Postpartum Nonsiklik Sütçü İneklerde Progesteron-Östradiol, Progesteron-GnRH-Prostaglandin F2α veya Östradiol ile Tedaviden Sonra Folliküler Değişiklikler ve Reprodüktif Performans

Yıl 2018, , 419 - 429, 15.12.2018

Hasan Basri Tek , Yavuz Nak , Ahmet Gümen Kamil Seyrek-intaş Abdülkadir Keskin

https://doi.org/10.30607/kvj.445404

Öz

Çalışmanın
amacı; postpartum nonsiklik ineklerde progesteron, GnRH, PGF_2α ve
östradiol benzoat hormonlarını içeren tedavi yöntemlerinin folliküler gelişim
ve progesteron konsantrasyonları üzerindeki etkilerini araştırmaktır. Çalışma
materyalini tedavi yöntemlerine göre rastgele 3 gruba ayrılan toplam 20 adet
nonsiklik Holstein inek oluşturdu (n=20). Grup I’ de (n=7) bulunan ineklere 12
gün süre ile PRID (östradiol kapsüllü) yerleştirildi. Grup II’ de (n=6) 0.
günde 10 mcg GnRH ve PRID (kapsülsüz) ve PRID’ lerin uzaklaştırıldıkları 7.
günde 25 mg PGF_2α tedavileri uygulandı. Grup III’de (n=7) ise grup
II’den farklı olarak kapsülsüz PRID’ lerin uzaklaştırılmalarını takiben 10.
saatte östradiol benzoat uygulandı. Sıfırıncı günde GnRH uygulamalarına cevap
olarak grup II (6/6) ve III’ de (5/7) bulunan ineklerde sırasıyla ortalama
2,5±0,2. ve 2,2±0,2. günlerde; 12,0±0,7 mm ve 11,0±0,9 mm çaplı folliküllerde
ovulasyonlar tespit edildi. PRID’ lerin vaginadan
uzaklaştırılmalarını takiben grup I’ de bulunan ineklerde (7/7) persistent
follikül oluşumu gözlenirken, Grup II (4/6) ve III’ de (6/7) yer alan ineklerde 4,8±0,6. ve 3,5±0,3. günde
ovulasyonlar tespit edildi. Sonuçta; Grup I’de uygulanan tedavi, siklik
aktivitenin başlatılmasında başarısız kaldı ve persistent follikül oluşumuna
neden oldu. Grup II ve III’ de uygulanan tedaviler siklik aktivitelerin
başlatılmasında benzer başarıyı gösterirken, östradiol benzoat tedavisine bağlı
olarak Grup III’ de ovulasyonlar daha erken gözlendi (P<0,05). 

Anahtar Kelimeler

Nonsiklik inek, PRID, folliküler dalga, persistent follikül

Follicular Changes and Reproductive Performance in Postpartum Noncyclic Dairy Cows After Treatment with Progesterone and Estradiol or with Progesterone, GnRH, Prostaglandin F2α and Estradiol

Öz

The
aim of this study was to investigate the effects of treatment methods including
GnRH, PGF_2α and estradiol hormones on follicular development and
progesterone concentrations in postpartum noncyclic cows. The study material
consisted of 20 noncyclic, Holstein breed cows (n= 20), which were randomly
allocated to three groups according to the treatment protocols. In Group I
(n=7), PRID with estradiol capsule was inserted for 12 d. Cows in Group II
(n=6) were treated with 10 mcg of GnRH and PRID without estradiol capsule on
Day 0 and 25 mg of PGF_2α on Day 7 when PRID was removed. Cows in
Group III (n=7) were treated same as Group II until PRID removal, then they
were received estradiol benzoate 10 h after PRID removal. In response to GnRH
treatment on Day 0, all six cows in Group II and 5 of 7 cows in Group III
ovulated 2,5±0,2 d and 2,2±0,2 d after GnRH treatment with 12,0±0,7 mm and
11,0±0,9 mm follicle diameter. All cows (7/7) in Group I had a persistent
follicles on the ovary following 12 d PRID treatment. Ovulations after PRID
removal were detected on Day 4,8±0,6 and 3,5±0,3 d
in Group II(4/6) and III (6/7), respectively.
In conclusion, PRID (with capsule) treatment for 12 d was not successful to
resume cyclicity and cause persistent follicle in noncyclic cows. However,
resumption of cyclicity was similarly high in Group II and III in response to
treatmens. In addition, cows in Group III ovulated earlier than Group II due to
estadiol benzoate treatment (P<0.05).

Anahtar Kelimeler

Noncyclic cows, PRID, follicular wave, persistent follicle

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