Abstract:
Evaluation of animals for breeding Ukrainian Black-and-White dairy breed was carried out according to the method of linear
classification of type in the breeding farms of LLC "Vladana" and the experimental farm of the Institute of Agriculture of the NorthEast of the NAAS (EF IANE). The estimation of cows in the herd of BF "Vladana" (83.8 score) on this set of milk-type traits in comparison with peers of the EF IANE (82.3 score) showed a significant advantage of the former with a highly reliable difference of 1.5
score (P <0.001). The average estimate at the level of 84.2 and 83.0 score in cows of the herd of SF "Vladana" and NAAS EF IANE
indicated about fairly good development of their body. The best condition of limbs in animals of the herd BF "Vladana" with 83.5
score and slightly worse than in peers EF IANE (82.5 score) with a highly significant difference of 1.0 score (P <0.001) in favor of the
former. Udder in animals of the breeding farm "Vladana" with an average grade of 84.7 score was on the 2.3 score higher (P <0.001)
compared with peers in the EF IANE (82.4 score). In general, firstborn cows of controlled farms in the BF "Vladana" and EF IANE,
which were classified according to the final type assessment, received an average score of 84.2 and 82.8 of 88 possible for animals
of this age, which corresponded to the level on the international scale "Good Plus". The results of the estimation of first-born cows in
the controlled farms show that the degree of the main descriptive traits development of conformation, provided by the method of
linear classification, differed by significant intra-herd and inter-herd variability. A sufficient level of reliable positive relationship with
milk yield was found both by group traits, except for limbs, and by the vast majority of descriptive traits of the conformation, with
slightly higher correlation coefficients in cows of BF "Vladana". The determined phenotypic correlations between linear conformation
traits and milk yield per lactation indicate about their reliability in the selection of cows by productivity
