Results 31 to 40 of about 105 (71)
EFFECT OF DOUBLE OR PRE-SYNCHRONIZATION OVSYNCH PROTOCOLS ON FOLLICULAR DYNAMICS, PROGESTERONE PROFILE AND FIRST SERVICE PREGNANCY RATE IN TIMED ARTIFICIAL INSEMINATION IN FRIESIAN COWS [PDF]
Journal of Animal and Poultry Production, 2015 Aim of this study was to determine the effect of double-Ovsynch (DO) and pre-synchronization (PS) protocols on ovarian follicular dynamics, progesterone (P4) concentration and pregnancy rate at first postpartum AI in Friesian cows.
M. Omar, M. El-Banna, M. El-Harairy
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Inseminations at estrus induced by the presynch protocol before timed artification insemination
Kansas Agricultural Experiment Station Research Reports, 2004 A controlled field study examined conception rates after two timed-AI (TAI) breeding protocols conducted on two commercial dairy farms. Estrous cycles in postpartum lactating cows were presynchronized with two injections of PGF2" given 14 days apart (Presynch) and then, after 12 days, the standard Ovsynch protocol (injection of GnRH 7 days before and ...
A.P. Phatak, Jeffrey S. Stevenson
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158 Comparison of different presynch-based synchronization protocols in postpartum dairy cattle
Journal of Animal Science, 2019 Abstract Objectives were to evaluate three timed AI presynch-based synchronization protocols in lactating Holstein-Frisian cattle. Lactating cows (n = 207) were randomly divided into one of the three treatments: 1)PG-PG-Ovsynch (n = 71), cows were subjected to PG(PGF2α;i.m) at 11-d apart.
Abid Hussain SHAHZAD +5 more
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An investigation on the possibility of using eCG for presynchronization prior to ovsynch in dairy cow [PDF]
Iranian Journal of Veterinary Medicine, 2018 Background: Presynchronization could enhance fertility in timed breeding programs. The best presynchronization method has to justify biological requirements and to provide practical and economic advantages.
Amir Niasari-Naslaji +3 more
doaj +1 more source
Revista Científica, 2023 The objective of the field experiment was to study the effect of different protocols for estrus synchronization with timed artificial insemination (TAI) on the manifestation of clini- cal signs of estrus (CSE) and conception rates in the Bulgarian ...
Radena Nenova
doaj
A COMPARATIVE STUDY OF PRE-SYNCHRONIZATION PROTOCOLS G7G AND eCG PROTOCOL IN DAIRY COWS IN ANBAR GOVERNORATE, IRAQ [PDF]
Assiut Veterinary Medical JournalThis study was conducted on privately-owned dairy farms in Al-Anbar Province, Iraq, from July 2023 to January 2024. The aim of the study was to evaluate the impact of timed artificial insemination (TAI) on the calving interval (CI), days open (DO), and ...
HANI ALRAWI, ISMAEL KORIDI
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Beni-Suef University Journal of Basic and Applied Sciences, 2019 Background It is comprehensively recognized that reduced reproductive efficiency represents a great economic loss to dairy producers. Ovarian cysts and anestrus syndromes are considered the greatest significant causes of low reproductive efficiency in ...
Abdeltawab Abdelrazek Yassin Khalil
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Expression and detection of estrus in dairy cows: the role of new technologies
Animal, 2014 Despite the widespread adoption of hormonal synchronization protocols that allow for timed artificial insemination (AI), detection of estrus plays an important role in the reproductive management program on most dairies in the United States.
P.M. Fricke +5 more
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Ankara Üniversitesi Veteriner Fakültesi Dergisi, 2020 The aim of this study was to investigate the effects of using presynch-10 and ovsynch synchronization protocols on endometrial expression and serum levels of insulin-like growth factor-1 (IGF-1) that thought to play roles during endometrial healing process in cows diagnosed with repeat breeder syndrome (RBS) and subclinical endometritis (SE).
Ali Reha AĞAOĞLU +3 more
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Eurasian Journal of Veterinary Sciences, 2020 Amaç: Sunulan çalışmada Holstein ırkı ineklerde target breeding ve presynchovsynch senkronizasyon protokollerinin ilk tohumlamadaki gebe kalma oranı üzerine etkilerinin belirlenmesi amaçlanmıştır. Gereç ve Yöntem: Çalışmada postpartum 30-35. günler arasında olan ve 2,5-6 yaşlı 160 sağlıklı Holstein ırkı inek kullanıldı.
Alkan, Hasan, Alkan, Kübra Karakaş
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