Haenlein G F
Department of Animal Science and Agricultural Biochemistry, University of Delaware, Newark 19717-1303, USA.
J Anim Sci. 1996 May;74(5):1173-81. doi: 10.2527/1996.7451173x.
Among the major classes of U.S. livestock, dairy goats have yet to achieve USDA statistical reporting of their numbers, amounts of milk produced and processed, and cheese and other products marketed. However, the USDA has published buck proofs of approximately 16,000 does annually from Dairy Herd Improvement Association (DHIA) records of the Alpine, LaMancha, Nubian, Oberhasli, Saanen and Toggenburg breeds, thereby encouraging genetic progress. This represents a 1% participation in DHIA of the estimated 1.5 million U.S. dairy goats. Annual breed registrations are led by Nubians (11,000), and the leading states in descending order are California, Texas, Ohio, New York, and Pennsylvania. Breed average milk yields range from 960 kg of milk for Saanen to 726 kg of milk for Oberhasli. Average milk contents range from 4.5% fat and 3.69% protein for Nubian to 3.3% fat and 2.98% protein for Toggenburg. Leading lactation records are 3,023 kg of milk (Toggenburg) and 174 kg of fat (Nubian). Total annual registrations are 45,000+ animals by 16,000+ member breeders. Estimated total U.S. goat milk commercial production is 24,000+ t, with half going into commercial farm goat cheese production of 640+ t. Recent years have seen significantly increased numbers of dairy goat research projects and publications from Oklahoma, Texas, California, Georgia, Alabama, Florida, Louisiana, New York, Connecticut, Delaware, and Massachusetts. Furthermore, annual national and international symposia, annual national goat cheese judging competitions and workshops, an active national goat research foundation, representation on the National Interstate Milk Shippers Committee and Mastitis Council, and formation of a national association and council for the development and promotion of dairy goat products indicate an evolution from former emphasis on purebred breed development to a focus on market development. The conclusion is that dairy goats are emerging as a necessary and recognized U.S. industry.
在美国主要的牲畜类别中,奶山羊的数量、产奶量及加工量、奶酪和其他上市产品的数量,尚未纳入美国农业部的统计报告。不过,美国农业部每年会根据奶业改进协会(DHIA)记录的阿尔卑斯、拉曼查、努比亚、奥伯哈施利、萨能和吐根堡等品种约16000只母羊的情况发布种公羊验证报告,从而推动了遗传进展。这在美国估计150万只奶山羊中占1%的DHIA参与率。年度品种注册数量以努比亚羊领先(11000只),排名靠前的州依次是加利福尼亚州、得克萨斯州、俄亥俄州、纽约州和宾夕法尼亚州。各品种的平均产奶量从萨能羊的960千克到奥伯哈施利羊的726千克不等。平均乳成分方面,努比亚羊的脂肪含量为4.5%、蛋白质含量为3.69%,吐根堡羊的脂肪含量为3.3%、蛋白质含量为2.98%。泌乳量领先记录为3023千克(吐根堡羊)和174千克脂肪(努比亚羊)。每年有超过16000名会员养殖户进行的总注册数量超过45000只动物。美国山羊奶的商业总产量估计超过24000吨,其中一半用于商业农场生产超过640吨的山羊奶酪。近年来,俄克拉何马州、得克萨斯州、加利福尼亚州、佐治亚州、亚拉巴马州、佛罗里达州、路易斯安那州、纽约州、康涅狄格州、特拉华州和马萨诸塞州的奶山羊研究项目和出版物数量显著增加。此外,年度国内和国际研讨会、年度全国山羊奶酪评判比赛和研讨会、活跃的全国山羊研究基金会、在全国州际牛奶托运人委员会和乳腺炎委员会中的代表权,以及成立全国奶山羊产品开发和推广协会及委员会,都表明已从前侧重于纯种繁育发展转变为注重市场开发。结论是,奶山羊正在成为美国一个必要且得到认可的产业。