AI Summary & Key Takeaways
AI InsightIn conclusion, it was suggested that P-carotene+Vitamin E administration combined with Ovsynch and Cosynch synchronisation programmes may relatively increase the pregnancy rates following artificial insemination and hence, the supplementary administration of P-carotene+Vitamin E to the synchronisation protocol would be useful, at least to some extent, for achieving a higher fertility during the postpartum period in cows.
📌 3 Key Takeaways
Abstract
Summary The aim of the present study was to increase the pregnancy rates following artificial insemination of cows by using Ovsynch and Cosynch synchronisation programmes combined with P-carotene+Vitamin E (Dalmavital®) injection. A total of 225 cows in varying ages and breeds were divided into 4 trial groups as follows: "P-carotene+Vitamin+Ovsynch" (Group I, n=81), "P-carotene+Vitamin+Cosynch" (Group II, n=45), "Ovsynch" (Group III, n=60) and "Cosynch" (Group IV, n=39). For all the cows, the total premature oestrus rate (being the highest, 18.5% in Group I; p<0.001) was 9.3% (21/225) and these 21 cows were then excluded from the calculations of p-carotene level and pregnancy rate. Considering the 204 cows remained, the resultant pregnancy rates (25.8% and 34.1%) in Groups I (n=66) and II (n=44) were relatively (p>0.05) higher than those rates (17.5% and 21.6%) in Groups III (n=57) and IV (n=37), respectively. By contrast, regardless of the presence of pregnancy and before the PGF2oc injection in particular, P-carotene levels (ranging from 43.7±34.8 to 64.9± 47.2 u.g/dl) in Groups I and II were significantly (p<0.001) higher than those rates (ranging from 18.1 ±1.3 to 19.9±5.9 (ig/dl) in Groups III and IV, respectively. In conclusion, it was suggested that P-carotene+Vitamin E administration combined with Ovsynch and Cosynch synchronisation programmes may relatively increase the pregnancy rates following artificial insemination and hence, the supplementary administration of P-carotene+Vitamin E to the synchronisation protocol would be useful, at least to some extent, for achieving a higher fertility during the postpartum period in cows.
Özet
Özet Sunulan çalışmanın amacı, ineklerde P-karoten+Vitamin E (Dalmavital®) uygulamasıyla kombine edilen Ovsynch ve Cosynch senkronizasyon programları yardımıyla suni tohumlama sonrası gebelik oranını artırmaktır. Değişik ırk ve yaşlardaki toplam 225 baş inek 4 deneme grubuna ayrıldı: "P-karoten+Vitamin E+Ovsynch" (Grup I, n=81), "P-karoten+ Vitamin E+Cosynch" (Grup II, n=45), "Ovsynch" (Grup III, n=60) ve "Cosynch" (Grup IV, n=39). Tüm ineklerde prematüre östrus oranı (Grup l'de en yüksek, %18.5; p 0.05) daha yüksekti. Buna karşın, gebelik durumlarına bakılmaksızın ve özellikle PGF2a enjeksiyonu öncesi, Grup I ve ll'deki plazma p-karoten düzeyleri (43.7±34.8 ile 64.9±47.2 jag/dl arası), Grup III ve IV'teki düzeylere (18.1 ±1.3 ile 19.9±5.9 ju.g/dl arası) göre önemli ölçüde (p<0.001) daha yüksekti. Sonuç olarak, ineklerde P-karoten+ Vitamin E uygulamasıyla kombine edilen Ovsynch ve Cosynch senkronizasyon programlarının suni tohumlama sonrası gebelik oranlarını nispeten artırdığı, dolayısıyla P-karoten+Vitamin E ile senkronizasyon protokolüne destek uygulamasının postpartum dönemde yüksek yavru verimi yönünden, sınırlı düzeyde de olsa, faydalı olabileceği kanısına varıldı.