Effect of dams’ parity and age on daughters’ milk yield in Norwegian Red cows
The effect of age and parity of dams on their daughters’ milk yield is not well known. Lactation data from 276,000 cows were extracted from the Norwegian Dairy Herd Recording System and analyzed using a linear animal model to estimate effects of parity and age within parity of dam. The 305-d milk yi...
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| Veröffentlicht in: | Journal of dairy science 2014-10, Vol.97 (10), p.6242-6249 |
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| creator | Storli, K.S. Heringstad, B. Salte, R. |
| description | The effect of age and parity of dams on their daughters’ milk yield is not well known. Lactation data from 276,000 cows were extracted from the Norwegian Dairy Herd Recording System and analyzed using a linear animal model to estimate effects of parity and age within parity of dam. The 305-d milk yield of daughters decreased as parity of dam increased. Daughters of first-parity dams produced 149kg more milk than did daughters of seventh-parity dams. We also observed an effect of age of dam within parity on 305-d milk yield of daughters in first lactation. Dams that were young at first calving gave birth to daughters with a higher milk yield compared with older dams within the same parity. The effect of age within parity of dam was highest for second-parity dams. Extensive use of heifers would have a systematic effect, and age and parity of dam should be included in the model when planning a future strategy. |
| doi_str_mv | 10.3168/jds.2014-8072 |
| format | Article |
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Lactation data from 276,000 cows were extracted from the Norwegian Dairy Herd Recording System and analyzed using a linear animal model to estimate effects of parity and age within parity of dam. The 305-d milk yield of daughters decreased as parity of dam increased. Daughters of first-parity dams produced 149kg more milk than did daughters of seventh-parity dams. We also observed an effect of age of dam within parity on 305-d milk yield of daughters in first lactation. Dams that were young at first calving gave birth to daughters with a higher milk yield compared with older dams within the same parity. The effect of age within parity of dam was highest for second-parity dams. Extensive use of heifers would have a systematic effect, and age and parity of dam should be included in the model when planning a future strategy.</description><identifier>ISSN: 0022-0302</identifier><identifier>EISSN: 1525-3198</identifier><identifier>DOI: 10.3168/jds.2014-8072</identifier><identifier>PMID: 25087031</identifier><language>eng</language><publisher>United States: Elsevier Inc</publisher><subject>Age Factors ; Animals ; Cattle - physiology ; dam age ; dam parity ; Female ; heifer ; Lactation - physiology ; Linear Models ; Milk - secretion ; milk yield ; Parity ; Pregnancy</subject><ispartof>Journal of dairy science, 2014-10, Vol.97 (10), p.6242-6249</ispartof><rights>2014 American Dairy Science Association</rights><rights>Copyright © 2014 American Dairy Science Association. Published by Elsevier Inc. 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Lactation data from 276,000 cows were extracted from the Norwegian Dairy Herd Recording System and analyzed using a linear animal model to estimate effects of parity and age within parity of dam. The 305-d milk yield of daughters decreased as parity of dam increased. Daughters of first-parity dams produced 149kg more milk than did daughters of seventh-parity dams. We also observed an effect of age of dam within parity on 305-d milk yield of daughters in first lactation. Dams that were young at first calving gave birth to daughters with a higher milk yield compared with older dams within the same parity. The effect of age within parity of dam was highest for second-parity dams. Extensive use of heifers would have a systematic effect, and age and parity of dam should be included in the model when planning a future strategy.</description><subject>Age Factors</subject><subject>Animals</subject><subject>Cattle - physiology</subject><subject>dam age</subject><subject>dam parity</subject><subject>Female</subject><subject>heifer</subject><subject>Lactation - physiology</subject><subject>Linear Models</subject><subject>Milk - secretion</subject><subject>milk yield</subject><subject>Parity</subject><subject>Pregnancy</subject><issn>0022-0302</issn><issn>1525-3198</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp1kLlOAzEURS0EIiFQ0iKXNBO8zlKiKCxSBAJBbTn2c3CYJdgTonT8Br_HlzAhgY7q6eoeXekdhE4pGXKa5hdzG4eMUJHkJGN7qE8lkwmnRb6P-oQwlhBOWA8dxTjvImVEHqIekyTPCKd99DB2DkyLG4etruLXxyde6ODbNda1xXoGuKm7Zjl7aSH81JUvX_HaQ2mxr_FdE1Yw87rGj2CxaVbxGB04XUY42d0Ber4aP41uksn99e3ocpIYQXmbCHAFTE1O5FQTw63OJaMupYWDTADL8oKnmdCQcZMWdMq5dJrrghdSZDQvUj5A59vdRWjelhBbVflooCx1Dc0yKipTwaWQVHRoskVNaGIM4NQi-EqHtaJEbSyqzqLaWFQbix1_tpteTiuwf_Svtg7ItgB0D757CCoaD7UB60NnU9nG_zP9DQ8UgF8</recordid><startdate>20141001</startdate><enddate>20141001</enddate><creator>Storli, K.S.</creator><creator>Heringstad, B.</creator><creator>Salte, R.</creator><general>Elsevier Inc</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>20141001</creationdate><title>Effect of dams’ parity and age on daughters’ milk yield in Norwegian Red cows</title><author>Storli, K.S. ; Heringstad, B. ; Salte, R.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c413t-4ef9ebc805ba0c3da8521f619fe74e27893674ae73c691b335fa3a93954718963</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Age Factors</topic><topic>Animals</topic><topic>Cattle - physiology</topic><topic>dam age</topic><topic>dam parity</topic><topic>Female</topic><topic>heifer</topic><topic>Lactation - physiology</topic><topic>Linear Models</topic><topic>Milk - secretion</topic><topic>milk yield</topic><topic>Parity</topic><topic>Pregnancy</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Storli, K.S.</creatorcontrib><creatorcontrib>Heringstad, B.</creatorcontrib><creatorcontrib>Salte, R.</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Journal of dairy science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Storli, K.S.</au><au>Heringstad, B.</au><au>Salte, R.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of dams’ parity and age on daughters’ milk yield in Norwegian Red cows</atitle><jtitle>Journal of dairy science</jtitle><addtitle>J Dairy Sci</addtitle><date>2014-10-01</date><risdate>2014</risdate><volume>97</volume><issue>10</issue><spage>6242</spage><epage>6249</epage><pages>6242-6249</pages><issn>0022-0302</issn><eissn>1525-3198</eissn><abstract>The effect of age and parity of dams on their daughters’ milk yield is not well known. Lactation data from 276,000 cows were extracted from the Norwegian Dairy Herd Recording System and analyzed using a linear animal model to estimate effects of parity and age within parity of dam. The 305-d milk yield of daughters decreased as parity of dam increased. Daughters of first-parity dams produced 149kg more milk than did daughters of seventh-parity dams. We also observed an effect of age of dam within parity on 305-d milk yield of daughters in first lactation. Dams that were young at first calving gave birth to daughters with a higher milk yield compared with older dams within the same parity. The effect of age within parity of dam was highest for second-parity dams. 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| language | eng |
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| source | MEDLINE; Elsevier ScienceDirect Journals; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals |
| subjects | Age Factors Animals Cattle - physiology dam age dam parity Female heifer Lactation - physiology Linear Models Milk - secretion milk yield Parity Pregnancy |
| title | Effect of dams’ parity and age on daughters’ milk yield in Norwegian Red cows |
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