Table 4 Indicators of slaughter yield of carcasses of broiler chickens of the
experimental group, which were fed with tilotsiklinvet, М±m; n=6
Indicator
Withdraw
al period
Second experimental
group (tilotsiklinvet)
Second control
group
Live weight before a slaughter, g
3 hours
2560,8±52,2**
2289,0±60,3
9 days
2673,0±47,0*
2393,8±34,3
Weight of semi-dressed carcass, g
3 hours
2358,3±52,8**
2093,8±49,8
9days
2466,5±51,8**
2184,8±58,5
Weight of dressed carcass, g
3 hours
2074,2±60,4**
1793,8±49,8
9days
2171,0±42,5*
1892,3±43,1
Slaughter yield, %
3 hours
80,5
78,4
9days
81,2
79,0
Note: * р≤0.001, ** р≤0.01, compared to the control
References: is calculated by authors according to the data [12]
Thus, a live weight of chicken broilers before a slaughter in the experimental
group (fed with pharmazin) at the beginning of the withdrawal period (in 3 hours after
the last feeding of antibiotic) exceeded the body weight of the bird in the first control
group by 7,5%. A live weight of broiler chickens before a slaughter in the experimental
group (fed with tilotsiklinvet) was by 11,9% higher than the body weight of the bird of
the second control group.
Live weight of broiler chickens before a slaughter in the first experimental group
at the end of the withdrawal period (6 days after the last antibiotic feeding) was by
10,1% higher than the weight of a poultry in the control group. Live weight of broiler
chickens before a slaughter in the second experimental group at day 9 was by 11,7%
higher than the one in the second control group. Data analysis shows that antibiotics
stimulate growth of a bird and this influences both, on a live weight and on a slaughter
yield.
It is known that semi-dressed carcasses are those, whichhave no stun, are bled out,
the intestine with cloaca, filled dewlap andoviduct (for females) are removed. Weight
of semi-dressed carcasses of broiler chickens of the first experimental group at the
beginning of the elimination period exceeded the weight of the carcasses of the first
control group by 15,1%, and the weight of the second experimental group was higher
than the indicator of the second control group by 12,6%.
In addition, the weight of semi-dressed carcasses of broiler chickens of the first
experimental group at the end of the withdrawal period exceeded the weight of the
carcasses of the first control group by 11,2%, and the weight the second experimental
group was higher than the weight of the carcasses of the second control group by
12,9%.
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