Süt Sığırlarında Postpartum Anöstrüs

Postpartum anöstrüs süt sığırlarının doğum sonrasında kızgınlık döngüsünün görülmediği dönem olarak bilinir. Süt sığırlarında postpartum anöstürün uzaması üreme etkinliğini sınırlayan en temel etmenlerden biridir. Postpartum anöstrüs yetersiz beslenme, süt verimi ve çeşitli patolojik etmenler (kronik zayıf düşürücü hastalıklar veya uterus ve ovaryum hastalıkları) gibi pek çok faktörden kaynaklanmaktadır. Anöstrüsün engellenmesi uygun beslenme, tedavi yöntemleri (hormon muamelesi) ve yeterli sağlık tedbirlerinin alınmasıyla gerçekleştirilebilir. Anöstrüs’ün nedenini tam olarak anlayabilmek ve engelleyebilmek için, a) üremeyi etkileyen doğum öncesi hastalıkların b) ovulasyon ile ilgili genlerin c) metabolik sinyaller ile nöroendokrin döngü arasındaki önemli bağlantı fonksiyonu gören bazı proteinlerin (leptin), anöstrüs üzerine olan etkilerinin belirlenmesi gerekmektedir. Bu derlemede postpartum anöstrüs ile ilgili ovaryum aktiviteleri üzerinde durulmuştur. 
Anahtar Kelimeler:

Anöstrüs, fertilite, postpartum

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