The effect of udder precleaning on milk quality and yield
This study was performed in Vietnam as a minor field study. The country has a fast growing demand of dairy products, but too few dairy cattle to produce enough quantity of milk. This problem is at present solved by import of milk from countries such as the United States, Australia and the Netherland...
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| Formato: | Otro |
| Lenguaje: | sueco Inglés |
| Publicado: |
2008
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| Acceso en línea: | https://stud.epsilon.slu.se/12211/ |
| _version_ | 1855572021456404480 |
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| author | Jonsson, Lina |
| author_browse | Jonsson, Lina |
| author_facet | Jonsson, Lina |
| author_sort | Jonsson, Lina |
| collection | Epsilon Archive for Student Projects |
| description | This study was performed in Vietnam as a minor field study. The country has a fast growing demand of dairy products, but too few dairy cattle to produce enough quantity of milk. This problem is at present solved by import of milk from countries such as the United States, Australia and the Netherlands. The dairy sector is fairly new in Vietnam and the knowledge about dairy farming is rather poor. The Vietnamese farmers need to improve their knowledge in how to keep the dairy cattle, in order to increase the countries own dairy production. The udder health of the dairy cattle is one important factor in order to raise the milk yield. A way of measure the udder health and milk quality is by milk somatic cell count (SCC) and the total bacteria count (TBC). These two factors are affected by bacteria in the surrounding and a way of limiting them is by cleaning the teat before the milking is done. The aim with the current study was to examine if a proper cleaning before milking, would result in, a lower bacteria number, a reduced milk SCC and thereby a higher milk quality.
The experiment was performed by a change over design with four different treatments. The treatments was; hand milking and traditional precleaning, hand milking with properly precleaning, bucket machine milking with traditional precleaning and bucket machine milking with properly precleaning. The study was carried out 40 km north west of Ho Chi Minh City (HCMC) on 12 Holstein-Friesian cows. They were milked twice a day and the experimental period lasted for 40 days with 10 days within each treatment.
It was found that the hand milking treatments gave a higher yield in the afternoon milking compared with the machine milking (P< 0.05). The SCC was high for all four treatments, but no significant difference was found between the treatments. There was a large variation between different cows and also within the same animals but in different days. The TBC differed significant between the periods where period 2 had low values of bacteria. However, there was no significance found between the treatments. |
| format | Otro |
| id | RepoSLU12211 |
| institution | Swedish University of Agricultural Sciences |
| language | Swedish Inglés |
| publishDate | 2008 |
| publishDateSort | 2008 |
| record_format | eprints |
| spelling | RepoSLU122112017-11-02T11:32:54Z https://stud.epsilon.slu.se/12211/ The effect of udder precleaning on milk quality and yield Jonsson, Lina Animal feeding This study was performed in Vietnam as a minor field study. The country has a fast growing demand of dairy products, but too few dairy cattle to produce enough quantity of milk. This problem is at present solved by import of milk from countries such as the United States, Australia and the Netherlands. The dairy sector is fairly new in Vietnam and the knowledge about dairy farming is rather poor. The Vietnamese farmers need to improve their knowledge in how to keep the dairy cattle, in order to increase the countries own dairy production. The udder health of the dairy cattle is one important factor in order to raise the milk yield. A way of measure the udder health and milk quality is by milk somatic cell count (SCC) and the total bacteria count (TBC). These two factors are affected by bacteria in the surrounding and a way of limiting them is by cleaning the teat before the milking is done. The aim with the current study was to examine if a proper cleaning before milking, would result in, a lower bacteria number, a reduced milk SCC and thereby a higher milk quality. The experiment was performed by a change over design with four different treatments. The treatments was; hand milking and traditional precleaning, hand milking with properly precleaning, bucket machine milking with traditional precleaning and bucket machine milking with properly precleaning. The study was carried out 40 km north west of Ho Chi Minh City (HCMC) on 12 Holstein-Friesian cows. They were milked twice a day and the experimental period lasted for 40 days with 10 days within each treatment. It was found that the hand milking treatments gave a higher yield in the afternoon milking compared with the machine milking (P< 0.05). The SCC was high for all four treatments, but no significant difference was found between the treatments. There was a large variation between different cows and also within the same animals but in different days. The TBC differed significant between the periods where period 2 had low values of bacteria. However, there was no significance found between the treatments. Denna studie utfördes i södra Vietnam och var en Minor Field study. Vietnam har ett ökande behov av mjölkprodukter som den inhemska produktionen inte har kapacitet att mätta. På grund av detta importeras stora mängder mjölkprodukter från länder som USA, Australien och Nederländerna. För att öka den inhemska produktionen av mjölk måste lantbrukarna få ökade kunskaper i hur de ska hålla och sköta sina kor. En viktig faktor för att få en ökad mjölkmängd och bättre kvalitet på mjölken är kornas juverhälsa. Denna kan mätas genom antalet celler och antalet bakterier i mjölken. Dessa påverkas av bakterier som finns i kornas omgivning och ett sätt att minska antalet bakterier är att tvätta kornas spenar före mjölkning. Syftet med denna studie var att undersöka om väl genomförd tvättning av spenarna innan mjölkning leder till en bättre mjölkkvalité med ett lågt antal av bakterier och celler. Försöket gjordes genom att fyra olika behandlingar växlades mellan 12 kor. Behandlingarna var; handmjölkning med respektive utan förtvätt av spenarna och maskinmjölkning med respektive utan förtvätt av spenarna. Tolv kor av Holstein-friesian korsningar fanns på en gård 40 km nordväst om Ho Chi Minh City (HCMC). De mjölkades två gånger per dag och hela provtagningen skedde i 40 dagar med 10 dagar i sträck i varje behandling. Korna som mjölkades för hand hade en högre mjölkavkastning jämfört med de som mjölkades med maskin (P< 0,05). Celltalen var höga inom alla behandlingar, med det gick ej att se någon signifikant skillnad mellan dem. Det var en stor variation mellan de olika kornas celltal och även inom samma ko, fast vid olika provtagningstillfällen. Det fanns en skillnad mellan de olika perioderna med avseende på det totala antalet bakterier och här är det speciellt den andra perioden som urskiljer sig med låga värden. Det fanns ingen signifikant skillnad av antalet bakterier mellan behandlingarna. 2008-10-14 Other NonPeerReviewed application/pdf sv https://stud.epsilon.slu.se/12211/1/jonsson_l_171102.pdf Jonsson, Lina, 2008. The effect of udder precleaning on milk quality and yield. UNSPECIFIED, Uppsala. Uppsala: (VH) > Dept. of Animal Nutrition and Management (until 231231) <https://stud.epsilon.slu.se/view/divisions/OID-650.html> urn:nbn:se:slu:epsilon-s-8556 eng |
| spellingShingle | Animal feeding Jonsson, Lina The effect of udder precleaning on milk quality and yield |
| title | The effect of udder precleaning on milk quality and yield |
| title_full | The effect of udder precleaning on milk quality and yield |
| title_fullStr | The effect of udder precleaning on milk quality and yield |
| title_full_unstemmed | The effect of udder precleaning on milk quality and yield |
| title_short | The effect of udder precleaning on milk quality and yield |
| title_sort | effect of udder precleaning on milk quality and yield |
| topic | Animal feeding |
| url | https://stud.epsilon.slu.se/12211/ https://stud.epsilon.slu.se/12211/ |