UDC 636.2.083+636.2.034.4
DOI 10.36461/NP.2024.72.4.023

EFFECT OF HOUSING METHODS ON DAIRY PRODUCTIVITY AND PRODUCTIVE LONGEVITY OF COWS
A.C. Livchikov, graduate student, T.V. Shishkina, Candidate of Agricultural Sciences, Associate Professor,
M.N. Nevitov, Candidate of Biological Sciences, Associate Professor
Penza State Agrarian University,
Penza, Russia, tel. 8-(8412)628-380, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

The assessment of the effect of the method of housing on the indicators of dairy productivity and productive longevity of cows was carried out in the conditions of ZAO Konstantinovo and the Ramzai Educational and Experimental Farm of Penza State Agrarian University. The animals were divided into groups, taking into account the method of housing and their linear affiliation. When assessing milk productivity, the following indicators were taken into account: the number of milking days, milk yield for the entire lactation period and for 305 days of lactation, the mass fraction of fat and protein in milk, the amount of milk fat and protein per lactation. As a result of the assessment of animals by milk productivity of the first lactation, it was found that milk yield for the entire lactation period and the amount of milk fat were higher in loose housing, on average by 10.0%. In the study of milk productivity indicators, depending on the line affiliation, it was noted that milk yield for the entire first lactation period was higher in loose housing of the Vis Back Ideal 1013415 line by 1346 kg or 11.3%. When evaluating cows for the third lactation, it was found that in tethered housing, the Reflection Sovering line had the highest milk yield for the entire lactation period by 26.3%, and milk yield for 305 days by 18.7%. The amount of milk fat in the third lactation is higher in tethered housing in the Vis Back Ideal 1013415 line with a difference of 78 kg. To study productive longevity the following indicators were taken: indicators as the number of milking days, lifetime milk yield, duration of use in lactation, milk yield per one day of life and lactation, duration of the service period and body weight. As a result of the research, the duration of productive use was higher in tethered housing cows by 0.85 of lactation or by 14.4%, milk yield per one day of life and lactation was higher in loose housing cows. Depending on the line affiliation, it was found that the duration of productive use and lifetime milk yield was higher in tethered Vis Back Ideal 1013415 line, as well as milk yield per one day of life and lactation.
Keywords: loose housing, tethered housing un, milk production, milk yield, service period, productive use.

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