Süt İneklerinde Görülen Subklinik ve Kinik Ketozisin Bazı Hematolojik Parametreler, Mastitis, Metritis İnsidensleri ile Sürü Dışı Kalma Oranına Etkileri

Abstract

The study was conducted on 197 milk dairy cattle randomly selected from 950 breeding dairy cattle. These animals were monitored immediately after delivery and blood count and serum BHBA analyzes were performed weekly for the first 8 weeks. According to the results of the BHBA obtained, all animals in the study were divided into three groups as follows; a) Control Group “C”; serum BHBA levels below 1.2 mmol/l during the study b) Subclinical Ketosis Group “SK”; serum BHBA levels between 1.2 and 2.9 mmol/l c) Clinical Ketosis Group “CK”; serum BHBA levels were above 2.9 mmol/l. All performance parameters such as milk yield and reproductive efficacy obtained from the herd management program (Dairy Plan, Gea / Germany). TLS, LS, NS, MS levels were found to be higher in the SK and CK compared to the C. Especially, a strong positive interaction between TLS and blood BHBA level was determined (P <0,000). In addition, the incidence of mastitis, metritis and coexistence of these two infections was significantly higher in the SK and CK than in the C (p <0,013). Furthermore, the rate of culling was significantly higher in the SK and CK than C and it was also observed that this ratio increased in parallel with the severity of the ketosis (p <0.008). These findings show that hematologic parameters change significantly in animals that have undergone clinical or subclinical ketosis and that susceptibility to significant infectious diseases during the periparturient period such as mastitis and metritis increases and as a result, the rate of culling increases.