. Estudios en la cría del caballo [microforma] : ilustra un tratado sobre la ciencia y la práctica de la cría de caballos. Chevaux; Caballos; Caballos; Chevaux. 20 STUDIKS HORSIO JIKKKDING l.N 37. Cómo está formado el huevo. Hay dos jefes de divisiones ot eggr formación conocida como formaciones primarias y secundarias 1 él ex son los desarrollados íntegramente dentro de los ovarios, mientras que las segundas son aquellos desarrollados parcialmente dentro del ovario y, por otra parte, w.thni el oviducto, tales como el shell en el huevo de una heii el huevo de la yegua pertenece a la clase anterior, ya que se desarrolla totalmente dentro del ovario. Hay sever

• Colaborador/a: The Book Worm / Alamy Foto de stock
• ID de la imagen: RENN9C
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. Studies in horse breeding [microform] : an illustrated treatise on the science and practice of horse breeding. Chevaux; Horses; Horses; Chevaux. 20 STUDIKS l.N HORSIO JIKKKDING 37. How the Egg IS Formed. There are two chief divisions ot eggr formation known as primary and secondary formations 1 he former are those developed wholly within the ovaries, while the latter are those developed partly within the ovary, and partly w.thni the oviduct, such as the shell upon the egg of a heii The egg of the mare belongs to the former class, since it is developed wholly within the ovary. There are several changes made in the egg ot the mare alter it leaves the ovary, but as these have to .."i.l'twM!''"''^" i maturing or ripening only, it can hardly be saic that they are developed in any manner outside of the ovary hggs are capable ot being divided into two other classes' simple and compound eggs. The former are such as are devel- oped in an ovary out ot a single germinal cell. The latter are those produced by the union of several cells, and- formed in two. Figure IS.-Kgg of the marc, greatly enlarged, a, egg nucleus ⢠b volW â c. ^.ona^pellucda- the granules surrounding'.hf egg a- k"own°'as different glands of the sexual organs of the female ComnonnH eggs are found only in a few of the more prSve sSes a discussion of which will occupy no place in this work. 38. The EggâWhen Discharged From the Ovarv Fnriv investigators held to the opinion that the egg u^ITs'ch.reed from the ovary during the heat period (c.estrum) AIo foUhf te.xt books now in use are still teaching this theory. In the case of omo species I believe this to be the rule, mo're particularh z ir t', ;;::"%"'f" "^ '^""r^'-^^ie aow of biood is ex;!;? li a at this time. So far as the mare is concerned there is only occasKina ly seen a discharge of blood, and when there s it is never earier than the third day after the cessation of thS'hea? period 1 he one thing