ICAR Technical Series no. 7 - Nitra Proc.

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O'CallaghanTable 10. Vacuum fluctuation in a full cycle - cluster x pulsation x flow interaction for alow-level milking unit.Flow(l/min) 0 4 6 8 s.e.dCluster Pulsation 1 2 1 2 1 2 1 2 0.611 3.0 2.8 21.4 16.9 24.4 18.7 27.0 21.04 2.4 2.3 14.8 13.8 20.8 17.4 23.1 18.95 1.6 2.0 8.8 8.6 11.9 12.0 13.4 13.46 2.8 2.9 11.9 7.0 15.8 7.9 17.5 7.9Luczycka, D., 1993; The milking parameters and back flow in chosenmilking systems. Zeszyty Problemowe Postepow Nauk Rolniczych,pp. 145-155.ReferencesNordegren, S.A., 1980; Proceedings of International Workshop onMachine Milking and Mastitis. An Foras Taluntais, Moorepark, Fermoy,Co Cork, Ireland, 91-102.O’Callaghan, E.J., 1989; Measurement of cluster stability and itsrelationship to liner design and physical setting of the milking machine.PhD .Thesis.University College Dublin, Ireland.O’ Callaghan, E.J., 1997; Comparison of testing systems forevaluating milking units. In Proceedings of International Conference onMachine Milking and Mastitis. May 1997, Cork, Ireland, ISBN 1 901138 151.Osteras, O and A. Lund,A., 1980; The correlation between milk flow,vacuum fluctuations and decrease in vacuum in the long milk tube and atthe claw in different milking machines. An Introductory Examination.Nord.Vet.-Med 32:281-290.Stewart, S.R., 1997; Vacuum level measurement using flowsimulation. Proceedings of the 36 th Annual Meeting. National MastitisCouncil, Albuquerque, NM, USA, pp. 97-100.Woyke,W and F. Czarnocinski, 1993; Banadie RzeczywistychSpadkow Podcisnienia W Aparatach Udcjowych Dojarek Mechanicznych.Zeszyty Problemowe Postepow Nank Rolniczych, pp. 125-131.Wiercioch, M and J. Szlachta, 1994; Komputerowy System PomiaruI Wyznaczania Parametrow Doju Mechanicznego W WarunkachLaboratoryjnych. Zeszyty Problemowe Postepow Nank Rolniezyh, 416,pp. 57-67.ICAR Technical Series - No 747
Marnet et al.Comparative study of physiologicalresponses of cows to classical versusautomatic system of milkingP.G. Marnet, H. Aupetit , J.F. Combaud, J. Portanguen & J.M. AubryENSAR/INRA, Research on milk production,65 rue de S t Brieuc, 35000 Rennes, FranceE-mail: marnet@roazhon.inra.frEight cows were controlled during 2 weeks of classical milking techniquein a side by side parlor and the first 4 succeeding weeks of adaptation toan automatic milking system (AMS). Milk production and composition,milk emission kinetics, oxytocin release and teat end reaction weremeasured 4 times per week during all the experiment. The milk productionand lactation persistency, the milk composition and the C.C.S are notsignificantly affected during the adaptation period to the AMS. There is agood massaging of the teat during milking. That suggests a normal functionof the liner in the special cup of the AMS. The mean flow rate have just atendency to be lowered by AMS that confirm the good quality of themilking machine of the AMS. Therefore, there is a significant reduction ofthe oxytocin release when cows are milked by the AMS with acorresponding increasing number of bimodal milk emission kinetics. Thisresult remain significant even when we take only in account the goodmilking procedures in the AMS (without any failure, delay in cupattachment or cluster fall). That suggests a poor efficiency of the udderpre-stimulation in our AMS. Additionally, we cannot eliminate a potentialchronic inhibition of the milk ejection reflex by the robotic surroundingsduring the 4 weeks despite a clear improvement of the AMS efficiencywith a reduction of more than 15% of the second, third and fourth trialsfor attachment procedures of the teat cups.SummaryKey words: Machine milking, milk production, milk flow, teat reaction, oxytocin.It is well known that the most important stimuli are pre-milkingpreparation and the action of the machine milking (Woolford, 1987). In anAMS, the pre-milking preparation consists in mechanical cleaning of theteats and foremilking by the machine. When the udder or the teat arebrushed, a positive effect on milk let down and oxytocin release have beendescribed (Shuiling, 1992, Macuhova and Bruckmaier et al., 2000). However,no data exists about the stimulation efficiency of foremilking with waterIntroductionICAR Technical Series - No 749
Page 2 and 3: The designationsemployed and thepre
Page 4 and 5: The organisers of the meeting want
Page 6 and 7: Milking variables in relation to te
Page 8 and 9: Modelling of liner behaviour using
Page 10 and 11: ForewordThe second half of the part
Page 13 and 14: Rosatiorganizations. The “Lactati
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Page 25 and 26: de Koning & HuijsmanThe Dutch Quali
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Page 29 and 30: de Koning & HuijsmanThe pulsation c
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Page 33 and 34: Tancin et al.Physiology of milk let
Page 35 and 36: Tancin et al.In the dairy practice
Page 37 and 38: Tancin et al.Mayer, H., D. Schams,
Page 39 and 40: Effect of machine milking on teatIn
Page 41 and 42: Effect of machine milking on teatBe
Page 43 and 44: Effect of machine milking on teatTa
Page 45 and 46: Effect of machine milking on teatNe
Page 47 and 48: Measurements of vacuum stabilityInt
Page 49 and 50: Measurements of vacuum stabilityTab
Page 51: Measurements of vacuum stabilityFor
Page 55 and 56: Marnet et al.production during the
Page 57 and 58: Marnet et al.prestimulation by the
Page 59 and 60: Worstorff & BilgeryEffects of liner
Page 61 and 62: Worstorff & BilgeryTable 1 summaris
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Page 65 and 66: Differential staining of somatic ce
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Page 73 and 74: Evaluation of milking routine by La
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Page 77 and 78: Fryc et al.The assessment parameter
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Page 83 and 84: Milking devices disturbance on SCCm
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Page 87 and 88: Milking devices disturbance on SCCT
Page 89 and 90: Turki & WinnickiMilking variables i
Page 91 and 92: Table1. Milk flow time from in indi
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Page 95 and 96: Turki & WinnickiMayer H., Schams D.
Page 97 and 98: Milk recording in GermanyTable 1. E
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Main fields ofactivities of theGerm
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Influence of duration of a and c ph
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Nosal & BilgeryVibrations and vacuu
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Nosal & BilgerykPa45.645.445.245.04
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Nosal & BilgeryIn case of problems
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Testing of vacuum during milkingEva
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Testing of vacuum during milkingthe
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Ryšánek et al.Vacuum fluctuation
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Ryšánek et al.Teat injuries were
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Ryšánek et al.Particular attentio
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de KoningAutomatic milking:Chances
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de Koningfor some time after the mi
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de KoningMilk quality is without do
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de Koningwhen the bulk tank is empt
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de KoningLand, A. van ‘t et al, 2
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Characterising the farms equipped w
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Designing optimal robotic milking b
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ArtmannThe effects of automatic mil
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ArtmannData was collected on the ma
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ArtmannThe differences of the co-ef
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BarthEvaluation of somatic cell cou
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BarthTable 1. Determined and real m
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Barthyield is often a side effect o
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Milking parameters in modified milk
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Pallas & WendtThe development of ud
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Pallas & WendtSCC (x 1,000) / ml250
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Pallas & WendtTrilk, J. und Münch,
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Udder health and milk low profilesA
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Udder health and milk low profilesD
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AMS in Czech RepublicThis farm size
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AMS in Czech RepublicTable 1. Effec
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AMS in Czech RepublicFigure 1. Stab
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BruckmaierSpecific aspects of milk
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Bruckmaiertowards the end of lactat
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BruckmaierBruckmaier, R.M., D. Scha
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Teat callosity and mastitisResultsT
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de Koning et al.Milking characteris
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de Koning et al.Table 1. Statistica
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Influence of ageing on linersThe re
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Neijenhuis & HogeveenMilking interv
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Knízková et al.Effect of old and
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Knízková et al.Thermograms of the
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Knízková et al.Kunc, P., Knízkov
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Postmilking teat disinfectingIntrod
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Postmilking teat disinfectingNDT an
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Los & MaškováTeatcup hardness aft
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Los & MaškováIt follows from the
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Trends in milking equipmentThe fina
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Olechnowicz & TurkiMilking and milk
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Table 2. Milk components and somati
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Lipinski et al.Effect of some selec
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Lipinski et al.Milk hygiene quality
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Lipinski et al.1. The technical and
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Effect of two milking systems on te
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Effect of two milking systems on te
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Milk quality and mastitis monitorin
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Nitra in ICAR interlaboratory studi
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Botto et al.Effect of ultrasound in
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Báder et al.Change of udder confor
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Báder et al.6050%4030201.scor.2.sc
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Luger et al.Effect of inclination a
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Luger et al.There is no difference
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Harty et al.Modelling of liner beha
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Harty et al.A solid plane was const
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Provolo & SangiorgiUsing daily data
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Provolo & SangiorgiFigure 3. Averag
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Provolo & SangiorgiFigure 7. Cow no
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Provolo & Sangiorgistandardisation
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Cognome/iInhibition of oxytocin rel
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Tancin et al.Milk flow patterns: in
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Szlachta & AleksanderThe influence
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Szlachta & Aleksanderforces in the
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Szlachta & Aleksanderpressure diffe
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List of participantsŠtefan BodoSPU
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List of participantsMarian GregušI
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List of participantsMarija KlopcicD
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List of participantsŠtefan MihinaV
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List of participantsEduard Pravnans
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List of participantsJozef Tonhauser
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ICAR Technical Series no. 7 - Nitra Proc.

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