目的 为揭示简州大耳羊的生长发育规律，指导科学饲养管理。 方法 整理分析简州大耳羊原种场2010—2020年简州大耳羊第四世代核心群生产性能记录资料，分析简州大耳羊出生至成年的体质量与体尺生长发育相关性。 结果 0~8月龄公、母羊体质量、体尺均呈直线上升趋势，其生长发育速度极快，8月龄后其生长速度减缓；不同生长期相对生长变化曲线表明，早期公羊生长强度比母羊小，4月龄以后则比母羊大；公、母羊2月龄断奶之前日增质量分别高达200.83、199.67 g，4~6月龄公、母羊平均日增质量分别达到158.00、100.00 g，0~30月龄整个生长期，公羊日增质量都比母羊高，公、母羊之间体质量差异显著，体尺差异极显著，且公羊体质量和体尺均都明显高于母羊。 结论 简州大耳羊0~8月龄生长发育速度极快，具有早期生长速度快的特点；在0~30月龄整个生长期日增质量、体质量和体尺均呈现公羊比母羊高的特点。

Objectives To reveal the growth and development patterns of Jianzhou big-eared goat and guide scientific breeding management. Methods The production performance records of the fourth generation core group of Jianzhou big-eared goat from 2010 to 2020 in the original breeding farm were sorted and analyzed to examine the correlation between body weight and body size growth from birth to adulthood. Results The body weight and body measurements of male and female sheep aged 0–8 months showed a linear upward trend, with very rapid growth and development speed, which slowed down after 8 months of age. The relative growth change curves during different growth periods indicate that early growth intensity of male lambs is smaller than that of female lambs, but surpasses the females after reaching 4 months of age. The daily weight gains before weaning at 0–2 months reached 200.83 g and 199.67 g for male and female lambs, respectively. The average daily weight gain from 4–6 months was 158.00 g for males and 100.00 g for females. Over the entire growth period from 0–30 months, daily weight gains showed males consistently surpassed females. During the entire 0–30 months period, there were significant differences in body weight and highly significant differences in body measurements between males and females, with both the body weight and body measurements of males being markedly higher than those of females. Conclusions Jianzhou big-eared goat show extremely rapid growth and development from 0 to 8 months, characterized by fast early growth rates. Across the entire 0–30 months growth period, daily weight gain, body weight, and body measurements of males were consistently higher than those of females.