Maintenance and care of calves during the milk period, when it is necessary to distribute mainly liquid feed, is very laborious. Most of the time is associated with the delivery of feed on a cart in milk flasks and filling buckets from flasks when hand-watering the calves. proposed Feeder device on a mobile frame (rod), which moves on rollers with the help of an electric drive, proposed for distributing liquid feed to calves in boxes. It consists of a carrier conveyor with fixed buckets, which alternately reciprocates towards the feeders. This technical solution is applicable on farms where separate group cages or boxes are used for keeping calves. The proposed liquid feed distribution technology raises the level of the entire calf feeding process. It was found that as a result of the work of the distributor, the use of manual labor decreased by 90%. The actual labor productivity was at least 400 heads per hour, therefore, one operator, when working with a distributor, is fully capable of drinking 200 calves in 0.5 hours. The use of a mechanized system for distributing liquid feed on farms has a positive effect on reducing the level of morbidity in calves associated with the digestive organs - by 20%. Gross and average daily gains in live weight increase by 5-6%.
Microwave irradiation of animals on the frequency of the resonance transparency of aqueous media at the power flux density 10 NW/cm2 didn’t accompanied by a statistically significant effect on the severity of experimental acute respiratory distress syndrome. Analysis of the distribution of pulmonary index, as an indicator of the severity of the alveolar-capillary disorders, suggests that while the power flux density of microwave radiation 10NW/cm2, its normalization occurs in 40% of the animals. It is noted that in this capacity, there is a reduction in the proportion of animals with lung index in the range of 8-12% from 60 to 20% (p=0.011). The statistical analysis revealed significant differences distributions it absolute values in this group and the comparison group, in which microwave irradiation hasn’t been conducted (χ2=36,4; р=0,001). Microwave irradiation with the power flux density 50 NW/cm2 is manifested by normalization of pulmonary index in 83% of the animals. However, in 17% of animals subjected to such exposure it was noted the high conservation values of the index, which doesn’t exceed 12 units. The increase of power of microwave radiation of up to 80 NW/cm2 is accompanied by normalization of the manifestations of acute distress syndrome in 77% of the animals (p<0.001). The analysis showed that the effect of microwave radiation on the cell culture of whole blood in low power flux density is accompanied by growth in supernatant the concentration bradikinin by 5.6% (p=0.37), NO by 0.54% (p=0,81) and Pg I2 by 0.35% (p=0,87). It is noted that with the increase of density of up to 50 NW/cm2, further increasing the concentration bradikinin by 34.6% (p=0.033), NO by 1.43% (p=0.21), Pg I2 by 0.91% (p=0,76) in comparison with control occurs. A further increase to 80 NW/cm2 contributed to the growth of the concentration bradikinin by 38.3% (p=0.01), NO by 2,33% (p=0,17) and Pg I2 – by 1,4% (р=0,17).
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