Effect of Milking Frequency on DHI Performance Measures
Increasing production by increasing milking frequency (MF) is a management option available to dairy producers. This study examined effects of MF and interactions with region and herd size on measures of herd performance. Dairy Herd Improvement (DHI) Holstein herd summary records (n = 10,754, 10,550...
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| Veröffentlicht in: | Journal of dairy science 2002-12, Vol.85 (12), p.3526-3533 |
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| creator | Smith, J.W. Ely, L.O. Graves, W.M. Gilson, W.D. |
| description | Increasing production by increasing milking frequency (MF) is a management option available to dairy producers. This study examined effects of MF and interactions with region and herd size on measures of herd performance. Dairy Herd Improvement (DHI) Holstein herd summary records (n = 10,754, 10,550, and 10,438) for the years 1998, 1999, and 2000 were classified by MF: two times a day (2X) milking vs three times a day (3X); herd size: small (< 250 cows) and large (≥ 250 cows); and region: North and South. Percentage of herds milking 3X by year were 7.0, 6.7, and 7.1. Rolling herd average milk production was 16, 16, and 15% higher for herds milking 3X than herds milking 2X for the respective years. Herds milking 3X in the North region outproduced herds milking 3X in the South region. Milk fat and protein percentages were lower for herds milking 3X during all 3 yr. Differences in energy-corrected milk production between herds milking 3X and herds milking 2X were 14.5, 13.4, and 13.4% during the respective 3 yr as a result of lower component percentages for herds milking 3X. Herds milking 3X had more days open and higher actual calving intervals than herds milking 2X. Services per pregnancy for herds breeding primarily by artificial insemination were higher for herds milking 3X than for herds milking 2X. Somatic cell scores and weighted somatic cell counts were lower for herds milking 3X than herds milking 2X. Herds milking 3X had a higher percentage of somatic cell scores in the low range (0 to 3) and a lower percentage in the high range (7 to 9). Mean percentages of cows entering and leaving the herd were higher for herds milking 3X during all 3 yr. |
| doi_str_mv | 10.3168/jds.S0022-0302(02)74442-1 |
| format | Article |
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This study examined effects of MF and interactions with region and herd size on measures of herd performance. Dairy Herd Improvement (DHI) Holstein herd summary records (n = 10,754, 10,550, and 10,438) for the years 1998, 1999, and 2000 were classified by MF: two times a day (2X) milking vs three times a day (3X); herd size: small (< 250 cows) and large (≥ 250 cows); and region: North and South. Percentage of herds milking 3X by year were 7.0, 6.7, and 7.1. Rolling herd average milk production was 16, 16, and 15% higher for herds milking 3X than herds milking 2X for the respective years. Herds milking 3X in the North region outproduced herds milking 3X in the South region. Milk fat and protein percentages were lower for herds milking 3X during all 3 yr. Differences in energy-corrected milk production between herds milking 3X and herds milking 2X were 14.5, 13.4, and 13.4% during the respective 3 yr as a result of lower component percentages for herds milking 3X. Herds milking 3X had more days open and higher actual calving intervals than herds milking 2X. Services per pregnancy for herds breeding primarily by artificial insemination were higher for herds milking 3X than for herds milking 2X. Somatic cell scores and weighted somatic cell counts were lower for herds milking 3X than herds milking 2X. Herds milking 3X had a higher percentage of somatic cell scores in the low range (0 to 3) and a lower percentage in the high range (7 to 9). Mean percentages of cows entering and leaving the herd were higher for herds milking 3X during all 3 yr.</description><identifier>ISSN: 0022-0302</identifier><identifier>EISSN: 1525-3198</identifier><identifier>DOI: 10.3168/jds.S0022-0302(02)74442-1</identifier><identifier>PMID: 12512627</identifier><identifier>CODEN: JDSCAE</identifier><language>eng</language><publisher>Savoy, IL: Elsevier Inc</publisher><subject>Animal productions ; Animals ; Biological and medical sciences ; Breeding ; Cattle - physiology ; Cell Count ; Dairy Herd Improvement ; Dairying - methods ; Female ; frequency ; Fundamental and applied biological sciences. Psychology ; Health Status ; Insemination, Artificial - veterinary ; Lactation ; Lipids - analysis ; Male ; Mammary Glands, Animal ; management ; Mastitis, Bovine - epidemiology ; Milk - chemistry ; Milk - cytology ; Milk Proteins - analysis ; milking ; Pregnancy ; Reproduction ; Terrestrial animal productions ; Time Factors ; Vertebrates</subject><ispartof>Journal of dairy science, 2002-12, Vol.85 (12), p.3526-3533</ispartof><rights>2002 American Dairy Science Association</rights><rights>2003 INIST-CNRS</rights><rights>Copyright American Dairy Science Association Dec 2002</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c513t-201ce4502c4fa49409f0fb559aa997654f3f569ecc76ed63d24ac1e3b76645f33</citedby><cites>FETCH-LOGICAL-c513t-201ce4502c4fa49409f0fb559aa997654f3f569ecc76ed63d24ac1e3b76645f33</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.3168/jds.S0022-0302(02)74442-1$$EHTML$$P50$$Gelsevier$$Hfree_for_read</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=14429899$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/12512627$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Smith, J.W.</creatorcontrib><creatorcontrib>Ely, L.O.</creatorcontrib><creatorcontrib>Graves, W.M.</creatorcontrib><creatorcontrib>Gilson, W.D.</creatorcontrib><title>Effect of Milking Frequency on DHI Performance Measures</title><title>Journal of dairy science</title><addtitle>J Dairy Sci</addtitle><description>Increasing production by increasing milking frequency (MF) is a management option available to dairy producers. This study examined effects of MF and interactions with region and herd size on measures of herd performance. Dairy Herd Improvement (DHI) Holstein herd summary records (n = 10,754, 10,550, and 10,438) for the years 1998, 1999, and 2000 were classified by MF: two times a day (2X) milking vs three times a day (3X); herd size: small (< 250 cows) and large (≥ 250 cows); and region: North and South. Percentage of herds milking 3X by year were 7.0, 6.7, and 7.1. Rolling herd average milk production was 16, 16, and 15% higher for herds milking 3X than herds milking 2X for the respective years. Herds milking 3X in the North region outproduced herds milking 3X in the South region. Milk fat and protein percentages were lower for herds milking 3X during all 3 yr. Differences in energy-corrected milk production between herds milking 3X and herds milking 2X were 14.5, 13.4, and 13.4% during the respective 3 yr as a result of lower component percentages for herds milking 3X. 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Psychology</topic><topic>Health Status</topic><topic>Insemination, Artificial - veterinary</topic><topic>Lactation</topic><topic>Lipids - analysis</topic><topic>Male</topic><topic>Mammary Glands, Animal</topic><topic>management</topic><topic>Mastitis, Bovine - epidemiology</topic><topic>Milk - chemistry</topic><topic>Milk - cytology</topic><topic>Milk Proteins - analysis</topic><topic>milking</topic><topic>Pregnancy</topic><topic>Reproduction</topic><topic>Terrestrial animal productions</topic><topic>Time Factors</topic><topic>Vertebrates</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Smith, J.W.</creatorcontrib><creatorcontrib>Ely, L.O.</creatorcontrib><creatorcontrib>Graves, W.M.</creatorcontrib><creatorcontrib>Gilson, W.D.</creatorcontrib><collection>ScienceDirect Open Access Titles</collection><collection>Elsevier:ScienceDirect:Open Access</collection><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Agricultural Science Collection</collection><collection>Health & Medical Collection</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Medical Database (Alumni Edition)</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>ProQuest Natural Science Collection</collection><collection>Hospital Premium Collection</collection><collection>Hospital Premium Collection (Alumni Edition)</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>Agricultural & Environmental Science Collection</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>Natural Science Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>Health Research Premium Collection</collection><collection>Health Research Premium Collection (Alumni)</collection><collection>ProQuest Central Student</collection><collection>SciTech Premium Collection</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>ProQuest Engineering Collection</collection><collection>Agricultural Science Database</collection><collection>Health & Medical Collection (Alumni Edition)</collection><collection>Medical Database</collection><collection>Engineering Database</collection><collection>Environmental Science Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>Engineering Collection</collection><collection>Environmental Science Collection</collection><collection>SIRS Editorial</collection><collection>MEDLINE - Academic</collection><jtitle>Journal of dairy science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Smith, J.W.</au><au>Ely, L.O.</au><au>Graves, W.M.</au><au>Gilson, W.D.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of Milking Frequency on DHI Performance Measures</atitle><jtitle>Journal of dairy science</jtitle><addtitle>J Dairy Sci</addtitle><date>2002-12-01</date><risdate>2002</risdate><volume>85</volume><issue>12</issue><spage>3526</spage><epage>3533</epage><pages>3526-3533</pages><issn>0022-0302</issn><eissn>1525-3198</eissn><coden>JDSCAE</coden><abstract>Increasing production by increasing milking frequency (MF) is a management option available to dairy producers. 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Herds milking 3X had more days open and higher actual calving intervals than herds milking 2X. Services per pregnancy for herds breeding primarily by artificial insemination were higher for herds milking 3X than for herds milking 2X. Somatic cell scores and weighted somatic cell counts were lower for herds milking 3X than herds milking 2X. Herds milking 3X had a higher percentage of somatic cell scores in the low range (0 to 3) and a lower percentage in the high range (7 to 9). Mean percentages of cows entering and leaving the herd were higher for herds milking 3X during all 3 yr.</abstract><cop>Savoy, IL</cop><pub>Elsevier Inc</pub><pmid>12512627</pmid><doi>10.3168/jds.S0022-0302(02)74442-1</doi><tpages>8</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Animal productions Animals Biological and medical sciences Breeding Cattle - physiology Cell Count Dairy Herd Improvement Dairying - methods Female frequency Fundamental and applied biological sciences. Psychology Health Status Insemination, Artificial - veterinary Lactation Lipids - analysis Male Mammary Glands, Animal management Mastitis, Bovine - epidemiology Milk - chemistry Milk - cytology Milk Proteins - analysis milking Pregnancy Reproduction Terrestrial animal productions Time Factors Vertebrates |
| title | Effect of Milking Frequency on DHI Performance Measures |
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