ЭлБиб

Ethological individuality as a sign of ayrshire cattle

breeding

Kudrin Aleksandr Grigorievich, Doctor of Sciences (Biology), Professor, Head of the

Zootechnics and Biology Chair

e-mail:

Federal StateBudgetaryEducational Institutionof Higher Education theVereshchagin

State Dairy Farming Academy of Vologda

Sedunova Tat’yana Valer’evna, Postgraduate

e-mail: stv_1006@

Federal StateBudgetaryEducational Institutionof Higher Education theVereshchagin

State Dairy Farming Academy of Vologda

Britvina Irina Vasil’evna, Candidate of Sciences (Agriculture), Associate Professor,

Head of the Internal Non-Infectious Diseases, Surgery and Obstetrics Chair

e-mail:

Federal StateBudgetaryEducational Institutionof Higher Education theVereshchagin

State Dairy Farming Academy of Vologda

Abstract.

Studies having been carried out on animals of Ayrshire breed show that

indexes of food, motion and total activity selection can be successfully used as selection

signs. Selection of cows on ethological individuality is accompanied by an increase of

their milk production. Animals with increased food activity, compared to cows with a

low one, have got the rise of milk yield per lactation by 686 kg. Ultra-active cows should

be mentioned particularly, productivity of them opposite to infrapassive ones increases

by 49%.

Keywords:

cows, Ayrshire breed, ethological activity indexes, milk yield.

Молочнохозяйственный вестник, №1 (21), I кв. 2016

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