Changes in Milk Protein Fraction as Affected by Subclinical Mastitis
From cows that had both healthy quarters and quarters with subclinical mastitis [somatic cell count (SCC) 84,000 vs. 293,000/ml in bucket milk], foremilk, bucket milk, and stripping and residual milks were collected. Young milk was obtained 1.5h later following a repeated oxytocin injection. Compare...
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| Veröffentlicht in: | Journal of dairy science 1999-11, Vol.82 (11), p.2402-2411 |
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| creator | Urech, E Puhan, Z Schallibaum, M |
| description | From cows that had both healthy quarters and quarters with subclinical mastitis [somatic cell count (SCC) 84,000 vs. 293,000/ml in bucket milk], foremilk, bucket milk, and stripping and residual milks were collected. Young milk was obtained 1.5h later following a repeated oxytocin injection. Compared with milk from healthy quarters, milk from quarters with subclinical mastitis showed elevated SCC, plasminogen, and protein and had increased activity of n-Acetyl-β-D-glucosaminidase (NAGase) and plasmin, as well as elevated portions of whey proteins and γ-casein in the total protein. The SCC and the other mentioned parameters were also higher in the foremilk and the stripping and residual milks compared with bucket milk, independent of the udder health status; however, decreased values were found for total protein. Young milk showed an increase of SCC and n-Acetyl-β-D-glucosaminidase activity compared with bucket milk. Because of lower levels of total plasmin and γ-casein, we concluded that this young milk was newly synthesized milk containing some casein degradation products and that proteolysis of casein continued in the udder until the next milking. The n-Acetyl-β-D-glucosaminidase activity was shown to be a better indicator for subclinical mastitis and correlated better with protein degradation than did SCC. |
| doi_str_mv | 10.3168/jds.S0022-0302(99)75491-3 |
| format | Article |
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Young milk was obtained 1.5h later following a repeated oxytocin injection. Compared with milk from healthy quarters, milk from quarters with subclinical mastitis showed elevated SCC, plasminogen, and protein and had increased activity of n-Acetyl-β-D-glucosaminidase (NAGase) and plasmin, as well as elevated portions of whey proteins and γ-casein in the total protein. The SCC and the other mentioned parameters were also higher in the foremilk and the stripping and residual milks compared with bucket milk, independent of the udder health status; however, decreased values were found for total protein. Young milk showed an increase of SCC and n-Acetyl-β-D-glucosaminidase activity compared with bucket milk. Because of lower levels of total plasmin and γ-casein, we concluded that this young milk was newly synthesized milk containing some casein degradation products and that proteolysis of casein continued in the udder until the next milking. The n-Acetyl-β-D-glucosaminidase activity was shown to be a better indicator for subclinical mastitis and correlated better with protein degradation than did SCC.</description><identifier>ISSN: 0022-0302</identifier><identifier>EISSN: 1525-3198</identifier><identifier>DOI: 10.3168/jds.S0022-0302(99)75491-3</identifier><identifier>PMID: 10575607</identifier><identifier>CODEN: JDSCAE</identifier><language>eng</language><publisher>Savoy, IL: Elsevier Inc</publisher><subject>Acetylglucosaminidase - metabolism ; Animal bacterial diseases ; Animals ; asymptomatic infections ; Bacterial diseases ; beta-N-acetylhexosaminidase ; Biological and medical sciences ; bovine mastitis ; bucket milk ; casein degradation ; Caseins - metabolism ; Cattle ; Cell Count ; dairy cows ; Female ; Fibrinolysin - metabolism ; Food industries ; foremilk ; Fundamental and applied biological sciences. Psychology ; Infectious diseases ; lactose ; Mastitis, Bovine - metabolism ; Medical sciences ; Milk - cytology ; Milk and cheese industries. Ice creams ; milk composition ; milk fractions ; milk protein percentage ; milk proteins ; Milk Proteins - metabolism ; milk yield ; milking frequency ; O-glycoside hydrolases ; oxytocin ; plasmin ; plasminogen ; Plasminogen - metabolism ; protein ; proteolysis ; residual milk ; somatic cell count ; strippings ; subclinical mastitis ; udder quarters ; Whey Proteins ; young milk</subject><ispartof>Journal of dairy science, 1999-11, Vol.82 (11), p.2402-2411</ispartof><rights>1999 American Dairy Science Association</rights><rights>2000 INIST-CNRS</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c537t-538eb2bc1fbd988b5d7e9ff44799cf2da1a85593894e023e37b237be9590b7e43</citedby><cites>FETCH-LOGICAL-c537t-538eb2bc1fbd988b5d7e9ff44799cf2da1a85593894e023e37b237be9590b7e43</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(99)75491-3$$EHTML$$P50$$Gelsevier$$Hfree_for_read</linktohtml><link.rule.ids>314,780,784,3550,27869,27924,27925,45995</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=1241235$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/10575607$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Urech, E</creatorcontrib><creatorcontrib>Puhan, Z</creatorcontrib><creatorcontrib>Schallibaum, M</creatorcontrib><title>Changes in Milk Protein Fraction as Affected by Subclinical Mastitis</title><title>Journal of dairy science</title><addtitle>J Dairy Sci</addtitle><description>From cows that had both healthy quarters and quarters with subclinical mastitis [somatic cell count (SCC) 84,000 vs. 293,000/ml in bucket milk], foremilk, bucket milk, and stripping and residual milks were collected. Young milk was obtained 1.5h later following a repeated oxytocin injection. Compared with milk from healthy quarters, milk from quarters with subclinical mastitis showed elevated SCC, plasminogen, and protein and had increased activity of n-Acetyl-β-D-glucosaminidase (NAGase) and plasmin, as well as elevated portions of whey proteins and γ-casein in the total protein. The SCC and the other mentioned parameters were also higher in the foremilk and the stripping and residual milks compared with bucket milk, independent of the udder health status; however, decreased values were found for total protein. Young milk showed an increase of SCC and n-Acetyl-β-D-glucosaminidase activity compared with bucket milk. Because of lower levels of total plasmin and γ-casein, we concluded that this young milk was newly synthesized milk containing some casein degradation products and that proteolysis of casein continued in the udder until the next milking. The n-Acetyl-β-D-glucosaminidase activity was shown to be a better indicator for subclinical mastitis and correlated better with protein degradation than did SCC.</description><subject>Acetylglucosaminidase - metabolism</subject><subject>Animal bacterial diseases</subject><subject>Animals</subject><subject>asymptomatic infections</subject><subject>Bacterial diseases</subject><subject>beta-N-acetylhexosaminidase</subject><subject>Biological and medical sciences</subject><subject>bovine mastitis</subject><subject>bucket milk</subject><subject>casein degradation</subject><subject>Caseins - metabolism</subject><subject>Cattle</subject><subject>Cell Count</subject><subject>dairy cows</subject><subject>Female</subject><subject>Fibrinolysin - metabolism</subject><subject>Food industries</subject><subject>foremilk</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Infectious diseases</subject><subject>lactose</subject><subject>Mastitis, Bovine - metabolism</subject><subject>Medical sciences</subject><subject>Milk - cytology</subject><subject>Milk and cheese industries. Ice creams</subject><subject>milk composition</subject><subject>milk fractions</subject><subject>milk protein percentage</subject><subject>milk proteins</subject><subject>Milk Proteins - metabolism</subject><subject>milk yield</subject><subject>milking frequency</subject><subject>O-glycoside hydrolases</subject><subject>oxytocin</subject><subject>plasmin</subject><subject>plasminogen</subject><subject>Plasminogen - metabolism</subject><subject>protein</subject><subject>proteolysis</subject><subject>residual milk</subject><subject>somatic cell count</subject><subject>strippings</subject><subject>subclinical mastitis</subject><subject>udder quarters</subject><subject>Whey Proteins</subject><subject>young milk</subject><issn>0022-0302</issn><issn>1525-3198</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1999</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>K30</sourceid><recordid>eNqNkV1v0zAUhi0EYqXwFyAINOAiw5-xfTl1X0ibQCq7thznuHVJk81OmPbvcZsKEFdcWNaRnvOe48cIvSX4hJFKfd406WSJMaUlZph-1PqTFFyTkj1BMyKoKBnR6ima_UaO0IuUNrkkFIvn6IhgIUWF5QydLda2W0EqQlfchPZH8S32A-TiIlo3hL4rbCpOvQc3QFPUj8VyrF0buuBsW9zYNIQhpJfombdtgleHe45uL86_L67K66-XXxan16UTTA6lYApqWjvi60YrVYtGgvaec6m187SxxCohNFOaA6YMmKxpPqCFxrUEzuboeMq9i_39CGkw25ActK3toB-TqTTDjPMqg-_-ATf9GLu8myFKSqxlxUSm9ES52KcUwZu7GLY2PhqCzU60yaLNXrTZWTRam71ow3Lv68OEsd5C81fnZDYD7w-ATdmVj7ZzIf3hKCd0v8OHCVuH1fohRDBpa9s2p5LddEUNIYbyrGOO3kykt72xq5jDbpcUk7yYFhWrSCYWEwH5D34GiCa5AJ2DJue6wTR9-I-X_QLG-rF2</recordid><startdate>19991101</startdate><enddate>19991101</enddate><creator>Urech, E</creator><creator>Puhan, Z</creator><creator>Schallibaum, M</creator><general>Elsevier Inc</general><general>Am Dairy Sci Assoc</general><general>American Dairy Science Association</general><scope>6I.</scope><scope>AAFTH</scope><scope>FBQ</scope><scope>IQODW</scope><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>7WH</scope><scope>K30</scope><scope>PAAUG</scope><scope>PAWHS</scope><scope>PAWZZ</scope><scope>PAXOH</scope><scope>PBHAV</scope><scope>PBQSW</scope><scope>PBYQZ</scope><scope>PCIWU</scope><scope>PCMID</scope><scope>PCZJX</scope><scope>PDGRG</scope><scope>PDWWI</scope><scope>PETMR</scope><scope>PFVGT</scope><scope>PGXDX</scope><scope>PIHIL</scope><scope>PISVA</scope><scope>PJCTQ</scope><scope>PJTMS</scope><scope>PLCHJ</scope><scope>PMHAD</scope><scope>PNQDJ</scope><scope>POUND</scope><scope>PPLAD</scope><scope>PQAPC</scope><scope>PQCAN</scope><scope>PQCMW</scope><scope>PQEME</scope><scope>PQHKH</scope><scope>PQMID</scope><scope>PQNCT</scope><scope>PQNET</scope><scope>PQSCT</scope><scope>PQSET</scope><scope>PSVJG</scope><scope>PVMQY</scope><scope>PZGFC</scope><scope>7X8</scope></search><sort><creationdate>19991101</creationdate><title>Changes in Milk Protein Fraction as Affected by Subclinical Mastitis</title><author>Urech, E ; Puhan, Z ; Schallibaum, M</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c537t-538eb2bc1fbd988b5d7e9ff44799cf2da1a85593894e023e37b237be9590b7e43</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1999</creationdate><topic>Acetylglucosaminidase - metabolism</topic><topic>Animal bacterial diseases</topic><topic>Animals</topic><topic>asymptomatic infections</topic><topic>Bacterial diseases</topic><topic>beta-N-acetylhexosaminidase</topic><topic>Biological and medical sciences</topic><topic>bovine mastitis</topic><topic>bucket milk</topic><topic>casein degradation</topic><topic>Caseins - metabolism</topic><topic>Cattle</topic><topic>Cell Count</topic><topic>dairy cows</topic><topic>Female</topic><topic>Fibrinolysin - metabolism</topic><topic>Food industries</topic><topic>foremilk</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Infectious diseases</topic><topic>lactose</topic><topic>Mastitis, Bovine - metabolism</topic><topic>Medical sciences</topic><topic>Milk - cytology</topic><topic>Milk and cheese industries. Ice creams</topic><topic>milk composition</topic><topic>milk fractions</topic><topic>milk protein percentage</topic><topic>milk proteins</topic><topic>Milk Proteins - metabolism</topic><topic>milk yield</topic><topic>milking frequency</topic><topic>O-glycoside hydrolases</topic><topic>oxytocin</topic><topic>plasmin</topic><topic>plasminogen</topic><topic>Plasminogen - metabolism</topic><topic>protein</topic><topic>proteolysis</topic><topic>residual milk</topic><topic>somatic cell count</topic><topic>strippings</topic><topic>subclinical mastitis</topic><topic>udder quarters</topic><topic>Whey Proteins</topic><topic>young milk</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Urech, E</creatorcontrib><creatorcontrib>Puhan, Z</creatorcontrib><creatorcontrib>Schallibaum, M</creatorcontrib><collection>ScienceDirect Open Access Titles</collection><collection>Elsevier:ScienceDirect:Open Access</collection><collection>AGRIS</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>Periodicals Index Online Segment 50</collection><collection>Periodicals Index Online</collection><collection>Primary Sources Access—Foundation Edition (Plan E) - 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Young milk was obtained 1.5h later following a repeated oxytocin injection. Compared with milk from healthy quarters, milk from quarters with subclinical mastitis showed elevated SCC, plasminogen, and protein and had increased activity of n-Acetyl-β-D-glucosaminidase (NAGase) and plasmin, as well as elevated portions of whey proteins and γ-casein in the total protein. The SCC and the other mentioned parameters were also higher in the foremilk and the stripping and residual milks compared with bucket milk, independent of the udder health status; however, decreased values were found for total protein. Young milk showed an increase of SCC and n-Acetyl-β-D-glucosaminidase activity compared with bucket milk. Because of lower levels of total plasmin and γ-casein, we concluded that this young milk was newly synthesized milk containing some casein degradation products and that proteolysis of casein continued in the udder until the next milking. The n-Acetyl-β-D-glucosaminidase activity was shown to be a better indicator for subclinical mastitis and correlated better with protein degradation than did SCC.</abstract><cop>Savoy, IL</cop><pub>Elsevier Inc</pub><pmid>10575607</pmid><doi>10.3168/jds.S0022-0302(99)75491-3</doi><tpages>10</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | Journal of dairy science, 1999-11, Vol.82 (11), p.2402-2411 |
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| source | MEDLINE; Elsevier ScienceDirect Journals Complete; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; Periodicals Index Online |
| subjects | Acetylglucosaminidase - metabolism Animal bacterial diseases Animals asymptomatic infections Bacterial diseases beta-N-acetylhexosaminidase Biological and medical sciences bovine mastitis bucket milk casein degradation Caseins - metabolism Cattle Cell Count dairy cows Female Fibrinolysin - metabolism Food industries foremilk Fundamental and applied biological sciences. Psychology Infectious diseases lactose Mastitis, Bovine - metabolism Medical sciences Milk - cytology Milk and cheese industries. Ice creams milk composition milk fractions milk protein percentage milk proteins Milk Proteins - metabolism milk yield milking frequency O-glycoside hydrolases oxytocin plasmin plasminogen Plasminogen - metabolism protein proteolysis residual milk somatic cell count strippings subclinical mastitis udder quarters Whey Proteins young milk |
| title | Changes in Milk Protein Fraction as Affected by Subclinical Mastitis |
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