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and is slightly lower in Lower and Middle
Casamance. The calving interval is 16 to 17 months in Middle and Upper Casamance and roughly 19 months in Lower Casamance with 80% of calving taking place in the last six months of the year. The abortion rate is 10 to 20%, which leaves an average calving rate
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breed of beef cattle developed on the
Caribbean Island of St. Croix was long thought to originate from crosses between N'Dama cattle, imported in the late 19th century, and Red Poll cattle, but it is actually an admixed breed between a European taurina (Red Poll) and zebu.
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of 56%. Calves are weaned around 12 months and castration, when it occurs, is around three years. Annual mortality rate is 12% overall, with 30% for calves under one year, 15% for one to two-year-olds, 5% for two to three-year-olds, and 2% for adults.
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362:"Trypanotolerance in N'Dama x Boran crosses under natural trypanosome challenge: effect of test-year environment, gender, and breed composition"
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Waaij, E.H. van der; Hanotte, Olivier H.; Arendonk, Johan A.M. van; Kemp, Stephen J.; Kennedy, D.; Gibson, John P.; Teale, A.J. (2019-05-03).
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has shown that the N'Dama is the most resistant breed. In
Nigeria, research has shown that N'Dama is up to 2-3x (or 25%) more resistant than
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68:, Fouta Longhorn, Fouta Malinke, Futa, Malinke, Mandingo (Liberia), and N'Dama Petite (Senegal). Originating in the
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infested areas of sub
Saharan Africa, especially in west and central Africa. International research conducted by
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413:"Population parameters for traits defining trypanotolerance in an F2 cross of N'Dama and Boran cattle"
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272:"Trypanotolerant livestock in the context of trypanosomiasis intervention strategies"
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247:"Trypanotolerant livestock in West & Central Africa - Volume 2. Country studies"
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56:. Other names for them include Boenca or Boyenca (Guinea-Bissau), Fouta Jallon,
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FAO study; The state of agricultural biodiversity in the livestock sector p99
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340:"F2-generation of N'Dama x Boran cross | Download Scientific Diagram"
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poses a considerable constraint on livestock agricultural development in
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This article is about breed of cattle. For other uses, see
112:-infested areas. They also show superior resistance to
182:has shown a similarity with crossbreeding N'Dama x
138:The age of first calving is 3.5 years in Upper
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72:highlands, they are also found in southern
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224:Oklahoma State University breed profile
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116:and the diseases they carry and to
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147:Trypanotolerance in N'Dama cattle
168:Democratic Republic of the Congo
206:Elsevier Health Sciences, 1991
108:, allowing them to be kept in
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429:10.1016/S0301-6226(03)00078-2
315:"500 - Internal server error"
41:An N'Dama herd in West Africa
417:Livestock Production Science
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372:. Ncbi.nlm.nih.gov: 87.
204:Cattle Genetic Resources
379:10.1186/1471-2156-13-87
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32:Ndama (disambiguation)
468:Agriculture in Africa
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202:Charles G. Hickman,
119:Haemonchus contortus
292:Post (2012-01-09).
360:USA (2019-05-06).
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104:. They are
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457:Categories
442:2019-10-11
346:2019-10-11
325:2019-05-23
300:2019-10-11
278:2019-10-11
257:2012-08-08
190:References
156:Tsetse fly
110:tsetse fly
82:the Gambia
274:. Fao.org
140:Casamance
59:Djallonké
398:23075408
389:3519672
164:Nigeria
127:Senepol
98:Nigeria
94:Liberia
74:Senegal
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166:, the
100:, and
70:Guinea
50:cattle
46:N'Dama
180:KALRO
172:Kenya
114:ticks
52:from
18:Ndama
394:PMID
208:ISBN
170:and
160:ILRI
125:The
86:Mali
433:hdl
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