Name
Petenko Alexander Ivanovich
Scholastic degree
•
Academic rank
professor
Honorary rank
—
Organization, job position
Kuban State Agrarian University
Web site url
—
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Articles count: 14
The article presents the results of the study of microbiological composition of biohumus and humic substances obtained by fermentation method according to the technology developed by the authors. The problem of processing livestock wastes is caused on the one hand by the occurrence of large volumes of them, and on the other hand by the addition of such important elements as nitrogen, phosphorus, potassium, etc., which can be used as bioelements. The goal of research was to develop a technology for the production of humic compounds from biohumus and to study the microbial communities that occur in them. Results of researches showed that for biohumus with high content of humic substances, bovine manure must be composted with chopped straw at the ratio of 8:1. Biocomposting of manure and crushed straw using the developed technology enables to obtain biohumus containing humic substances of 20 g/l. Among the physiological groups of biohumus microorganisms, the most numerous groups are aminoautotrophies and ammonifiers - 231.6×106 and 130.33×106 CFU/g, respectively. At the same time the grouping of cellulose-decomposer actinomycetes in biohumus was quite numerous and amounted to 0.93×103 CFU/g.
The article analyzes the possibility of complex
processing of one of the most important secondary raw
materials of Krasnodar region – sugar beet pulp with
the aim of obtaining a food product and enriched feed
additives. Meanwhile, the use of environmentally
safety technologies that cause minimal harm to the
environment and human health is provided. One of the
most valuable components of sugar beet pulp after
extraction of sugar is pectin substance. Sugar beet
pectin substances have high complexing ability and are
used not only in food industry, but also in medicine.
They are natural detoxifiers and antioxidants.
Currently, only dry powder pectin is produced from
sugar beet pulp and only by foreign producers. Making
food pectin extracts from sugar beet pulp will not only
reduce the number of processing steps, but also
significantly reduce the cost of the final product. Food
pectin extracts can be used not only as a standalone
product in treatment and prophylactic nutrition, but
also as an ingredient in the manufacture of soft drinks,
confectionery and bakery, meat and dairy products,
etc. The technology of producing a valuable
component of feed bioproduct based on spent sugar
beet pulp and a microscopic fungus of the genus
Trichoderma is described
The purpose of the research is to compare the effect
of a new symbiotic feed supplement created based
on propionic and lactic acid bacteria with a widely
used domestic and foreign enzyme-probiotic
preparations in chickens 0-28 days of age of the
Lohmann Brown egg cross. In the experiment, there
were six groups of chickens: group 1 received basal
diet (BD); group 2 – BD + symbiotic preparation;
group 3 – BD + Bacell; group 4 – BD + Agrocell;
group 5 – BD + Agroksil; group 6 – BD + Ollzaym
Vegpro. Average daily gain, food conversion rate
per 1g of weight gain, digestibility of organic matter,
crude protein, crude fiber, crude fat, made up
respectively: group 1 – 8.17, 1.91, 71.4, 58.3, 68.0,
81.1; group 2 ˗ 8.36, 1.90, 72.4, 60.2, 69.7, 88.1;
group 3 – 8.13, 1.91, 73.1, 60.2, 69.7, 88.1; group 4
– 8.33, 1.86, 74.2, 62.5, 72.2, 87.6; group 5 – 8.50,
1.83, 77.3, 64.1, 73.4, 95.4; group 6 – 7.91, 1.92,
73.2, 67.5, 70.7, 94.3. The growth rate of chickens
fed with symbiotic feed supplement was 2.3%
higher than in the control and they showed the
highest fiber digestibility. The chickens on diet with
Agroksil enzyme efficiently raised growth rate
(+4%) and reduced feed costs (-4.2%). Agrocell
increased weight gain by 2% and reduce feed costs
by 2.6%. The growth rate of chickens fed Ollazaym
Vegpro was the lowest (96.8% of control), despite
the fact that it increased significantly the
digestibility of crude protein, but slightly improved
the digestibility of other nutrients. Outcome:
symbiotic feed supplement may be of interest as a
means of increasing the productivity of chickens
The article presents materials about selection and
optimization of the nutrient medium for cultivation
of Propionibacterium shermanii. We have shown a
high positive effect expressed in the intensive
growth of microorganisms of Propionibacterium
shermanii on optimized medium with the juice
from the tomatoes, as well as replacement of
glucose on corn extract, which allows concluding
that these components have a positive impact on
the accumulation of biomass of Propionibacterium
shermanii
The experiment studied the use of an herbal
component in feeding of young geese, consisting of
hay meal and alfalfa juices coagulate. The replacement
of 50 % of complete feed by the studied feeding stuff
reduced the protein content in the diet by 9.9-14.9 %
and increased the content of crude fiber 1.76-2.01
times. Gross weight gain in the experimental group
decreased by 3.9 %, with an increase in feed cost by
17.1 %. However, carcasses of geese in experimental
group increased absolute weight of muscles of the
breast and legs by 28.6%, and the relative – 5.6 %
(Р˃0.05). Using of herbal ingredients tended to
increase the yield of dressed carcass by 4.8 %, while
the share of internal fat and skin with subcutaneous fat
was decreased. There were no differences in the
chemical composition of poultry muscle tissue in the
groups. Using of herbal ingredients decreased the cost
of 1 kg of feed by 0.7 rubles, but the cost price of
weight gain increased by 5.0 %. It was concluded that
it is necessary to carry out additional studies involving
the feeding of poultry with the identical by nutritional
value compound feed with the additive under study or
without it
The article presents the materials of the study of the
features of cultivation of Lactobacillus sp. on
different culture medium. We have made a
comparison of standard culture medium for
cultivation Lactobacillus sp. and determined the
most optimal culture medium
We have presented materials about nutrient media
for growing and industrial the cultivation of
Propionibacterium shermanii: Trypticase Yeast
Extract Glucose Medium, the culture medium
Ellinger and ATCC Medium 33. We have studied pH
change and its impact on the biomass accumulation
of propionic acid microorganisms. We have also
defined the best time of cultivation
The article presents the materials on the effect of "My-cosim SP +" enzyme feed additive on growth and de-velopment, biochemical and morphological parame-ters of the quail and the results of post-mortem autopsy of quail to determine the effect of additives on changes of the quality and flavors of the meat
The article presents the results of studying the morphological characteristics of different varieties of pumpkins, zoned in the Krasnodar region
Rice blast caused by Pyricularia oryzae is a major disease affecting rice production grown in upland and wetland rice. Application of biotechnological approach to protect against the disease may be an alternative strategy to chemical control