Exterior and Body Types of Cows with Different Levels of Dairy Productivity

The research aimed to study the dynamics of changes in selection and genetic parameters body, determine relationship between productive qualities exterior cows population Holsteinized black-and-white Kholmogory cattle Udmurt Republic. Cows with a productivity level more than 8000 kg milk for 305 days lactation had relatively high indicator length coxal area (by 2.0 2.3%, P<0.05) depth loin 1.3 1.5%) slight difference sacrum. High-productive smallest average conformation index body type 3.0%, P<0.05), which is evidence proportionality namely, optimal ratio volume trunk animal growth. harmony bodybuilding also evidenced by area, defined as length. harmonious having lowest value this 3.8%, P<0.01). A positive correlation was found conformational (r = +0.26), +0.38), index. origin animals definite impact on dairy production. wes back ideal line significantly (P<0.01) outperform their mates reflection sovereign lines 693.65 (9.9%) Montvic Chieftainby 827.82 (12.1%). quality indicators testifies an insignificant both fat content 0.02-0.03%) protein milk.