Pakistan Journal of Nutrition
1680-5194
1994-7984
Asian Network for Scientific Information
10.3923/pjn.2008.81.84
Heydari
K.H.
Dabiri
N.
Fayazi
J.
Roshanfekr
H.
1
2008
7
1
This experiment was conducted to investigate the effect
of ionophores monensin and lasalocid on performance and carcass
characteristics in fattening Arabi lambs. Thirty fattening male lambs with
similar conditions (22.14±0.72 kg body weight) were included in this
experiment from day 90 until day 150. Three high concentrate diets
containing with 30 ppm monensin (M), 30 ppm lasalocid (L) and none
additive (Control = C) were offered to lambs in a completely random
design. The Body Live Weight (BLW), Average Daily Gain (ADG), Dry Matter
Intake (DMI) and Feed Conversion Ratio (FCR) of lambs were measured two
weeks interval until eight weeks. Carcass components were recorded at the
end of trial. Total ADG and final BLW of fattening lambs fed the diets
containing ionophores were significantly higher (p<0.05) than lambs fed
the control diet. DMI of the lambs fed diet containing monensin were
significantly lower (p<0.05) than other two groups. The same trend was
found for FCR, while the differences was significant (p<0.05) only
between M and C group lambs. Carcass characteristics was not affected by
treatment (p>0.05), but lambs fed diet containing lasalocid had greater
dressing (%) and boneless meat (%). It is concluded that the performance
and carcass characteristics were improved in diets containing ionophores.]]>