{"id":3702,"date":"2017-12-30T09:09:46","date_gmt":"2017-12-30T07:09:46","guid":{"rendered":"https:\/\/visnyk.mnau.edu.ua\/?p=3702"},"modified":"2018-01-15T11:13:58","modified_gmt":"2018-01-15T09:13:58","slug":"n95v3r2017kramarenko","status":"publish","type":"post","link":"https:\/\/visnyk.mnau.edu.ua\/en\/n95v3r2017kramarenko\/","title":{"rendered":"Analysis of the linear models using to assess the influence of different factors on the productivity of dairy cows"},"content":{"rendered":"

UDC 636.2.034\/57.087<\/strong><\/span><\/p>\n

\u041e. Kramarenko, <\/strong><\/em>
\nO. Potryvaieva<\/strong><\/em><\/p>\n

To determine the influence of various factors on the milk yield of cows, we used a linear model of a mixed type, as a random factor, the genotype of a bull-producer, and as fixed – the number of lactation, the year of birth and the calving season of cows. In total, data on 526 lactations per 113 red steppe cows were included in the analysis, which were kept in the conditions of State Enterprise “Plepreproductor” Stepnoe “(Ukraine, Mykolayiv region) during 2001-2014.
\nData on milk yield for ten months (M1-M10) and 305 days of lactation (Y305) were used as a dependent variable. For individual gradations of factors, the estimates of the coefficients with the employer of the LSM procedure (Least squares means \u00b1 SE) were computed in the model, and the level of reliability of their deviation from zero (p-estimation) was determined. All calculations were carried out using the module “GLM” (General Linear Model) of the MiniTab software package v. 15.
\nWe have established an insignificant, but it is possible that some bulls-producers influence the hopes of their daughters during M2 … M4. Thus, it was found that the milk of the Altea was lower for the M2-M3 daughters, whereas the milk yield for M2 … M4 in the daughters of the bull of Narcissus was, on the contrary, higher than the average population value. In addition, the last almost 130 kg prevailed in relation to milk yield for 305 days of lactation.
\nThe first-borns were characterized by less milking during the first half of the lactation (especially, according to M1-M2), and by 416 kg inferior to the average population estimate. On the other hand, cows at the age of eighth lactation, on the contrary, showed significantly higher milk yield during the average lactation months (M4 … M8), and an average population estimate prevailed on 662 kg of milk.
\nIn addition, a high level of milk productivity was established for cows born in 2005, 2007 and 2009, which is primarily due to the increase in their milk productivity in the first half of lactation.
\nThe presence of a highly probable effect of the calving season on the level of milk productivity of cows is manifested primarily in the increase in milk yields (especially in M4 … M8) in January calving, and, conversely, in decline – with calving in June and July.<\/p>\n

Keyword:<\/strong> Linear models, number of lactation, year of birth, season of calving, dairy cattle.<\/em><\/p>\n

Analysis of the linear models using to assess the influence of different factors on the productivity of dairy cows. <\/a><\/p>\n

References:<\/strong>
\n1. Getya A. A., Dodenkhoff Y. Zastosuvannia BLUP-metodu pry orhanizatsii otsinky selektsiinoi tsinnosti svynei v Ukraini \/ A. A. Getya, Y. Dodenkhoff \/\/ Tekhnolohiia vyrobnytstva i pererobky produktsii tvarynnytstva. \u2013 2010. \u2013 Vypusk 3 (72). \u2013 S. 52-55.
\n2. Danshin V. A. Ocenka geneticheskoj cennosti zhivotnyh \/ V. A. Danshin \u2013 K. : Agrarna nauka, 2008. \u2013 180 s.
\n3. Sovremennye metody geneticheskogo kontrolya selekcionnyh processov i sertifikaciya plemennogo materiala v zhivotnovodstve \/ [N. A. Zinov’eva, P. M. Klenovickij, E. A. Gladyr’ i dr.]. \u2013 M. : RUDN, 2008. \u2013 329 s.
\n4. Kuznecov V. M. Metody plemennoj ocenki zhivotnyh s vvedeniem v teoriyu BLUP \/ V. M. Kuznecov. \u2013 Kirov : Zonal’nyj NIISKH Severo-Vostoka, 2003. \u2013 358 s.
\n5. Kramarenko S. S. Vykorystannia liniinykh modelei (BLUP) dlia otsinky pleminnoi tsinnosti koriv za molochnoiu produktyvnistiu \/ S. S. Kramarenko, O. I. Potryvaieva \/\/ Visnyk ahrarnoi nauky Prychornomoria. \u2013 2016. \u2013 Vyp. 2(2). \u2013 S. 187-192.
\n6. Kramarenko S. S. Novi metody matematychnogho modeljuvannja laktacijnykh kryvykh za dopomoghoju interpoljaciji \/ S. S. Kramarenko \/\/ V kn. : Materialy mizhnarodnoji naukovo-praktychnoji konferenciji \u00abNovitni tekhnologhiji skotarstva u \u0425\u0425\u0406 stolitti\u00bb (Mykolajiv, 4-6 veresnja 2008 r.). \u2013 Mykolajiv : MDAU, 2008. \u2013 S. 159-164.
\n7. Ryan B. F. MINITAB Handbook : Update for release 16 \/ B. F. Ryan, B. L. Joiner, J. D. Cryer. \u2013 Pacific Grove, CA, USA: Brooks\/Cole Publishing Co., 2012. \u2013 560 p.
\n8. Wood P. D. P. The relationship between the month of calving and milk production \/ P. D. P. Wood \/\/ Animal Science. \u2013 1970. \u2013 V. 12. \u2013 \u2116. 2. \u2013 P. 253-259.
\n9. Miller P. D. Joint influence of month and age of calving on milk yield of Holstein cows in the northeastern United States \/ P. D. Miller, W. E. Lentz, C. R. Henderson \/\/ Journal of Dairy Science. \u2013 1970. \u2013 V. 53. \u2013 \u2116. 3. \u2013 P. 351-357.
\n10. Ray D. E. Season and lactation number effects on milk production and reproduction of dairy cattle in Arizona \/ D. E. Ray, T. J. Halbach, D. V. Armstrong \/\/ Journal of Dairy Science. \u2013 1992. \u2013 V. 75. \u2013 \u2116. 11. \u2013 P. 2976-2983.
\n11. Ptak E. Interaction of age and month of calving with year of calving for production traits of Ontario Holsteins \/ E. Ptak, H. S. Horst, L. R. Schaeffer \/\/ Journal of Dairy Science. \u2013 1993. \u2013 V. 76. \u2013 \u2116. 12. \u2013 P. 3792-3798.
\n12. Abate A. L. Seasonal variation of milk persistency of Kenana\u00d7 Friesian crossbred dairy cows under confinement feeding in a hot environment \/ A. L. Abate, M. Atta, R. N. Anthony \/\/ Animal Science Journal. \u2013 2010. \u2013 V. 1. \u2013 \u2116. 1. \u2013 P. 13-18.<\/p>\n

Issue 3 (95), 2017<\/a><\/h4>","protected":false},"excerpt":{"rendered":"

UDC 636.2.034\/57.087 \u041e. Kramarenko, O. Potryvaieva To determine the influence of various factors on the milk yield of cows, we used a linear model of a mixed type, as a random factor, the genotype of a bull-producer, and as fixed – the number of lactation, the year of birth and the calving season of cows. […]<\/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":[793],"tags":[238,717],"aioseo_notices":[],"views":456,"_links":{"self":[{"href":"https:\/\/visnyk.mnau.edu.ua\/en\/wp-json\/wp\/v2\/posts\/3702"}],"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=3702"}],"version-history":[{"count":0,"href":"https:\/\/visnyk.mnau.edu.ua\/en\/wp-json\/wp\/v2\/posts\/3702\/revisions"}],"wp:attachment":[{"href":"https:\/\/visnyk.mnau.edu.ua\/en\/wp-json\/wp\/v2\/media?parent=3702"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/visnyk.mnau.edu.ua\/en\/wp-json\/wp\/v2\/categories?post=3702"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/visnyk.mnau.edu.ua\/en\/wp-json\/wp\/v2\/tags?post=3702"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}