{"id":5832,"date":"2019-09-27T10:56:48","date_gmt":"2019-09-27T07:56:48","guid":{"rendered":"https:\/\/visnyk.mnau.edu.ua\/?p=5832"},"modified":"2019-10-01T11:07:20","modified_gmt":"2019-10-01T08:07:20","slug":"n102v2r2019pidpala","status":"publish","type":"post","link":"https:\/\/visnyk.mnau.edu.ua\/en\/n102v2r2019pidpala\/","title":{"rendered":"Highly Productive Cows of Holstein Breed Under Intensive Technology"},"content":{"rendered":"UDC\u00a0<\/strong>623.2.082<\/p>\n

DOI:<\/strong> 10.31521\/2313-092X\/2019-2(102)-12<\/p>\n

 <\/p>\n

T. Pidpala
\nYu. Matashnyuk<\/strong><\/p>\n

 <\/p>\n

\u00a0 \u00a0 \u00a0 Researches, on the evaluation of the development of traits in high-yielding Holstein breeds for intensive milk production technology, have established that the animals of the group \u201c> 9956\u201d had the advantage in terms of productivity. During the first lactation their milk yield was higher for 3829 kg (p <0.001) than at the first-born of the group \u201c<7936\u201d. Similarly, the advantage was established for the second, third and fourth lactations. The difference was 3021 kg (p <0.001), 2346 kg (p <0.001) and 1195 kg of milk, accordingly. It was found that the difference in milk fat by the first, second, third and fourth lactations was 149.5 kg (p <0.001), 113.5 kg (p <0.001), 100.3 kg (p <0.001) and 48.2 kg compared to low-yielding cows (group \u201c<7936\u201d). By the amount of milk protein, the probable differences were also found which are 122.7 kg (p <0.001), 98.9 kg (p <0.001), 82.6 kg (p <0.001) and 37.5 kg, accordingly.<\/em>
\n\u00a0 \u00a0 \u00a0The comparative analysis does not reveal differences in the fat and protein content of milk between animals in experimental groups. In cows of the group \u201c>9956\u201d fatty milk varied within the range of 3.91 … 4.02%, and protein digestibility was 3.22 … 3.32%, and in animals of the group “<7936\u201d – 3.91 … 4.03% and 3.22 … 3.34%, accordingly.<\/em>
\n\u00a0 \u00a0 \u00a0Such signs as milk yield, the amount of milk fat and protein during the second, third and fourth lactation are characterized by coefficients of high-level variability in the high-yielding cows. According to the cows of the group \u201c<7936\u201d, the tendency of variability of breeding traits is almost the same, however, some differences in the variability parameters especially in the fourth lactation are revealed.<\/em>
\n\u00a0 \u00a0 \u00a0It has been established that each lactation of cows is characterized by different indices of milk yield, milk fat and milk protein content. The same signs of productivity are differ from each other for different lactations and this is due to age-related changes in animals. According to the numbers of repeatability of the milk yield of highly productive cows (group \u201c>9956\u201d), it was determined that higher values \u200b\u200bof the coefficient are the characteristic for lactation I-II, I-III and II-III. Regarding the constancy of the amount of milk fat and protein for certain periods of economic use of cows, both high and low coefficients of repeatability were established.<\/em>
\n\u00a0 \u00a0 Based on the results of the conducted researches, it was found that cows, which showed a high level of productivity for the first lactation, will continue to increase their milk yield in the subsequent lactation, in the condition of proper maintenance for the welfare of the animals.<\/em><\/p>\n

\u00a0 \u00a0 Keywords:<\/strong> Holstein breed, highly productive cows, productivity over several lactations, repeatability of breeding traits.<\/em><\/p>\n

 <\/p>\n

References<\/strong><\/p>\n

    \n
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    UDC\u00a0623.2.082 DOI: 10.31521\/2313-092X\/2019-2(102)-12   T. Pidpala Yu. Matashnyuk   \u00a0 \u00a0 \u00a0 Researches, on the evaluation of the development of traits in high-yielding Holstein breeds for intensive milk production technology, have established that the animals of the group \u201c> 9956\u201d had the advantage in terms of productivity. During the first lactation their milk yield was […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[998],"tags":[986,1021],"aioseo_notices":[],"views":229,"_links":{"self":[{"href":"https:\/\/visnyk.mnau.edu.ua\/en\/wp-json\/wp\/v2\/posts\/5832"}],"collection":[{"href":"https:\/\/visnyk.mnau.edu.ua\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/visnyk.mnau.edu.ua\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/visnyk.mnau.edu.ua\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/visnyk.mnau.edu.ua\/en\/wp-json\/wp\/v2\/comments?post=5832"}],"version-history":[{"count":0,"href":"https:\/\/visnyk.mnau.edu.ua\/en\/wp-json\/wp\/v2\/posts\/5832\/revisions"}],"wp:attachment":[{"href":"https:\/\/visnyk.mnau.edu.ua\/en\/wp-json\/wp\/v2\/media?parent=5832"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/visnyk.mnau.edu.ua\/en\/wp-json\/wp\/v2\/categories?post=5832"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/visnyk.mnau.edu.ua\/en\/wp-json\/wp\/v2\/tags?post=5832"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}