Influence of milking three times a day on milk quality
Lactations were divided into three periods: early (1 to 99 d), mid (100 to 199 d), and late (200 to 299 d). One hundred Holsteins were randomly split into four groups that were balanced for parity. Groups 222 and 333 were milked twice and three times a day, respectively, throughout lactation. Group...
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| Veröffentlicht in: | Journal of dairy science 1997-03, Vol.80 (3), p.427-436 |
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| creator | Klei, L.R. (Northeast Dairy Foods Research Center,) Lynch, J.M Barbano, D.M Oltenacu, P.A Lednor, A.J Bandler, D.K |
| description | Lactations were divided into three periods: early (1 to 99 d), mid (100 to 199 d), and late (200 to 299 d). One hundred Holsteins were randomly split into four groups that were balanced for parity. Groups 222 and 333 were milked twice and three times a day, respectively, throughout lactation. Group 233 was switched from twice to three times daily milking at 100 d, and group 223 was switched at 200 d. Compared with group 222, milk yield for group 333 increased by 10.4%, and fat and protein yields increased by 4.7 and 7.3%, respectively. Mean milk SCC for all groups was 175,000 cells/ml within each lactation period. The percentage of CP was lower for cows milked three times a day than for cows milked twice a day during each stage of lactation (early, 2.78 and 2.91; mid, 3.08 and 3.19; and late, 3.16 and 3.28, respectively). Casein as a percentage of CP was significantly higher for cows milked three times a day during midlactation. The acid degree values (milliequivalents of FFA/100 g of fat) were significantly higher for milk from cows milked three times a day than for cows milked twice a day during early and midlactation, (early, 0.75 and 0.55; mid, 0.82 and 0.61; and late, 0.88 and 0.75, respectively). No differences were detected in milk flavor or plasmin activity because of milking frequency. Casein as a percentage of CP decreased, and plasmin activity increased, as parity and stage of lactation increased |
| doi_str_mv | 10.3168/jds.S0022-0302(97)75954-X |
| format | Article |
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(Northeast Dairy Foods Research Center,) ; Lynch, J.M ; Barbano, D.M ; Oltenacu, P.A ; Lednor, A.J ; Bandler, D.K</creator><creatorcontrib>Klei, L.R. (Northeast Dairy Foods Research Center,) ; Lynch, J.M ; Barbano, D.M ; Oltenacu, P.A ; Lednor, A.J ; Bandler, D.K</creatorcontrib><description>Lactations were divided into three periods: early (1 to 99 d), mid (100 to 199 d), and late (200 to 299 d). One hundred Holsteins were randomly split into four groups that were balanced for parity. Groups 222 and 333 were milked twice and three times a day, respectively, throughout lactation. Group 233 was switched from twice to three times daily milking at 100 d, and group 223 was switched at 200 d. Compared with group 222, milk yield for group 333 increased by 10.4%, and fat and protein yields increased by 4.7 and 7.3%, respectively. Mean milk SCC for all groups was 175,000 cells/ml within each lactation period. The percentage of CP was lower for cows milked three times a day than for cows milked twice a day during each stage of lactation (early, 2.78 and 2.91; mid, 3.08 and 3.19; and late, 3.16 and 3.28, respectively). Casein as a percentage of CP was significantly higher for cows milked three times a day during midlactation. The acid degree values (milliequivalents of FFA/100 g of fat) were significantly higher for milk from cows milked three times a day than for cows milked twice a day during early and midlactation, (early, 0.75 and 0.55; mid, 0.82 and 0.61; and late, 0.88 and 0.75, respectively). No differences were detected in milk flavor or plasmin activity because of milking frequency. Casein as a percentage of CP decreased, and plasmin activity increased, as parity and stage of lactation increased</description><identifier>ISSN: 0022-0302</identifier><identifier>EISSN: 1525-3198</identifier><identifier>DOI: 10.3168/jds.S0022-0302(97)75954-X</identifier><identifier>PMID: 9098793</identifier><identifier>CODEN: JDSCAE</identifier><language>eng</language><publisher>Savoy, IL: Am Dairy Sci Assoc</publisher><subject>ANALISIS ORGANOLEPTICO ; ANALYSE ORGANOLEPTIQUE ; Animal productions ; Animals ; Biological and medical sciences ; CASEINA ; CASEINE ; Caseins - analysis ; Cattle - physiology ; Cell Count ; CHOIX DE LA DATE ; CONTENIDO PROTEICO ; Dairying - methods ; ELECCION DE LA EPOCA ; Female ; Fibrinolysin - metabolism ; Fundamental and applied biological sciences. Psychology ; GRASA DE LA LECHE ; LACTACION ; LACTATION ; Lactation - physiology ; LAIT ; LECHE ; Lipids - analysis ; LIPOLISIS ; LIPOLYSE ; MATIERE GRASSE DU LAIT ; Milk - chemistry ; Milk - cytology ; Milk Proteins - analysis ; NUMERO DE LACTACION ; NUMERO DE LACTATION ; ORDENO ; Parity ; PLASMINA ; PLASMINE ; PROTEINA BRUTA ; PROTEINAS DE LA LECHE ; PROTEINE BRUTE ; PROTEINE DU LAIT ; Quality Control ; TENEUR EN PROTEINES ; Terrestrial animal productions ; Time Factors ; TRAITE ; VACAS LECHERAS ; VACHE LAITIERE ; Vertebrates</subject><ispartof>Journal of dairy science, 1997-03, Vol.80 (3), p.427-436</ispartof><rights>1997 INIST-CNRS</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c469t-2cb6a2cca589dbb8463e81b8a9fa842bf0ed106b304657c2a708d04887dbc7363</citedby><cites>FETCH-LOGICAL-c469t-2cb6a2cca589dbb8463e81b8a9fa842bf0ed106b304657c2a708d04887dbc7363</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27869,27924,27925</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=2609875$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/9098793$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Klei, L.R. (Northeast Dairy Foods Research Center,)</creatorcontrib><creatorcontrib>Lynch, J.M</creatorcontrib><creatorcontrib>Barbano, D.M</creatorcontrib><creatorcontrib>Oltenacu, P.A</creatorcontrib><creatorcontrib>Lednor, A.J</creatorcontrib><creatorcontrib>Bandler, D.K</creatorcontrib><title>Influence of milking three times a day on milk quality</title><title>Journal of dairy science</title><addtitle>J Dairy Sci</addtitle><description>Lactations were divided into three periods: early (1 to 99 d), mid (100 to 199 d), and late (200 to 299 d). One hundred Holsteins were randomly split into four groups that were balanced for parity. Groups 222 and 333 were milked twice and three times a day, respectively, throughout lactation. Group 233 was switched from twice to three times daily milking at 100 d, and group 223 was switched at 200 d. Compared with group 222, milk yield for group 333 increased by 10.4%, and fat and protein yields increased by 4.7 and 7.3%, respectively. Mean milk SCC for all groups was 175,000 cells/ml within each lactation period. The percentage of CP was lower for cows milked three times a day than for cows milked twice a day during each stage of lactation (early, 2.78 and 2.91; mid, 3.08 and 3.19; and late, 3.16 and 3.28, respectively). Casein as a percentage of CP was significantly higher for cows milked three times a day during midlactation. The acid degree values (milliequivalents of FFA/100 g of fat) were significantly higher for milk from cows milked three times a day than for cows milked twice a day during early and midlactation, (early, 0.75 and 0.55; mid, 0.82 and 0.61; and late, 0.88 and 0.75, respectively). No differences were detected in milk flavor or plasmin activity because of milking frequency. Casein as a percentage of CP decreased, and plasmin activity increased, as parity and stage of lactation increased</description><subject>ANALISIS ORGANOLEPTICO</subject><subject>ANALYSE ORGANOLEPTIQUE</subject><subject>Animal productions</subject><subject>Animals</subject><subject>Biological and medical sciences</subject><subject>CASEINA</subject><subject>CASEINE</subject><subject>Caseins - analysis</subject><subject>Cattle - physiology</subject><subject>Cell Count</subject><subject>CHOIX DE LA DATE</subject><subject>CONTENIDO PROTEICO</subject><subject>Dairying - methods</subject><subject>ELECCION DE LA EPOCA</subject><subject>Female</subject><subject>Fibrinolysin - metabolism</subject><subject>Fundamental and applied biological sciences. 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(Northeast Dairy Foods Research Center,)</au><au>Lynch, J.M</au><au>Barbano, D.M</au><au>Oltenacu, P.A</au><au>Lednor, A.J</au><au>Bandler, D.K</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Influence of milking three times a day on milk quality</atitle><jtitle>Journal of dairy science</jtitle><addtitle>J Dairy Sci</addtitle><date>1997-03-01</date><risdate>1997</risdate><volume>80</volume><issue>3</issue><spage>427</spage><epage>436</epage><pages>427-436</pages><issn>0022-0302</issn><eissn>1525-3198</eissn><coden>JDSCAE</coden><abstract>Lactations were divided into three periods: early (1 to 99 d), mid (100 to 199 d), and late (200 to 299 d). One hundred Holsteins were randomly split into four groups that were balanced for parity. Groups 222 and 333 were milked twice and three times a day, respectively, throughout lactation. Group 233 was switched from twice to three times daily milking at 100 d, and group 223 was switched at 200 d. Compared with group 222, milk yield for group 333 increased by 10.4%, and fat and protein yields increased by 4.7 and 7.3%, respectively. Mean milk SCC for all groups was 175,000 cells/ml within each lactation period. The percentage of CP was lower for cows milked three times a day than for cows milked twice a day during each stage of lactation (early, 2.78 and 2.91; mid, 3.08 and 3.19; and late, 3.16 and 3.28, respectively). Casein as a percentage of CP was significantly higher for cows milked three times a day during midlactation. The acid degree values (milliequivalents of FFA/100 g of fat) were significantly higher for milk from cows milked three times a day than for cows milked twice a day during early and midlactation, (early, 0.75 and 0.55; mid, 0.82 and 0.61; and late, 0.88 and 0.75, respectively). No differences were detected in milk flavor or plasmin activity because of milking frequency. Casein as a percentage of CP decreased, and plasmin activity increased, as parity and stage of lactation increased</abstract><cop>Savoy, IL</cop><pub>Am Dairy Sci Assoc</pub><pmid>9098793</pmid><doi>10.3168/jds.S0022-0302(97)75954-X</doi><tpages>10</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | Journal of dairy science, 1997-03, Vol.80 (3), p.427-436 |
| issn | 0022-0302 1525-3198 |
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| source | MEDLINE; Periodicals Index Online; Access via ScienceDirect (Elsevier); EZB-FREE-00999 freely available EZB journals |
| subjects | ANALISIS ORGANOLEPTICO ANALYSE ORGANOLEPTIQUE Animal productions Animals Biological and medical sciences CASEINA CASEINE Caseins - analysis Cattle - physiology Cell Count CHOIX DE LA DATE CONTENIDO PROTEICO Dairying - methods ELECCION DE LA EPOCA Female Fibrinolysin - metabolism Fundamental and applied biological sciences. Psychology GRASA DE LA LECHE LACTACION LACTATION Lactation - physiology LAIT LECHE Lipids - analysis LIPOLISIS LIPOLYSE MATIERE GRASSE DU LAIT Milk - chemistry Milk - cytology Milk Proteins - analysis NUMERO DE LACTACION NUMERO DE LACTATION ORDENO Parity PLASMINA PLASMINE PROTEINA BRUTA PROTEINAS DE LA LECHE PROTEINE BRUTE PROTEINE DU LAIT Quality Control TENEUR EN PROTEINES Terrestrial animal productions Time Factors TRAITE VACAS LECHERAS VACHE LAITIERE Vertebrates |
| title | Influence of milking three times a day on milk quality |
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