Zvonko ZLATANOVIĆ, Slavča HRISTOV, Branislav STANKOVIĆ, Marko CINCOVIĆ, Dimitar NAKOV, Jovan BOJKOVSKI

Simental Süt İneklerinde Tırnak Bozukluklarının Süt Üretimine Etkisi

Açık sistem yetiştiriciliğinin yapıldığı 226 Simental inek üzerinde bir yıl boyunca tırnak bozukluklarının süt üretimi üzerine etkisine yönelik bir çalışma gerçekleştirildi. Birinci deneme grubu, laktasyonun ilk yüz günlük döneminde olan ve tırnak değişiklikleri gösteren 42 inek; ikinci grup, laktasyonun 101 ile 200. günleri arasında olan ve tırnak değişiklikleri gösteren 37 inek ve üçüncü grup, laktasyonun 201 ile 305. günleri arasında olan ve tırnak değişiklikleri gösteren 34 inekten oluşuyordu. Kontrol grubunu hiçbir tırnak bozukluğu gözlenmeyen 113 inek oluşmaktaydı. Topallık yoğunluğu haftada bir değerlendirildi. Süt üretim verileri, tırnakların tedavisinden önceki üç haftalık dönem, tedavini yapıldığı hafta ve tedaviden sonraki üç haftalık dönemlerde toplandı. Diğer iki gruba göre üçüncü grupta topallık gösteren inek sayısı çok daha fazlaydı ve bir ayağı etkilenmiş ineklere en fazla laktasyonun ilk yüz günlük döneminde rastlandı (P

Infl uence of Claw Disorders on Milk Production in Simmental Dairy Cows

A study on claw disorders" infl uence on milk production was performed during one year on 226 Simmental loose-reared cows. The first trial group included 42, the second 37, and the third 34 cows, with claw changes observed in the first hundred days of lactation, between days 101 and 200, between days 201 and 305, respectively. The control group included 113 cows with no observed changes. Lameness intensity was assessed once a week. Milk yield data were collected three weeks before, in the week of treatment of claws and three weeks afterwards. There were significantly more cows with lameness in the third group than in the other two groups, as well as the most cows with one aff ected limb in the first hundred days of the lactation (P

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