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1.
J Anim Breed Genet ; 136(5): 329-338, 2019 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-30873687

RESUMO

Animal breeding in India has a long and chequered history. High pressure on agricultural land and increasing human population opened a new opportunity for the livestock and poultry sector as a promising food industry. Productivity of livestock in India is low due to less coverage of livestock under structured breeding programmes, inadequate nutrition and its entanglement with several socio-economic issues. A bottom-up approach to breeding policy formulation addressing local needs is required with assured flow of investments. Cattle slaughter is banned in India; hence, a legal policy to curb widespread indiscriminate mating is required which may incur substantial financial and infrastructural burdens for castration of stray males and strengthening of cow rehabilitation centres. Genetic evaluation of indigenous cattle with progeny testing (PT) requires substantial financial support, without affecting the already existing PT for exotic cattle breeds used in the local cross-breeding programmes and PT of new genotypes obtained from crosses of exotic and local breeds of cattle and for purebred buffaloes. Small ruminants need special attention due to their socio-economic importance in rural and often highly disadvantaged communities and because they are the second most important meat-producing species after poultry. Genetic improvement of small ruminants should be accompanied by attention to shrinking grazing resources which would require strong political will together with financial support. The outreach of breeding programmes for small ruminants is currently limited; there is also a lack of linkage between the market and producers that discourages farmers from adopting clear breeding objectives like improvement in growth rate, as animals are seldom sold on weight basis. Apart from government agencies, involvement of private sector, non-government organizations, local co-operatives, self-help groups and self-sustainable community-based breeding programmes can strengthen market linkages. Strengthening of the existing infrastructure along with technical input and skilled manpower is essential for achieving the breeding objectives.


Assuntos
Criação de Animais Domésticos , Cruzamento , Gado , Criação de Animais Domésticos/economia , Criação de Animais Domésticos/legislação & jurisprudência , Animais , Índia , Gado/classificação , Gado/genética , Seleção Genética , Fatores Socioeconômicos
2.
Biol Reprod ; 66(6): 1869-74, 2002 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-12021074

RESUMO

Recent discoveries that high prolificacy in sheep carrying the Booroola gene (FecB) is the result of a mutation in the BMPIB receptor and high prolificacy in Inverdale sheep (FecX(I)) is the result of a mutation in the BMP15 oocyte-derived growth factor gene have allowed direct marker tests to be developed for FecB and FecX(I). These tests were carried out in seven strains of sheep (Javanese, Thoka, Woodlands, Olkuska, Lacaune, Belclare, and Cambridge) in which inheritance patterns have suggested the presence of major genes affecting prolificacy and in the prolific Garole sheep of India, which have been proposed as the ancestor of Australian Booroola Merinos. The FecB mutation was found in the Garole and Javanese sheep but not in Thoka, Woodlands, Olkuska, Lacaune, Belclare, and Cambridge sheep. None of the sheep tested had the FecX(I) mutation. These findings present strong evidence to support historical records that the Booroola gene was introduced into Australian flocks from Garole (Bengal) sheep in the late 18th century. It is unknown whether Javanese Thin-tailed sheep acquired the Booroola gene directly from Garole sheep from India or via Merinos from Australia. The DNA mutation test for FecB will enable breeding plans to be developed that allow the most effective use of this gene in Garole and Javanese Thin-tailed sheep and their crosses.


Assuntos
DNA/análise , Proteínas de Escherichia coli/genética , Bombas de Íon/genética , Mutação , Ovulação/genética , Reprodução/genética , Ovinos/genética , Animais , Austrália , Feminino , Genótipo , Índia , Tamanho da Ninhada de Vivíparos/genética , Polimorfismo de Fragmento de Restrição , Polimorfismo Conformacional de Fita Simples , Especificidade da Espécie
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