External characteristics adults cows of ukrainian black and white dairy breed

Abstract

The results of the evaluation exterior of the animals Ukrainian black and white dairy cattle in the western region of Ukraine. Studies conducted on animals Ukrainian black and white dairy cattle in the «Milk River» farm in the Sokal and Brody offices breeding reproducers «Breeder» Lviv region and plant breeding «Yamnytsya» Ivano-Frankivsk region. Exterior animals was assessed by measurement of body articles. By value measurements calculated indices of body structure cows. Weight-size factor determined by the formula D.T. Vinnychuka and P.N. Merezhko. The results of research were treated by variational statistics G.F. Lakin. Adults cows of Ukrainian black and white dairy breed for exterior fit the type of dairy animals. Measurements body cows are: height at the withers – 135,6–136,5 depth of chest – 75,1–77,1 width chest – 46,2–48,6, chest girth for by shoulder – 197,0–201,2, oblique body length – 161,4–163,6 width in clubs – 54,5–57,2 girth metacarpus – 19,1–19,5 cm. By oblique trunk length and girth metacarpus, and in the «Milk River» farm Sokal offices and plant breeding «Yamnytsya» also for girth at breast for by blades are dominated by target parameters for the desired type of animal. By other body measurements investigated cows do not reach target parameters for the desired type of animal. Further breeding work with this array of animals should be directed to increase the linear dimensions of the body, with particular attention paid to the width of the chest. Indices body structure cows in farms of different characteristic type of dairy animals. Surround dimensions of the animals constituted 494,9–501,4 cm weight-size factor – 1,08–1,15. In cows of all farms the ratio of live weight and measurements body was typical for relatively stretched animals.

Вплив Методів Підбору Батьківських Пар На Мінливість Селекційних Ознак Худоби Айрширської Породи

“…На думку багатьох науковців, ефективність селекції неможлива без лінійного розведення, оскільки цей метод дає змогу закріпити в потомстві найбільш цінні особливості видатних генотипів для отримання від них потомства з високими ознаками продуктивності [3][4][5]. Одним з найбільш вдалих прикладів чистопородного розведення молочної худоби у світі є голштинська порода, але при цьому кожна країна розробляє відповідні програми селекції та методи оцінки тварин [6][7].…”

Influence of cattle breed combinations on milk production: results of the Analysis of Variance

“…Black-and-white cattle are among the best and most popular dairy breeds in our country. Black-and-white Holstein cattle are characterized by exceptionally high milk productivity, which is widely used as an improvement breed in the improvement of many breeds, especially in countries with developed livestock production (Gerasimchuk et al, 2003;Kuziv, 2017). Protein production has been studied on cows of the Slovak spotted breed (Bujko et al, 2019) during 300 days of lactation; milk contained an average of 3.408% protein, 2.788% casein, and 0.619% whey protein.…”

Use of Holstein bulls in improvement of black pied cattle

“…Breeding and productive traits of dairy cattle depend on many factors [4][5][6][7]. Among them, the genotype of animals takes an important place [8,9].…”