First Lessons in Poultry Keeping: First Year Course (Classic Reprint) - Softcover

Robinson, John H.

Softcover

ISBN 10: 1332012833 ISBN 13: 9781332012831

Verlag: Forgotten Books, 2019

Inhaltsangabe

Excerpt from First Lessons in Poultry Keeping: First Year Course

Primarily the objections to inbreeding are based, as has been stated, on social and religious arguments. As these can apply in a question like this only in so far as it can be shown that they affect physical condition we need not enter into them here. It is sufficient to consider the subject solely from the physical standpoint, and as it practically concerns the poultry breeder.

It is claimed by those who oppose inbreeding that it produces certain and rapid physical deterioration. That it leads inevitably to degeneracy and sterility They will admit that by inbreeding some superficial, fancy points may he obtained in greater perfection, but claim that inbreeding cannot be carried beyond a very few generations except at the expense of vigor, stamina, size, productiveness, and that if persisted in it leads surely to the extinction of the line. In support of their position they refer to instances cited by early writers of the Darwinian school, to the conclusions of leading investigators of that period, to occasional experiences with or experiments in inbreeding poultry, and to the very evident fact that a great many stocks of pure bred fowls are deficient in stamina and practical qualities. The fact that many mongrel stocks on farms and elsewhere which breed indiscriminately; quickly deteriorate is also cited in this connection.

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Details zur Ausgabe

• Verlag: Forgotten Books
• Erscheinungsdatum: 2019
• Sprache: Englisch
• ISBN 10: 1332012833
• ISBN 13: 9781332012831
• Einband: Taschenbuch
• Anzahl der Seiten: 172
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