A comparison between bulk tank milk samples and individual milk samples from dairy herds in Uruguay
Uruguay is situated between Argentina and Brazil in eastern South America and is the main exporting country of milk and milk products in the region. Thus, the dairy industry is of great economic importance to Uruguay. Mastitis is an inflammatory reaction of the mammary gland, which has significant h...
| Autor principal: | |
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| Formato: | L3 |
| Lenguaje: | Inglés sueco |
| Publicado: |
SLU/Dept. of Microbiology
2004
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| Materias: |
| _version_ | 1855571821205651456 |
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| author | Axelsson, Anneli |
| author_browse | Axelsson, Anneli |
| author_facet | Axelsson, Anneli |
| author_sort | Axelsson, Anneli |
| collection | Epsilon Archive for Student Projects |
| description | Uruguay is situated between Argentina and Brazil in eastern South America and is the main exporting country of milk and milk products in the region. Thus, the dairy industry is of great economic importance to Uruguay. Mastitis is an inflammatory reaction of the mammary gland, which has significant health and economic implications. It is the major health problem among dairy cows in Uruguay. Sub-clinical mastitis is a condition in which there is no detectable inflammatory change in the udder and no observable abnormalities in the milk. However, it reduces milk production and adversely affects milk quality. It has been shown that sub-clinical mastitis is responsible for 70% of the losses in milk production in Uruguay.
The aim of this study was to compare results obtained from bulk tank milk (BTM) analysis and individual samples taken from each udder-quarter in the herd, to evaluate whether BTM can be a useful tool in mastitis control.
Seven farms in the Paysandú area were selected. On each farm, samples were collected from each quarter and analysed; partly for somatic cell count (SCC) by the California mastitis test (CMT), and partly for bacteriological analysis. Samples were also taken from the tank on five consecutive days and analysed partly for SCC by the Fossomatic method, and partly for bacteriological analysis. Considered bacteria were common mastitides such as Stafylococci, Streptococci and Coliformes.
The mean value for the total number of bacteria in the bulk tank was 24,227 cfu/ml. The bacteria isolated from the individual cows were not always seen in the tank, and the bacteria found in the tank were not always found in the quarters. The conclusion is therefore that BTM should only be used as a complement to individual sampling. |
| format | L3 |
| id | RepoSLU11172 |
| institution | Swedish University of Agricultural Sciences |
| language | Inglés swe |
| publishDate | 2004 |
| publishDateSort | 2004 |
| publisher | SLU/Dept. of Microbiology |
| publisherStr | SLU/Dept. of Microbiology |
| record_format | eprints |
| spelling | RepoSLU111722017-09-26T10:37:40Z A comparison between bulk tank milk samples and individual milk samples from dairy herds in Uruguay En jämförelse mellan tankmjölksprover och individuella mjölkprover från gårdar i Uruguay Axelsson, Anneli mastitis sub-clinical mastitis bulk tank milk Uruguay Uruguay is situated between Argentina and Brazil in eastern South America and is the main exporting country of milk and milk products in the region. Thus, the dairy industry is of great economic importance to Uruguay. Mastitis is an inflammatory reaction of the mammary gland, which has significant health and economic implications. It is the major health problem among dairy cows in Uruguay. Sub-clinical mastitis is a condition in which there is no detectable inflammatory change in the udder and no observable abnormalities in the milk. However, it reduces milk production and adversely affects milk quality. It has been shown that sub-clinical mastitis is responsible for 70% of the losses in milk production in Uruguay. The aim of this study was to compare results obtained from bulk tank milk (BTM) analysis and individual samples taken from each udder-quarter in the herd, to evaluate whether BTM can be a useful tool in mastitis control. Seven farms in the Paysandú area were selected. On each farm, samples were collected from each quarter and analysed; partly for somatic cell count (SCC) by the California mastitis test (CMT), and partly for bacteriological analysis. Samples were also taken from the tank on five consecutive days and analysed partly for SCC by the Fossomatic method, and partly for bacteriological analysis. Considered bacteria were common mastitides such as Stafylococci, Streptococci and Coliformes. The mean value for the total number of bacteria in the bulk tank was 24,227 cfu/ml. The bacteria isolated from the individual cows were not always seen in the tank, and the bacteria found in the tank were not always found in the quarters. The conclusion is therefore that BTM should only be used as a complement to individual sampling. Uruguay ligger mellan Argentina och Brasilien i östra Sydamerika och är det främsta exportlandet av mjölk och mjölkprodukter i regionen. Därför är mjölkproduktionen av stor ekonomisk betydelse i Uruguay. Mastit är en inflammatorisk reaktion i juvret och har betydande effekter på hälsa och ekonomi. Det är det främsta hälsoproblemet hos mjölkkor i Uruguay. Subklinisk mastit är ett tillstånd där det inte finns några synliga inflammatoriska förändringar i juvret och heller inga makroskopiska förändringar i mjölken. Dock kan vid detta tillstånd mjölkproduktionen reduceras och kvaliteten på mjölken försämras. Studier har visat att subklinisk mastit är orsaken till 70% av förlusterna inom mjölkproduktion i Uruguay. Målet med denna studie var att jämföra resultat från mjölkprover tagna ur mjölktanken, och individuella mjölkprover tagna från varje juverfjärdedel i besättningen. Detta för att utröna om tankmjölksprover kan vara ett användbart redskap för mastitkontroll. Sju gårdar i området kring Paysandú valdes ut. På varje gård samlades prover in från varje juverfjärdedel och analyserades, dels analyserades cellhalten med hjälp av California Mastitis Test (CMT) och dels odlades proverna för bakteriologisk analys. Prover togs också från tanken i fem på varandra följande dagar och analyserades dels med avseende på cellhalt genom Fossomatic cell count, och dels för bakteriologisk analys. De bakterier som analyserades är vanliga mastitorsakande bakterier: Stafylokocker, Streptokocker och Koliformer. Medelvärdet för det totala antalet bakterier i tanken var 24,227 cfu/ml. De bakterier som isolerades från de individuella proverna kunde inte alltid isoleras från proverna tagna från tanken, och de bakterier som isolerades från tankmjölksproverna återfanns inte alltid i fjärdedelsproverna. Slutsatsen blir därför att mjölkprover från tankmjölk endast ska användas som ett komplement till individuell provtagning. SLU/Dept. of Microbiology 2004 L3 eng swe https://stud.epsilon.slu.se/11172/ |
| spellingShingle | mastitis sub-clinical mastitis bulk tank milk Uruguay Axelsson, Anneli A comparison between bulk tank milk samples and individual milk samples from dairy herds in Uruguay |
| title | A comparison between bulk tank milk samples and individual milk samples from dairy herds in Uruguay |
| title_full | A comparison between bulk tank milk samples and individual milk samples from dairy herds in Uruguay |
| title_fullStr | A comparison between bulk tank milk samples and individual milk samples from dairy herds in Uruguay |
| title_full_unstemmed | A comparison between bulk tank milk samples and individual milk samples from dairy herds in Uruguay |
| title_short | A comparison between bulk tank milk samples and individual milk samples from dairy herds in Uruguay |
| title_sort | comparison between bulk tank milk samples and individual milk samples from dairy herds in uruguay |
| topic | mastitis sub-clinical mastitis bulk tank milk Uruguay |