Характер и формы наследования племенной ценности быков голштинской породы
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КРУГЛЯК, А., КРУГЛЯК, Т.. Характер и формы наследования племенной ценности быков голштинской породы. In: Inovații în zootehnie și siguranța produselor animaliere – realizări și perspective: dedicata celei de-a 65-a aniversări de la fondarea Institutului științifico-Practic de Biotehnologii în Zootehnie și Medicină Veterinară, 30 septembrie - 1 octombrie 2021, Maximovca. Maximovca: "Print-Caro" SRL, 2021, pp. 370-376. ISBN 978-9975-56-911-8.
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Inovații în zootehnie și siguranța produselor animaliere – realizări și perspective 2021
Conferința "Inovații în zootehnie și siguranța produselor animaliere – realizări și perspective"
Maximovca, Moldova, 30 septembrie - 1 octombrie 2021

Характер и формы наследования племенной ценности быков голштинской породы


Pag. 370-376

Кругляк А., Кругляк Т.
 
Институт разведения и генетики животных им.М.В. Зубца НААН
 
 
Disponibil în IBN: 18 octombrie 2021


Rezumat

The aim of the research was to identify additive and non-additive forms of the breeding value inheritance of Holstein bulls by milk yield of their daughters in the conditions of intra-breeding. The phenotypic manifestation of the additive form of inheritance of breeding value by milk yield (intermediate and parental dominance) was in 334 (82.2%) bulls, and non-additive form (over-dominance and regression) – in 72 (17.8%) including: over-dominance in 55 (13.5%) and regression in 17 heads (4.2%) established. The variability of the breeding value of sons by milk yield is depended from the forms of its inheritance. The relative variability of breeding value by milk yield along the line "father – son" and "mother – son" depends on the form of its inheritance. The coefficient of phenotypic correlation between the breeding value of parents and sons in the intermediate form of inheritance is +0.524 ± 0.043 and increases with parental dominance to +0.907 ± 0.040 and +0.985 ± 0.006, and over-dominance to +0.887 ± 0.044 and +0.905 ± 0.033, at high statistical significant. Inheritance by non-additive form (over-dominance) is more effectively associated with increasing of breeding value by milk yield their sons than by the additive form.

Cuvinte-cheie
quantitative sign, breeding value, form of inheritance, intermediate inheritance, dominance, over-dominance, correlation coefficient