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Characterization and Pattern of Culling in Goats | ||
| Archives of Razi Institute | ||
| مقاله 16، دوره 74، شماره 4، اسفند 2019، صفحه 441-446 اصل مقاله (121.17 K) | ||
| نوع مقاله: Short Communication | ||
| شناسه دیجیتال (DOI): 10.22092/ari.2019.125298.1301 | ||
| نویسندگان | ||
| M. Didarkhah* 1؛ M. Vatandoost2؛ E. Dirandeh3؛ N. Dadashpour Davachi* 4 | ||
| 1Faculty of Agriculture Sarayan, University of Birjand, Birjand, Iran | ||
| 2Department of Agriculture, Payame Noor University | ||
| 3Department of Animal Science, Sari Agricultural Sciences and Natural Resources University, Sari, Mazandaran, Iran | ||
| 4Department of Research, Breeding and Production of Laboratory Animals, Razi Vaccine and Serum Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran | ||
| چکیده | ||
| In order to describe the proportion and pattern of culling in commercial goatherds, this survey was carried out in an industrialized goatherd in Torbat-e-Jam, Iran, over a period of 18 years from 1996 to 2013. In total, the data of 3945 goats were used in this study. Finally, out of all samples, 499 (12%) goats were culled. The involuntary culling was performed mainly due to shortage disorders (3.8%), viral disorders (3.3%), microbial diseases (2.8%), and other disorders (2.1%). Sheep pox was the most important reason (64%) for culling due to viral disorders. Tick paralysis was the most common parasitic disease that contributed to culling and responsible for 88% of parasitic disorders. On the other hand, enterotoxemia accounted for 55% of microbial disorders is considered the most common cause of culling. The high proportion of culling due to shortage disorders, especially nutritional deficiencies should be considered the most important cause of culling. It requires precautionary measures and planning in order to reduce the aforementioned rate. | ||
| کلیدواژهها | ||
| Culling؛ Goat herds؛ Microbial disease؛ Viral disease | ||
| عنوان مقاله [English] | ||
| خصوصیات و الگوی حذف در بزها | ||
| چکیده [English] | ||
| به منظور شرح و تفسیر دلایل حذف بز در گلههای شیری تجاری این مطالعه در طول مدت 18 سال از سال 1996 تا سال 2013 در مزارع پرورش بز صنعتی در تربت جام به عنوان یکی از قطبهای این صنعت انجام شد. در کل دادههای 3954 بز مورد استفاده قرار گرفت. در نهایت 499 بز معادل 12% از تعداد کل کشتار شدند. حذف اجباری بزها معمولا به دلیل کمبود مواد غذایی اختلالات متابولیکی (3.8%)، بیماریهای ویروسی (3.3%)، بیماریهای باکتریایی (2.8%)، و سایر اختلالات (2.1%) صورت پذیرفته است. بیماری آبله گوسفندی به عنوان عمدهترین و مهمترین دلایل حذف به دلیل بیماریهای ویروسی (64%) به حساب میآید. Tick Paralysis به عنوان مهمترین دلیل حاصل از بیماریهای انگلی نرخی معادل 88% از حذف بزها را به خود اختصاص داده است. از سوی دیگر enteroxemia یه عنوان عاملی که نرخی معادل 55% از حذفهای حاصل از بیماریهای باکتریایی را شامل میشود به عنوان بارزترین دلیل حذف حاصل از بیماریهای میکروبی محسوب میشود. نتایج مشخص نمود که حذف به دلیل کمبود مواد غذایی به عنوان یکی از مهمترین دلایل حذف بزها میباشد که نیازمند توجه و برنامهریزی به منظور کاهش این نرخ میباشد. | ||
| کلیدواژهها [English] | ||
| کشتار, گله بز, بیماری میکروبی, بیماری ویروسی | ||
| مراجع | ||
|
Allaire, F.R., Sterwerf, H.E., Ludwick, T.M., 1977. Variations in Removal Reasons and Culling Rates with Age for Dairy Females1. J Dairy Sci 60, 254-267.
Azizzadeh, M., 2011. Characterisation and pattern of culling in Holstein-Friesian dairy herds in Khorasan Razavi Province, Northeast of Iran. Vet ResForum 2, 254-258.
Beaudeau, F., Ducrocq, V., Fourichon, C., Seegers, H., 1995. Effect of disease on length of productive life of French Holstein dairy cows assessed by survival analysis. J Dairy Sci 78, 103-117.
Beaudeau, F., Henken, A., Fourichon, C., Frankena, K., Seegers, H., 1993. Associations between health disorders and culling of dairy cows: a review. Livest Prod Sci 35, 213-236.
Cobo-Abreu, R., Martin, S.W., Stone, J.B., Willoughby, R.A., 1979. The rates and patterns of survivorship and disease in a university dairy herd. Can Vet J 20, 177-183.
Detilleux, J.C., Grohn, Y.T., Eicker, S.W., Quaas, R.L., 1997. Effects of left displaced abomasum on test day milk yields of Holstein cows. J Dairy Sci 80, 121-126.
Erb, H.N., Smith, R.D., Oltenacu, P.A., Guard, C.L., Hillman, R.B., Powers, P.A., et al., 1985. Path model of reproductive disorders and performance, milk fever, mastitis, milk yield, and culling in Holstein cows. J Dairy Sci 68, 3337-3349.
Grohn, Y.T., Ducrocq, V., Hertl, J.A., 1997. Modeling the effect of a disease on culling: an illustration of the use of time-dependent covariates for survival analysis. J Dairy Sci 80, 1755-1766.
Grohn, Y.T., Eicker, S.W., Ducrocq, V., Hertl, J.A., 1998. Effect of diseases on the culling of Holstein dairy cows in New York State. J Dairy Sci 81, 966-978.
Gröhn, Y.T., Rajala-Schultz, P.J., 2000. Epidemiology of reproductive performance in dairy cows. Anim Reprod Sci 60-61, 605-614.
Gröhn, Y.T., Rajala-Schultz, P.J., Allore, H.G., DeLorenzo, M.A., Hertl, J.A., Galligan, D.T., 2003. Optimizing replacement of dairy cows: modeling the effects of diseases. Prev Vet Med 61, 27-43.
Mandal, A., Prasad, H., Kumar, A., Roy, R., Sharma, N., 2007. Factors associated with lamb mortalities in Muzaffarnagari sheep. Small Ruminant Res 71, 273-279.
Martin, S.W., Aziz, S.A., Sandals, W.C.D., Curtis, R.A., 1982. Theassociationbetween clinical disease, production and culling of holsten-friesian cows. Can J Anim Sci 62, 633-640.
McCullough, D.A., DeLorenzo, M.A., 1996. Effects of Price and Management Level on Optimal Replacement and Insemination Decisions1. J Dairy Sci 79, 242-253.
Milian-Suazo, F., Erb, H.N., Smith, R.D., 1988. Descriptive epidemiology of culling in dairy cows from 34 herds in New York State. Prev Vet Med 6, 243-251.
Rajala-Schultz, P.J., Gröhn, Y.T., 1999a. Culling of dairy cows. Part I. Effects of diseases on culling in Finnish Ayrshire cows. Pre Vet Med 41, 195-208.
Rajala-Schultz, P.J., Gröhn, Y.T., 1999b. Culling of dairy cows. Part II. Effects of diseases and reproductive performance on culling in Finnish Ayrshire cows. Prev Vet Med 41, 279-294.
Rajala, P.J., Grohn, Y.T., 1998. Effects of dystocia, retained placenta, and metritis on milk yield in diary cows. J Dairy Sci 81, 3172-3181.
Regassa, A., Moje, N., Megersa, B., Beyene, D., Sheferaw, D., Debela, E., et al., 2013. Major causes of organs and carcass condemnation in small ruminants slaughtered at Luna Export Abattoir, Oromia Regional State, Ethiopia. Prev VetMed 110, 139-148.
Safari, E., Fogarty, N.M., Gilmour, A.R., 2005. A review of genetic parameter estimates for wool, growth, meat and reproduction traits in sheep. Livest Prod Sci 92, 271-289.
Southey, B.R., Rodriguez-Zas, S.L., Leymaster, K.A., 2001. Survival analysis of lamb mortality in a terminal sire composite population. J Anim Sci 79, 2298-2306.
Stevenson, M., Lean, I., 1998. Descriptive epidemiological study on culling and deaths in eight dairy herds. Aust Vet J 76, 482-488.
Van Arendonk, J.A.M., 1988. Management Guides for Insemination and Replacement Decisions. J Dairy Sci 71, 1050-1057.
Van Arendonk, J.A.M., Dijkhuizen, A.A., 1985. Studies on the replacement policies in dairy cattle. III. Influence of variation in reproduction and production. Livest Prod Sci 13, 333-349. | ||
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