Insecticidal bait development for control of Musca Domestica L.

The control of houseflies (Musca domestica L.) in veterinary surveillance premises is an important measure for the welfare of animals against infectious and invasive diseases. For this purpose, the most effective chemical insecticides are used. To prevent possible resistance to them, bait insecticides with two active binary ingredients from different chemical classes are used. The work was carried out in the laboratory of the Tyumen Scientific Center and in the production conditions of ZAO Pyshminskaya Poultry Farm. This material presents the main stages in the development of a prototype of the insecticidal bait Mukhnet AX containing two insecticides: 1.5% acetamiprid and 6% chlorfenapir. For this purpose, adults of houseflies Musca domestica L. 3-5 days old were used. Under laboratory conditions, effective rational doses of the above insecticides were determined by group feeding, feeding and by the method of assessing food insecticidal baits when fighting flies from 0.00002 to 4% concentrations. According to the results of laboratory studies, it was found that the optimal doses causing 100% death of insects were 0.5% for acetamiprid and 2% for chlorfenapir. The insecticidal efficiency of the developed bait Mukhnet AH against flies in production conditions on the first day after the treatment of the livestock building was 91.25%. The insecticidal effect of the measures taken lasted for at least 6 days. The restoration of the number to the previous level of the number of insects occurred after 10 days. Based on the results obtained, the Method of using the composition of an insecticidal bait agent in the fight against Musca domestica was proposed and patented.

Calculation of Water Evaporative Cooling Systems in Animal Husbandry

A method for calculating the parameters of the microclimate in a livestock building using water-evaporative air conditioning is described. It makes it possible to choose a rational temperature and humidity conditions for a room in hot weather, calculate the required air exchange, water evaporation rate and select the appropriate equipment.

Removal of manure from livestock building with the help of hydraulic system

The hydraulic system of removal of manure from the four-row livestock building on 800 cows with the use of locking and regulating hydraulic valves is offered.

Insecticidal efficacy of binary fly bait against houseflies Musca Domestica L.

Modern methods of veterinary disinsection are based on the use of chemical agents. Efficiency of insecticides is determined by composition, form and method of use. Use of mixtures of insecticidal active substances is recommended as one of the anti-resistance strategies, with the most preferred formulations in the form of baits. The purpose of the present work was to evaluate the insecticidal efficacy of the bait composition containing ivermectin and fipronil against the adult fly of Musca domestica L. Intestinal insecticidal effect of a mixture of two active substances (ivermectin and fipronil) on the imago of M. domestica laboratory culture was evaluated by the method of group feeding in laboratory conditions. A mixture containing 0.06% ivermectin and 0.015% fipronil caused the death of (97.6 ± 2.4)% of insects during 24 hours of exposure. Developed insecticidal bait Mukhnet IF (ivermectin 0.06% + fipronil 0.015%) had a 100% insecticidal effect against imago M. domestica in the laboratory after 48 hours of exposure, as well as the monocomponent bait Mukhnet I (ivermectin 0.6%) and Mukhnet F (fipronil 0.15%) and Agita comparison drug (thiamethoxam 10%). The insecticidal efficacy of the developed bait Mukhnet IF against flies in the production environment on the first day after processing the livestock building was 96.7%, which is comparable to the efficiency of the monocomponent bait Mukhnet I and Mukhnet F and the comparison preparation. Obtained results allowed authors to propose «Method for reducing the number of flies at objects of veterinary sanitary inspection» (RU 2692620).

Disinfection of premises in the presence of calves

The paper presents the results of studies on effectiveness of the preparation based on B. subtilis bacteria strains for the disinfection of livestock buildings in the presence of animals. The dynamics of bacterial contamination of livestock buildings was studied using the preparation with an equal combination of B. subtilis TNP-3 and B. subtilis TNP-5 bacteria strains. The work was carried out in the winter at a livestock complex in the Republic of Sakha (Yakutia). For experiments, two experimental and two control sections were organized with six newborn calves in each. The preparation for disinfection was applied by the method of mist spraying. The quality of disinfection was determined after 15 days by the quantity of mesophyll aerobic and facultative anaerobic microorganisms (QMAFAM), bacteria of the Escherichia coli group, staphylococci and microscopic fungi left after washing the fl oor surface in accordance with the approved recommendations. Sanitation of section cells with a preparation containing 1.0 × 109 CFU / cm3 with a fl ow rate of 400 ml / m2 at a temperature of –2 °C to 10 °C inhibited the accumulation of opportunistic microorganisms, including mold and toxigenic fungi. It was noted that QMAFAM decreased by 73.5 times, the number of Escherichia – by 88 times, staphylococci – by 68, fungi of the genus Mucor – by 40 times, Aspergillus fl avus – up to 1.7 × 104 CFU / cm3 in the experimental sections compared to the control. This method of sanitation does not affect the humidity of the livestock building, does not irritate the mucous membranes of the eyes and respiratory tract, and helps to normalize intestinal microbiocenosis. The use of the preparation based on B. subtilis bacteria strains contributes to the prevention of diseases and the preservation of livestock. The method of disinfection in the presence of animals at low positive temperatures in livestock buildings was granted a patent of the Russian Federation for inventions.

24-Hour Microclimate Conditions in Livestock Building

The size of all sensible heat balance components in livestock building varies in time, because it depends on time-varying weather factors. On the example of two buildings, sensible heat balance was shown on a daily basis. Measurements carried out in winter and spring in two livestock buildings with usable attics included measurements of air temperature and humidity inside and outside, air velocity in ventilation channels, and wind speed. Measuring devices were designed to record the results of measurements at intervals of 300s. During each such time interval, sensible heat losses by ventilation, heat losses by permeation through the barrier construction, and the amount of sensible heat produced by the animals were calculated. The results of measurements were shown in graphs. The study is important for the development of animal livestock building.