Effects of Sexed and Conventional Semen Use and Calf Sex on Milk Yield Parameters, Body Weight and Milk Electrical Conductivity in Holstein Cows

Abstract

This study was designed to determine the effects of semen type and calf gender on milk yield parameters, milk electrical conductivity and milk flow values and postpartum maternal body weight. A total of 265 Holstein cows in the first lactation were used in the study. The effect of sperm type on maternal body weight levels after calving and milk electrical conductivity values was significant (P0.05). Heifers inseminated with sexed semen had higher 100-days milk yield, milk peak yield and postpartum maternal body weight in the first lactation. Milk peak duration was higher in heifers inseminated with conventional semen (P0.05). In conclusion, heifers inseminated with sexed semen had higher maternal body weights, 100-days milk yield, milk peak yields and milk electrical conductivity levels in the first lactation than inseminated with conventional semen

Keywords

• Body weight
• milk electrical conductivity
• milk yield
• sexed sperma

Holstein İneklerde Cinsiyeti Belirlenmiş ve Konvansiyonel Semen Kullanımı ve Buzağı Cinsiyetinin Süt Verim Parametreleri, Canlı Ağırlık ve Süt Elektriksel İletkenliği Üzerine Etkileri

Öz

Bu çalışma, sperma tipinin ve buzağı cinsiyetinin süt verimi parametreleri, süt iletkenlik ve akışkanlık değerleri ve doğum sonrası maternal canlı ağırlıkların üzerine etkisini belirlemek için tasarlandı. Çalışmada, birinci laktasyonda olan toplam 265 Holştayn inek kullanıldı. Sperma tipinin doğum sonrası maternal canlı ağırlık ve süt iletkenlik değerleri üzerine etkisi önemli bulundu (P0.05). Cinsiyeti belirlenmiş sperma ile tohumlanan düvelerin ilk laktasyondaki 100 günlük süt verimleri ve süt pik verimleri daha yüksekti. Pik süresi ise, konvansiyonel semen ile tohumlanan düvelerin ilk laktasyonunda daha yüksek bulundu (P0.05). Sonuç olarak, cinsiyeti belirlenmiş sperma ile tohumlanan düvelerin ilk laktasyondaki maternal canlı ağırlıkları, 100 gün süt verimleri, süt pik verimleri ve süt elektriksel iletkenlik değerleri konvansiyonel sperma ile tohumlananlardan daha yüksek olduğu tespit edildi.

Anahtar Kelimeler

• Canlı ağırlık
• cinsiyeti belirlenmiş sperma
• süt elektriksel iletkenlik
• süt verimi

Kaynakça

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