PAPER TITLE :PERFORMANCE AND CORRELATION OF EGG QUALITY TRAITS OF DOMINANT BLACK AND BOVAN NERA LAYERS FED DIETS SUPPLEMENTED WITH PRASEODYMIUM

APPLIED TROPICAL AGRICULTURE | VOLUME 20 NUMBER 1 2015

Paper Details

  • Author(s) : Oluleye, F.O., Adu, O.A.* Koya, E.T. and Chineke, C.A.
  • Abstract:

The effects of supplemental Rare Earth Element (REE), praseodymium and breeds on the egg quality traits of two commercial layer breeds
(Dominant Black and Bovan Nera) were investigated in a twelve week experiment. Each of the breeds was placed on four dietary treatments of 40
chickens which were divided equally into 4 replicates, thus resulting to 160 birds per breed. Two diets (growers' and layers') were formulated to meet
the nutrient requirements of each phase of production. Each diet was divided into four (4) equal parts. A portion was designated the control diet (no
nd rd th supplemental praseodymium). The 2 , 3 , and 4 portions were supplemented with praseodymium at 50, 100 and 150ppm respectively. Each diet
was fed to 40 birds and the experiment arranged in a 2 x 4 factorial in a completely randomized design. At 32 week of age, forty (40) eggs collected
per treatment from each of the breeds were taken to laboratory for egg quality determination. Results showed that the correlations between the
internal and external qualities of the eggs were generally positive and moderately high with some exceptions. Significant (p < 0.05) relationship
existed between egg weight and other qualities. Eggs from Bovan Nera had higher shell thickness (0.37+0.00 mm), shell weight (5.84+0.04 g),
albumen height (7.25+0.07 mm), Haugh unit (84.88+0.41), and percentage shell weight (9.80+0.06) compared to those from Dominant Black.
The egg qualities were significantly influenced by supplementing the diet with praseodymium at 100ppm. Generally, the two layer breeds performed
well under the various treatments but Bovan Nera produced eggs with better quality. Dominant Black had the better feed conversion ratio
(2.98+0.00) and hen-day production (85.56+0.37 %) while the 50 ppm inclusion level of praseodymium had the best feed conversion ratio
(2.98+0.01).