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作者:Nelcio Antonio Tonizza de Carvalho , Julia Gleyci Soares , Pietro Sampaio Baruselli
来源:[J].Theriogenology(IF 2.082), 2016, Vol.86 (1), pp.200-206Elsevier
摘要:... Anestrous buffaloes have insufficient pulsatile of LH to support the final stages of follicular development, and subsequently, estrus behavior and ovulation do not occur, limiting reproductive efficiency, especially in artificial insemination (AI) programs. A number of therap...
作者:R Kasimanickam , S Schroeder , M Assay ...
来源:[J].Reproduction in Domestic Animals(IF 1.392), 2014, Vol.49 (5), pp.775-782Wiley
摘要:Contents(#br)The objectives were (i) to evaluate the effect of temperament, determined by modified 2‐point chute exit and gait score, on artificial insemination ( AI ) pregnancy rates in beef heifers following fixed time AI and (ii) to determine the effect of temperament o...
作者:F.De Rensis , P Marconi , T Capelli ...
来源:[J].Theriogenology(IF 2.082), 2002, Vol.58 (9), pp.1675-1687Elsevier
摘要:... In conclusion, we have shown that veterinary supervision combined with a program of estrous synchronization and fixed time insemination can improve fertility of cows suffering heat stress.
作者:J. Kurykin , Ü. Jaakma , M. Jalakas ...
来源:[J].Theriogenology(IF 2.082), 2006, Vol.67 (4), pp.754-759Elsevier
摘要:Abstract(#br)Our objective was to assess the effect on heifer pregnancy rate of deposition at three sites within the uterus of frozen-thawed sex-sorted sperm at a fixed time after estrus synchronization. Estrus was synchronized in 209 heifers by administration of PGF2a 14 days ...
作者:Bikalpa Karki , Rabin Raut , Krishna Prasad Sankhi ...
来源:[J].International Journal of Applied Sciences and Biotechnology, 2018, Vol.6 (3), pp.261-264IJASB
摘要:... Rectal examination confirmed pregnancy after 2 months of artificial insemination (AI). 16 cows expressed clear estrus signs during fixed time AI. 5 (83.3%) out of 6 cows with cystic ovary expressed estrus at the time of fixed time AI. 4 (66.7%) of these cows became pregnan...
作者:Ubah Simon Azubuike , Rekwot Peter Ibrahim , Adewuyi Abdulmujeeb Bode ...
来源:[J].Journal of Agricultural Science and Technology A, 2019, Vol.9 (1)DPC
摘要:... Cows that showed mucus discharge from the vagina on the day of artificial insemination (AI) were recorded as well as those that had patent cervix. Cervical dilation was measured by taking note of the cows that had mid cervix insemination due to non-passage of the AI gun ...
作者:De Rensis F , Marconi P , Capelli T ...
来源:[J].Theriogenology(IF 2.082), 2002, Vol.58 (9), pp.1675-87PubMed
摘要:... In conclusion, we have shown that veterinary supervision combined with a program of estrous synchronization and fixed time insemination can improve fertility of cows suffering heat stress.
作者:Rhian Price
来源:[J].Farmers Weekly, 2017, Vol.168 (12), pp.42-43ProQuest
作者:Gugssa Tadesse , Ashebir Gebregiorgis , Yayneshet Tesfay
来源:[J].Tropical animal health and production, 2016, Vol.48 (6), pp.1209-13PubMed
摘要:The study was conducted to evaluate estrus response, time to the onset of estrus, and conception rate at fixed time AI and AI at detected estrus in local and crossbred heifers and cows subjected to double administration of PGF2α. One hundred twenty local (heifers, n = 27; co...

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