Malya Tarım İşletmesi’nde yetiştirilen Esmer irkı ineklerin süt verim özellikleri ve bunlar üzerine bazı çevre faktörlerinin etkileri

Bu çalışma, Malya Tarım İşletmesi’nde yetiştirilen Esmer ırkı ineklerin süt verim özellikleri ve bu verimlere bazı çevresel faktörlerin (buzağılama yılı, buzağılama mevsimi ve buzağılama yaşı) etkilerini incelemek amacıyla yapılmıştır. Laktasyon süresi, laktasyon süt verimi, 305 günlük süt verimi ve kuru döneme ait en küçük kareler ortalamaları sırasıyla 312.02±0.98 gün, 5811.28±26.31 kg, 5525.92±22.35 kg ve 76.82±0.63 gün olarak bulunmuştur. Laktasyon ve 305 günlük süt verimleri üzerine tüm çevresel faktörlerin etkisi istatistiksel olarak önemli bulunmuştur (P

Anahtar Kelimeler:

Amerikan Esmer Irkı, buzağılama, buzağılama mevsimi, sığır, inek, süt sığırı, süt ineği, süt işletmeleri, kuru dönem, çevresel faktörler, süt üretimi, süt verimi

Milk yield traits of Brown cows reared at Malya state farm and Effects of some environmental factors on these traits

This study was done to investigate some environmental factors (calving year, calving season and calving age) affecting milk yield traits and milk yield traits of Brown cows raised at the Malya state farm. The least square means of lactation duration, lactation milk yield, 305-day milk yield and dry period were estimated as 312.02±0.98 days, 5811.28±26.31kg, 5525.92±22.35 kg and 76.82±0.63 days, respectively. Effects of all environmental factors on lactation milk yield (actual milk yield) and 305-day milk yield were found statistically significant (P<0.001). Similarly, effects of calving season, calving year and calving age on lactation duration were found statistically significant (P<0.001-P<0.05). Effects of calving year, and calving age on dry period were statistically significant (P<0.001). According to result in this study, it can be said that Brown cattle are raised successfully at Malya state farm in region under steppe climate conditions of Turkish and yield levels of Brown cows were very good.

Keywords:

American Brown Swiss, calving, calving season, cattle, cows, dairy cattle, dairy cows, dairy farms, dry period, environmental factors, milk production, milk yield,

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