Impact of Human Chorionic Gonadotropin and Prostaglandin F2α Treatment on Progesterone Concentration, Oestrus and Pregnancy Rate in Friesian Cows | ||
| Egyptian Journal of Veterinary Sciences | ||
| Articles in Press, Corrected Proof, Available Online from 20 November 2024 PDF (831.81 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejvs.2024.320010.2376 | ||
| Authors | ||
| Mohamed Abuelhamd* 1; Soliman Hassona Soliman2; Wael A. El-Hamady3; Ali Elseid Ghodaia4; Osama El-Kot5; ibrahim m. abdelrazek6 | ||
| 1Animal Production Research Institute, Agricultural Research Center, Sakha | ||
| 2Animal Production Research Institute, Agricultural Research Center, Giza, Egypt | ||
| 3Animal Production Research Institute, Agricultural Research Center, Ministry of Agriculture, Egypt. | ||
| 4Animal Production Research Institute (APRI), Agricultural Research Center (ARC), Ministry of Agriculture, Egypt | ||
| 5Faculty of Science, Kafrelsheikh University, Kafr El-Sheikh 33516, Egypt. | ||
| 6department of animal production, fac. of agric., kafrelsheikh univ. | ||
| Abstract | ||
| The aim of the research was for evaluation human chorionic gonadotropin (hCG) hormone to improve fertility on Friesian cows. A total of 39 cows postpartum ages ranged between 46–96 months, weighing 440 – 560 kg are used. Cows were divided into three groups (13 cows in each). The first group was injected hCG at 0 day of oestrous, followed by 5 days with 3 ml PGF2α6, followed 1 days 3 ml PGF2α followed by 2 day injected hCG and timed artificial insemination (TAI). The second group (G2) was injected hCG at 0 day, followed by 5days with 3 ml PGF2α, followed 1 days 3 ml PGF2α followed by 2 day hCG, followed by 16-20h later with TAI. The thread group (G3) was injected hCG at 0 day, followed by 5 days PGF2α, followed 1 days 3 ml PGF2α followed by 2 day hCG followed by 16-20h later with TAI, followed by 5 days injected hCG. The pregnancy rate was much greater in G3 (76.92%) and G2 (69.23%) than in G1 (53.85%). Concentration of progesterone (P4) in G1 or G2 was considerably (P<0.01) decreased in pregnant than in non-pregnant cows at AI, although it was increased in pregnant than in non-pregnant cows at 7, 14, and 24 days after AI. And, not all cows had a considerable P4 concentration before to treatment. Economic evaluation, the cost of hCG at insemination was the lowest (L.E 232/animal), while the cost of hCG following a 5-day TAI technique was the highest (L.E 290/animal). | ||
| Keywords | ||
| Friesian cows; hCG; PGF2α; progesterone and Pregnant rate | ||
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