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Effects of overmilking and liner type and characteristics on teat tissue in small ruminants

  • Manuel Alejandro (a1), Amparo Roca (a1), Gema Romero (a1) and José-Ramón Díaz (a1)

Abstract

The aim of this work was to study the effect on teat wall thickness and canal length in sheep and goats of overmilking for 2 min (OM+2) and of milking with used (AL; +3000 milkings) and twisted (TL; 45°) liners in sheep and goats, as well as the effect of milking goats with liners designed for sheep (SL, shorter length and diameter than liners for goats). To this end, we performed four experiments in goats and three in sheep, in a Latin square design with two experimental periods. During the experimental period 4 controls were carried out, performing ultrasound scans before and immediately after milking to determine the teat wall thickness (TWT), teat wall area (TWA), teat end area (TEWA) and teat canal length (TCL). OM+2 caused a significant increase in TWT, TWA, TEWA and TCL in goats and in TWA, TEWA and TCL in sheep. Liner features had a strong influence on the variables studied; aged liners caused significant changes in TWT and TCL in goats and in TWT in sheep; twisted liners produced a significant effect on the increase of TWT and TCL in goats, without reaching significance level in sheep; and milking goats with sheep liners led to a significant increase in TWT, TWA, TEWA and TCL. In practice, it is therefore important to avoid overmilking and the use of worn-out liners. It is also necessary to use liners designed for the morphological features of each species, taking special care to carry out periodic liner positioning revisions to ensure the benefits of pulsation on the teat end. Finally, it would be necessary to carry out long-term experiments to study whether the increase in thickness observed in some experiments is sufficient to affect milking efficiency and mammary gland health status.

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Corresponding author

*For correspondence; e-mail: jr.diaz@umh.es

References

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Alejandro, M, Rodriguez, M, Peris, C & Díaz, JR 2014 Study of ultrasound scanning as method to estimate changes in teat thickness due to machine milking in Manchega ewes. Small Ruminant Research (in press).
Boast, D, Hale, M, Turner, M & Hillerton, JE 2008 Variation in rubber chemistry and dynamic mechanical properties of the milking liner barrel with age. Journal of Dairy Science 91 22472256
Davis, M, Reinemann, D & Mein, G 1999 Measurement of change of liner properties with age. Presented at The ASAE Annual International Meeting, Toronto, Canada Paper 99-3017 ASAE St Joseph MI
Davis, M, Reinemann, D & Mein, G 2000 Relationships between physical characteristics and milking characteristics of the aging milking liner. Presented at The ASAE Annual International Meeting, Milwaukee Paper 00-3014 ASAE St Joseph MI
Díaz, J, Romero, G, Perez, M, Soriano, J, Moya, F, Peris, C & Fernández, N 2004 Characterization of Mechanical Milking Goat Farms in the Region of Murcia. I Parlours and Types of Machines. Libro de actas de XXIX Jornadas Cientificas y VII Internacionales de la SEOC. Lleida, Spain: Lleida Diputación de Lleida
Díaz, JR, Alejandro, M, Peris, C & Fernández, N 2013 Use of ultrasound scanning to estimate teat wall thickness in Murciano-Granadina goats. Livestock Science 155 114122
Fernandez, N, Requena, R, Beltran, M, Peris, C, Rodríguez, M, Molina, P & Torres, A 1997 Comparison of differente machine milkinf clusters on dairy ewes with large size teats. Annales de Zootechnie 46 207218
Gleeson, DE, O'callaghan, EJ & Rath, MV 2002 Effect of milking on bovine teat tissue as measured by ultrasonography. Irish Veterinary Journal 55 628632
Gleeson, DE, Jilroy, D, O`Callaghan, EJ, Fitzpatrick, E & Rath, MV 2003 Effect of machine milking on bovine teat sinus injury and teat canal keratin. Irish Veterinary Journal 56 4650
Gutierrez, J & Romero, G 2006 Characteristics of the Milking Parlours in the Farm of the National Association of Churra Sheep (ANCHE). Libro de actas de XXXI Jornadas Cientificas y X Internacionales de la SEOC. Castilla y Léon, Spain: Zamora, Junta de Castilla y León
Hamann, J & Osteras, O 1994 II special aspects in: teat tissue reactions to machine milking and new infection risk. International Dairy Federation 297 3541
Hillerton, J, Pankey, J & Pankey, P 2002 Effect of over-milking on teat condition. Journal of Dairy Research 69 8184
Hillerton, JE, Boast, D, Middleton, N & Ohnstad, I 2004 Changes in milking liner performance with age. In: 100 Years with Liners and Pulsators in Machine Milking. IDF Bulletin No 388, International Dairy Federation, Brussels, Belgium 35–40
International Dairy Federation 2006 Continuous monitoring of machine milking. Bulletin of the international Dairy Federations 404 130
Isaksson, A & Lind, O 1992 Teat reactions in cows associated with machine milking. Journal of Veterinary Medecine 39 282288
Mein, GA 1992 Action of the cluster during milking. In Machine Milking and Lactation, pp. 97140 (Eds Bramley, AJ, Dodd, FH, Mein, GA & Bramley, JA), Berks, UK: Insight Books
Mein, GA & Reinemann, DJ 2009 Biomechanics of milking: teat – liner interactions. Paper number 09743 presented at The 2009 ASABE Annual International Meeting, Reno, Nevada. ASABE St Joseph MI
Mein, GA, Brown, M & Williams, D 1983 Pulsation failure as a consequence of milking with short cup liners. Journal of Dairy Research 50 249258
Mein, GA, Williams, D & Reinemann, DJ 2003 Effects of milking on teat-end hyperkeratosis:1 Mechanical forces applied by the teatcup liner and responses of the teat. In National Mastitis Council Regional Meetings Proceedings, pp. 114123. Fort Worth, TX, Madison, WI: National Mastitis Council
Menzies, PI 2000 Mastitis of sheep-overview of recent literature. In Proceedings of the 6th Great Lakes Dairy Sheep Symposium, pp. 6876. Guelph
Neijenhuis, F, Klungel, GH & Hogeveen, H 2001 Recovery of cow teats after milking as determined by ultrasonography scanning. Journal of Dairy Science 84 25992606
Pařilova, M, Stadnik, L, Ježkova, A & Štolc, L 2011 Effect of milking vacuum level and overmilking on cows´ teat characteristics. Acta universitatis agriculturae et silviculturae mendelianae brunensis LIX, pp. 193202
Paulrud, C, Clausen, S, Andersen, PE & Rasmussen, MD 2005 Infrared thermography and ultrasonography to indirectly monitor the influence of liner type and overmilking on teat tissue recovery. Acta Veterinarya Scandinava 46 137147
Peris, S, Caja, G & Such, X 1999 Relationships between udder and milking traits in Murciano-Granadina dairy goats. Small Ruminant Research 33 171179
Rasmussen, MD 2004 Overmilking and teat condition. National Mastitis Council, Annual Meeting Proccedings, pp. 169175
Rasmussen, MD, Frimer, ES & Decker, EL 1994 Reverse pressure gradients across the teat canal related to machine milking. Journal of Dairy Science 77 984993
Rønningen, O & Reitan, A 1990 Influence of static and dynamic teat characteristics and milking time on udder health in Norwegian red cattle. Journal of Diary Research 57 171177
Spencer, S, Shin, JW, Rogers, G & Cooper, J 2007 Effect of vacuum and ratio on the performance of a monoblock silicone milking liner. Journal of Dairy Science 90 17251728
Tangorra, F, Costa, A & Guidobono, A 2012 Preliminary results of a field study on goats milk yield and lactation persistency as affected automatic cluster removals. International Conference Ragusa, Italy Work Safety and Risk Prevention in Agro-food and Forest Systems, pp. 592598
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Journal of Dairy Research
  • ISSN: 0022-0299
  • EISSN: 1469-7629
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