CHAPTER 30 Sheep and Goat Breeds and Breeding

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

Meat-Type Breeds Scientific Farm Animal Production, 10 th ed Field and Taylor 2 Copyright

Wool-Type and Dual. Purpose Breeds Scientific Farm Animal Production, 10 th ed Field and Taylor 3 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 Scientific Farm Animal Production, 10 th ed Field and Taylor 4 Copyright © 2012, 2008 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 • All rights reserved.

Scientific Farm Animal Production, 10 th ed Field and Taylor 5 Copyright © 2012,

Major Goat Breeds Breed Milk (lb) Fat (lb) Protein (lb) Alpine 2, 100 69 62 La. Mancha 1, 800 66 55 Nubian 1, 750 66 52 Oberhasli 1, 850 64 52 Saanen 1, 950 71 57 Toggenburg 1, 700 57 47 Scientific Farm Animal Production, 10 th ed Field and Taylor 6 Copyright © 2012, 2008 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 • All rights reserved.

Boer Goats Scientific Farm Animal Production, 10 th ed Field and Taylor 7 Copyright

Angora Goats Scientific Farm Animal Production, 10 th ed Field and Taylor 8 Copyright

Reproductive Characteristics of Sheep and Goats Characteristic Sheep Goats Age at puberty: season and breed effects are large 5 -12 months 4 -12 months Estrous cycle duration 16 days Length of estrus 30 hours 48 hours Gestation length: season and breed effects are large 147 days 150 days Scientific Farm Animal Production, 10 th ed Field and Taylor 9 Copyright © 2012, 2008 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 • All rights reserved.

Selection of Superior Rams Scientific Farm Animal Production, 10 th ed Field and Taylor

Effects of Heterosis in Crossbred Lambs Trait Percent Heterosis Birth weight 3 Weaning weight 5 Post-weaning gain 7 Survival to weaning 10 Pounds of lamb weaned per exposed ewe 18 Scientific Farm Animal Production, 10 th ed Field and Taylor 11 Copyright © 2012, 2008 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 • All rights reserved.

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