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1 Scientific Farm Animal Production, 10 th ed Field and Taylor Copyright ©2012, 2008 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All.

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Presentation on theme: "1 Scientific Farm Animal Production, 10 th ed Field and Taylor Copyright ©2012, 2008 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All."— Presentation transcript:

1 1 Scientific Farm Animal Production, 10 th ed Field and Taylor Copyright ©2012, 2008 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. CHAPTER 30 Sheep and Goat Breeds and Breeding

2 2 Scientific Farm Animal Production, 10 th ed Field and Taylor Copyright ©2012, 2008 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. Meat-Type Breeds

3 3 Scientific Farm Animal Production, 10 th ed Field and Taylor Copyright ©2012, 2008 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. Wool-Type and Dual- Purpose Breeds

4 4 Scientific Farm Animal Production, 10 th ed Field and Taylor Copyright ©2012, 2008 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. Categories of Sheep Breeds  Ewe breeds: Rambouillet, Debouillet, Merino, Corriedale, Targhee, Finnsheep, and Border Leicester  Ram breeds: Suffolk, Hampshire, Shropshire, Oxford, Southdown, Montadale, Cheviot  Dual-purpose breeds: Dorset, Columbia, Lincoln, Romney

5 5 Scientific Farm Animal Production, 10 th ed Field and Taylor Copyright ©2012, 2008 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved.

6 6 Scientific Farm Animal Production, 10 th ed Field and Taylor Copyright ©2012, 2008 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. Major Goat Breeds BreedMilk (lb)Fat (lb)Protein (lb) Alpine2,1006962 LaMancha1,8006655 Nubian1,7506652 Oberhasli1,8506452 Saanen1,9507157 Toggenburg1,7005747

7 7 Scientific Farm Animal Production, 10 th ed Field and Taylor Copyright ©2012, 2008 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. Boer Goats

8 8 Scientific Farm Animal Production, 10 th ed Field and Taylor Copyright ©2012, 2008 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. Angora Goats

9 9 Scientific Farm Animal Production, 10 th ed Field and Taylor Copyright ©2012, 2008 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. Reproductive Characteristics of Sheep and Goats CharacteristicSheepGoats Age at puberty: season and breed effects are large 5-12 months4-12 months Estrous cycle duration 16 days Length of estrus30 hours48 hours Gestation length: season and breed effects are large 147 days150 days

10 10 Scientific Farm Animal Production, 10 th ed Field and Taylor Copyright ©2012, 2008 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. Selection of Superior Rams

11 11 Scientific Farm Animal Production, 10 th ed Field and Taylor Copyright ©2012, 2008 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. Effects of Heterosis in Crossbred Lambs TraitPercent Heterosis Birth weight3 Weaning weight5 Post-weaning gain7 Survival to weaning10 Pounds of lamb weaned per exposed ewe 18

12 12 Scientific Farm Animal Production, 10 th ed Field and Taylor Copyright ©2012, 2008 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. Typical Australian Crossing System to Produce Prime Lambs

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