Dairy sheep production research at the University of Wisconsin-Madison, USA -a review

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• 作者：David L Thomas ; Yves M Berger…
• 关键词：Dairy sheep ; East Friesian ; Grazing ; Lacaune ; Lactation physiology ; Nitrogen efficiency ; RDP ; RUP ; Supplementation
• 刊名：Journal of Animal Science and Biotechnology
• 出版年：2014
• 出版时间：December 2014
• 年：2014
• 卷：5
• 期：1
• 全文大小：251 KB
• 参考文献：1. Sakul, H, Boylan, WJ, Shrestha, JNB (1999) Animal model evaluation of dairy traits in US sheep breeds, their crosses and three synthetic populations. Small Ruminant Res 34: pp. 1-9 CrossRef
  2. Shrestha, JNB, Heaney, DP (2003) Review of Canadian, Outaouais and Rideau Arcott breeds of sheep. 1. Development and characterization. Small Ruminant Res 49: pp. 79-96 CrossRef
  3. Thomas, DL, Berger, YM, McKusick, BC (1998) Milk and lamb production of East Friesian-cross ewes in northwestern Wisconsin. Proc. 4th Great lakes Dairy Sheep Symp. University of Wisconsin-Madison, Dept. of Anim. Sci, Spooner, Wisconsin
  4. Othmane, MH, De La Fuente, LF, Carriedo, JA, San Primitivo, F (2002) Heritability and genetic correlations of test day milk yield and composition, individual laboratory cheese yield, and somatic cell count for dairy ewes. J Dairy Sci 85: pp. 2692-2698 CrossRef
  5. Thomas, DL, Berger, YM, Gottfredson, RG, Taylor, TA (2004) Comparison of East Friesian and Lacaune breeds for dairy sheep production in North America. Proc. 10th Great lakes Dairy Sheep Symp. University of Wisconsin-Madison, Dept. of Anim. Sci, Hudson, Wisconsin
  Sheep Milk Enquiry.
  6. Barillet, F (2007) Genetic improvement for dairy production in sheep and goats. Small Ruminant Res 70: pp. 60-75 CrossRef
  7. Ricordeau, G, Flamant, JC (1969) Croisements entre les races ovines Prealpes du Sud et Frisonne (Ostfriesisches Milchschaf). II. Reproduction, viabilite, croissance, conformation. Ann Zootech 18: pp. 131-149 CrossRef
  8. Katsaounis, N, Zygoyiannia, D (1986) The East Friesland sheep in Greece. Res Develop Agric 3: pp. 19-30
  9. Thomas, DL, Berger, YM, McKusick, BC (1999) Preliminary results: Survival of high-percentage East Friesian lambs. Proc. 5th Great lakes Dairy Sheep Symp. University of Wisconsin-Madison: Dept. of Anim. Sci. and University of Vermont, Center for Sustainable Agriculture, Brattleboro, Vermont
  10. Thomas, DL, Berger, YM, McKusick, BC (1999) 2000. East Friesian germplasm: effects on milk production, lamb growth, and lamb survival. Proc. American Soc. Anim. Sci. J Anim Sci 77: pp. 1-6
  11. Ferreira, VC, Thomas, DL, Rosa, GJ (2012) Survival in crossbred lambs: individual, maternal, heterosis, and breed effects. J Anim Sci 90: pp. 3
  12. McKusick, BC, Thomas, DL, Berger, YM (2001) Effects of weaning systems on commercial milk production and lamb growth of East Friesian dairy sheep. J Dairy Sci 84: pp. 1660-1668 CrossRef
  13. McKusick, BC, Thomas, DL, Romero, JE, Marnet, PG (2002) Effect of weaning system on milk composition and distribution of milk fat within the udder of East Friesian dairy ewes. J Dairy Sci 85: pp. 2521-2528 CrossRef
  14. Hernandez, MP, Robinson, JJ, Aitken, RP, Fraser, C (1986) The effect of dietary supplementation of protected fat on the yield and fat concentration of ewe’s milk and on lamb growth. Anim Prod 42: pp. 455
  15. Sklan, D (1992) A note on production responses of lactating ewes to calcium soaps of fatty acids. Anim Prod 55: pp. 288-291 CrossRef
  16. Caja, G, Bocquier, F (1998) Effects of nutrition on ewe’s milk quality. Cooperative FAO -CIHEAM Network on Sheep and Goats. Nutrition Subnetwork, Grignon, France
  17. Casals, R, Caja, G, Such, X, Torre, C, Calsamiglia, S (1999) Effects of calcium soaps and level of protein supplementation on lactational performance of dairy ewes. J Dairy Res 66: pp. 177-191 CrossRef
  18. McKusick, BC, Berger, YM, Thomas, DL (1999) Rumen-protected bypass fat for dairy ewe commercial milk production. Proc. 5th Great lakes Dairy Sheep Symp. University of Wisconsin-Madison: Dept. of Anim. Sci. and University of Vermont, Center for Sustainable Agriculture, Brattleboro, Vermont
  19. De Bie, LY, Berge, M, Thomas, DL (2000) The effect of three times a day milking at the beginni
• 刊物主题：Agriculture; Biotechnology; Food Science; Animal Genetics and Genomics; Animal Physiology;
• 出版者：BioMed Central
• ISSN：2049-1891

文摘

Commercial milking of sheep is a new agricultural industry in the United States starting approximately 30?yr ago. The industry is still small, but it is growing. The majority of the sheep milk is used in the production of specialty cheeses. The United States is the major importer of sheep milk cheeses with 50 to 60% of annual world exports coming to the United States during the past 20?yr. Therefore, there is considerable growth potential for the industry in the United States. The only dairy sheep research flock in North America is located at the Spooner Agricultural Research Station of the University of Wisconsin-Madison. The research program started in 1993 and has been multifaceted; dealing with several areas important to commercial dairy sheep farmers. The East Friesian and Lacaune dairy breeds were compared and introduced to the industry through the research program. Both dairy breeds produced significantly more milk than traditional meat-wool breeds found in the U.S., but the two breeds differed in their production traits. East Friesian-cross ewes produced more lambs and slightly more milk than Lacaune-cross ewes whereas Lacaune-cross ewes produced milk with a higher percentage of fat and protein than East Friesian-cross ewes. Lactation physiology studies have shown that ewes with active corpora lutea have increased milk yields, oxytocin release during milking is required to obtain normal fat percentages in the milk, large udder cisterns of dairy ewes can allow for increased milking intervals, and short daylengths during late pregnancy results in increased milk yield. In the nutrition area, legume-grass pastures and forages with a higher percentage of legume will result in increased milk production. Grazing ewes respond to additional supplementation with increased milk yield, but it is important to match the supplement to the quality of the grazing. Ewes on high quality legume-grass pastures that are high in rumen degradable protein respond with increased milk production to supplements high in energy and/or high in rumen undegraded protein.