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REPLACEMENT LOCAL PLANT PROTEIN CONCENTRATE FOR IMPORTED ANIMAL AND PLANT PkOTEIN CONCENTRATES ON PERFORMANCE OF ISA-BROWN LAYER HENS | ||
| The Iraqi Journal of Agricultural Science | ||
| Article 1, Volume 38, Issue 6, 2007, Pages 28-42 | ||
| Author | ||
| Abstract | ||
| This experiment aimed to evaluate the effects of partial and complete replacement of imported animal and plant protein concentrates by locally produced plant protein concentrate on the performance traits of ISA-Brown layer hens. Ninety layer hens (age 24 w.) were randomly distributed on six treatments of 3 replicates each ( 6 hens/replicate). The treatments included : 1st control Tc1= 100% imported plant protein conc. 2nd control Tc2= 100% imported animal protein conc., T3 = 50% imported plant protein conc. + 50% imported animal protein conc.,T4= 50% imported plant protein conc. + 50% local plant protein conc. ,T5 = 50% imported animal protein conc. + 50% local plant protein conc. and T6= 100% local plant protein conc. Results indicated that no significant difference in live body weight between the different treatments were found during the different egg production periods. Weight gains were differed significantly (p<0.05) among egg production periods. Significant differences in egg production % among treatments were found in which T4 followed by Tc2 showed the highest H.D.% among the treatments . Egg production period (32-36 w.) showed the highest H.D.% among eggs periods. Significant increases were found in egg weight and egg mass of T3 , T4 , T5 and T6 as compared with Tc1 and Tc2 during egg production periods. There were significant differences in feed consumption among treatments during egg production periods.There were significant differences in feed conversion ratio (g.feed/egg) noticed among treatments. T3 gave the best feed efficiency during the whole production period. Egg production period( 28-32w.) showed the best feed efficiency (118.1 g.feed/egg) among egg production periods. No significant differences among the treatments and the production periods in egg shell thickness and Haugh Unit were found . However , asignificant difference in egg shell thickness among egg production periods was found. The first 4- weeks of egg production (24-28 w.) showed significant high yolk index value as compared with other production periods. Results of this experiment refer to the possibility of partial substitution (at a level of 50%) of the imported plant and animal protein concentrates by the locally produced plant protein concentrate in layer diets | ||
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