van vet j Van Veterinary Journal 2149-3359 2149-8644 Van Yuzuncu Yıl University 10.36483/vanvetj.1353378 Veterinary Obstetrics and Gynecology Veteriner Doğum ve Jinekoloji Chemical Composition and Physical Properties of Milk in Norduz Sheep Norduz Koyunlarında Sütün Kimyasal Yapısı ve Fiziksel Özellikleri https://orcid.org/0000-0002-7962-6959 Koca Davut VAN YÜZÜNCÜ YIL ÜNİVERSİTESİ https://orcid.org/0000-0001-6863-0939 Turgut Ali Osman SIIRT UNIVERSITY https://orcid.org/0000-0001-6073-4215 Çetin Nebi VAN YUZUNCU YIL UNIVERSITY https://orcid.org/0000-0003-0416-7476 Üner Sefa SIIRT UNIVERSITY https://orcid.org/0000-0002-3335-7247 Gülendağ Erman SIIRT UNIVERSITY https://orcid.org/0009-0000-7462-0462 Karagülle Bahtiyar VAN YUZUNCU YIL UNIVERSITY 11 27 2023 34 3 271 274 08 31 2023 10 24 2023 Copyright © 1990, Van Veterinary Journal 1990 Van Veterinary Journal

The objective of this study was to uncover the milk composition traits of Norduz sheep, which are bred in the Gürpınar district of the Van province, during the mid-term lactation period. The chosen ewes exhibited no signs of clinical or subclinical mastitis. A total of 104 sheep milk samples were meticulously collected to undergo comprehensive milk composition analysis. The chemical and physical attributes of Norduz sheep milk were methodically determined utilizing a milk autoanalyzer. The mean values for various milk constituents were as follows: milk fat (%), 2.48±0.11; solids-not-fat (SNF) (%), 10.76±0.08; milk protein (%), 5.09±0.04; lactose (%), 4.79±0.04; pH, 6.93±0.02; conductivity (mS/cm), 4.41±0.04; freezing point (°C), -0.602±0.80; salt (%), 0.8035±0.66; and density (kg/m3), 1039.73±0.39. Noteworthy negative and statistically significant correlations were observed between milk fat and protein (r=-0.36, p

Bu çalışmada, Van ili Gürpınar ilçesinde yetiştirilen Norduz koyunlarının orta laktasyon döneminde süt kompozisyon özelliklerinin ortaya konulması amaçlanmıştır. Koyunlar klinik ve subklinik mastitis yönünden değerlendirilmiş ve örnekler yalnızca sağlıklı koyunlardan toplanmıştır. Bu amaçla toplam 104 koyun sütü örneği toplandı. Norduz koyun sütünün kimyasal ve fiziksel özellikleri, süt otoanalizörü kullanılarak belirlenmiştir. Çalışmada Norduz sütünde süt yağı (%), 2.48±0.11; yağsız kuru madde (SNF) (%), 10.76±0,08; süt proteini (%), 5.09±0.04; laktoz (%), 4.79±0.04; pH, 6.93±0.02; iletkenlik (mS/cm), 4.41±0.04; donma noktası (°C),-0.602±0.80; tuz (%), 0.8035±0.66; ve yoğunluk (kg/m3), 1039.73±0.39 olarak belirlenmiştir. Süt yağı ile protein (r=-0.36, p

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