| تعداد نشریات | 24 |
| تعداد شمارهها | 863 |
| تعداد مقالات | 7,715 |
| تعداد مشاهده مقاله | 13,772,755 |
| تعداد دریافت فایل اصل مقاله | 11,819,539 |
Monitoring udder health status using somatic cell counts in Holstein dairy herds located in north-east of Iran and effectiveness of 10-point mastitis control program | ||
| Iranian Journal of Veterinary Research | ||
| دوره 22، شماره 4 - شماره پیاپی 77، 2021، صفحه 326-330 اصل مقاله (260.97 K) | ||
| نوع مقاله: Short paper | ||
| شناسه دیجیتال (DOI): 10.22099/ijvr.2021.40046.5805 | ||
| نویسندگان | ||
| M. R. Rahimi1؛ B. Khoramian2؛ M. Drillich3؛ M. Azizzadeh* 2 | ||
| 1Graduated from Faculty of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, Iran | ||
| 2Department of Clinical Sciences, Faculty of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, Iran | ||
| 3Clinical Unit for Herd Health Management in Ruminants, University Clinic for Ruminants, Department for Farm Animals and Veterinary Public Health, University of Veterinary Medicine Vienna, Vienna, Austria | ||
| چکیده | ||
| Background: The somatic cell count (SCC) of individual cow samples is a useful proxy for monitoring udder health status. Aims: The present study aimed to provide updated information about udder health in Iranian Holstein dairy cattle, and to quantify the effectiveness of the mastitis control program. Methods: A total of 17,990 monthly test-day records from 1,663 Holstein dairy cattle in 10 “regular” herds and 2,389 test-day records from 386 Holstein dairy cattle in 2 herds that were assigned to the 10-point mastitis control program (“controlled” herds) were included. Each test-day record comprised the date of recording, daily milk production (kg), fat and protein (%), days in milk, parity, and SCC. Results: Median (Q1-Q3) SCC × 103 for “regular” and “controlled” herds were 136 (52-391) and 64 (24-204) cells/ml, respectively. Also, the percentage of records containing SCC >200,000 cells/ml (elevated SCC) for these groups were 40.3% and 25.5%, respectively. Mixed effects logistic analysis revealed that milk records from cows in the first lactation, early lactation, and with >40 kg daily milk yield had lower odds of elevated SCC. The odds of elevated SCC were lower in summer and autumn than in winter. Conclusion: Host and environmental characteristics influence SCC. This should be considered for the interpretation of SCC results. Mastitis control programs can support dairy producers to reach a standard level of udder health. | ||
| کلیدواژهها | ||
| Dairy cow؛ Iran؛ Mastitis control program؛ Somatic cell count؛ Udder health | ||
| مراجع | ||
|
Atasever, S and Stadnik, L (2015). Factors affecting daily milk yield, fat and protein percentage, and somatic cell count in primiparous Holstein cows. Indian J. Anim. Res., 49: 313-316.
Blowey, RW and Edmondson, P (2010). Mastitis control in dairy herds. 2nd Edn., Cambridge, CAB International. PP: 152-170.
Bolourchi, M; Mokhber, DM; Kasravi, R; Moghimi, EA and Hovareshti, P (2008). An estimation of national average of milk somatic cell count and production losses due to subclinical mastitis in commercial dairy herds in Iran. J. Vet. Res., 63: 263-266.
Bradley, A and Green, M (2005). Use and interpretation of somatic cell count data in dairy cows. In Pract., 27: 310-315.
Chegini, A; Hossein-Zadeh, NG; Hosseini-Moghadam, H and Shadparvar, AA (2017). Effect of somatic cell count on milk fat and protein in different parities and stages of lactation in Holstein cows. Acta Agric. Slov., 110: 37-45.
Constable, PD; Hinchcliff, KW; Done, SH and Grünberg, W (2016). Veterinary medicine: A textbook of the diseases of cattle, horses, sheep, pigs and goats. 11th Edn., China, Elsevier Health Sciences. PP: 1912-1970.
Goncalves, JL; Cue, RI; Botaro, BG; Horst, JA; Valloto, AA and Santos, MV (2018a). Milk losses associated with somatic cell counts by parity and stage of lactation. J. Dairy Sci., 101: 4357-4366.
Goncalves, JL; Kamphuis, C; Martins, CMMR; Barreiro, JR; Tomazi, T; Gameiro, AH; Hogeveen, H and dos Santos, MV (2018b). Bovine subclinical mastitis reduces milk yield and economic return. Livest. Sci., 210: 25-32.
Green, L; Schukken, Y and Green, M (2006). On distinguishing cause and consequence: Do high somatic cell counts lead to lower milk yield or does high milk yield lead to lower somatic cell count? Prev. Vet. Med., 76: 74-89.
Hand, KJ; Godkin, A and Kelton, DF (2012). Milk production and somatic cell counts: A cow-level analysis. J. Dairy Sci., 95: 1358-1362.
Harmon, RJ (1994). Physiology of mastitis and factors affecting somatic cell counts. J. Dairy Sci., 77: 2103-2112.
Hawkins, D (2019). Use of different somatic cell count cut-points to define intramammary infection at drying off in dairy cows from a herd with a high somatic cell count. NZ Vet. J., 67: 203-209.
Hiitio, H; Vakkamaki, J; Simojoki, H; Autio, T; Junnila, J; Pelkonen, S and Pyorala, S (2017). Prevalence of subclinical mastitis in Finnish dairy cows: changes during recent decades and impact of cow and herd factors. Acta Vet. Scand., 59: 1-14.
Huijps, K; Lam, TJ and Hogeveen, H (2008). Costs of mastitis: facts and perception. J. Dairy Res., 75: 113-120.
Kern, EL; Cobuci, JA; Neto, JB and dos Santos Daltro, D (2019). Relationship between somatic cell score and longevity of Holstein cows in Brazil using a piecewise Weibull proportional-hazard model. Anim. Prod. Sci., 59: 1546-1552.
Kheirabadi, K (2018). Bayesian analysis of random regression models to model test-day somatic cell score of primiparous Holstein cattle in Iran. J. Appl. Anim. Res., 46: 677-684. Laevens, H; Deluyker, H; Schukken, YH; De Meulemeester, L; Vandermeersch, R; De Muelenaere, E and De Kruif, A (1997). Influence of parity and stage of lactation on the somatic cell count in bacteriologically negative dairy cows. J. Dairy Sci., 80: 3219-3226.
Sadeghi-Sefidmazgi, A and Rayatdoost-Baghal, F (2014). Effects of herd management practices on somatic cell counts in an arid climate. Rev. Bras. Zootec., 43: 499-504.
Saravanan, R; Das, DN; De, S and Panneerselvam, S (2015). Effect of season and parity on somatic cell count across zebu and crossbred cattle population. Indian J. Anim. Res., 49: 383-387.
Sharma, N; Singh, N and Bhadwal, M (2011). Relationship of somatic cell count and mastitis: An overview. Asian-Australas. J. Anim. Sci., 24: 429-438.
Zucali, M; Bava, L; Tamburini, A; Brasca, M; Vanoni, L and Sandrucci, A (2011). Effects of season, milking routine and cow cleanliness on bacterial and somatic cell counts of bulk tank milk. J. Dairy Res., 78: 436-441. | ||
|
آمار تعداد مشاهده مقاله: 812 تعداد دریافت فایل اصل مقاله: 529 |
||