Exterior Features of Cows Firstborn of Sumy Intrabreed Type of Ukrainian Black-and-White Dairy Cattle, Estimated by the Method of Linear Classification

Loboda, A. V.; Bardash, Dmitryi

doi:10.31073/abg.57.11

Cited by 5 publications

(2 citation statements)

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“…are doubly ionized Ar atoms. They are also formed in the ion source of the mass spectrometer as a result of ionization of Ar atoms by electron impact [7,8]. Comparing the intensities of the mass spectrometric peaks of the residual atmosphere of the vacuum chamber (Fig.…”

Section: Resultsmentioning

confidence: 99%

“…Using the dosing valve (7) into the chamber, directly into the area of the open ion source of the analyzer of the mass spectrometer МХ7304, it is possible to inject small amounts of reference gas from the cylinder (5) to calibrate the mass spectrometer. When researching air, the cylinder with the reference gas is replaced by a container with the investigated air.…”

Section: Experimental Methodology and Techniquementioning

confidence: 99%

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Mass Spectrometric Study of the Chemical Composition of the Gas Environment in the Zone of Electrospark Alloying

Loboda¹,

Zubko²,

Khursenko³

et al. 2023

J. Nano- Electron. Phys.

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The article presents the results of mass-spectrometric studies of changes in the composition of the air environment in the restoration area of worn-out working parts' surfaces obtained using a monopole gas mass spectrometer МХ7304. The restoration of worn working parts' surfaces was carried out by the traditional method of electric arc welding by surfacing in a protective argon environment on steel 12Х18Н10Т wearresistant coating with OK61.30 grade electrodes. The electrospark alloying method was also used using the Elitron-52A installation. As a result of the studies, it was found that no toxic gases appear in the composition of the air in the area of electrospark alloying. At the same time, the presence of a large amount of carbon dioxide CO2 and unstable nitric oxide NO was found in the composition of the air in the area of electric arc welding. Both of these gases are toxic even in small quantities. On the basis of the experimental results obtained, a conclusion was made about the environmental safety of the method of electric spark alloying in the restoration of worn working parts' surfaces in comparison with the traditional method of electric arc welding.

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Section: Resultsmentioning

confidence: 99%

Section: Experimental Methodology and Techniquementioning

confidence: 99%

Mass Spectrometric Study of the Chemical Composition of the Gas Environment in the Zone of Electrospark Alloying

Loboda¹,

Zubko²,

Khursenko³

et al. 2023

J. Nano- Electron. Phys.

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The Effect of the Type of Body Build of Cows on Their Milk Output and Milk Quality

Admin

Admina

Помитун

et al. 2023

STBIAS

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The presented article gives the results of evaluation of the body build type of firstling cows of Ukrainian black and white dairy breed, there are determined the influence of linear features of body build and udder on their milk output and quality and also the relations between these indicators in the form of regression equations. It was revealed that the average daily milk output of cows had a probable correlation influence with height, body depth, width of loin, rear udder attachment, central ligament, udder depth. Average milk fat content had a probable correlation with rear udder attachment and central ligament, while average protein content had a probable correlation with their height, chest width, body depth, butt width and front udder attachment, indicating a weak positive correlation between these parameters. A probable correlation between the average somatic cell content and the linear estimate of body type indicators was found only with the estimate of udder depth, central udder ligament and posterior dugs position. In the course of the research it was revealed that the average daily milk output of firstlings was likely influenced by the following attributes of linear estimation of the type of body build: height, breast width, angularity, butt width, posterior attachment of udder, udder depth, central ligament and posterior dugs location. By the results of the researches the regression model of prognostication of the average daily milk output of the firstling cows by the values of the linear estimation of the body build type of the cows is developed, that will allow making the decision on expediency of their further utilization in the second month of lactation. The proved models for predicting fat and protein content percentages in milk should be used for evaluation of firstling cows as auxiliary ones. There were created the models for prediction of number of mastitis cases in firstlings and content of somatic cells in milk on the basis of values of indicators of linear estimation of body type of cows. Keywords: dairy cows, body build, linear estimate, daily output, fat and protein content percentages, somatic cells, regression model.

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The current state of interbreed types of Ukrainian main dairy breeds

Pochukalin

Pryima

Rizun

2021

Tehnologìâ virobnictva ì pererobki produktìv tvarinnictva

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The research was carried out on domestic breeds of dairy cattle, namely the Ukrainian black-and-white dairy cattle with a total breeding stock population of 100778 and the Ukrainian red-and-white dairy cattle - 35270. The material was based on the structural formations (intrabreed types) - Southern (6528 heads in 12 herds), Central-eastern (49001 heads in 69 herds), Western (15746 heads in 19 herds), Polissya (27031 heads in 38 herds) and Sumy (2472 heads in 4 herds), they belong to the Ukrainian black-and-white dairy cattle, and the Central one (23822 heads in 41 herds), South-eastern (8431 heads in 16 herds), Prykarpattia (3017 heads in 3 herds) to the Ukrainian red-and-white dairy cattle. It is established that intergroup differentiation was observed on quantitative and qualitative indicators. Thus, the highest average hopes were observed in cows of the Central-eastern (7640 kg) and the South-eastern (7184 kg) types. In other structural formations, milk productivity ranged from 6012 kg to 6951 kg. Live weight of cows of the Western type is 553 kg, with low amplitude of other types (560 kg… 579 kg). The range of the main components of milk in the studied intrabreed types in terms of fat and protein content is 3,67%… 4,04% and 3,13%… 3,27%, respectively. In each intrabreed type there is a selection nucleus for selection of the best cows and obtaining valuable offspring from them, the analysis of which showed a tendency to increase the milk yield of lactating cows by an average of 457 kg and their live weight - by 11 kg. Also, the main components of milk have a fluctuating level, which does not depend on lactation and intrabreed types, which in turn may indicate inadequate selection for them. According to the analysis of the distribution of cows by calving, a high share of first-borns in the structure of types was noted, which ranges from 27,3% in the Western to 41,2% in the South-eastern types. Key words: breed, intra-breed type, milk productivity, live weight, breeding stock population, herd structure, age of first calving.

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Exterior Features of Cows Firstborn of Sumy Intrabreed Type of Ukrainian Black-and-White Dairy Cattle, Estimated by the Method of Linear Classification

Cited by 5 publications

References 1 publication

Mass Spectrometric Study of the Chemical Composition of the Gas Environment in the Zone of Electrospark Alloying

Mass Spectrometric Study of the Chemical Composition of the Gas Environment in the Zone of Electrospark Alloying

The Effect of the Type of Body Build of Cows on Their Milk Output and Milk Quality

The current state of interbreed types of Ukrainian main dairy breeds

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