FIELD TESTING OF FATTENING ABILITY AND CARCASS VALUE IN BREEDING RAMS OF CHAROLLAIS BREED WITH POSSIBILITIES OF ITS APPLICATION IN ARID REGIONS
M. SHAKER MOMANI, I. ŠÁDA, F. VOHRADSKÝ
Abstract
The aim of the experiment was testing of the fattening
ability and carcass value indicators of the ram lambs descending from three
sires in pen-fold grazing system. The experiment was performed with the ram
lambs as a model with the anticipation to be exploited in arid regions of the
Near East where there is an endevour to intensify the mutton sheep breeds rearing.
The average age and the average live weight of the ram lambs at the initiation
of the experiment was 66.60 days and 20.73 kg respectively. After 68 days of
the experiment when 4 ram lambs after each sire were taken for control slaughter
, their average age was 134.60 days and their average live weight was 39.38
kg. The selection was within the range ± I (standard deviation) from the average
live weight.
Total weight gain and average daily weight gain of the ram lambs after the individual
sires was as follows: Ram lambs of the sire No.l. 19.90 ± 0.58 kg and 293 ±
8.62 g, ram lambs of the sire No. 3. 18.13 ± 1.01 kg and 267 ±14.08 g, ram lambs
of the sire No. 5. 17.45 ± 2.24 kg and 257 ± 32.95 g respectively, however no
significant differences between the sires were found. The highest dressing percentage
of the fresh carcass (50.15 ± 1.71 %) had the offspring of the sire No. 5.,
the lowest value (48.65 ± 0.55 %) had the ram lambs of the sire No. 1, however
the differences were insignificant. From the results achieved it appears that
statistically significant differences (p < 0.5) showed the weight of flank
of the carcass in the ram lambs of the sires No. 3. and No. 5. When evaluating
the percentage share of the individual parts of the ram lamb carcass the significant
differences of the share of neck and flank percentage were found (p <().()
5)
Key words:
Charollais, testing, ram lambs, fattening ability,
carcass value.