишковий мікробіоценоз курчат бройлерів і кількість корисної автохтонної мікрофлори (біфідобактерії, лактобактерії) збільшується, в середньому, на один порядок. За випоювання підкислювача кількість умовно-патогенної мікрофлори (Escherichia coli, БГКП) зменшується, а патогенна (Staphylococcus aureus) − не виділяється у вмістимому шлунково-кишкового тракту.
The acidifying agents are being used more often as an alternative to fodder antibiotics in order to preserve bird’s stock and increase productivity. We created the new liquid acidifier “Aquasan” for broiler chickens on the basis of organic and inorganic acids. The application of various feed additives or drugs to the diet of chickens leads to changes in the chemical composition of meat. The purpose of the paper was to research the slaughter qualities and the chemical composition of broiler chicken meat in case of feeding the stock with the “Aquasan” acidifier. The research was conducted on three groups of chicken broilers of the breed Ross 308 – 50 heads in each group. The first group of chickens was the control one, the second group of chickens was given the acidifier analogue called “FEEDACID MAX L”, and the third group was given the new acidifier “Aquasan”. The process of feeding of 0.1% of the working acidifier solutions was performed from the 27th day of fattening within 10 days (27th–31st and 34th–38th day). The growing period lasted 43 days. The moisture content of meat was determined by the method of drying, the content of protein – by the Kjeldahl method, total fat – by the Soxhlet method, the ash content – by the charring method. It has been established that the use of the “Aquasan” acidifier contributed to the increase in the productivity of broilers, the live weight of chickens on the 43rd day of breeding increased by 1.1 times (Р ≤ 0.05), and the weight of a carcass by 1.2 times (Р ≤ 0.05), in particular, by 310 g and 350 g, respectively. Also, the use of the acidifier allowed increasing the livability of chicken stock by 6% (Р ≤ 0.001). The average yield of carcasses of broilers increased by 4.4% (Р ≤ 0.05), which is 2% more than the standard values for this breed of chickens called Ross 308. With the use of the “Aquasan” acidifier, an increased content of dry matter in the broiler meat by 1.5% (Р ≤ 0.05) was noted and, accordingly, a decrease in the same percentage of moisture in meat. The protein content of chicken meat on the 43rd day of breeding increased by 0.9% (Р ≤ 0.05), ash increased by 0.3% (Р ≤ 0.05), and the fat content decreased by 0.4% (Р ≤ 0.05). Similar changes in slaughter rates and chemical composition of chicken meat were also observed in case of feeding the acidifier analogue “FEEDACID MAX L”; the difference compared with the new “Aquasan” acidifier was insignificant. Consequently, the feeding of the liquid acidifier “Aquasan” to chicken broilers from the 27th day of their breeding does not lead to deterioration in the quality of the slaughter and the chemical composition of poultry meat.
У статті наведено вивчення впливу застосування нового підкислювача «Аквасан» на продуктивність курчат бройлерів. Встановлено, що з 27 дня випоювання підкислювача спостерігали зростання живої маси бройлерів аж до 42 дня вирощування. На 35 добу маса курчат збільшувалася на 100,8 г (р≤0,05), а на 42 добу − на 245,8 г (р≤0,01), порівняно з контрольною групою. У період вирощування 29−35 та 36−42 доба при застосуванні підкислювача «Аквасан» у курчат середньодобові прирости за тиждень зростали відповідно на 13,8 (р≤0,05) та 20,7 г (р≤0,01). Витрати корму на 1 кг приросту живої маси курчат на п’ятий тиждень (29−35 доба) зменшувалися на 90 г (р≤0,05), а на шостий тиждень (36−42 доба) вирощування − на 150 г (р≤0,01). Дані результати досліджень вказують на те, що застосування підкислювача «Аквасан» стимулює процеси травлення, засвоєння поживних речовин і, як наслідок, сприяє зростанню живої маси курчат бройлерів та ефективному використанню кормів.
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