Efficacy of repeatedly used CIDR device in cattle reproduction: a metaanalysis review of progesterone concentration and conception rate

Authors : Muhammad Furqan Asghar CHACHER, Armağan ÇOLAK, Armağan HAYIRLI

Pages : 692-697

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Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :  n order to reduce estrus synchronization cost, utilization of residual progesterone insert ignore into journalissuearticles values(P4); in the used controlled internal drug release insert ignore into journalissuearticles values(CIDR); device upon sanitization can be possible. Two datasets were compiled from 8 and 7 research articles involving 3434 insert ignore into journalissuearticles values(2653 heifers + 771 lactating cows + 10 ovariectomized cows); and 7301 cattle insert ignore into journalissuearticles values(3879 heifers + 3422 lactating cows); to evaluate blood P4 concentration and conception rate, respectively, in response to repeatedly used CIDR devices after sanitization via autoclaving and disinfection. As the number of CIDR usages increased, blood P4 concentration decreased linearly insert ignore into journalissuearticles values(y = -0.484X + 3.135, R2 = 0.99, P < 0.001);. Blood P4 concentration insert ignore into journalissuearticles values(1.52 vs. 2.20 ng/mL; P < 0.002); and conception rate insert ignore into journalissuearticles values(40.76 vs. 32.96%, P < 0.05); for lactating cows were lower than those for heifers. The sanitization method did not affect blood P4 concentration, but reused CIDR device subjected to disinfection was associated with reduced conception rate. In summary, depending upon the initial P4 load insert ignore into journalissuearticles values(1.38-1.90 g);, the CIDR device could be used twice in lactating cows and four times in heifers after autoclaving to achieve target blood P4 concentrations.
Keywords : Blood P4, CIDR device, conception rate, sanitization