دراسة لحالات العرج (Lameness) وأثره على إنتاج الحليب في أبقار الفريزيان المستوردة لمشروع غوط السلطان

S.A Amaizik,

doi:10.54172/mjsc.v16i1.866

Authors

S.A Amaizik, Anim. Prod. Dept., Agric. Fac., Omar Al-Mukh. Univ. Beida-Libya

DOI:

https://doi.org/10.54172/mjsc.v16i1.866

Keywords:

lameness cases, milk yield, lactating Friesian cows, Ghot Al-Sultan - LIBYA

Abstract

A sixty five lactating cows records were studied from the Ghot Al-Sultan dairy farm. Cows records were chosen according to different lactation numbers which from second to eight lactations and also for different lactation weeks which from 1-28 weeks. Each cow offered daily 1 kg concentrates for each 2 kg milk produced and 10 kg roughages.

Lameness cases were assessed weekly while cows walking along a firm walkway to the milking parlour. The incidence of lameness during the study period was 21 cases with a percent of 37% of the total number of cows (56).

The higher incidence of lameness was in the third, fourth and fifth lactations with 15 cases at a percent of 71% of cases number (21) and about 27% of total cows in the study (56). Average daily milk yield of lame cows was decreased by 3.1 kg compared to health cows, with total loss in milk yield estimated about 12760 kg with a percent of about 4.7% of total milk yield of all cows. Higher loss in milk yield was between 10 to 25 weeks of lactation with a daily average loss of about 4.1 kg with lame cows.

Economical loss for medical treatment and milk yield due to lameness for each case was more than 400 Libyan dinars.

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References

محمد خير وآخرون ، (1996) . مقارنة بين أداء الأبقار المستوردة وعجلاتها المولودة محليا . 1 . الإنتاج الكلى وطول فترة الإدرار . مجلة المختار للعلوم . منشورات DOI: https://doi.org/10.54172/mjsc.v3i1.484

جامعة عمر المختار . العدد الثالث .

ص : 9-25 .

Baggott, D. G., and Russell, A. M. (1981). Lameness in cattle. British Veterinary Journal, 137: 113-132. DOI: https://doi.org/10.1016/S0007-1935(17)31799-2

Borsberry, S., Logue, D., Laven, R., Watson, C. L., Ossent, P., and Livesey, C. (1999). Report of lameness workshop (Harper Adams) : lameness in the dairy cow. Cattle Practice, 7: 3, 307-310.

Boulon, J. B., Lescourret, F., and Fonty, A. (1996). Effect of foot lesions on milk production by dairy cows. Journal of Dairy Science, 79: 1, 44-49. DOI: https://doi.org/10.3168/jds.S0022-0302(96)76332-4

Endres, M. (2006). Research study shows ways to help reduce lameness in dairy cows. Extension service, University of Minnesota, USA.

Gyorkos, I., Kovacs, K., Mezes, M., Bader, E., and Nyakas, I. (1999). Influence of digital dermatitis on milk production in dairy cows. Allattenyesztes es Takarmanyozas, 48: 5, 483-489.

Kossaibati, M. A., and Esslemont, R. J. (1997). The costs of production diseases in dairy herds in England. Veterinary Journal, 154: 1, 41-51. DOI: https://doi.org/10.1016/S1090-0233(05)80007-3

Leonard, F. C., O’Connell, J., and O’Farell, K. (1994). Effect of different housing conditions on behaviour and foot lesions in Friesian heifers. The Veterinary Record, 134: 19, 490-494. DOI: https://doi.org/10.1136/vr.134.19.490

Rajala-Schultz, O. J., Grohn, Y. T., and McCulloch, C. E. (1999). Effects of milk fever, ketosis and lameness on milk yield in dairy cows. Journal of Dairy Science, 82: 2, 288-294. DOI: https://doi.org/10.3168/jds.S0022-0302(99)75235-5

Wells, S. J., Trent, A. M., Marsh, W. E., and Robinson, R. A. (1993). Diagnosis of clinical lameness. Journal of the American veterinary Medical Association, 202, 78.

Whitaker, D. A., Kelly, J. M., and Smith, E. J. (1983). Incidence of lameness in dairy cows. The Veterinary Record, 113: 60-62. DOI: https://doi.org/10.1136/vr.113.3.60

Wilkinson, M. (1995). Higher dry matter silage linked to better animal health. Dairy Farmer, 42(6): 32.