Chapter11 reproduction Section1 Introduction Section2 Male reproduction Section3 Female reproduction
Chapter11 reproduction Section1 Introduction Section2 Male reproduction Section3 Female reproduction
Section1 Introduction
Section1 Introduction
Reproduction The formation of new living entities, which closely resemble to the parent species. The processes are very complex including production of sperms and ova,sexual intercourse,fertilization,pregnancy, development of fetus and lactation
Reproduction The formation of new living entities, which closely resemble to the parent species. The processes are very complex including production of sperms and ova, sexual intercourse, fertilization, pregnancy, development of fetus and lactation
性成熟和体成熟 性成熟：生殖器官和副性征基本发育完全，具备繁 殖能力，叫性成熟。 初情期：性成熟的开始阶段 体成熟：动物的生长基本结束，并具有成年动物所固 有的形态和结构特点，称体成熟. 影响性成熟的因素 1、动物的种类和品种 2、气候因素 3、营养因素 4、群体因素 繁殖季节 常年繁殖：牛、猪、家兔等 季节性繁殖：马、羊、狗等
繁殖季节 常年繁殖：牛、猪、家兔等 季节性繁殖：马、羊、狗等 性成熟和体成熟 性成熟：生殖器官和副性征基本发育完全，具备繁 殖能力,叫性成熟。 初情期：性成熟的开始阶段 体成熟：动物的生长基本结束,并具有成年动物所固 有的形态和结构特点,称体成熟. 影响性成熟的因素 １、动物的种类和品种 ２、气候因素 ３、营养因素 ４、群体因素
Section2 Male reproduction
Section2 Male reproduction