Üreme Sezonunda Östrüs Senkronizasyonu Uygulanan Laktasyondaki Kilis Keçilerinde Vitamin A, D3, E ve Selenyum Takviyesinin Üreme Performansı Üzerine Etkileri

Öz

Bu çalışmada, üreme sezonu boyunca Kilis keçilerinde senkronizasyon protokolüne ek olarak A, D3, E vitaminleri ve selenyum (Se) uygulamasının fertilite parametreleri üzerindeki etkileri araştırılmıştır. Toplam 70 Kilis keçisi rastgele vit-min (n = 35) ve kontrol (n = 35) gruplarına ayrılmıştır. Tüm keçilere 9 gün süreyle 20 mg flugeston asetat içeren vajinal sünger uygulanmıştır. Sünger yerleştirildiği gün, vit-min grubuna intramüsküler olarak 200.000 IU A vitamini, 30.000 IU D3 vitamini, 20 mg E vitamini, 1 mg sodyum selenit ve ilave 60 mg E vitamini uygulanırken, Kontrol grubuna herhangi bir takviye yapılmamıştır. Süngerlerin çıkarıldığı gün, her iki gruba 500 IU eCG ve 250 µg kloprostenol uygulanmış, vit-min grubuna ayrıca A, D3 ve E vitaminlerini içeren ikinci bir enjeksiyon yapılmıştır. Östrüs takibi, süngerlerin çıkarılmasından 24-72 saat sonra tekelerin günde iki kez sürüye katılmasıyla gerçekleştirilmiştir. Gebelik tanısı, aşımdan sonraki 50. günde transabdominal ultrasonografi ile yapılmış, yavru sayısı doğumda belirlenmiştir. Östrüs oranları her iki grupta da %100 olarak tespit edilmiştir (P>0.05). Gebelik oranı vit-min grubunda (%68.57), kontrol grubuna (%48.57) kıyasla sayısal olarak daha yüksek olsa da istatistiksel fark bulunmamıştır (P>0.05). Benzer şekilde, yavru verimi vit-min grubunda daha yüksek olmasına rağmen anlamlı bulunmamıştır (P>0.05). Buna karşın fekondite oranı vit-min grubunda (%154.28), kontrol grubuna (%91.42) göre anlamlı derecede yüksek bulunmuştur (P<0.05). Çoğul gebelik oranları açısından gruplar arasında fark saptanmamıştır (P>0.05). Sonuç olarak, senkronizasyon protokolüne vitamin-mineral takviyesinin eklenmesi, laktasyondaki Kilis keçilerinde fekonditeyi artırarak üreme performansını iyileştirmiştir. Bu yaklaşımın mera bazlı sistemlerde uygulanabilir ve ekonomik açıdan avantajlı olabileceği düşünülmektedir. Ancak, etkisini daha net bir şekilde ortaya koymak için daha büyük örneklem büyüklüklerine sahip kapsamlı çalışmalara ihtiyaç vardır.

Anahtar Kelimeler

• Keçi
• vitamin
• mineral
• fertilte parametreleri
• üreme mevsimi

Effects of Vitamin A, D3, E, and Selenium Supplementation on Reproductive Performance in Lactating Kilis Goats Applied with Estrus Synchronization During the Breeding Season

Öz

This study investigated the effects of supplementation with vitamins A, D3, E, and selenium (Se) on fertility parameters in Kilis goats during the breeding season, in addition to a synchronization protocol. A total of 70 Kilis goats were randomly divided into vit-min (n = 35) and control (n = 35) groups. All goats received a vaginal sponge containing 20 mg of flugestone acetate for 9 days. On the day the sponge was inserted, the vit-min group received intramuscular injections of 200,000 IU of vitamin A, 30,000 IU of vitamin D3, 20 mg of vitamin E, 1 mg of sodium selenate, and an additional 60 mg of vitamin E, while the control group received no supplements. On the day the sponges were removed, both groups received 500 IU of eCG and 250 µg of cloprostenol, and the vit-min group also received a second injection containing vitamins A, D3, and E. Estrus monitoring was performed by introducing bucks to the flock twice daily, 24-72 hours after the removal of sponges. Pregnancy diagnosis was made by transabdominal ultrasonography on the 50th day after mating, and litter size was determined at kidding. Estrus rates were found to be 100% in both groups (P>0.05). Although the pregnancy rate was numerically higher in the vit-min group (68.57%) compared to the control group (48.57%), there was no statistically significant difference (P>0.05). Similarly, although litter size was higher in the vit-min group, it was not statistically significant (P>0.05). In contrast, the fecundity rate was significantly higher in the vit-min group (154.28%) compared to the control group (91.42%) (P<0.05). No difference was found between the groups in terms of multiple pregnancy rates (P>0.05). In conclusion, adding vitamin-mineral supplementation to the synchronization protocol improved reproductive performance in lactating Kilis goats by increasing fecundity. This approach is considered applicable and potentially economically advantageous in pasture-based systems. However, comprehensive studies with larger sample sizes are needed to more clearly demonstrate its effectiveness.

Anahtar Kelimeler

• Goat
• vitamin
• mineral
• fertility parameters
• breeding season

Kaynakça

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