| تعداد نشریات | 24 |
| تعداد شمارهها | 863 |
| تعداد مقالات | 7,715 |
| تعداد مشاهده مقاله | 13,771,903 |
| تعداد دریافت فایل اصل مقاله | 11,818,706 |
Reasons for culling of Holstein dairy cows in Neishaboor area in northeastern Iran | ||
| Iranian Journal of Veterinary Research | ||
| مقاله 12، دوره 10، شماره 3 - شماره پیاپی 28، 2009، صفحه 278-282 اصل مقاله (108.9 K) | ||
| نوع مقاله: Short paper | ||
| شناسه دیجیتال (DOI): 10.22099/ijvr.2009.1709 | ||
| نویسندگان | ||
| G. R. Mohammadi* 1؛ A. Sedighi2 | ||
| 1Department of Clinical Sciences, Faculty of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, Iran | ||
| 2Graduated from Faculty of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, Iran | ||
| چکیده | ||
| This study was designed to determine the culling rates of 23 Holstein dairy herds (with an average size of180 cows per herd) in Neyshabur area in northeastern Iran over a period of three years from 2001 to 2003.The average annual culling rate was 13.1%, (98.5% involuntary and 1.5% voluntary). Of the total disposals(1612 cows), 53.48% were culled by the end of five years of age. Poor fertility was the most important reason for culling (34.9% of disposals), followed by digestive disorders (12.6%), alimentary problems (10.85%),mastitis (9.6%) and lameness (8.3%). More detailed epidemiological studies are needed to plan and implement healthcare programs. These programs targeted toward diseases that lead to culling would be prerequisite for a profitable farming. | ||
| کلیدواژهها | ||
| Culling؛ Holstein؛ Dairy cow؛ Iran | ||
|
آمار تعداد مشاهده مقاله: 1,878 تعداد دریافت فایل اصل مقاله: 2,716 |
||