Abstract:
Studies were performed on
first generation meat hybrids, from the
Bălţată cu Negru Românească (BNR) dairy
cattle, into four experimental groups of five
animals /group, in relation to meat bulls
breeds from which the frozen semen
material used for cows artificial
insemination, respectively: Group E1-
Limousine (Li), E2 - Aberdeen Angus (AA),
E3 - Blue Blanch Belgian (BBB) and E4 -
Charolaise (CH). The hybrids obtained from
the experimental groups were observed in
terms of dynamic growth and development
through biometric measurements and
periodic weightings 3 months intervals until
12 months of age. Average Daily Gain
(ADG) recorded different variations in
report to age and breed: at six months old,
between 418.52 ± 60.97 g (Group E3 -BBB)
and 486.67 ± 108.66 g (Group E2 - AA), at
12 months old, between 997.22 g (Group E2
– AA) and 1311.11 g (Group E3 -BBB).
Slaughter rate at 12 months showed
variations in relation to breed and thermal
regime, so in hot regime the values ranged
between 56.62 % (BNR x AA) and 60.60 %
(BNR x BBB) and in cold regime (to 24
hours) between 55.68 % (BNR x AA) and
59.73 % (BNR x BBB). Carcasses
development indicators had values in most
cases in favor of BNR x AA hybrids than
BNR x BBB hybrids, with significant
differences (P ≤ 0.01) regarding the width
index (201.43 cm to 175.84 cm) and pulp
development index (129.27 cm to 110.64
cm). From results analysis it can be
concluded that in dangered local cattle, to be
abandoned because of productive reform or
not relevant point of view of milk
production can be used in first generation
for hybridization with meat breeds in
obtaining meat hybrids with morphological
features, slaughter rate and carcass structure from superior quality categories than the
maternal breed.
