North-Caucasus Research Institute of Animal
Author list of organization
List of articles written by the authors of the organization
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EFFECT OF DRY BAKERY YEAST SACCHAROMYCES CEREVISIАE IN MILK COWS DIET
06.00.00 Agricultural sciences
DescriptionThe effect of dietary supplementation with dry bakery yeast culture Saccharomyces cerevisiae in high concentrate diet (F:C=47:53) on milk yeald and rumen fermentation were studied on two groups primiparous lactaiting cows (8 cows per group) and four ruminally cannulated nonlactaiting cows on diet F:C=25:75. Cows fed yeast during 67 days produced 1.24 kg/d and 1.66 kg/d natural and 4% fat corrected milk respectively more, than control cows. Milk protein and fat percentages were also higher. On diet with yeast ruminal concentration of lactate was lower and butirate+propionate was higher. The yeast incrised rumen pH, decreased NH3 in rumen and urea in blood, decreased viscosity of rumen fluid
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06.00.00 Agricultural sciences
DescriptionWe have studied the influence of dietary probiotics and metal salts, iron and copper, as detoxifiers for the negative factors which adversely affect the sanitary condition of feeds for farm animals. The optimal doses of detoxifiers in the food infected with mold due to storage conditions were found. The positive effect was, on average, 8%
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EXPLORE THE POSSIBILITY OF GROWING YOUNG GEESE IN THE DIETS OF THE SEEDS OF RAPE OF 00-TYPE
06.00.00 Agricultural sciences
DescriptionThe article deals with the problem of growing geese and explores the possibility of feeding young geese with rapeseeds of 00-type and their products
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06.00.00 Agricultural sciences
DescriptionThe article presents materials on comparative study of the nutritional value of chickpeas and peas which are widespread in the arid zone of the Southern Urals. The scheme of the scientific and economic experiments involved the assessment of yield formation of chickpeas and peas during the vegetation. The study showed that different varieties of chickpea and pea have considerable difference in the content of nutrients. The amount of crude protein in the pea grain ranged from 25.1 to 26.8%, and chickpea – 21.7 - 22.9%. With regard to the fat, its highest concentration was in chickpea grain - 3.63%, on average, which is 1.16% higher than on average in the pea grain. The chemical composition of the pea and chickpea grain of different varieties points to differences in their composition and homogeneity within the culture. Basing on the study, we recommend to sow chickpea and pea grain in the middle of May to obtain the highest yield, this, in turn, has a positive effect on the nutritional value of the crops. When selecting plants for cultivation in the conditions of the Southern Urals, it is preferable to choose the variety of Madonna pea, which has a higher potential for yield than the chickpea variety Krasnokutsky-123. It has been experimentally found that chickpea grain has better moisture-retaining power in a bound condition during the vegetation period as compared to the relevant characteristics of pea grain, which is a positive drought-resistant value of crop. In structural elements of the harvest the peas showed the trend of the highest rates in comparison with the corresponding elements in chickpeas
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ABOUT USING FAT ADDITIVES IN FEEDING OF AGRICULTURAL POULTRY
06.00.00 Agricultural sciences
DescriptionThe article is dedicated to the problem of full-value rations for farm animals and poultry at the expense of the use of different fat additives. We have also discussed the prospect of dry palm oil usage in geese feeding
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EFFECT OF FAT ADDITIVE ON THE PRODUCTIVITY
06.00.00 Agricultural sciences
DescriptionThe author has studied the efficiency of diets with kiselgura. Introduction of the kiselgura into the mixed fodder for chicken-broilers favors increasing of live weight by 4.8 % and average daily weight gain by 5.0%
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Description
In the article, there are the results of comparative studies of the effect of diets with imbalance lysine and tryptophan on the growth, appetite and tissue components of the protein-synthesizing system of Wistar rats and pigs
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CONSTRUCTION OF MUTANTS OF BACTERIOPHAGE T4 WITH REDUCED ANTIGENICITY
DescriptionA method of obtaining insertion mutants for the hoc gene, which encodes for the main phage antigen, was developed on the model of bacteriophage T4. This gene was cloned in the plasmid pBSL0+ and was disrupted by insertion of foreign DNA. The phage mutants were obtained by in vivo phage-plasmid recombination. The construction of insertion bacteriophage mutants was carried out in two stages. The resulting mutants on this procedure could be grown on wild-type E. coli strains, which is convenient for the production and use of these phages in therapy. The mutants obtained had reduced antigenicity. At the same time, the yield of the mutant strains was high when they were grown on the non-suppressor E. coli laboratory strains. A number of stages of purification of the bacteriophage mutants obtained were performed. Preparations have been studied by transmission electron microscopy and mass spectrometry. By several periodic cultivations of the mutant bacteriophages, it was shown that mutations of this type are stably maintained during more than 50 generations. T4 related bacteriophages of the family Myoviridae, for example, T-even, have the significant homology amongst their genomes, which makes possible to produce similar mutants. Thus, our method was developed to obtain mutants with reduced antigenicity which can be used for both the treatment of systemic infections, and diarrhea in the case, when, bacteriophages penetrate into the bloodstream. Such phages can be used in medicine and veterinary. The reported study was partially supported by RFBR, research projects No. 13-04-00991, 16-44-230855
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USE OF FAT ADDITIVES IN FEEDING OF AGRICULTURAL ANIMALS AND POULTRY
06.00.00 Agricultural sciences
DescriptionThe article is dedicated to the problem of different fat additives use in the rations for agricultural animals and poultry
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MIXED FODDERS WITH RAPESEED OILCAKE FOR PIGS
06.00.00 Agricultural sciences
DescriptionThe efficiency of replacement of sunflower oilcake by rapeseed oilcake from double-zero rapeseed varieties was proved for mixed fodders for pigs