Dairy Productivity of First-calf Cows Depending on Their Lineage
Year: 2023
Type: article
Abstract: Studies on the milk productivity of cows after the first lactation, depending on the lineage, were con-ducted at Konstantinovo CJSC in the Penza region, where three groups of Holstein cows were formed. Each group of cows belonged to a specific lineage: the first group included the daughters of bulls of the Vis Back Ideal 1013415 lineage, the second – Montwick Chieftain 95679, the third – Reflection Sovering 198998. The following indicators were evaluated: milk yield on average per lactation, milk yield for 305 days of lactation, milk yield for 100 days of lactation, average percentage of fat in milk and amount of milk fat, mass fraction and amount of milk protein. As a result of the research, it was found that the second group of cows that be-longed to the Montwick Chieftain 95679 lineage stood out in several aspects: the animals showed high productivity, the average milk yield during the first lactation was 8941.72 kg, which exceeded the groups of the Vis Back Ideal 1013415 lineage (p < 0.01) and Reflection Sovering 198998 lineage; the indicator of fat and protein content in milk was approximately the same in all groups of cows, but cows of the Montwick Chieftain 95679 lineage stood out with the highest values, this group also had the highest indicators of milk fat and protein obtained. Thus, the studies have confirmed that cows of the Montwick Chieftain 95679 lineage manifest themselves as high-yielding and produce milk with a high fat and protein content.
Source: Нива Поволжья
Language: English
Subfield: Genetics
Domain: Life Sciences
SDG: Zero hunger
Open Access status: diamond
OpenAlex ID: W4409306264