Characterization of High-Producing Cows by their Immunogenetic Status

Гридина, С. Л.; Гридин, В Ф; Leshonok, O. I.

doi:10.2991/agrosmart-18.2018.49

Cited by 13 publications

(7 citation statements)

References 1 publication

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“…In 2002, the Ural type of black-and-white cattle was officially registered with a 75% share of blood relation to the Holstein breed. In subsequent years, the use of pure-bred Holstein stud bulls continued, and the share of blood relation of the breeding stock increased to 91% or more for the Holstein breed [22][23][24][25][26][27]. There is not enough data on the productive qualities of modern animals, and therefore the study of their milk productivity is relevant and has practical significance.…”

Section: Introductionmentioning

confidence: 99%

The relationship of productive qualities of holshteinized black-and-white cattle along the lines

et al. 2022

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In the Sverdlovsk region, holstinized black-and-white cattle of the Ural type is bred, which is represented by large, highly productive animals with a high genetic potential for productivity. The purpose of the work is to study the productive qualities of Holsteinized black-and-white cattle with a high proportion of blood relationship in the Holstein breed, depending on the linear affiliation and their relationship. There are no differences in milk yield and milk quality indicators in cows of different lines. All cows were of dairy productivity, as evidenced by the high coefficient of milk production. There was a significant difference between groups of cows of different lines in terms of the lactation stability coefficient, which was higher in the group of cows of the Reflection Sovering line (P≤0.05). The figure clearly shows that the correlation between milk yield and milk quality indicators – FDM and PDM in milk is negative, that is, with an increase in milk yield, there is a decrease in FDM and PDM in milk. A positive correlation has been established between the phenotypic trait (live weight) and their productive qualities – milk yield and lactation stability coefficient, which makes it possible to recommend selection by live weight.

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Section: Introductionmentioning

confidence: 99%

The relationship of productive qualities of holshteinized black-and-white cattle along the lines

et al. 2022

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“…This made it possible to create an array of highly productive black-and-white dairy cattle, which in 2002 was officially registered as a new Ural type of black-and-white breed. Animals of this type have high productivity indicators, but at the same time there is a decrease in the productive longevity of the breeding stock [17][18][19][20][21][22][23][24][25][26][27]. The assessment of the relationship between the productive indicators of the Ural type cows, depending on their age, is relevant and has practical significance.…”

Section: Introductionmentioning

confidence: 99%

Dynamics of correlation coefficients of economic and productive characteristics depending on the age of cows

et al. 2021

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In 2002, a new Ural type of black-and-white breed was officially registered. Animals of this type have high productivity indicators, but at the same time there is a decrease in the productive longevity of the breeding stock. The conjugacy of milk yield for lactation is established, which allows for the first lactation to carry out selection fory milk yield. The relationship of milk yield for the first lactation weakens with the age of the animals and becomes negative for the fifth lactation. The conjugacy of such characteristics as milk yield per lactation and fat mass fraction in milk varies both by lactation and relative to milk yield per lactation. The conjugacy between milk yield and protein in milk for lactation was negative with fluctuations from low to medium-negative. For 5 lactation, there is a high positive relationship between milk yield for the first lactation and protein mass fraction in milk for 5 lactation. There are fluctuations in the correlation coefficients for fat mass fraction in milk for lactations, the conjugation of the trait with each other remains positive in the period from the first to the 4 lactation, excluding the correlation coefficient of this indicator between 1 and 5 lactation.

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“…Obtaining it in the conditions of the zone of man-made pollution impact imposes special requirements on manufacturers to ensure the safety of the product. The use of natural feed additives with ion-exchange and adsorbing properties makes it possible to obtain a safe product [19][20][21][22][23][24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Morphological and biochemical parameters of cow blood when using chitosan preparations

et al. 2021

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The study of the effect of chitosan succinate use on the hematological indicators of dairy cows is relevant. It has been established that there was a clear tendency to increase in the number of white blood cells by 10.12% in animals of group 3 (P < 0.1) on the 10th day of the experiment in cows receiving low-molecular-weight chitosan succinate, in the second group the increase in this indicator by 2.94% was unreliable. On the 20th day of the experiment, an intensive increase in the number of white blood cells was observed in animals of both experimental groups by 14.63–17.38% (P≤0.01), respectively, for the experimental groups of cows. On the 10th day on the background of the use of low-molecular-weight chitosan (group 3), a significant decrease in the number of red blood cells was found, compared with the background, by 8.34% (P≤0.05). On the 20th day, the decrease in the number of red blood cells was already significant in both experimental groups, and their level was 6.09±0.33...6.38±0.20·109/l (P≤0.05), respectively. On the 60th day of the study, this trend was maintained only in group 3, and the concentration of red blood cells was lower by 12.64 (P < 0.05) compared to the initial values. By the 60th day, there was an increase in the level of hemoglobin index up to 126.12±9.10 g/l.

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Characterization of High-Producing Cows by their Immunogenetic Status

Cited by 13 publications

References 1 publication

The relationship of productive qualities of holshteinized black-and-white cattle along the lines

The relationship of productive qualities of holshteinized black-and-white cattle along the lines

Dynamics of correlation coefficients of economic and productive characteristics depending on the age of cows

Morphological and biochemical parameters of cow blood when using chitosan preparations

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