CALCIUM AND PHOSPHORUS RETENTION BY BROILER CHICKENS FED GROUNDNUT CAKE BASED-DIET SUPPLEMENTED WITH L-LYSINE AND DL- METHIONINE

Authors

  • Ogunwole, O. A. Agricultural Biochemistry and Nutrition Unit, Department of Animal Science, University of Ibadan, Ibadan, Nigeria.
  • Babatunde, O. O.
  • Faboyede, R. A.
  • Adedeji, B. S.
  • Jemiseye, F. O.

Keywords:

Amino acids, Broiler, Bone, Calcium, Chickens, Faecal, Phosphorus, Serum.

Abstract

Effect of supplementing groundnut cake (GNC) based-diets with L-lysine and DL-methionine on calcium and phosphorus retention in broiler chickens was evaluated in this study. In a completely randomized design, one-day-old Arbor Acre chicks (n=168) were randomly allotted to seven treatments each in triplicate of eight birds per replicate. Control birds (T1) were fed GNC based-diets without any supplementation while those on T2 and T3 had 0.2 and 0.4 % L-lysine, respectively. Birds on T4 and T5 had 0.2 and 0.4 % DL-methionine while diets of birds on T6 and T7 were supplemented with 0.2% L-lysine and 0.2% DL-methionine and 0.4% L-lysine and 0.4% DL-methionine, respectively. Faecal calcium of birds on treatment 7 (2.37%) was significantly higher (P<0.05) compared with those on T5 (2.16%). Birds on T7 also had higher (P<0.05) phosphorus (1.67%) than those on treatment 1 (1.46%). Tibia phosphorous of birds on control diet was similar (P>0.05) to those on treatments 2, 3, 5, 6 and 7 while the birds on T4 recorded significantly lower (P<0.05) tibia phosphorus. At the starter phase, birds on sole amino acid supplementation (T2, T3, T4 and T5) had lower but similar (P>0.05) sera calcium. At the finisher phase sera Ca and P of birds were similar (P>0.05). Correlation of feed and faecal calcium and phosphorus was positive and highly significant (p<0.01) at the starter phase which were conversely not observed among calcium and phosphorus levels in blood and tibia bone as well as in the serum alkaline phosphatase at the finisher phase. Supplementation of GNC based diets with both L-lysine and DL-methionine at 0.2% and 0.4%, respectively elevated especially the starter chicks sera as well as faecal calcium and phosphorus thereby also implying on bone strength.

Published

2017-06-30