Reproductive performances of Holstein cows with different milk fat to protein ratio during successive stages of lactation
Aim of study was to determine relationship between the energy status of cows, expressed through different milk fat to protein ratio values (FPR<1.0, 1.0-1.3 and >1.3), and their reproductive performances (interval from calving to first artificial insemination; calving to conception interval; i...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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University of Banja Luka - Faculty of Agriculture, Banja Luka
2015-01-01
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| Series: | Agroznanje |
| Subjects: | |
| Online Access: | https://scindeks-clanci.ceon.rs/data/pdf/2233-0070/2015/2233-00701503339J.pdf |
| _version_ | 1797205151751077888 |
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| author | Jotanović Stoja Mijatović Ratko Stančić Ivan Savić Đorđe Vekić Marinko |
| author_facet | Jotanović Stoja Mijatović Ratko Stančić Ivan Savić Đorđe Vekić Marinko |
| author_sort | Jotanović Stoja |
| collection | DOAJ |
| description | Aim of study was to determine relationship between the energy status of cows, expressed through different milk fat to protein ratio values (FPR<1.0, 1.0-1.3 and >1.3), and their reproductive performances (interval from calving to first artificial insemination; calving to conception interval; insemination index; pregnancy duration; intercalving interval) during succesive stages of lactation (day 15th to 45th; day 46th-75th; day 76th-105th; day 106th to 135th of lactation). The study included a total of 350 fresh calved Holstein cows (121 primiparous, 115 secundiparous and 114 cows which calved three or more times), kept and fed in usual farm conditions. Milk samples were taken during morning milking, and FPR value was calculated from concentrations of milk fat and protein for all milk samples. Reproductive parameters were calculated from farm data. Values of all reproductive parameters, except pregnancy duration, had generally increasing trend in all groups during successive stages of lactation. During successive stages of lactation, cows with optimal FPR values had generally better reproductive performances, compared to cows with increased or decreased FPR values, which indicates importance of FPR monitoring during early lactation for timely detection of cows predisposed for poor reproductive results. |
| first_indexed | 2024-04-24T08:46:34Z |
| format | Article |
| id | doaj.art-807170637cd14a308f4acee0f312df5e |
| institution | Directory Open Access Journal |
| issn | 2233-0070 |
| language | English |
| last_indexed | 2024-04-24T08:46:34Z |
| publishDate | 2015-01-01 |
| publisher | University of Banja Luka - Faculty of Agriculture, Banja Luka |
| record_format | Article |
| series | Agroznanje |
| spelling | doaj.art-807170637cd14a308f4acee0f312df5e2024-04-16T13:34:59ZengUniversity of Banja Luka - Faculty of Agriculture, Banja LukaAgroznanje2233-00702015-01-0116333935110.7251/AGREN1503339J2233-00701503339JReproductive performances of Holstein cows with different milk fat to protein ratio during successive stages of lactationJotanović Stoja0Mijatović Ratko1Stančić Ivan2https://orcid.org/0000-0002-2514-7944Savić Đorđe3https://orcid.org/0000-0002-0590-4151Vekić Marinko4University of Banja Luka, Faculty of Agriculture, Banja Luka, Republic of Srpska, Bosnia and HerzegovinaVeterinary Station Banja Luka, Banja Luka, Republic of Srpska, Bosnia and HerzegovinaUniversity of Novi Sad, Faculty of Agriculture, Novi Sad, SerbiaUniversity of Banja Luka, Faculty of Agriculture, Banja Luka, Republic of Srpska, Bosnia and HerzegovinaUniversity of Banja Luka, Faculty of Agriculture, Banja Luka, Republic of Srpska, Bosnia and HerzegovinaAim of study was to determine relationship between the energy status of cows, expressed through different milk fat to protein ratio values (FPR<1.0, 1.0-1.3 and >1.3), and their reproductive performances (interval from calving to first artificial insemination; calving to conception interval; insemination index; pregnancy duration; intercalving interval) during succesive stages of lactation (day 15th to 45th; day 46th-75th; day 76th-105th; day 106th to 135th of lactation). The study included a total of 350 fresh calved Holstein cows (121 primiparous, 115 secundiparous and 114 cows which calved three or more times), kept and fed in usual farm conditions. Milk samples were taken during morning milking, and FPR value was calculated from concentrations of milk fat and protein for all milk samples. Reproductive parameters were calculated from farm data. Values of all reproductive parameters, except pregnancy duration, had generally increasing trend in all groups during successive stages of lactation. During successive stages of lactation, cows with optimal FPR values had generally better reproductive performances, compared to cows with increased or decreased FPR values, which indicates importance of FPR monitoring during early lactation for timely detection of cows predisposed for poor reproductive results.https://scindeks-clanci.ceon.rs/data/pdf/2233-0070/2015/2233-00701503339J.pdfcowfprreproductive performances |
| spellingShingle | Jotanović Stoja Mijatović Ratko Stančić Ivan Savić Đorđe Vekić Marinko Reproductive performances of Holstein cows with different milk fat to protein ratio during successive stages of lactation Agroznanje cow fpr reproductive performances |
| title | Reproductive performances of Holstein cows with different milk fat to protein ratio during successive stages of lactation |
| title_full | Reproductive performances of Holstein cows with different milk fat to protein ratio during successive stages of lactation |
| title_fullStr | Reproductive performances of Holstein cows with different milk fat to protein ratio during successive stages of lactation |
| title_full_unstemmed | Reproductive performances of Holstein cows with different milk fat to protein ratio during successive stages of lactation |
| title_short | Reproductive performances of Holstein cows with different milk fat to protein ratio during successive stages of lactation |
| title_sort | reproductive performances of holstein cows with different milk fat to protein ratio during successive stages of lactation |
| topic | cow fpr reproductive performances |
| url | https://scindeks-clanci.ceon.rs/data/pdf/2233-0070/2015/2233-00701503339J.pdf |
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