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Master Thesis

Effet de la dépose automatique débitmétrique et de son paramétrage sur la traite de la chèvre Alpine. Effet sur le temps de travail, la quantité et la qualité du lait, l'inflammation mammaire et les tissus du trayon

Abstract : Automatic milk cluster removers (ACR) are more and more used for goat milking, but their true impact and their optimal settings remain to be studied. This experiment was conducted in INRA/Agrocampus Ouest on 72 alpine goats submitted to 3 treatments throughout 18 weeks. By comparison to manual take-off with short overmilking (30s) and ACR settled at 200g/min, a threshold of 500g/min did not modify milk production and quality (protein content and lipolysis are even lightly improved), nor somatic cell count or clinical mastitis incidence. Therefore, teat congestion (measured with cutimeter) and teat tissue warming (measured by thermography) after milking, due to interaction with liner wall and tissues during pulsation are significantly minimized with the higher threshold level of 500g/min vs 200g/min or even more manual take-off with overmilking. Such a high setting also save 12 s of time per goat and per milking and help to detect goats with low milk flow and/or disequilibrium in milk flow between half udders. That can be an help for selection and culling in the flocks, and could be of big interest to limit udder health problems at the animal and flock levels. ACR with high threshold settings, additionally to the time saved and decrease in workload, appears as very efficient to limit bad impact of machine milking on teat tissues that could be particularly useful when material and settings are aggressive, without deleterious effect on milk performances.
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Master Thesis
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https://dumas.ccsd.cnrs.fr/dumas-01086950
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Submitted on : Tuesday, November 25, 2014 - 11:36:55 AM
Last modification on : Monday, July 6, 2020 - 3:38:21 PM
Long-term archiving on: : Thursday, February 26, 2015 - 11:10:41 AM

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Leïla Le Caro. Effet de la dépose automatique débitmétrique et de son paramétrage sur la traite de la chèvre Alpine. Effet sur le temps de travail, la quantité et la qualité du lait, l'inflammation mammaire et les tissus du trayon. Sciences agricoles. 2014. ⟨dumas-01086950⟩

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