Study of somatic cell count variations and hygiene status of dairy cattle
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Authors
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Yasser Hachana
Animal Production Department, High Agronmic Institute of Chott-Mariem 4042 Susa Tunisia
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Ghofrane Tibbini
Keywords:
Dairy cattle, Mastitis, Raw milk, Somatic cell count, Variations factors.Abstract
The purpose of this work was to study the main variation factors of somatic cell counts (SCC) in raw milk through the results of milk recording analyses over the last six years, and to try to establish an assessment of the infectious status of the controlled dairy herd. Study was carried out on 253 354 official milk recordings. Somatic cell count was significantly (p< 0.05) influenced by studied factors; season, lactation stage, lactation number and breed. The lowest average SCC was recorded in spring whereas the highest one was recorded in summer. As the cow's age increases, SCC tends to increase. Cows in first lactation had the lowest average SCC, while cows in 8th and 9th lactation had the highest. Holstein cows exhibited the highest SCC, while brown Swiss and Montbéliarde cows exhibited the lowest one. Based on SCC of raw milk, it was possible to establish an assessment of the infectious status of dairy herd. We could deduce that 47.98% of controlled dairy cows have a SCC less than 300 000 cells/ ml, indicating they’re mastitis free. Animals with SCC between 300 000 and 600 000 cells/ ml and animals with SCC between 600 000 and 1000 000 cells/ ml represented 17.1 and 11.7% of the controlled herd respectively. Animals with SCC exceeding 1 million cells/ ml represented 23% of total controlled dairy herd, indicating serious clinical mastitis problems. The SCC can be used as an effective tool in monitoring health status of dairy herds and preventing mastitis propagation.References
Archer SC, Mc Coy F, Wapenaar W, Green MJ (2013) Association of season and herd size with somatic cell count for cows in Irish, English, and Welsh dairy herds. Vet J 196: 515-521
Auldist MJ, Coats S, Rogers GL, Mc Dowell GH (1995) Changes in the composition of milk from healthy and mastitic dairy cows during the lactation cycle. Aust J Exp Agric 35: 427-436
Blowey R, Edmondson P (2010) Mastitis Control in Dairy Herds, 2nd Edn. CAB International London UK. pp 274
Bombade K, Kamboj A, Alhussien MN, Mohanty AK, Dang AK (2017) Diurnal variation of milk somatic and differential leukocyte counts of Murrah buffaloes as influenced by different milk fractions, seasons and parities. Biol Rhythm Res 49: 151-163
Cinar M, Serbester U, Ceyhan A, Gorgulu M (2015) Effect of Somatic Cell Count on Milk Yield and Composition of First and Second Lactation Dairy Cows. Ital J Anim Sci 14: 105-108
Coulon JB, Dauver F, Garel JP (1996) Facteurs de variation de la numération cellulaire du lait chez des vaches laitières indemnes de mammites cliniques. INRA Prod Anim 9: 133-139
Deluyker HA, Oye SNV, Boucher JF (2005) Factors affecting cure and somatic cell count after pirlimycin treatment of subclinical mastitis in lactating cows. J Dairy Sci 88: 604–614
De Vliegher S, Barkema HW, Stryhn H, Opsomer G, de Kruif A (2005) Impact of early lactation somatic cell count in heifers on milk yield over the first lactation. J Dairy Sci 8: 938–947
Dohoo IR, Meek AH (1982) Somatic cell counts in bovine milk. Can Vet J 23: 119
Eberhart RJ, Gilmore HC, Hutchinson LJ, Spencer SB (1979) Somatic cell counts in DHI samples. Nat Mast Coun p 32
Frössling J, Ohlson A, Hallén-Sandgren C (2017) Incidence and duration of increased somatic cell count in Swedish dairy cows and associations with milking system type. J Dairy Sci 100: 7368-7378
Harmon RJ (1994) Physiology of mastitis and factors affecting somatic cell counts1. J Dairy Sci 77: 2103-2112
Hogan S, Gonzalez N, Harmon J, Nickerson C, Oliver P, Pankey W, Smith L (1999) Laboratory Handbook on Bovine Mastitis. Nat Mast Council Madison WI USA
IDF. International Dairy Federation IDF, 141B (1996). Whole Milk, Determination of Milk Fat, Protein and Lactose Content, Guide for the Operation of Mid-Infrared Instruments, Brussels, Belgium
Jensen DL, Eberhart RJ (1981) Total and differential cell counts in secretions of the non lactating bovine mammary gland. Am J Vet Res 42: 743-747
Jones GM, Bailey TL (2009) Understanding the Basics of Mastitis Virginia Polytechnic Institute and State University Virginia Cooperative Extension
Khate K, Yadav BR (2010) Incidence of mastitis in Sahiwal cattle and Murrah buffaloes of a closed organized herd. Ind J Anim Sci 80: 467-469
Krol J, Brodziak A, Litwiñczuk Z, Litwiñczuk A (2013) Effect of age and stage of lactation on whey protein content in milk of cows of different breeds. Polish J Vet Sci 16: 395-397
Mijiæ P, Gantner V, Bobiæ T, Kuterovac K (2012) Variation of somatic cell count of dairy cattle in conditions of Mediterranean region in Croatia. Animal farming and environmental interactions in the Mediterranean region Wageningen Academic Publishers
Moroni P, Sgoifo Rossi C, Pisoni G, Bronzo V, Castiglioni B, Boettcher PJ (2006) Relationships Between Somatic Cell Count and Intramammary Infection in Buffaloes. J Dairy Sci 89:998–100
M’Sadak Y, Mighri L, Kraiem K (2013) Situation sanitaire mammaire et pertes quantitatives laitières générées par les élévations cellulaires dans des élevages bovins hors sol en Tunisie. Algerian J Arid Env 3: 74-85
Nyman AK., Ekman T, Emanuelson U, Gustafsson AH, Holtenius K, Waller KP, Sandgren CH (2007) Risk factors associated with the incidence of veterinary-treated clinical mastitis in Swedish Dairy herds with a high milk yield and a low prevalence of subclinical mastitis. Prev. Vet. Med 78:142–160
Norman HD, Miller RH, wright JR, Wiggans GR (2000) Herd and state means for somatic cell count from dairy herd improvement. J Dairy Sci 83: 2782-2788
Olde Riekerink RGM, Barkema HW, Stryhn H (2007) The effect of season on somatic cell count and the incidence of clinical mastitis. J Dairy Sci 90: 1704-1715
Olde Riekerink RGM, Barkema HW, Kelton DF, Scholl DT (2010) Incidence case of clinical mastitis on Canadian dairy farms. J Dairy Sci 91: 1366-1377
Petzer IM, Karzis J, Donkin EF, Webb EC, Etter EMC (2017) Somatic cell count thresholds in composite and quarter milk samples as indicator of bovine intramammary infection status. Onderstepoort. J Vet Res 84: 1-10
Radostits OM, Leslie KE, Fetrow J (1994) Herd Health: Food Animal Production Medicine. 2nd edtn. W.B. Saunders Co., Philadelphia, PA
Rupp R, Boichard D (2001) Numérations cellulaires du lait et mammites cliniques: relations phénotypique et génétique chez les vaches Prim’Holstein. INRA Prod Anim 14: 193-200
Rupp R, Boichard D, Bertrand C, Bazin S (2000) Bilan national des numérotations cellulaires dans le lait des différentes races bovines laitières françaises. INRA Prod Anim 13: 257-267
Schepers AJ, Lam TJGM, Schukken YH, Wilmink JBM, Hanekamp WJA (1997) Estimation of variance components for somatic cell counts to determine thresholds for uninfected quarters. J Dairy Sci 80: 1833-1840
Schukken YH, Leslie KE, Weersink AJ, Martin SW (1992) Ontario bulk milk somatic cell count reduction program 1 Impact on somatic cell counts and milk quality. J Dairy Sci 75: 3352-3358
Schukken YH, Wilson DJ, Welcome F, Garrison-Tikofsky L, Gonzalez RN (2003) Monitoring udder health and milk quality using somatic cell counts. Vet Res. 34: 579–596
Sheldrake RF, Hoare RJT, McGregor GD (1983) Lactation stage, parity, and infection affecting somatic cells, electrical conductivity, and serum albumin in milk. J Dairy Sci 66: 542–547
Singh M. Ludri RS (2001) Influence of stage of lactation, Parity and Season on Somatic cell count in cows. Asian-Austral J Anim Sci 14: 1775-1780
Skrzypek R, Wojtowaski J, Fahr RD (2004) Factors affecting somatic cell count in cow bulk tank milk: A case study from Poland. J Vet Medi 51: 127-131
Vakkamaki J, Taponen S, Heikkilä A, Pyörälä S (2017) Bacteriological etiology and treatment of mastitis in Finnish dairy herds. Acta Vet Scand 59: 2-9
Walsh S, Buckley F, Berry DP, Rath M, Pierce K, Byrne N, Dillon P (2007) Effects of breed, feeding system, and parity on udder health and milking characteristics. J Dairy Sci 90: 5767-5779
