Comparative Analysis of the Blup-Estimates of Servicing Bulls by the Exterior of Daughters and Their Indices by the Official Instructions (Linear Assessment System)

Chindaliyev, A.E.; Харитонов, С Н; Sermyagin, A.A.; Konte, A.; Baimukanov, A.D.

doi:10.32014/2021.2518-1483.114

Cited by 3 publications

(5 citation statements)

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“…Assessment of the breeding value of stud bulls by productive indicators of daughters was carried out on the basis of the existing Instructions (Berry et al, 2019;Baimukanov et al, 2021). Analysis of the results of the study was carried out using generally accepted methods of statistical processing of data used in biological research (Bourdon, 1998;Druet et al, 2001;Abugaliyev et al, 2019;Chindaliyev et al, 2021;Bekenov et al, 2019;Merkuryev & Shangin-Berezovsky, 1983;Sushkov, 2021;Van Vleck, 1974;Zelenkov et al, 2019;).…”

Section: Methodsmentioning

confidence: 99%

Assessment of the breeding value of Holstein black-and-white stud bulls in the Republic of Kazakhstan

et al. 2022

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Currently, the dairy cow industry's primary goal is to reach maximum indicators in the manufacture of high-quality goods. It is necessary to utilize high-quality animals in breeding and productive qualities to attain this goal. Numerous research and practical works have proven that stud bulls have a major impact on the genetic effect of animal stock correction: proper stud bull selection ensures maximal genetic development in animal production. Animals of the Holstein breed of various selections are used to enhance domestic black-and-white cattle (Canadian, American, Danish, etc.). The article presents the results of the assessment of stud bulls according to the Instructions in force in the Republic of Kazakhstan. As an object of research, information was used on first-calvers (daughters) who lactated in 2016-2017 in the breeding herds of the republican populations of Holstein cattle. In a comparative aspect, the analysis of the results of a study of the breeding qualities of the estimated bulls in the context of different years and in total is carried out. The necessity of applying new approaches to assessing the breeding value of stud bulls in dairy cattle breeding is established.

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Section: Methodsmentioning

confidence: 99%

Assessment of the breeding value of Holstein black-and-white stud bulls in the Republic of Kazakhstan

et al. 2022

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“…Determination of the level of genetic variability in the general phenotypic variability of linear parameters of the exterior in the dairy direction of cattle breeding is a priority in the evaluation of bulls (Chindaliyev et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

“…To increase dairy productivity, it is necessary to use the world's best gene pools (Bekenov et al, 2019;Chindaliyev et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

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Productive Traits and Reproductive Capacity of First-Calf Cows at Different Selection Options

Bissembayev¹,

Asylbekovich²,

Bassonov³

et al. 2023

OnLine Journal of Biological Sciences

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The research work is aimed at determining and establishing the degree of influence of various selection options on the productive and reproductive qualities of the first-calf cows of the black-and-white breed. The research results showed that according to the Parental Index of Cows (PIC), animals of the 5 th experimental group surpass their mates in the 2 and 3 groups in milk yield by 746 kg, with p≤0.05 and 1746 kg, with p≤0.001 and the difference in fat content is 0.07 and 0.01%, respectively. The same advantage in milk yield over the 3 experimental groups is possessed by the 1 st control and the 4 th experimental groups 1827 and 1885 kg, with p≤0.001. In terms of protein, group 3 cows are inferior to first-calf heifers of groups 1, 2, and 5 by 0.03, 0.08, and 0.09%, with a significant difference p≤0.01. Groups 1, 2, and 5 have superiority over animals of the 4 th -0.03%, with p≤0.05, as well as 0.05 and 0.06%, with p≤0.01. The Realization of the Genetic Potential (RGP) in milk yield for 305 days of lactation was higher in the 5 th experimental group and amounted to 88.3%, which is 7.1% more than in the control, with p≤0.05. For milk fat, animals of groups 1 and 3 have a high potential of 99.5 and 99.9%. In terms of the mass fraction of protein, first-calf heifers of the 1st control and the 4 th experimental groups surpass their mates from group 3 by 2.1 and 1.8%, with p≤0.05. The control group has the most optimal indicator of the calving period (406.5), while the tested ones exceed it by more than 40 days. The service period in all groups has been increased by almost 2 times. The highest calf crop (92.3%) and reproduction rate (0.92%) are observed in the control group.

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“…In conditions of intensive "use" of dairy cows, cattle breeding goes through a new stage in the spiral of its development, when the highest possible good quality products can be obtained only when the technical elements of technological processes directly depend on the biological characteristics of animals and the selection of cows has been successfully carried out according to suitability for breeding under conditions of industrial technology (Abugaliyev et al, 2019;Bekenov et al, 2019a;Zhumanov et al, 2020a;Shamshidin et al, 2021;Chindaliyev et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Exterior and Body Types of Cows with Different Levels of Dairy Productivity

Баймуканов¹,

Bissembayev²,

Batanov³

et al. 2022

American Journal of Animal and Veterinary Sciences

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The research aimed to study the dynamics of changes in the selection and genetic parameters of the body, to determine the relationship between the productive qualities and the exterior of cows in the population of Holsteinized black-and-white and Kholmogory cattle of the Udmurt Republic. Cows with a productivity level of more than 8000 kg of milk for 305 days of lactation had a relatively high indicator of the length of the coxal area (by 2.0 and 2.3%, P<0.05) and the depth of the loin (by 1.3 and 1.5%) with a slight difference in the length of the sacrum. High-productive cows had the smallest average conformation index of the body type (by 3.0%, P<0.05), which is evidence of the proportionality of the body, namely, the optimal ratio of the volume of the trunk to the animal growth. The harmony of bodybuilding is also evidenced by the index of the coxal area, defined as the ratio of the volume of the coxal area to the body length. High-productive cows had a more harmonious body, having the lowest value of this index (by 3.8%, P<0.01). A positive correlation was found between the conformational index of the body (r = +0.26), the index of the coxal area (r = +0.38), and the productive index. The origin of the animals had a definite impact on the level of dairy production. Cows of the wes back ideal line significantly (P<0.01) outperform their mates of the reflection sovereign lines by 693.65 kg (9.9%) and Montvic Chieftainby 827.82 kg (12.1%). The value of quality indicators of dairy productivity of cows testifies to an insignificant difference both in the fat content

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Comparative Analysis of the Blup-Estimates of Servicing Bulls by the Exterior of Daughters and Their Indices by the Official Instructions (Linear Assessment System)

Cited by 3 publications

References 1 publication

Assessment of the breeding value of Holstein black-and-white stud bulls in the Republic of Kazakhstan

Assessment of the breeding value of Holstein black-and-white stud bulls in the Republic of Kazakhstan

Productive Traits and Reproductive Capacity of First-Calf Cows at Different Selection Options

Exterior and Body Types of Cows with Different Levels of Dairy Productivity

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