Effect of Dietary Choline and Methionine on Broiler Chicks Performance and Some Blood Parameters
Effect of Dietary Choline and Methionine on Broiler Chicks Performance and Some Blood Parameters
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Date
2015-04-01
Authors
Mansour, Bakheit
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Abstract
ABSTRACT
The experiment was conducted to determine the effect of Choline
chloride and/or methionine supplementation to diet adequate in all
nutrients on the performance of broiler chicks.
One hundred and twenty eight one day old unsexed broiler chicks
were used in the experiment. Chicks were kept for 4 days adaptation
period. Chicks were divided into four groups of 32 birds, 8 birds per
replicate. The birds were fed on four experimental diets; unsupplemented
diet with neither Choline chloride nor methionine (control), diet
supplemented with methionine (0.3%), diet supplemented with Choline
chloride (0.4%),and diet supplemented with both methionine (0.3%) and
Choline chloride (0.4%),all diets were kept Iso-nitrogenous and Isocaloric
according the NRC requirements for the poultry. in complete
randomized design with factorial arrangement. Feed and water were
provided ad libitum, feed intake and body weight were weekly recorded,
weight gain and feed conversion ratio (FCR) were calculated, the
experiment lasted for 6 weeks.
Eight birds from each dietary treatment were randomly selected,
weighed and slaughtered for determining carcass dressing percentage and
serum analysis.
The results of experiment indicated that, all dietary treatments
(Choline chloride, methionine and combination) have no effect on feed
intake, body weight gain and feed conversion ratio compared to control
diet. Moreover, they reported similar observation on dressing percentage,
\ protein efficiency and blood serum glucose.
However, the level 0.3% of methionine showed the highest
serum cholesterol (P<0.01) and total protein (P<0.01) content. Choline
chloride level resulted in a significant increase (P<0.05) on total lipids
and it decrease serum cholesterol. However, the interaction between
choline chloride and methionine resulted in a significant decrease on
serum total protein and cholesterol level