The Problem Necessity and Value ofT heory Darwin sT heory An Opposite View Pangenesis Continuity of Germ Plasm The Explanations Compared Relation of Practice to the Theories 66 72 CHAP. VIII. BREEDING AND SELECTION. Basis of Control of Heredity Why Offspring Resembles Parents Ancestry and Prepotency--H ow Atavism May Occur 78 78 CHAP. IX. INDIVIDUAL EXCELLENCE IN BREEDING ANIMALS. Foundation Stock Types Value ofT ype Need ofF ullS tudy Breeder must be a Judge Prepotency Character Significance of Character A ge and Prepotency Fancy Points 79 92 CHAP. X. PEDIGREES OF BREEDING ANIMALS. Progeny theB est Test Form of Pedijgrree All Ancestors Must beS tudied Breeding Records of Parents Similarity ofT ype in Parents Value of Show A wards Fair Estimate of Sire Advanced Registers Obscured Merit Grandparents Near andR emote Ancestors Fashion andF amily Names Significance of Breeders Names Correctness of Pedigrees 93 110 CHAP. XI. THE OFFSPRING DURING GESTATION. Relation ofF oetus toD am Effect Upon Foetus of Maternal Impressions Need of Care in Management Nutrition ofO ffspring Feeding theD am Growth of Bovine Foetus Influence of a Previous Impregnation 111 120 CHAP. XII. DEVELOPMENT OF YOUNG STOCK.
(Typographical errors above are due to OCR software and don't occur in the book.)
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Vendeur : PBShop.store US, Wood Dale, IL, Etats-Unis
HRD. Etat : New. New Book. Shipped from UK. Established seller since 2000. N° de réf. du vendeur M0-9788187067689
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Vendeur : PBShop.store UK, Fairford, GLOS, Royaume-Uni
HRD. Etat : New. New Book. Shipped from UK. Established seller since 2000. N° de réf. du vendeur M0-9788187067689
Quantité disponible : 1 disponible(s)
Vendeur : Vedams eBooks (P) Ltd, New Delhi, Inde
Hardbound. Etat : As New. New. Contents Introduction. 1. Earlier stock breeding. 2. American stock breeding. 3. Heredity. 4. Facts concerning reproduction. 5. The germ cells. 6. The hereditary material. 7. Origin of the hereditary material. 8. Breeding and selection. 9. Individual excellence in breeding animals. 10. Pedigrees of breeding animals. 11. The offspring during gestation. 12. Development of young stock. 13. Determination of sex. 14. Foundation and management of a breeding business. 15. Inbreeding and line breeding.16. Mendel's law. 17. Breed relations. 18. Breeders associations. 19. Horse breeding. 20. Cattle breeding. 21. Sheep breeding. 22. Swine breeding. Stock farming is growing more popular both in theory and in practice. A scientific study of crop production makes clear the necessity of feeding the crops on the farm and the market conditions have afforded encouragement to the breeders and feeders of good stock. In crop growing and in stock feeding much practical aid has been furnished by the scientists notably by the chemists. The breeders naturally look to the biologists for assistance but up to the present any directions they may have received have been quite definite and not always practical ones. The main object of this book is to direct attention away from profitless speculations that have necessarily characterized some earlier books and to stimulate interest in the more tangible the physical basis of heredity. A scientific study of the physical aspects of heredity leads to conclusions that fully accord with the teachings of the work of our master breeders. It has been the aim to limit discussion to points upon which scientific opinion is quite well agreed though this has not been altogether possible. Free consultation of the references cited will give a deeper acquaintance with scientific aspects of the question. 194 pp. N° de réf. du vendeur 63309
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