Production and management in automatic milking systems
Different cow traffic systems are used to guide the dairy cows to make them pass the milking unit in automatic milking systems (AMS). Several studies have compared milk production in different cow traffic systems but there were little evidence that one system has a higher production than another. It...
| Autor principal: | |
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| Formato: | H2 |
| Lenguaje: | Inglés sueco |
| Publicado: |
SLU/Dept. of Animal Nutrition and Management (until 231231)
2017
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| Materias: |
| _version_ | 1855572188888825856 |
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| author | Gustafsson, Linnea |
| author_browse | Gustafsson, Linnea |
| author_facet | Gustafsson, Linnea |
| author_sort | Gustafsson, Linnea |
| collection | Epsilon Archive for Student Projects |
| description | Different cow traffic systems are used to guide the dairy cows to make them pass the milking unit in automatic milking systems (AMS). Several studies have compared milk production in different cow traffic systems but there were little evidence that one system has a higher production than another. It is likely to believe that the farmers’ management, engagement and dedication have greater importance. Therefore, this study investigated which factors affect milk production in AMS. The study consisted of a literature study, a questionnaire sent out to Swedish dairy farmers with AMS, collection of key figures from the participating farmers’ management software and six interviews with selected dairy farmers who were successful in their production. Results from the questionnaire were compared to production variables from the management software. Milk production was defined as milk per milking unit and day (MPu) and milk per cow and day (MPc). It was found that traffic system had no impact on milk production and it was rather the farmers’ management that had importance. Farms feeding partly mixed ration (PMR) had greater MPu (113 kg higher, p<0.05) and a tendency for greater MPc (1.4 kg higher, p<0.1) and less time unoccupied in the milking unit (4.5 percentage points lower, p<0.05) compared to farms feeding only roughage in the feed bunk. Farms with high part of Jersey cows milked in AMS had lower MPc (0.08 kg lower per each extra percentage point of Jersey, p< 0.01) and a tendency for lower MPu (3 kg lower per each extra percentage point of Jersey, p<0.1). Farms with high bulk tank somatic cell count (SCC >250) had both lower MPu (227 kg lower, p<0.001) and MPc (3 kg lower, p<0.01) compared to farms with SCC ≤250. Number of cows fetched to the milking unit had no effect on MPu or MPc. However, it seems important to fetch selected cows that do not milk voluntary. Farms with slatted floors had lower MPu (127 kg lower, p<0.05), MPc (3 kg lower, p<0.05) and more time unoccupied in the milking unit (4.5 percentage points higher, p<0.05) compared to farms with solid floor. |
| format | H2 |
| id | RepoSLU13110 |
| institution | Swedish University of Agricultural Sciences |
| language | Inglés swe |
| publishDate | 2017 |
| publishDateSort | 2017 |
| publisher | SLU/Dept. of Animal Nutrition and Management (until 231231) |
| publisherStr | SLU/Dept. of Animal Nutrition and Management (until 231231) |
| record_format | eprints |
| spelling | RepoSLU131102019-02-25T13:41:54Z Production and management in automatic milking systems Produktion och skötsel i automatiska mjölkningssystem Gustafsson, Linnea cow traffic automatic milking systems dairy cows milk production cow herd management Different cow traffic systems are used to guide the dairy cows to make them pass the milking unit in automatic milking systems (AMS). Several studies have compared milk production in different cow traffic systems but there were little evidence that one system has a higher production than another. It is likely to believe that the farmers’ management, engagement and dedication have greater importance. Therefore, this study investigated which factors affect milk production in AMS. The study consisted of a literature study, a questionnaire sent out to Swedish dairy farmers with AMS, collection of key figures from the participating farmers’ management software and six interviews with selected dairy farmers who were successful in their production. Results from the questionnaire were compared to production variables from the management software. Milk production was defined as milk per milking unit and day (MPu) and milk per cow and day (MPc). It was found that traffic system had no impact on milk production and it was rather the farmers’ management that had importance. Farms feeding partly mixed ration (PMR) had greater MPu (113 kg higher, p<0.05) and a tendency for greater MPc (1.4 kg higher, p<0.1) and less time unoccupied in the milking unit (4.5 percentage points lower, p<0.05) compared to farms feeding only roughage in the feed bunk. Farms with high part of Jersey cows milked in AMS had lower MPc (0.08 kg lower per each extra percentage point of Jersey, p< 0.01) and a tendency for lower MPu (3 kg lower per each extra percentage point of Jersey, p<0.1). Farms with high bulk tank somatic cell count (SCC >250) had both lower MPu (227 kg lower, p<0.001) and MPc (3 kg lower, p<0.01) compared to farms with SCC ≤250. Number of cows fetched to the milking unit had no effect on MPu or MPc. However, it seems important to fetch selected cows that do not milk voluntary. Farms with slatted floors had lower MPu (127 kg lower, p<0.05), MPc (3 kg lower, p<0.05) and more time unoccupied in the milking unit (4.5 percentage points higher, p<0.05) compared to farms with solid floor. Olika kotrafiksystem används för att få mjölkkor att passera roboten regelbundet i automatiska mjölkningssystem (AMS). Tidigare studier har inte kunnat påvisa någon tydlig skillnad i mjölkproduktion mellan olika trafiksystem. Det är troligt att lantbrukarens skötsel, intresse och engagemang har större betydelse för produktionen. Denna studie undersökte därför vilka faktorer som påverkar mjölkproduktion in AMS. Studien bestod av en litteraturstudie, en enkät som skickades ut till mjölkbönder med AMS, insamling av nyckeltal från de deltagande gårdarnas driftledningsprogram samt sex intervjuer med utvalda gårdar som lyckats nå hög mjölkproduktion. Resultatet från enkäten jämfördes med produktionsvariabler från driftledningsprogrammet. Mjölkproduktion definierades som mjölk per mjölkningsenhet och dag (MPu) och mjölk per ko och dag (MPc). Det visade sig att trafiksystem hade liten eller ingen påverkan på mjölkproduktionen, utan det var snarare lantbrukarens skötsel som hade betydelse. Gårdar som utfodrade med blandfoder hade högre MPu (113 kg högre, p<0.05), tendens för högre MPc (medel 1.4 kg högre, p<0.1) och mindre tid som mjölkningsenheten stod oanvänd (4.5 procentenheter lägre, p<0.05) jämfört med gårdar som utfodrade med endast grovfoder på foderbordet. Gårdar med hög andel Jerseykor som mjölkades i AMS hade lägre MPc (0.08 kg lägre per varje extra procentenhet av Jersey, p<0.01) och en tendens till lägre MPu (3 kg lägre per varje extra procentenhet Jersey, p<0.1). Gårdar med högt tankcelltal (SCC >250) hade både lägre MPu (227 kg lägre, p<0.001) och lägre MPc (3 kg lägre, p<0.01) jämfört med gårdar med SCC ≤250. Antal kor som hämtades till roboten hade ingen betydelse för MPu eller MPc. Hursomhelst verkar det viktigt att hämta utvalda kor som inte mjölkar sig frivilligt. Gårdar med spaltgolv hade lägre MPu (127 kg lägre, p<0.05), lägre MPc (3 kg lägre, p<0.001) samt mer tid som roboten stod oanvänd (4.5 procentenheter högre, p<0.05) jämfört med gårdar med fast golv. SLU/Dept. of Animal Nutrition and Management (until 231231) 2017 H2 eng swe https://stud.epsilon.slu.se/13110/ |
| spellingShingle | cow traffic automatic milking systems dairy cows milk production cow herd management Gustafsson, Linnea Production and management in automatic milking systems |
| title | Production and management in automatic milking systems |
| title_full | Production and management in automatic milking systems |
| title_fullStr | Production and management in automatic milking systems |
| title_full_unstemmed | Production and management in automatic milking systems |
| title_short | Production and management in automatic milking systems |
| title_sort | production and management in automatic milking systems |
| topic | cow traffic automatic milking systems dairy cows milk production cow herd management |