No single production indication entirely
demonstrates the economic output of a broiler
flock. Researchers, therefore, suggested pooling
of the fractional influence of the major
production parameters in an index to compare
the performance of different flocks or the birds
assigned to different treatments (Lup et al., 2010;
Samarakoon and Samarasinghe, 2012). The PEI
created by Euribrid (1994) calculated based on
final body weight, FCR and mortality. The
calculated index for the treated birds with 1
g/kg dietary supplementation of bio choline
was greater than the index calculated for the
control birds. The trace advantages of the diets
supplemented with 1 g/kg bio choline as
increased weight gain and improved FCR in 1 to
42 days of age and, in particular, lower mortality
rate accumulated in the index and suggested bio
choline as a lipotropic feed additive of economic
interest.
Decreased liver lipid concomitant with
increased abdominal fat in the current study
support the results reported by Cengiz et al.
(2012) who observed efficient carbohydrate and
lipid metabolism by incorporating lipotropic
agents into broiler diets. Biotin and choline play
an essential role in the transportation of lipids
from liver toward peripheral tissues and organs
in the form of lipoproteins (Quarantelli et al.,
2007). Rama Rao et al. (2001) observed choline
supplementation of broiler breeder’s diets
reduced liver fat, the results which confirmed by
Waldroup et al. (2006) who also showed choline
deficiency in quails increased liver fat and
supplementing choline into quail diet decreased
liver fat percentage. Zhai et al. (2013) in laying