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Animal Science Database

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Abstract

The aim of this study was to document the effectiveness of the implementation of a cosynch protocol and fixed time artificial insemination in suckled beef cows kept under range conditions in Germany. In addition, the suitability of hCG administration as an alternative to the GnRH analog buserelin...

Author(s)
Schmitz, W.; Kramer, M.; Erhardt, G.; Gauly, M.; Driancourt, M. A.; Holtz, W.
Publisher
Elsevier B.V., Amsterdam, Netherlands
Citation
Livestock Science, 2017, 206, pp 141-147
Abstract

Prostaglandin F (PGF) is commonly injected intramuscularly (IM) in female cattle in synchronization protocols. A novel site for administration of PGF that improves beef quality assurance is the ischiorectal fossa (IRF). The objective of this study was to determine whether administration of...

Author(s)
Holland, S. C.; Whittier, W. D.; Clark, S. G.; Hafez, S. A.; Swecker, W. S.
Publisher
Elsevier B.V., Amsterdam, Netherlands
Citation
Animal Reproduction Science, 2018, 198, pp 11-19
AbstractFull Text

Bos taurus and Bos indicus crossbred through Timed Artificial Insemination [TAI] is present in several farms in Brazil. Aiming the advantages of the TAI together with industrial crossing, the objective was to verify the economic feasibility of this activity on a farm in the city of Nova Lacerda,...

Author(s)
Zuchi Neto, N.; Dalchiavon, F. C.
Publisher
Instituto Pecege, Piracicaba, Brazil
Citation
Revista iPecege, 2017, 3, 3, pp 23-27
Abstract

This study aimed to evaluate the reproductive performance of heifers aged ≤15 months versus ≥27 months heifers using fixed-time artificial insemination protocols (TAI). Ninety-two crossed beef heifers (Red Angus × Nellore) were surveyed divided into two categories by age range: animals 15 months...

Author(s)
Gassenferth, G.; Talini, R.; Kozicki, L. E.; Pedrosa, V. B.; Segui, M. S.; Cruz, F. B.
Publisher
Universidade Federal do Paraná, UFPR, Palotina, Brazil
Citation
Archives of Veterinary Science, 2016, 21, 4, pp 123-130
Abstract

Bulls are used across a wide variety of environments through the use of artificial insemination. However, not all bulls rank the same for genetic merit in all environments. Sire selection could be more accurate via improved methods of characterization. The objective of this study was to evaluate...

Author(s)
Fennewald, D. J.; Weaber, R. L.; Lamberson, W. R.
Publisher
American Society of Animal Science, Savoy, USA
Citation
Journal of Animal Science, 2018, 96, 2, pp 422-429
Abstract

Two experiments were conducted to evaluate breed [Angus (AN), Brahman (BR), and varying percentages of BR × AN breeding] and prostaglandin F (PGF) type [dinoprost tromethamine (dinoprost) vs. cloprostenol sodium (cloprostenol)] in suckled cows (Exp. 1; n=504) and 2-yr-old virgin heifers (Exp. 2;...

Author(s)
Esterman, R. D.; Alava, E. N.; Austin, B. R.; Hersom, M. J.; Rae, D. O.; Elzo, M.; Yelich, J. V.
Publisher
American Registry of Professional Animal Scientists (ARPAS), Champaign, USA
Citation
Professional Animal Scientist, 2016, 32, 5, pp 636-646
Abstract

This study compared artificial insemination pregnancy rate (AI-PR) between 14-day CIDR-GnRH-PGF2α-GnRH and CIDR-PGF2α-GnRH synchronization protocol with two fixed AI times (56 or 72 hr after PGF2α). On day 0, heifers (n=1311) from nine locations assigned body condition score (BCS: 1, emaciated; 9,...

Author(s)
Kasimanickam, R. K.; Hall, J. B.; Whittier, W. D.
Publisher
Wiley, Berlin, Germany
Citation
Reproduction in Domestic Animals, 2017, 52, 1, pp 122-129
Abstract

An experiment was conducted with 15- to 18-month-old Simmental cows, Angus cows and Qinchuan cows, to conduct cow reproductive tract rating (RTS). The RTS was above level III in > 85% cows. The non-return rate of cows after artificial insemination increased with increasing RTS levels, and an...

Author(s)
Zhang NiNa; Zheng YuXin; Liu HongHua; Liu FuZhu; Jiang ZhongLiang
Publisher
Guoji Shudian (Institute of Scientific and Technological Information of China, China Publications Centre), Beijing, China
Citation
Chinese Journal of Animal Science, 2017, 53, 7, pp 53-55
Abstract

The objective of the current study was to determine if Nerve Growth Factor-Beta (NGF), purified from bovine seminal plasma, would improve corpus luteum function and enhance conceptus development when administered to cows at artificial insemination. Angus cows (n=60) were synchronized using a...

Author(s)
Stewart, J. L.; Mercadante, V. R. G.; Dias, N. W.; Canisso, I. F.; Yau, P.; Imai, B.; Lima, F. S.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2018, 106, pp 30-38
Abstract

Two experiments were conducted to evaluate the effect of long-term (LT; a 14-day controlled internal drug release insert [CIDR]-PGF2α [PGF]-GnRH) and short-term (ST; 5-day CO-Synch+CIDR) progesterone-based protocols on pregnancy rate to fixed-time artificial insemination (FTAI) in beef heifers. In...

Author(s)
Kasimanickam, R.; Schroeder, S.; Hall, J. B.; Whittier, W. D.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2015, 83, 7, pp 1226-1232

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