|
|
|
|
Effects of feeding low protein diets with methionine
and lysine supplementation on the performance and nitrogen economy of
broilers |
|
Malomo, G.A.1, *Bolu, S.A.2
Olutade, S.G1 and Suleiman, Z.G.3
|
1Coordination of Technical Research Programme; 3Bureau
of Gender and Youth in Agriculture, Agricultural Research Council of
Nigeria, Abuja, Nigeria; 2Department of Animal production,
University of Ilorin. Ilorin, Nigeria
|
|
Abstract |
A study was conducted to
evaluate the effects of supplementation of low protein diets with
synthetic methionine and lysine on performance and N economy of
broilers. Chicks were allotted to corn-soy diets in a completely
randomized design for forty-two days. The diets were 22 and 20% of crude
protein (CP) with methionine + lysine content balance and, 22 and 20% CP
diets with 110% NRC recommendation of methionine and lysine. Feed
intake, daily weight gain, feed conversion ratio (FCR) and mortality
showed no significant (P>0.05) treatment effect. However, there was
significant improvement (P<0.05) in the performance of birds fed lower
(20%) CP diets with synthetic amino acid supplementation, which made it
to be at par with those on higher dietary protein (22% CP) level.
Similarly, dressing percentage and faecal N were significantly improved
(P<0.05) with methionine and lysine supplementation. Serum protein and
urea reduced slightly but significantly (P<0.05) with decreasing dietary
CP and with methionine and lysine supplementation of the diets.
Consequently, the observed trend in serum protein and urea in the
present study suggests improved in biological value of the 22% and 20%
CP diets with methionine and lysine supplementation. It was, therefore,
concluded that to achieve significant improvement in the performance
while maintaining considerable reduction in faecal nitrogen of broilers
fed CP diets as low as 20%, the diet should be supplemented with
methionine and lysine above the levels recommended.
|
Keywords:
Broilers; nitrogen
economy; faecal N; amino acid supplementation; performance |
|
To cite this article:
Malomo
GA,
SA Bolu, SG Olutade and ZG Suleiman, 2013.
Effects of feeding low protein diets with methionine
and lysine supplementation on the performance and nitrogen economy of
broilers.
Res.
Opin.
Anim. Vet. Sci., 3(9), 330-334. |
|
|