Results 61 to 70 of about 171,951 (173)
Estrous Synchronization in Heifers
, 2019 Significant genetic improvements can be achieved through artificial insemination (AI). AI has greatly enhanced the US cattle industry. Slow adoption of AI by beef producers has been well documented. Estrous synchronization is a tool that is commonly used
Richey, Sarah Kaitlin, Burns, Matthew
core +1 more source
Journal of Tropical Life Science, 2019 Hormonal oestrus synchronization is often used to obtain the same gestational ages animal models, but it may not physiologic nor practical. This research was conducted to find out a simple method in obtaining physiologic pregnant experimental animals. We
Teguh Wahju Sardjono +4 more
doaj
Reproduction in Domestic Animals, Volume 61, Issue S3, October 2026.ABSTRACT This study directly compares hCG and buserelin as ovulation‐inducing agents following eCG‐based superovulation in weaned donor sows, focusing on their practical impact on ovulation‐embryo synchrony under field conditions. Fifty‐five multiparous sows received 1000 IU eCG 24 h after weaning and were treated at onset of estrus with either 750 IU ...
A. Lopez‐Jara +7 more
wiley +1 more source
Estrous Synchronization Programs for Lactating Cows [PDF]
, 2002 Two estrous synchronization experiments were conducted on lactating cows to compare the Select Synch program with the one injection PGF- 10-day program and the CO-Synch mass AI program.
Plugge, Brent +2 more
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Tropical and Subtropical Agroecosystems, 2019 Evaluation of the reproductive tract development (RTD) is a criterion rarely used when heifers are included in estrous synchronization programs. The objective was to determine the effect of RTD and hormonal treatment (HT) on estrous and ovarian activity ...
Jorge Alonso Peralta Torres +5 more
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Reproduction in Domestic Animals, Volume 61, Issue S3, October 2026.ABSTRACT The efficiency of AI in sheep depends partly on maintaining sperm function during storage. This study compared INRA 96 and a skim milk‐based formulation for storing ram semen at 15°C for 6 h, evaluating sperm quality and IVF and field fertility outcomes. INRA 96 showed higher VCL, ALH, and sperm viability after 6 h of storage.
Marta Neila‐Montero +10 more
wiley +1 more source
Comparison of Long-Term Progestin-Based Estrous Synchronization Protocols in Beef Cows and Heifers
, 2011 Synchronization protocols utilizing a 14-day pre-treatment with exogenous progestins prior to gonadotropin releasing hormone (GnRH), and prostaglandin (PG) treatments have been shown to be effective for estrous synchronization in beef cows and heifers ...
Rowe, M. P. +4 more
core +1 more source
Reproduction in Domestic Animals, Volume 61, Issue S3, October 2026.ABSTRACT Efficient reproductive management in commercial swine production requires minimising non‐productive days and ensuring rapid return to oestrus after weaning. The present study evaluated the effect of pre‐weaning administration of cloprostenol, a PGF2α analogue, on early reproductive indicators in sows under commercial farm conditions.
Sara Crespo, Joaquín Gadea
wiley +1 more source
Letrozole: A Steroid-Free Estrous Synchronization Method [PDF]
, 2018 Most bovine estrous synchronization protocols utilize progesterone plus estrogen to control ovulation timing. A drug that inhibits estrogen production (Letrozole) may be an alternative, steroid-free synchronization method (not yet commercially available).
Kurz, Scott G. +7 more
core
Syncronization Technology for The Reproductive Management in Sambar Deer (Rusa Unicolor Brookei)
Animal Production: Indonesian Journal of Animal Production, 2009 Research to study the synchronization technology to improve the reproductive of captive sambar deer (Rusa unicolor brookei) was conducted using 10 hinds and three stags aged 8 -10 years. Estrous induction was done using local intravaginal spon containing
AS Dradjat, G Semiadi
doaj