Биологические и сельскохозяйственные науки

The effect of additives based on fodder yeasts on some biochemical indicators of blood in lactating cows

The article presents the results of studying the effect of yeast-based feed additives on metabolism of lactating cows. It has been stated that in the doses recommended by the manufacturer they do not have a negative impact on metabolism. The use of fodder yeasts allows to optimize the level of protein metabolism in animals.

Pests and diseases on the white mustard testes

On the white mustard testes on soddy-weakly podzolic soil is revealed a complex of pests belonging to the orders Coleoptera, Hymenoptera, Lepidoptera, Homoptera, and five types of fungal diseases. Spraying of 5% Sumi-alpha insecticide with a consumption rate of 0,2 l/ha reduces the number of pests on flea beetles, bedbugs, aphids, blossom veevers, cabbage whites and moths on the 25th day after applying by 90,5-99,3%.

Theoretical prerequisites for studying the seeds ozonation

The paper presents the theoretical prerequisites for studying the problem of seeds ozonation. The analysis of scientific papers describing the results of experimental studies in the field of agricultural crops seeds ozonation has been carried out. Based on this analysis, the theoretical system for determining the seed germination after treatment with ozone has been proposed. This theoretical approach can be useful for studying the ozone concentration effect on seed germination for further agricultural crops productivity improving.

The optimum shelf life of chilled turkey meat using different packaging methods

The study is carried out in LLC «Evrodon», October (c) district of Rostov region. It has been found that males at the age of 140 days are larger 1.80 times more than females, 147 days - 1.62, and 154 days - 1.58. Breast weight of males is 5.42 kg, that is 2.19 kg more than in females. Chemical meat composition has been showed that the dry matter in the meat of 147- day- old males is by 0.86% higher compared with 140 -day-old ones; the dry matter in the meat of 154- day-old males is by 0.33% higher compared to 147- day-old ones. The index in females is 0.5% and 0.6% respectively.

Local monitoring of environment in the conditions of the Vologda region

The article presents the results of local monitoring on the territory of the Vologda region for the period from 1995 to 2017. It is established that the main objective of local monitoring is the monitoring of soil, plants and water, and assessment of changes in time and space

Influence of the season on the mass fraction of protein and urea in the milk of cows of black and motley breeds with different methods of maintenance and milking technologies

The article presents the results of studies on the urea content and the mass fraction of protein in the milk of cows with a tethered and loose method of maintenance, taking into account the technology of milking cows, depending on the season. The optimum content of urea, protein in cow’s milk is established in summer period, the greatest one is revealed in winter period with all milking methods and maintenance technologies

The formation of spring triticale structure with different sowing rates

The article discusses the influence of different sowing rates on the spring triticale yield structure in the conditions of Vologda region. The studies are conducted with various seeding rates on the varieties of spring triticale approved for using in the North-West region - Crest and Ukro. The result is that the different seeding rates have a significant effect on the grain yield of spring triticale.

Efficiency of forced molting on lying hen commercial herds

As a result of the studies carried out on the chicken breed «High sex brown» it has been established that by applying forced molting it is possible to increase the period of industrial poultry use on average by 24 weeks what lets to raise egg production efficiency.

Use of starter combined feeds in the ration of black-andwhite replacement heifers

The article presents results of the research dedicated to the influence of starter combined feeds on the growth of black-and-white replacement heifers. It has been found that feeding the animals at the age of 2-5 months with the starter combined feeds in the amount of 1.5-1.7 kg per head daily contributes to greater edibility of feeds and increase in average daily gains while optimizing the animal health condition.

The productivity of winter rye on sod-podzolic light loamy soil by using fertilizers and a microbiological preparation

The results of field research conducted on soddy-podzolic light loam soil in the Vologda region established that the use of fertilizers significantly increased the yield of winter rye grain both against the background of the flavobacterin biofungicide and without its use. Depending on the doses of fertilizers and bacterialization with a microbiological preparation, the productivity of straw of winter rye naturally increased, the content of nitrogen, phosphorus, potassium in the production increased, the collection of crude protein by grain and the productivity in feed units increased.

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