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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 rights reserved. CHAPTER 30 Sheep and Goat Breeds and Breeding
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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
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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
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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
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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.
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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
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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
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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
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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
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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
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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
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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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