Breeding Index as an Economic Component of the Basis of Breeding Work in Dairy Cattle Breeding

Мельникова, Е Е; Харитонов, С Н; Yanchukov, I. N.; Ionova, L.V.; Ermilov, A. Yu.; Sermyagin, A.A.; Zinovieva, N. A.

doi:10.31442/0235-2494-2018-0-8-29-33

Cited by 4 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Физиологические предпосылки могут заключаться в том, что различные гены «включаются» и «выключаются» при изменении среды [16]. Подтверждением того, что одни и те же производители неодинаково проявляют себя на разных уровнях производства могут также служить и различия в принципах реализации продукции в отдельных регионах, которые вносят существенные коррективы в цели селекции, смещая ее направление [17].…”

Section: Reproductive Technologies Have Led To a Wide And Global Dist...unclassified

Relationship between evaluations of sires in pale-motley cattle population at different levels of management

Altukhova,

Yanchukov,

Savinov

et al. 2024

Аграрная наука Евро-Северо-Востока

View full text Add to dashboard Cite

Reproductive technologies have led to a wide and global distribution of genetic material from animals with high productivity. However, the distribution of semen from the same bulls to different regions (countries) may not always meet the expectations of livestock breeders. This aspect may be due to the fact that the genetic structure of the breeding stock, breeding goals and environmental conditions vary from region to region. The article presents the results of evaluating the breeding value of 286 sires used on the breeding stock of the pale-motley dairy cattle population in five regions of the Russian Federation (Belgorod, Voronezh, Kursk, Oryol regions and Altai Territory). The evaluation was carried out according to individual traits of daughters' milk productivity, and on multiple traits (selection index). Based on the results of the study, differences were identified in estimates of the breeding value of the same sires at the level of total information (population level) and in the herds of single regions (regional level). The accuracy of evaluating genotypes at the population management level was significantly higher (by 7–15 percent) than it was at regional levels. The correlations between the breeding value of the same sires at different levels of management (population-region) for single traits of daughter’s milk productivity were 0.522–0.960, for the complex of traits (selection index) – from 0.157 to 0.937. This indicates that when selecting the best sires at the level of an individual region, mistakes can reach 4–48 % for single milk productivity traits and from 6.3 to 84 % for their complex.

show abstract

Section: Reproductive Technologies Have Led To a Wide And Global Dist...unclassified

Relationship between evaluations of sires in pale-motley cattle population at different levels of management

Altukhova,

Yanchukov,

Savinov

et al. 2024

Аграрная наука Евро-Северо-Востока

View full text Add to dashboard Cite

show abstract

“…SI белок = 0.1244x 1 + 0.0605x 2 -0.0014x 3 + 0.0002x 4 + 0x 5; SI UDC = 96.185x 1 + 4.5493x 2 -1.8268x 3 + 1.0274x 4 + 0.0001x 5; SI FLC = 68.192x 1 -6.8651x 2 -4.7299x 3 -0.0698x 4 + 1.0000x 5 Путем взвешивания субиндексов на экономическую ценность каждого признака проведена оценка весовых коэффициентов в соответствии с существующей на данный момент экономической ситуацией в регионе. Вместе с тем, руководствуясь закупочными ценами на сырое молоко, его качественные показатели, а так же учитывая затраты на его производство, установлены следующие экономические веса: для удоя -3; выхода жира -3; выхода белка -4; индекса вымени UDC -1; индекса ног FLC -1.…”

Section: гдеunclassified

“…Во избежание ошибок и недостаточно обоснованных выводов при проведении комплексной оценки племенной ценности коров важно понимать не только направление и силу взаимосвязей между селекционными признаками, но и наиболее точно определять весовые коэффициенты комплексного селекционного индекса, так как для разных пород скота структура уравнений племенной ценности изменяется [5][6].…”

Section: Introductionunclassified

Breeding Index Modeling for Airshire Dairy Cattle With Application of Exterior Parametres

Romanova¹,

Tulinova²

2021

Vestnik of Ulyanovsk SAA

View full text Add to dashboard Cite

The article presents results of selection efficiency of potential parents in Ayrshire breed using IAYR multiple-factor selection index, which includes productivity traits such as milk yield, fat and protein yield and integrated exterior parametres: UDC udder index and FLC leg index. As an original data array, a sample was generated with parameters for milk productivity and exterior characteristics of 574 Ayrshire first-calf heifers, which are daughters of 21 bulls from the leading breeding farm of Leningrad region. Calculation of phenotypic and genetic correlations was carried out in the course of the study, which revealed the greatest paratypical relationship between milk yield and fat yield rp = 0.912 at p <0.001, and the highest genetic relationship was noted between milk yield and protein yield rg = 0.960 at p <0.001. A high value of heritability coefficient for milk yield was established, which amounted to h2 = 0.506, which is connected with usage of imported servicing bulls with high genetic potential for herd reproduction. To determine the values of index weight coefficients, the variance and covariance components of variability of the studied parametres were calculated. Economic components of the parametres included in the developed equation are formed. As a result of selection modeling with an intensity of 10% according to the constructed equation of the productive-exterior index IAYR, a significant and reliable advantage in milk production by 1899 kg of milk was established in comparison with other animals, in terms of fat yield - by 64.7 kg and protein yield - by 51.7 kg.

show abstract

Productivity of the servicing bulls progeny with different index scores

Kovalova

Lapina

Sulyga

et al. 2023

Sib. vestn. s-h. nauki

View full text Add to dashboard Cite

The problem of studying the degree of influence of the index "Period of productive life/productive longevity" of the servicing bulls on the duration of productive use of their progeny is not sufficiently covered in the scientific literature, which substantiates the relevance of the research. A comparative assessment of economically useful features of the daughters of servicing bulls with the index value from 103 to 117 has been carried out. Dynamics of the experimental animals' mortality is determined in the period from birth to the end of the second lactation, the level of milk productivity according to the data for the first and second lactations. It was found that mortality among the daughters of the servicing bulls with an index equal to 103 and 105 was the highest in all physiological periods and amounted to 80.0 and 78.1% at the end of the experiment, respectively. In the groups of the daughters of the servicing bulls with index values of 109 and 117, the proportion of animals that died out reached 62.9 and 65.6%. The lowest productivity for the first and second lactations was recorded in the daughters of the servicing bull with the index value of 103 6760.2 and 7100.7 kg of milk. The daughters of the servicing bull with the index equal to 117 were distinguished by the highest milk productivity 7475.9 and 8158.3 kg of milk in two lactations. Analysis of the obtained data shows that fixation of servicing bulls to the breeding herd taking into account the "Period of productive life/productive longevity" index will make it possible to obtain more robust progeny with good productive qualities.

show abstract

Breeding Index as an Economic Component of the Basis of Breeding Work in Dairy Cattle Breeding

Cited by 4 publications

References 0 publications

Relationship between evaluations of sires in pale-motley cattle population at different levels of management

Relationship between evaluations of sires in pale-motley cattle population at different levels of management

Breeding Index Modeling for Airshire Dairy Cattle With Application of Exterior Parametres

Productivity of the servicing bulls progeny with different index scores

Contact Info

Product

Resources

About