Pharmacological methods to improve embryo production and pregnancy in sheep and goats.
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Abstract: Reproductive efficiency in sheep and goats is significantly affected by early luteal regression and insufficient circulating progesterone ([P4]) levels, particularly under conditions of induced or seasonal estrus and superovulation. This review explores the physiological basis and the effects of pharmacological interventions, especially the administration of human chorionic gonadotropin (hCG), to induce accessory corpora lutea (aCL) with the goal of improving progesterone profiles and supporting embryo production and pregnancy maintenance. Recent studies in Brazil have demonstrated the potential of hCG and other hormonal treatments to enhance luteal function, pregnancy rates, and in vivo embryo production in both cyclic and acyclic females. In addition, potential pharmacological intervention to overcome precocious regression of corpora lutea in superovulated sheep and goats are reported.
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Goats, Sheep, Reproduction, Reproductive efficiency