IGEVET   21075
INSTITUTO DE GENETICA VETERINARIA "ING. FERNANDO NOEL DULOUT"
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Rabbit Genetics
Autor/es:
ANTONINI, A.G.
Lugar:
Córdoba
Reunión:
Congreso; IV Congreso de Cunicultura de las Américas; 2010
Institución organizadora:
World Rabbit Association
Resumen:
Although the origin of the rabbit is unknown, some researchers argue that it comes from
Central Asia and others consider that it possibly originated in Africa. All claim that its
migration to the coastal zone of Spain allowed it to find a suitable environment for their
development and reproduction due to the characteristics of the climate, soil suitability
for burrow caves construction and a smaller number of predatory species (Camps, 1994,
1997, Gibb, 1990). The domestication of the rabbit began late compared with most of
the species of zootechnical interest (cattle, sheep, pigs, birds, etc); controlled breeding
began at the end of the middle ages when describing the first races (Morton, 2002).
Early 19th century Europe, Australia and New Zealand the stage of breeding rabbits
began in cages. Systematic breeding in our country began in the middle of last century
with the introduction of angora rabbits, such exploitation declined rapidly and was
replaced by breeds of meat rabbits. There are various races defined by morphological
characters (coat color, ears, etc.) and weight (small, medium and large), many of them
originating from crosses between race Neozelandic, Californian, Chinchilla, etc. or
these races with wild rabbits. Characters to select related to meat production can be
considered from at least four ways, according to productive or reproductive stadium for
both sexes. This allows us to group them into characters that impact on fertility,
prolificity, survival and weight and study their relationships and interactions (Antonini,
2007). Most selection plans have been focused on the prolificity and, indirectly, with
low pressure resulting, on fertility (Piles et al., 2003; Antonini et al, 2009). Some
characters, as weaning litter size, are associated directly both to total born litter size as
to alive born litter size (Prayaga et al., 2002), in such a way that correlated response can
be expected. Characters associated with fitness (fertility, prolificity, survival) even those
not included in breeding programs are subject to some degree of selection pressure since
the animals to be retained on the farm must be left, at least, a viable offspring.; controlled breeding
began at the end of the middle ages when describing the first races (Morton, 2002).
Early 19th century Europe, Australia and New Zealand the stage of breeding rabbits
began in cages. Systematic breeding in our country began in the middle of last century
with the introduction of angora rabbits, such exploitation declined rapidly and was
replaced by breeds of meat rabbits. There are various races defined by morphological
characters (coat color, ears, etc.) and weight (small, medium and large), many of them
originating from crosses between race Neozelandic, Californian, Chinchilla, etc. or
these races with wild rabbits. Characters to select related to meat production can be
considered from at least four ways, according to productive or reproductive stadium for
both sexes. This allows us to group them into characters that impact on fertility,
prolificity, survival and weight and study their relationships and interactions (Antonini,
2007). Most selection plans have been focused on the prolificity and, indirectly, with
low pressure resulting, on fertility (Piles et al., 2003; Antonini et al, 2009). Some
characters, as weaning litter size, are associated directly both to total born litter size as
to alive born litter size (Prayaga et al., 2002), in such a way that correlated response can
be expected. Characters associated with fitness (fertility, prolificity, survival) even those
not included in breeding programs are subject to some degree of selection pressure since
the animals to be retained on the farm must be left, at least, a viable offspring., according to productive or reproductive stadium for
both sexes. This allows us to group them into characters that impact on fertility,
prolificity, survival and weight and study their relationships and interactions (Antonini,
2007). Most selection plans have been focused on the prolificity and, indirectly, with
low pressure resulting, on fertility (Piles et al., 2003; Antonini et al, 2009). Some
characters, as weaning litter size, are associated directly both to total born litter size as
to alive born litter size (Prayaga et al., 2002), in such a way that correlated response can
be expected. Characters associated with fitness (fertility, prolificity, survival) even those
not included in breeding programs are subject to some degree of selection pressure since
the animals to be retained on the farm must be left, at least, a viable offspring., indirectly, with
low pressure resulting, on fertility (Piles et al., 2003; Antonini et al, 2009). Some
characters, as weaning litter size, are associated directly both to total born litter size as
to alive born litter size (Prayaga et al., 2002), in such a way that correlated response can
be expected. Characters associated with fitness (fertility, prolificity, survival) even those
not included in breeding programs are subject to some degree of selection pressure since
the animals to be retained on the farm must be left, at least, a viable offspring.