2020
DOI: 10.21608/mjapfp.2020.172125
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Effect of Adding Dry Yeast or Aspergillus Awamori as Natural Antioxidants to Diets Containing Oxidized Palm Oil on the Performance of Gimmizah Laying Hens

Abstract: In this study, one hundred and eighty (180), 28 weeks old Gimmizah laying hens were used to study the effects of adding a probiotic (dry yeast or Aspergillus awamori) as natural antioxidant agents to diets containing oxidized palm oil on the productive performance, egg quality traits, some blood components, economic efficiency and relative economic efficiency of Gimmizah laying hens. Hens were distributed at random into 6 similar treatment groups. Each treatment group was divided into 3 replicates of 10 layers… Show more

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Cited by 1 publication
(3 citation statements)
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“…Supplementation with Aspergillus niger improved egg production in laying hens compared with the Control and Positive Control groups. This result is in accordance with those of previous studies where supplementing probiotics mixes containing Aspergillus oryzae improved egg production in laying hens [ 18 , 23 , 24 , 25 , 26 , 27 ]. In the current study, improved egg production in the Probiotic group may have been due to an increase in feed efficiency, which may have been primarily induced by the production of enzymes such as cellulase, xylanase, α-amylase, proteases, and α-galactosidase [ 17 , 18 ].…”
Section: Discussionsupporting
confidence: 93%
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“…Supplementation with Aspergillus niger improved egg production in laying hens compared with the Control and Positive Control groups. This result is in accordance with those of previous studies where supplementing probiotics mixes containing Aspergillus oryzae improved egg production in laying hens [ 18 , 23 , 24 , 25 , 26 , 27 ]. In the current study, improved egg production in the Probiotic group may have been due to an increase in feed efficiency, which may have been primarily induced by the production of enzymes such as cellulase, xylanase, α-amylase, proteases, and α-galactosidase [ 17 , 18 ].…”
Section: Discussionsupporting
confidence: 93%
“…This result is in agreement with those of previous studies, reporting that supplementation of probiotics did not produce significant differences in FI and FCR [ 23 ]. In contrast, others observed significantly decreased FI and FCR with the supplementation of probiotic Aspergillus awamori or Aspergillus oryzae [ 18 , 24 , 25 , 26 ]. In the present study, the reduced FI in laying hens fed a diet supplemented with antibiotics (Positive Control) may have caused the lower egg production in that group.…”
Section: Discussionmentioning
confidence: 99%
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