Abstract
This study was conducted to determine whether flushing or the stimulus of estrogenized goats is necessary to achieve a high reproductive response in anestrous goats on rangeland. Does were feed-supplemented on rangeland (flushed, n = 20). Other group was exposed to estrogenized does during the mating period (stimulated, n = 20). A third group was both supplemented and stimulated (stimulated–flushed, n = 20) and other group grazed on rangeland only (control, n = 18). More goats in the stimulated and stimulated–flushed groups showed estrus during the first 5 days of joining (45% and 60%, respectively) than the control and flushed groups (11% and 5%, respectively; P < 0.05). Flushing did not improve prolificacy and reduced (P < 0.05) kidding rates (40% and 35% for the flushed and stimulated–flushed groups, respectively) compared to 67% and 55% for the control and stimulated groups, respectively. This experiment demonstrates potential shortcomings of use of flushing in range goats with inadequate nutrition during gestation.
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Acknowledgments
The authors are grateful to Mr. Paulo Cervera for providing the goats used in this study, and to C Martínez and JL Carrera and graduate students of the Animal production program of the Autonomous Agrarian University Antonio Narro for their technical assistance during the study.
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De Santiago-Miramontes, M.A., Luna-Orozco, J.R., Meza-Herrera, C.A. et al. The effect of flushing and stimulus of estrogenized does on reproductive performance of anovulatory-range goats. Trop Anim Health Prod 43, 1595–1600 (2011). https://doi.org/10.1007/s11250-011-9849-6
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DOI: https://doi.org/10.1007/s11250-011-9849-6