Effects of Somatic Cell Count and Various Environmental Factors on Milk Yield and Foremilk Constituents of Red-Holstein Cows

KOÇ, Atakan

Effects of Somatic Cell Count and Various Environmental Factors on Milk Yield and Foremilk Constituents of Red-Holstein Cows

Atakan KOÇ (Adnan Menderes Üniversitesi, Ziraat Fakültesi, Tarım Ekonomisi Bölümü, Aydın, Türkiye)

Tarım Bilimleri Dergisi

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Yıl: 2015 Cilt: 21 Sayı: 3 Sayfa Aralığı: 439 - 447 Metin Dili: Türkçe İndeks Tarihi: 29-07-2022

Effects of Somatic Cell Count and Various Environmental Factors on Milk Yield and Foremilk Constituents of Red-Holstein Cows

Öz:

Bu çalışmada, Akdeniz iklim koşullarının egemen olduğu Aydında yetiştirilen Kırmızı-Alaca sığırların süt verimi ve ön süt bileşenleri üzerine somatik hücre sayısı (SHS) ve bazı çevresel faktörlerin etkileri araştırılmıştır. 2009-2012yılları arasında yılda iki kez (kışın ve yazın) 129 baş inekten sabah ve akşam sağımlarında alınan toplam 891 ön süt örneğinde protein oranı (PO), laktoz oranı (LO) ve yağsız kuru madde oranı (YKMO) ile SHS belirlenmiştir. İstatistik analiz öncesinde SHS verileri 6 gruba (<100,000 hücre mL-1; 100,000-199,999 hücre mL-1; 200,000-299,999 hücre mL -1; 300,000-399,999 hücre mL-1; 400,000-750,000 hücre mL-1; ve >750,000 hücre mL-1) ayrılmıştır. Kış ve yaz mevsimleri için denetim zamanı süt verimi (DZSV), PO, LO, YKMO ve Log10SHS en küçük kareler ortalamaları sırasıyla 11.27±0.253 kg ve 10.59±0.226 kg (P<0.05), % 3.24±0.024 ve % 3.04±0.021 (P<0.01), % 4.44±0.028 ve % 4.48±0.025 (P>0.05), % 8.68±0.045 ve % 8.50±0.040 (P<0.01) ve 5.051±0.0508 (112,461 hücre mL-1) ve 4.914±0.0428 (82,035 hücre mL -1)dir (P<0.05). Birinci SHS grubu ile karşılaştırıldığında, DZSV, LO ve YKMO, beşinci SHS grubunda sırasıyla 1.1 kg (% 9.4), % 6.4 ve % 3.8, altıncı SHS grubunda ise sırasıyla 1.49 kg (% 12.7), % 11.3 ve % 6.3 azalmıştır (P<0.05). Sonuç olarak, SHS yükseldikçe LOnın belirgin bir şekilde düşmesi LOnın bir mastitis göstergesi olarak kullanılabileceğini göstermektedir. Ayrıca, DZSV, PO ve YKMOnda yaz mevsiminde görülen önemli düşüşler bu sürüde ve yöredeki diğer sürülerde sıcak yaz aylarında görülebilecek sıcaklık stresine karşı çeşitli önlemler almayı gerektirmektedir.

Anahtar Kelime:

Konular: Biyoloji Biyoteknoloji ve Uygulamalı Mikrobiyoloji

Kırmızı-Alaca Sığırların Süt Verimi ve Ön Süt Bileşenleri Üzerine Somatik Hücre Sayısı ve Bazı Çevresel Faktörlerin Etkileri

Öz:

In this study, the effects of somatic cell count (SCC) and various environmental factors on milk yield and foremilk constituents in Red-Holstein (RH) cows raised under Mediterranean climatic conditions in Aydın Province in Turkey were determined. A total of 891 foremilk samples collected from 129 cows during morning and evening milkings in winter and summer seasons between 2009 and 2012 were analysed for protein content (PC), lactose content (LC), non- fat dry matter content (NFDMC), and SCC. SCC data were split into 6 groups (<100,000 cells mL-1; 100,000-199,999 cells mL-1; 200,000-299,999 cells mL-1; 300,000-399,999 cells mL-1; 400,000-750,000 cells mL-1; and >750,000 cells mL-1) before statistical analysis. LS MEANS of sampling time milk yield (STMY), PC, LC, NFDMC, and Log10SCC for winter and summer seasons were 11.27±0.253 kg and 10.59±0.226 kg (P<0.05), 3.24±0.024% and 3.04±0.021% (P<0.01), 4.44±0.028% and 4.48±0.025% (P>0.05), 8.68±0.045% and 8.50±0.040% (P<0.01), and 5.051±0.0508 (112,461 cells mL-1) and 4.914±0.0428 (82,035 cells mL-1) (P<0.05), respectively. Compared to the first SCC group, STMY, LC, and NFDMC decreased to 1.1 kg (9.4%), 6.4%, and 3.8% in the fifth group and 1.49 kg (12.7%), 11.3%, and 6.3% in the sixth group, respectively (P<0.05). In conclusion, LC could be used as a mastitis marker due to a distinct decrease in LC as SCC increases. Additionally, due to significant reductions in the STMY, PC, and NFDMC in the summer season, some precautions are required to prevent possible heat stress in this herd and the herds managed in the regions with hot summer months.

Anahtar Kelime:

Konular: Biyoloji Biyoteknoloji ve Uygulamalı Mikrobiyoloji

Belge Türü: Makale Makale Türü: Araştırma Makalesi Erişim Türü: Erişime Açık

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APA	KOÇ A (2015). Effects of Somatic Cell Count and Various Environmental Factors on Milk Yield and Foremilk Constituents of Red-Holstein Cows. , 439 - 447.
Chicago	KOÇ Atakan Effects of Somatic Cell Count and Various Environmental Factors on Milk Yield and Foremilk Constituents of Red-Holstein Cows. (2015): 439 - 447.
MLA	KOÇ Atakan Effects of Somatic Cell Count and Various Environmental Factors on Milk Yield and Foremilk Constituents of Red-Holstein Cows. , 2015, ss.439 - 447.
AMA	KOÇ A Effects of Somatic Cell Count and Various Environmental Factors on Milk Yield and Foremilk Constituents of Red-Holstein Cows. . 2015; 439 - 447.
Vancouver	KOÇ A Effects of Somatic Cell Count and Various Environmental Factors on Milk Yield and Foremilk Constituents of Red-Holstein Cows. . 2015; 439 - 447.
IEEE	KOÇ A "Effects of Somatic Cell Count and Various Environmental Factors on Milk Yield and Foremilk Constituents of Red-Holstein Cows." , ss.439 - 447, 2015.
ISNAD	KOÇ, Atakan. "Effects of Somatic Cell Count and Various Environmental Factors on Milk Yield and Foremilk Constituents of Red-Holstein Cows". (2015), 439-447.

APA	KOÇ A (2015). Effects of Somatic Cell Count and Various Environmental Factors on Milk Yield and Foremilk Constituents of Red-Holstein Cows. Tarım Bilimleri Dergisi, 21(3), 439 - 447.
Chicago	KOÇ Atakan Effects of Somatic Cell Count and Various Environmental Factors on Milk Yield and Foremilk Constituents of Red-Holstein Cows. Tarım Bilimleri Dergisi 21, no.3 (2015): 439 - 447.
MLA	KOÇ Atakan Effects of Somatic Cell Count and Various Environmental Factors on Milk Yield and Foremilk Constituents of Red-Holstein Cows. Tarım Bilimleri Dergisi, vol.21, no.3, 2015, ss.439 - 447.
AMA	KOÇ A Effects of Somatic Cell Count and Various Environmental Factors on Milk Yield and Foremilk Constituents of Red-Holstein Cows. Tarım Bilimleri Dergisi. 2015; 21(3): 439 - 447.
Vancouver	KOÇ A Effects of Somatic Cell Count and Various Environmental Factors on Milk Yield and Foremilk Constituents of Red-Holstein Cows. Tarım Bilimleri Dergisi. 2015; 21(3): 439 - 447.
IEEE	KOÇ A "Effects of Somatic Cell Count and Various Environmental Factors on Milk Yield and Foremilk Constituents of Red-Holstein Cows." Tarım Bilimleri Dergisi, 21, ss.439 - 447, 2015.
ISNAD	KOÇ, Atakan. "Effects of Somatic Cell Count and Various Environmental Factors on Milk Yield and Foremilk Constituents of Red-Holstein Cows". Tarım Bilimleri Dergisi 21/3 (2015), 439-447.