Abstract: An anti-inhibin antibody and its applications are provided. The antibody can have the inhibitory effect of inhibins on the secretion of endogenous follicle-stimulating hormone (FSH), promote the secretion of endogenous FSH and promote the development of animal follicles. The antibody can replace the use of FSH or pregnant mare serum Gonadotropin (PMSG) in animal reproduction, and can be used for promoting animal reproduction, estrus synchronization, conception and birth, embryo transferring, improving ovulation quality, promoting livestock reproduction, and inducing estrus in female livestock.

Abstract: Provided are an altrenogest injection and a preparation method and use thereof. The altrenogest injection includes 0.1-35 g altrenogest, 0.01-70 mL of polyethylene glycol, and a balance of an alcohol solvent per 100 mL of the altrenogest injection. The altrenogest injection can effectively inhibit estrus of sows, synchronize the estrus cycle of sows, and is more convenient and efficient to use, and the dosage is more precisely controllable. A single injection can effectively inhibit the estrus of sows for 6 to 12 days, which significantly reduces the labor costs for large-scale farms.