Blood fibrinogen dynamics in fish under stress
The paper presents the research results of blood fibrinogen in carps under stress. It is established that the coagulation processes have accelerated under hypoxic stress by the 4th day of the experiment.
Biochemical blood test in high-yielding lactating cows during the initial stage of lactation depending on the housing system
The biochemical parameters of blood in high-yielding lactating dairy cows during the initial stage of lactation and the tightness of this stage depending on the housing system have been studied. Innovative cattle housing and milking methods are considered in comparison with the classic tied housing system. The authors point out that the basis of effective dairy farming is the organization of standardized feeding system, and its impact on the condition of the animal.
Editing the genome of farm animals using CRISPR / Cas9 technology
One of the most discussed topics in modern genetics is the technology emergence for editing of biological objects genomes CRISPR / Cas9, which has a huge impact on molecular biology, this technology allows adding, removing and making changes to the genome of various organisms, including higher mammals. It is an innovative and powerful tool for obtaining animals with specified characteristics. It has become possible in a relatively short time to create an animal with the modified genome, which improves the quality and efficiency of livestock production. The article gives an successful experiments overview in the world practice of editing agricultural animals using CRISPR / Cas9 technology.
Progressive agronomy in creation and effective use of high-productive haying pasture lands for dairy cattle breading
Long-term researches into the feasibility, consistency and cost-effectiveness of creation and effective use of haying pasture lands for dairy cattle breading showed that different approaches to the redistribution of resources available in agro-farming can be used in various farming conditions. The economic efficiency of the innovation under consideration is, according to the hayfields, 1.33 $ / year of net profit per 1 hectare of agricultural land, and for pastures 5,24 $ / year.
Improving the Romanov young sheep raising
The article presents the materials of synthesizing and analyzing the ten-year experience of a peasant farm on improving the Romanov sheep breeding. New approaches in raising young sheep allow achieving the planned live weight with the rational use of feed per product unit in a timely manner.
Influence of various diets on association of polymorphism in MSTN gene and live weight increase in young cockerels of pushkin breed
The effect of different diets on the growth rate of Pushkin breed cockerels depending on the genotype in substitution of rs313744840 in the myostatin gene has been analyzed. In cockerels grown on feed for broilers (n = 52) the AG heterozygotes have had the biggest weigh gain, which began to differ significantly (p <0.05) from their peers from the 14th day of life. In cockerels grown on feed for young laying hens (n = 46) the AA homozygotes have had an advantage in growth, but the difference between the groups has proved to be unreliable. Individuals grown on feeds for broilers with the heterozygous AG genotype in substitution of rs313744840 in the parsley MSTN gene have exceeded the live weight of their peers practically during the entire observation period.
Expansion of the starter microflora spectrum in the technology of fermented product with whey protein hydrolyzate
In order to expand the spectrum of starter microorganisms for the production of a probiotic product with whey protein hydrolyzate, a fermented secondary milk raw material was tested by a consortium of microorganisms Lactobacillus delbrueckii subspecies bulgaricus, a combination of five species of bifidobacteria (B. bifidum, B. longum, B. adolescentis, B. breve, B. infantis) in combination with Streptococcus thermophilus in a ratio of 1: 1: 2 with the addition of whey protein hydrolyzate in an amount of 1 to 3%. The positive effect of whey protein hydrolyzate on the development of starter microflora was established. The functionality of a fermented milk product with whey protein hydrolyzate has been proved.
Theoretical and practical aspects of the process of crystallization of lactose in the production of condensed milk with sugar
The work analyzes various parameters and intensification ways of lactose crystallization in sweetened condensed milk manufacturing. As a result it is concluded that lactose crystallization with two-stage cooling is the most effective method that can be recommended for production.
Microbiological Aspects of Enriched Fermented Milk Products Manufacture with Use of Whey
The possibility of using propionic acid bacteria and acidophilic lactobacillus as a probiotic microflora has been analyzed. The use of kefir grains in the composition of a polycomponent starter has been suggested. A comparative assessment of starter cultures development in cheese whey and skimmed milk has been carried out. A decrease in the activity of growth and acid formation during their cultivation in whey has been noted. To activate the development of starter microflora, improve the organoleptic characteristics of the product, it has been suggested to include skimmed milk in the whey basis of the product. The composition of the polycomponent starter (5%) containing propionic acid bacteria, kefir ferment and acidophilic lactobacillus in a ratio of 2.5:2:0.5, respectively, has been specified; it provides the highest yield of propinic acid bacteria and acidophilic lactobacillus, what determines the probiotic properties of the product.
The development of a seed cum fertilizer drill with a dosing device based on a flexible single helix auger
A constructive technological scheme of the seed cum fertilizer drill ADK2.8 for direct strip sowing of grass seeds and sowing of a starting dose of mineral fertilizers is offered. On the basis of a single helix auger the original design of the conveying-dosing device of a seed cum fertilizer drill for direct strip sowing of mineral fertilizers is proposed. Experimental studies have shown that the minimum coefficient of variation in the rate of seeding and grinding of granules of mineral fertilizers is reached at a rotation frequency n = 2835 min-1, helix diameter D = 4247 mm, wire diameter dпр = 5 mm, spiral pitch S = 1012 mm. Laboratory-field tests revealed that the seed cum fertilizer drill ADK2.8 reliably performs the direct strip sowing of mineral fertilizers with a seeding rate of 80290 kg/ha with uneven seeding between the devices 13.5% and instability of the seeding dose of 5.7%.
Use of regional raw materials in functional product manufacture
The authors of the article have analyzed scientific and technical and patent literature in the field of producing functional fermented milk drinks as well as in the field of using grain fillers. The researchers offer to use regional raw materials as functional components. Linen flour and linseed oil are offered to be added as functional additives of plant origin into the projected product composition. The article describes the research of determining the composition of the fermented skim milk product.
