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 | Acesso ao texto completo restrito à biblioteca da Embrapa Caprinos e Ovinos. Para informações adicionais entre em contato com cnpc.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
21/09/2017 |
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Data da última atualização: |
28/12/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
HAILE, A.; HILALI, M.; HASSEN, H.; REKIK, M.; LOBO, R. N. B.; TIBBO, M.; MWACHARO, J. M.; RISCHKOWSKY, B. |
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Afiliação: |
International Center for Agricultural Research in the Dry Areas (ICARDA) - Addis Ababa, Ethiopia; ICARDA - Amman, Jordan; ICARDA - Addis Ababa, Ethiopia; ICARDA - Amman, Jordan; RAIMUNDO NONATO BRAGA LOBO, CNPC; FAO - Regional Office for the Near East and North Africa, Dokki, Cairo, Egypt; ICARDA - Addis Ababa, Ethiopia; ICARDA - Amman, Jordan. |
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Título: |
Evaluation of Awassi sheep genotypes for growth, milk production and milk composition. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Journal of Experimental Biology and Agricultural Sciences, v. 4, n. 1, p. S68-S75, Feb. 2017. |
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DOI: |
http://dx.doi.org/10.18006/2017.5(Spl-1-SAFSAW).S68.S75 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: We evaluated growth, milk production and composition of Awassi genotypes based on 9 years data collected from the International Center for Agricultural Research in the Dry Areas (ICARDA) flock kept in Tal Hadya station, Syria (now moved to Terbol station, Lebanon). Performances of the pure genotypes (Syrian and Turkish Awassi) and the resulting crosses were compared. Growth performances did not differ among the genetic groups except for weaning weight, for which the Turkish Awassi was lighter than the Syrian Awassi and all its crosses; the 75% Syrian genotype being the heaviest (19.54±0.43 kg). Genetic groups did not differ (p>0.05) for both lactation length (overall mean 100.39±1.20 days) and lactation milk yield (overall mean 91.2±2.50 kg). Lactation yields of milk constituents (fat, protein, lactose, total solids and solids-not-fat) were, however, higher for the 75% Syrian crosses compared to the other crosses as well as to the pure Awassi sheep, except for lactation protein yield. The performances of Turkish Awassi were not superior to those of the Syrian genotype for all the traits considered under the environmental conditions of Syria. It is concluded that the Turkish Awassi should not be used as an improver breed for the Syrian genotype. The performance of the ICARDA maintained Awassi flock has on average been better compared to those of other farms in the region. Improved rams produced from the breeding program could therefore serve as improver for flocks maintained in countries of the region, necessitating the development of appropriate delivery systems of improved genetics. MenosAbstract: We evaluated growth, milk production and composition of Awassi genotypes based on 9 years data collected from the International Center for Agricultural Research in the Dry Areas (ICARDA) flock kept in Tal Hadya station, Syria (now moved to Terbol station, Lebanon). Performances of the pure genotypes (Syrian and Turkish Awassi) and the resulting crosses were compared. Growth performances did not differ among the genetic groups except for weaning weight, for which the Turkish Awassi was lighter than the Syrian Awassi and all its crosses; the 75% Syrian genotype being the heaviest (19.54±0.43 kg). Genetic groups did not differ (p>0.05) for both lactation length (overall mean 100.39±1.20 days) and lactation milk yield (overall mean 91.2±2.50 kg). Lactation yields of milk constituents (fat, protein, lactose, total solids and solids-not-fat) were, however, higher for the 75% Syrian crosses compared to the other crosses as well as to the pure Awassi sheep, except for lactation protein yield. The performances of Turkish Awassi were not superior to those of the Syrian genotype for all the traits considered under the environmental conditions of Syria. It is concluded that the Turkish Awassi should not be used as an improver breed for the Syrian genotype. The performance of the ICARDA maintained Awassi flock has on average been better compared to those of other farms in the region. Improved rams produced from the breeding program could therefore serve as improver for flocks m... Mostrar Tudo |
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Palavras-Chave: |
Awassi genotype; Growth; Milk traits. |
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Thesaurus Nal: |
Animal breeding; Animal genetics; genetic improvement; Milk production; Reproductive performance; Sheep. |
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Categoria do assunto: |
G Melhoramento Genético |
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Marc: |
null
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Embrapa Caprinos e Ovinos (CNPC) |
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