Scientific Journal of KubSAU

Polythematic online scientific journal
of Kuban State Agrarian University
ISSN 1990-4665
AGRIS logo UlrichsWeb logo DOAJ logo

Name

Shlaychova Oxana Germanovna

Scholastic degree

Academic rank

Honorary rank

Organization, job position

Kuban State Agrarian University
   

Web site url

Email


Articles count: 8

Sort by: Date Title Views
656 kb

AMINO ACID METABOLISM IN COWS DURING THE TRANSITION PERIOD IN BALANCING DIET ON THE EXCHANGE PROTEIN AND DIGESTIBLE AMINO ACIDS

abstract 0961402019 issue 96 pp. 238 – 269 28.02.2014 ru 1205
Application of a factorial method for determining the needs in metabolic protein and essential amino acids, helps to deepen knowledge on physiology of protein and amino acid supply and allow to improve the standards for dairy cows during the transition period; in insufficient of metabolic protein and essential amino acids increased coefficients of their transformation into net protein and absorptive amino acids as a result of mobilization of body of cows; with an optimal protein nutrition their transformation in net milk protein, lysine and methionine accordingly amounted to 0.67, 0,83 and 0,82. The most significant changes in the concentration of methionine, proline, glutamate, glutamine, glycine were observed in cows before calving and immediately after birth, stabilization of their level starts with a 24 lactation day, that is connected with the peculiarities of the feeding behavior of the cows and the gradual intensification of the processes of metabolism and milk production. To control the status of protein metabolism we have offered benchmarks compositions of free amino acids in cows’ blood plasma phases: 21-0 days before calving, 0-21 and 22-120 days after calving
178 kb

CHARACTERISTICS OF NUTRITION AND HEALTH OF DOMESTICATED DOGS AND CATS

abstract 1521908018 issue 152 pp. 220 – 230 31.10.2019 ru 226
The authors of this article have developed a questionnaire for pet owners and conducted a research on the nutrition and health of domestic dogs and cats in the urban environment. By results of researches, it is concluded that in the conditions of the city, cats are a preferable type of pets. The preferred type of food is mixed one, with using dry, natural and wet food. Food standards are followed by 46% of owners of 100% participants of the survey and only 43.3% from consulters with veterinary specialists in the field of feeding of a pet. Among non-communicable diseases, urological diseases are more common: urolithiasis, cystitis, endometritis and ovarian cyst
1242 kb

EFFECT OF DRY BAKERY YEAST SACCHAROMYCES CEREVISIАE IN MILK COWS DIET

abstract 1011407097 issue 101 pp. 1500 – 1515 30.09.2014 ru 1132
The 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
251 kb

METABOLISM, HEALTH AND EFFICIENCY OF COWS AT DIFFERENT LEVEL IN THE DIET OF CONCENTRATES IN THE TRANSITION PERIOD

abstract 0791205008 issue 79 pp. 93 – 112 31.05.2012 ru 2125
In this article, we discussed the problems of the metabolic disease of cows in peripartum period and profitability of the consequent lactation. The article has materials about adaptation in postpartum and arise ketosis, acidosis, laminit and reproductively reasons
377 kb

NEED OF DAIRY CATTLE IN ESSENTIAL AMINO ACIDS

abstract 1481904033 issue 148 pp. 161 – 199 30.04.2019 ru 449
The article presents a factorial model for determining the needs of lactating cows in essential amino acids. The algorithm of the model uses fragments from the NRC – 2001 models [39], CNCPS – 200 [60], and research materials published in the world literature. Instead of the transformation coefficients of the metabolizable lysine and methionine for milk production equal to 0.85 and 1.00, respectively, by the CNCPS, the coefficients 0.68 and 0.66 were used according to Doepel et al., 2004 [49] and the authors' own data [69]. Norms obtained using this model in lysine and methionine in milk production and maintenance in percentage of metabolizable protein (MP) were 7.28 and 2.4%, which is identical to the NRC – 2001 standards, equal to 7.2 and 2.4 % respectively, obtained by dose – response method based on dozens of experiments. The norm of histidine was 3.5%, which closely corresponds to the indicator of 2.4 and 2.7 % MP [74], obtained by the incremental addition method. This indicates that the presented model is distinguished by sufficiently high accuracy and is comparable with the models developed by the dose – response method. However, the determination of the need of cows for amino acids in this model is much less expensive than the dose – response method. The need for the absolute amount of metabolizable essential amino acids (MEAA) for milk production (35 kg/d, yield milk protein 1103 gytt6) and maintenance cow - 600 kg, g/d: lysine - 178, methionine - 59, arginine - 119, histidine - 60, isoleucine - 138, leucine - 248, phenylalanine - 152, threonine - 134, tryptophan - 38, valine - 174; the need for only milk production, g/d: 130; 42; 81; 42; 95; 175; 98; 74; 25; 112; the need for only maintenance, g/d: 50; 16; 38; 20; 43; 73; 54; 60; 14; 64; the need for 1 kg of milk (31.5 g of protein) g/kg: 3.7; 1.2; 2.3; 1.2; 2.7; 5.0; 2.8; 2.1; 0.7; 3.2; need to maintain, g / kg 0.75: 0.41; 0.14; 0.31; 0.16; 0.35; 0.60; 0.44; 0.50; 0.11; 0.53. In addition, the article presents the norms of amino acids per 1 kg of dry matter (DM) ration. However, the proposed standards need a comprehensive assessment in the research and practice of dairy farming. Research is needed to improve the models and predict the MEAA in the rations in the following areas: studying the metabolism of amino acids in the body of cows and determining their costs for maintaining the digestive tract, tissues and organs, refining, on this basis, the utilization of amino acids for milk protein production and maintenance; the development of ideal amino-acid profile of low-protein diets, both due to the adjustment of natural ingredients, and through the use of amino acid preparations that are protected from disintegration in the rumen
387 kb

NEED OF DAIRY CATTLE IN ESSENTIAL AMINO ACIDS

abstract 1501906020 issue 150 pp. 195 – 235 28.06.2019 ru 3276
The article presents a factorial model for determining the needs of lactating cows in essential amino acids. The algorithm of the model uses fragments from the NRC – 2001 models [39], CNCPS – 200 [60], and research materials published in the world literature. Instead of the transformation coefficients of the metabolizable lysine and methionine for milk production equal to 0.85 and 1.00, respectively, by the CNCPS, the coefficients 0.68 and 0.66 were used according to Doepel et al., 2004 [49] and the authors' own data [69]. Norms obtained using this model in lysine and methionine in milk production and maintenance in percentage of metabolizable protein (MP) were 7.28 and 2.4%, which is identical to the NRC – 2001 standards, equal to 7.2 and 2.4 % respectively, obtained by dose – response method based on dozens of experiments. The norm of histidine was 3.5%, which closely corresponds to the indicator of 2.4 and 2.7 % MP [74], obtained by the incremental addition method. This indicates that the presented model is distinguished by sufficiently high accuracy and is comparable with the models developed by the dose – response method. However, the determination of the need of cows for amino acids in this model is much less expensive than the dose – response method. The need for the absolute amount of metabolizable essential amino acids (MEAA) for milk production (35 kg/d, yield milk protein 1103 gytt6) and maintenance cow - 600 kg, g/d: lysine - 178, methionine - 59, arginine - 119, histidine - 60, isoleucine - 138, leucine - 248, phenylalanine - 152, threonine - 134, tryptophan - 38, valine - 174; the need for only milk production, g/d: 130; 42; 81; 42; 95; 175; 98; 74; 25; 112; the need for only maintenance, g/d: 50; 16; 38; 20; 43; 73; 54; 60; 14; 64; the need for 1 kg of milk (31.5 g of protein) g/kg: 3.7; 1.2; 2.3; 1.2; 2.7; 5.0; 2.8; 2.1; 0.7; 3.2; need to maintain, g / kg 0.75: 0.41; 0.14; 0.31; 0.16; 0.35; 0.60; 0.44; 0.50; 0.11; 0.53. In addition, the article presents the norms of amino acids per 1 kg of dry matter (DM) ration. However, the proposed standards need a comprehensive assessment in the research and practice of dairy farming. Research is needed to improve the models and predict the MEAA in the rations in the following areas: studying the metabolism of amino acids in the body of cows and determining their costs for maintaining the digestive tract, tissues and organs, refining, on this basis, the utilization of amino acids for milk protein production and maintenance; the development of ideal amino-acid profile of low-protein diets, both due to the adjustment of natural ingredients, and through the use of amino acid preparations that are protected from disintegration in the rumen
257 kb

STUDYING THE EFFECT OF PROTECTED AMINO ACIDS, LYSINE AND METHIONINE ON MILK PRODUCTION AND HEALTH OF HIGHLY PRODUCTIVE COW

abstract 1552001016 issue 155 pp. 207 – 232 31.01.2020 ru 159
The article discusses the relevance of the use of protected amino acids (lysine and methionine) in animal husbandry of the Krasnodar region, using the example of the farm "Krasnodar". The highest milk yield was obtained from cows with the combined addition of lysine and methionine in their diet. In relation to control (CR), the average daily milk yield in the group with combined additives (CR+L+M) was 38.4 kg/day. In addition, there was a positive effect of lysine and the combined additive (CR+L+M) on protein and fat in milk. Protected methionine (CRM) had no effect on the yield of fat and protein in milk. It was noted that additives of protected amino acids in groups with lysine and combined amino acids reduced the cost of dry matter (DM) and metabolizable energy (ME) per kg of milk. The results of our studies have shown that the productive milk response and its components are affected by the amount of the first limiting amino acid in the diet. Also, the supply of protected lysine changed the plasma concentration of animals and improved the availability of amino acids for milk protein synthesis
.