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Estrous Synchronization In Beef Heifers Using Progesterone Intravaginal Insert Cidr And A Two Injection System Of Prostaglandin Prostamate And Progesterone Estradiol In Conjunction With Time Breeding Regimen
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Book Synopsis Estrous Synchronization in Beef Heifers Using Progesterone Intravaginal Insert CIDR and a Two-injection System of Prostaglandin (ProstaMate and Progesterone-estradiol) in Conjunction with Time Breeding Regimen by : Brian Rogers
Download or read book Estrous Synchronization in Beef Heifers Using Progesterone Intravaginal Insert CIDR and a Two-injection System of Prostaglandin (ProstaMate and Progesterone-estradiol) in Conjunction with Time Breeding Regimen written by Brian Rogers and published by . This book was released on 2005 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study evaluated the degree of synchrony and the rate of first service non-return to estrus achieved when using a progesterone intravaginal insert (CIDR-Pharmacia Animal Health), and a two injection system of progesterone-estradiol combination (ABS) and prostaglandin (ProstaMate- Rx Veterinarian Products) in conjunction with one 24 h timed breeding regimen. A total of 39 virgin beef heifers (N=39) of different breeds where provided by different consignors from different areas of east Texas. The heifers were developed to reach an average body score of 5.0. All heifers were assigned to a protocol that consisted of CIDR estrous synchronization and breeding via AI according to 24 h timed insemination. All heifers were equipped with an electronic HeatWatch® transmitter to aid in heat detection, and were exposed to a vasectomized Jersey bull equipped with a chin-ball marker. The degree of synchrony and the rate of first service non-return to estrus were analyzed using the general linear model procedure and least square means analysis procedures of SAS (SAS Institute, Inc. Cary, NC.) to determine if there was any significant difference for breed, average daily gain, and age at time of insemination. (Abstract shortened).
Book Synopsis Estrous Synchronization in Beef Heifers Using Progesterone Intravaginal Insert (CIDR), and a Two-injection System of Prostaglandin (Lutalyse®), in Conjunction with Two Breeding Regimen[s] by : Emmett Eugene Capt
Download or read book Estrous Synchronization in Beef Heifers Using Progesterone Intravaginal Insert (CIDR), and a Two-injection System of Prostaglandin (Lutalyse®), in Conjunction with Two Breeding Regimen[s] written by Emmett Eugene Capt and published by . This book was released on 2003 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Comparison of Co-Synch + CIDR and ECP + CIDR as Estrus Synchronization Techniques for Timed Artificial Insemination of Beef Heifers by : Morgan J. Roberts
Download or read book A Comparison of Co-Synch + CIDR and ECP + CIDR as Estrus Synchronization Techniques for Timed Artificial Insemination of Beef Heifers written by Morgan J. Roberts and published by . This book was released on 2010 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study was conducted as an estrus synchronization technique comparison. The objective of this study was to compare the effectiveness of two different estrus synchronization protocols for use in beef heifers. Two CIDR based protocols were utilized in this study, Co-Synch + CIDR (progesterone, gonadotrophin releasing hormone, and prostaglandin) and ECP + CIDR (Estradiol Cypionate, progesterone, prostaglandin, and gonadotrophin releasing hormone). 65 heifers were located on the same farm, however, were separated into three groups for handling ease (Group 1=21, Group 2-23, and Group 3=21). 42 heifers (Group 1=21, Group 2=11, and Group 3=10 were synchronized using the Co-Synch + CIDR technique. Heifers were administered a 2.0 ml injection of GnRH at the time of CIDR insertion. The CIDR implants remained in the heifers for 7 days. A 5.0 ml injection of PGF was administered at the time of CIDR removal. Removal was followed by TAI 52 hours later. At the time of AI heifers received another injection of GnRH. 23 heifers (Group 2=12 and Group 3=11) received the ECP + CIDR protocol. Each heifer received a 0.5 ml injection of ECP at time of CIDR insertion. CIDR remained in heifers for 7 days. All heifers were administered a 5.0 ml shot of PGF at time of CIDR removal. 52 hours after removal, heifers were TAI and were given an injection of GnRH. Conception rates of 57.1%, 18.2 % and 60.0% were achieved with the Co-Synch + CIDR protocol after time artificial insemination. ECP + CIDR resulted in conception rates of 33.3% and 90.9% after timed artificial insemination.
Book Synopsis Estrous Synchronization in Beef Heifers Using Melengesterol Acetate (MGA), Synchro-Mate B® (SMB), and a Two Injection System of Prostaglandin (Lutalyse®), in Conjunction with Two Breeding Regimens by : Jeanie Ellen Bendy
Download or read book Estrous Synchronization in Beef Heifers Using Melengesterol Acetate (MGA), Synchro-Mate B® (SMB), and a Two Injection System of Prostaglandin (Lutalyse®), in Conjunction with Two Breeding Regimens written by Jeanie Ellen Bendy and published by . This book was released on 2000 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Improving Beef Cattle Reproductive Efficiency by : McKenzie R. Corpron
Download or read book Improving Beef Cattle Reproductive Efficiency written by McKenzie R. Corpron and published by . This book was released on 2020 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: Less than 10% of beef cow-calf producers in the United States currently implement reproductive technologies such as estrous synchronization and artificial insemination (AI) as a component of their breeding management program. Synchronization protocols aid in the synchrony of estrus and ovulation to improve cattle fertility, however, many protocols often require multiple hormone injections and animal handlings. Development of estrous synchronization protocols that limit number of injections, cost, and labor inputs, without compromising fertility, may improve the adoption of fixed-time artificial insemination (FTAI) within the beef industry. The main objective of the first study was to compare the effect of a single injection of high-concentration (HICON) prostaglandin F2[alpha] (PGF) or two conventional PGF injections (2PGF) administered 8 h apart at controlled internal drug release insert (CIDR) removal, on reducing serum progesterone (P4) before FTAI and on subsequent pregnancy per artificial insemination (P/AI) in postpartum beef cows (n=404) synchronized with a 5-d CO-Synch + CIDR breeding program. Serum P4 concentration at the time of insemination is a determining factor of cattle fertility in FTAI protocols, as lower concentrations have been associated with increased P/AI. A secondary objective of the first study was to assess the relationship between P4 concentration at the time of insemination and probability of pregnancy to AI. Progesterone concentrations at AI were lesser in 2PGF than HICON, however, P/AI was not different between treatments. Probability of pregnancy decreased as P4 concentration at AI increased and the optimal P4 cutoff concentration to optimize fertility was determined at 0.43 ng/mL. Intramuscular (i.m.) route of injection is commonly used to administer products used in estrous synchronization in beef cattle; however, this route causes greater incidence of injection-site lesions and tissue damage associated with reduced beef carcass quality and tenderness than subcutaneous (s.c.) routes. Therefore, use of s.c. administration is favorable to reduce carcass damage. The objective of the second study was to compare the ability of a single s.c. injection of high-concentration PGF (HICON-SC) with two i.m. injections of conventional PGF 6 h apart (2PGF-IM) to reduce P4 concentration and induce luteolysis by the time of AI in a 5-d CO-Synch + CIDR synchronization program in postpartum beef cows. A similar decline in P4 concentration occurred in both treatments following PGF, indicating s.c. administration of HICON could be an effective alternative to i.m. administration of the conventional double PGF dose to induce luteolysis before AI in the 5-d CO-Synch + CIDR protocol.
Book Synopsis Presynchronizing Injections of Prostaglandin F2[subscript][alpha] Or Prostaglandin F2[subscript][alpha] + Gonadotropin-releasing Hormone Before a Fixed Time Artificial Insemination CO-Synch + CIDR Program in Suckled Beef Cows by : Scott L. Hill
Download or read book Presynchronizing Injections of Prostaglandin F2[subscript][alpha] Or Prostaglandin F2[subscript][alpha] + Gonadotropin-releasing Hormone Before a Fixed Time Artificial Insemination CO-Synch + CIDR Program in Suckled Beef Cows written by Scott L. Hill and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We hypothesized that pregnancy outcomes may be improved by inducing luteal regression, ovulation, or both before a control CO-Synch + CIDR program (100 mcg GnRH i.m. [GnRH-1] and insertion of a progesterone-impregnated intravaginal controlled internal drug release [CIDR] insert on d -10, 25 mg PGF2alpha (PG) i.m. and CIDR insert removal on d -3, and 100 mcg GnRH i.m. [GnRH-2] and timed AI [TAI] on d 0) in suckled beef cows. This hypothesis was tested in 2 experiments, in which cows were treated with either PG or PG + GnRH before initiating a control CO-Synch + CIDR program to increase the proportion of cows starting the program in a low (1 ng/mL; Exp. 1) or high ([greater then or equal to] 1 ng/mL; Exp. 2) progesterone status, respectively. Blood was collected before each injection for later progesterone analyses. In Exp. 1, cows at 9 locations (n = 1,537) were assigned to either: (1) control or (2) PrePG (same as control with a PG injection on d -13). The PrePG cows had larger (P
Book Synopsis Effect of a CIDR Insert and Flunixin Meglumine Administered at the Time of Embryo Transfer on Pregnancy Rate and Resynchronization of Estrus in Beef Cattle by :
Download or read book Effect of a CIDR Insert and Flunixin Meglumine Administered at the Time of Embryo Transfer on Pregnancy Rate and Resynchronization of Estrus in Beef Cattle written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The objectives of this study were to evaluate the effects of flunixin meglumine (FM), an inhibitor of PGF2a synthesis, administered at the time of embryo transfer (ET) and insertion of an intravaginal progesterone-releasing device (CIDR) at the time of ET on pregnancy rates (PR) and the resynchronization of estrus. Beef cows (n = 796) and heifers (n = 108) at three locations were assigned randomly within age to one of four groups in a 2 x 2 factorial arrangement of treatments with injection of FM (500 mg i.m.; Phoenix Scientific, St. Joseph, MO) 2 to 12 min prior to ET and insertion of a CIDR (1.38 g progesterone; Pfizer, New York, NY) for 13 d immediately following ET as main effects. Fresh or frozen embryos (Stage = 4 or 5; Grade = 1 or 2) were randomly assigned to be transferred to recipients on d 6 to 9 of the estrous cycle. At Location 2 a subset of fresh embryos were split and transferred as fresh half embryos (n = 192). Recipients at Location 2 only (n = 493) were observed for signs of return to estrus beginning 9 d after ET. Recipients that returned to estrus at Location 2 were either bred by AI 12 h after estrus or received an embryo 7 d after estrus. Pregnancy was diagnosed by ultrasonography. Pregnancy rates were analyzed using the LOGISTIC procedure of SAS. Pregnancy rates of split embryo recipients were analyzed separately using the same statistical procedure. Variation in the timing of the return to estrus was determined by an F-test for heterogeneity of variances.
Download or read book Garten der Gesundheit written by and published by . This book was released on 1509 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Current and Future Reproductive Technologies and World Food Production by : G. Cliff Lamb
Download or read book Current and Future Reproductive Technologies and World Food Production written by G. Cliff Lamb and published by Springer Science & Business Media. This book was released on 2013-10-29 with total page 255 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book addresses the impacts of current and future reproductive technologies on our world food production and provides a significant contribution to the importance of research in the area of reproductive physiology that has never been compiled before. It would provide a unique opportunity to separate the impacts of how reproductive technologies have affected different species and their contributions to food production. Lastly, no publication has been compiled that demonstrates the relationship between developments in reproductive management tools and food production that may be used a reference for scientists in addressing future research areas. During the past 50 years assisted reproductive technologies have been developed and refined to increase the number and quality of offspring from genetically superior farm animal livestock species. Artificial insemination (AI), estrous synchronization and fixed-time AI, semen and embryo cryopreservation, multiple ovulation and embryo transfer (MOET), in vitro fertilization, sex determination of sperm or embryos, and nuclear transfer are technologies that are used to enhance the production efficiency of livestock species.
Download or read book Herd Health written by O. M. Radostits and published by . This book was released on 2001 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text offers integrated coverage of all aspects of herd animals - dairy and beef cattle, calves, sheep, and swine. It provides strategies for herd health management and gives the basic knowledge for production-oriented animal health management.
Book Synopsis Veterinary Obstetrics and Genital Diseases (theriogenology) by : Stephen J. Roberts
Download or read book Veterinary Obstetrics and Genital Diseases (theriogenology) written by Stephen J. Roberts and published by . This book was released on 1986 with total page 981 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Management of Dairy Herds by : E. V. Ellington
Download or read book The Management of Dairy Herds written by E. V. Ellington and published by . This book was released on 1917 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Husbandry and Health of the Domestic Buffalo by : W. Ross Cockrill
Download or read book The Husbandry and Health of the Domestic Buffalo written by W. Ross Cockrill and published by . This book was released on 1974 with total page 393 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Systematic Reviews in Health Care by : Matthias Egger
Download or read book Systematic Reviews in Health Care written by Matthias Egger and published by John Wiley & Sons. This book was released on 2008-04-15 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second edition of this best-selling book has been thoroughly revised and expanded to reflect the significant changes and advances made in systematic reviewing. New features include discussion on the rationale, meta-analyses of prognostic and diagnostic studies and software, and the use of systematic reviews in practice.
Book Synopsis Markov Chain Monte Carlo in Practice by : W.R. Gilks
Download or read book Markov Chain Monte Carlo in Practice written by W.R. Gilks and published by CRC Press. This book was released on 1995-12-01 with total page 505 pages. Available in PDF, EPUB and Kindle. Book excerpt: In a family study of breast cancer, epidemiologists in Southern California increase the power for detecting a gene-environment interaction. In Gambia, a study helps a vaccination program reduce the incidence of Hepatitis B carriage. Archaeologists in Austria place a Bronze Age site in its true temporal location on the calendar scale. And in France,
Download or read book Beef Manager written by Mike Halls and published by . This book was released on 1991 with total page 283 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Mammalian Oviduct by : Elsayed Saad Eldin Hafez
Download or read book The Mammalian Oviduct written by Elsayed Saad Eldin Hafez and published by . This book was released on 1969 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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