Palm Oil Supplementation Research Articles

Reversing gingival symptoms of vitamin A deficiency by Red palm oil supplementation.

Reversing gingival symptoms of vitamin A deficiency by Red palm oil supplementation.

Aqueous extract of Alstonia boonei De Wild (Apocynaceae) alleviates bone metabolism disorders induced by oxidised palm oil and sucrose supplementation in rats

Aqueous extract of Alstonia boonei De Wild (Apocynaceae) alleviates bone metabolism disorders induced by oxidised palm oil and sucrose supplementation in rats

Unusual vitamin E profile in the oil of a wild African oil palm tree (Elaeis guineensis Jacq.) enhances oxidative stability of provitamin A.

The African oil palm (Elaeis guineensis Jacq.) is the predominant oil crop in the world. In addition to triacylglycerols, crude palm oil (CPO) extracted from the mesocarp of the fruits, contains high amounts of provitamin A (carotenes) and vitamin E (tocochromanols). Because of their unsaturated nature, the carotenes are prone to oxidation and therefore are in part limiting for the shelf life of CPO. A tree with unusual toochromanol composition was identified by HPLC screening of the mesocarp of wild trees. Polymorphisms in a candidate gene were identified by DNA sequencing. The candidate protein was heterologously expressed in Escherichia coli coli and Arabidopsis thaliana to test for enzyme activity. Oxidative stability of the CPO was studied by following carotene degradation over time. In the present study, a wild Oil Palm tree (C59) from Cameroon was identified that lacks α-tocopherol and α-tocotrienol and instead accumulates the respective γ forms, suggesting that the activity of γ-tocopherol methyltransferase (VTE4) was affected. Sequencing of the VTE4 locus in the genome of plant C59 identified a G/C polymorphism that causes the exchange of a highly conserved tryptophan at position 290 with serine. The W290S exchange renders the VTE4 enzyme inactive, as shown after expression in Escherichia coli and Arabidopsis thaliana. The oxidative stability of carotenes in the mesocarp of the wild palm C59 was enhanced compared with control accessions. Furthermore, supplementation of commercial palm oil with different tocochromanols showed that γ-tocotrienol exerts a stronger effect during the protection of carotenes against oxidation than α-tocotrienol. Therefore, the introduction of the high γ-tocotrienol trait into elite breeding lines represents a potent strategy to protect carotenes against oxidation and extend the shelf life of CPO, hence allowing the development of a value added high-carotene CPO to be used to fight against vitamin A deficiency.

Effects of dietary palm oil on nutritional indices of Diatraea saccharalis (Lepidoptera: Crambidae) for Cotesia flavipes (Hymenoptera: Braconidae) production

Cotesia flavipes parasitizes Diatraea saccharalis, a pest that causes major losses to sugarcane production. The mass production of C. flavipes and its subsequent release onto sugarcane is one form of biological control of D. saccharalis. An essential factor for successfully fighting this pest is the development of host diets that can increase the efficiency of C. flavipes production. Palm oil contains saturated fatty acids, unsaturated fatty acids, and polyunsaturated linoleic acid. However, little is known about the effects of palm oil on C. flavipes production in the laboratory. Different concentrations of palm oil were added to the D. saccharalis diet and its nutritional indices were analyzed. Subsequently, the production and sex ratio of C. flavipes were determined. Our results indicated that the addition of higher palm oil concentrations to an artificial diet generated a high relative consumption rate (RCR) in D. saccharalis, and consequently a high relative metabolic rate (RMR), which resulted in a lower production of the parasitoid. In contrast, the lowest palm oil concentration in the artificial diet generated a low RMR and resulted in high-efficiency conversion of ingested food (ECI), enabling D. saccharalis to yield more C. flavipes. This suggests that palm oil influences the quantity of D. saccharalis ingested, which determines the number of C. flavipes that will be generated. In this study, supplementation of a D. saccharalis diet with 0.25% palm oil increased the production of C. flavipes. Therefore, this level of palm oil supplementation can aid in the production of C. flavipes on a laboratory-scale. Further research, including increasing the number of parasitoids, must be performed to mass-produce the augmentative releases of C. flavipes to manage D. saccharalis.

Effect of Honey, Palm Oil and NPK Fertilizer on the Growth of Oyster Mushrooms Cultivated on Sawdust

The study was carried out to determine the effect of honey, palm oil and NPK fertilizer on the growth of Pleurotus pulmonarius (Fr.) Quel. and Pleurotus ostreatus (Jack.) Kumm. on Celtis zenkeri Engl. sawdust. Composted sawdust was supplemented with honey, palm oil and NPK fertilizer at 0%, 2%, 4%, 6% and 8% on the dry weight basis and inoculated with 5% spawn. The substrate amended with 4% palm oil was fully colonized by Pleurotus ostreatus and P. pulmonarius after 26.0±2.1 and 32.2±1.3 days, respectively. The mushroom took shorter time (43 days) for primordial emergence at 6% palm oil. Average of 55 fruitbodies of P. ostreatus was harvested from 4% palm oil supplemented sawdust. The best mushroom yield was recorded from 8% palm oil (278.5 ±5.0 g) and 8% honey (270.1±2.7 g). The highest biological efficiency was observed at 8 % palm oil (77.36±1.5 %) and 8 % honey (75.03±2.5 %) for P. ostreatus. The two mushrooms species performed significantly (p=0.05) with palm oil and honey supplementation. The best performance was observed at 6% and 8% supplementation with palm oil and honey. The research has shown that supplementation of sawdust substrate with honey and palm oil at 4 - 8% can be a good formulation for commercial cultivation of oyster mushrooms.

Effects of dietary palm oil supplementation on ruminal degradation and apparent digestibility of nutrients in sheep.

The aim of this study was to evaluate the effects of the inclusion of palm oil on the ruminal environment and nutrient digestibility of sheep diets. Twenty rumen-cannulated sheep were kept in individual stalls equipped with feeding and drinking troughs The animals were fed five diets based on Elephant grass (Pennisetum purpureum Schum. cv. Roxo) silage and supplemented with 0, 25, 50, 75, or 100 g kg-1 of palm oil (based on total DM). The Elephant grass was harvested at 90 days of regrowth and the concentrate was based on ground corn grain, soybean meal and mineral mix (20 g kg-1 DM), offered to the sheep at a ratio of 1.5 g kg-1d-1 of body weight (restricted intake) to maintain a forage-to-concentrate ratio of 1:1, based on DM. There were no differences (P = 0.324) in ruminal disappearance and degradability parameters with up to 75 g of oil per kg of DM. Organic matter showed a linear reduction in apparent digestibility, while ether extract increased linearly. Palm oil affected the digestibility and nutritional parameters in ruminant diets.

Effects of dietary palm oil supplementation on ruminal degradation and apparent digestibility of nutrients in sheep

Effects of dietary palm oil supplementation on ruminal degradation and apparent digestibility of nutrients in sheep

Hematological and Performance Parameters Trend in Steers and Heifers in Feed Lot and Supplemented with Palm Oil (Elaeis guineensis Jack)

This study compares the daily weight gain (ADG) and the hematological profile of cattle in feed lot and supplemented with palm oil (POil). Overall, 20 male and 24 female Holstein-Cebu (5/8-3/8) cattle with an average weight of 249±43 kg were used. Three groups of eight animals each were formed with females, which were housed and received 0, 2, and 4% POil in the diet (FSWO, FS2O, FS4O). With males, only two groups were formed, one group that kept grazing and received 2% POil (MG2O, n=8) and one group stabled and received 4% POil (MS4O, n=12). Peripheral blood was obtained to determine the hematocrit (HCT), plasma protein concentration (TPP, g/dL), and eosinophil count (EOS), and a complete blood sample was processed in an automatic analyzer to determine the erythron and platelet formula. Analysis of repeated measures over time was performed. Stabled steers showed the highest ADG (1.5kg/d), whereas females received 2 or 4% oil had similar ADG levels (1.3 to 1.4kg/d) than grazing steers. At the first sampling, EOS counts were 1.5 x 103 cells/µL of blood, but they were reduced to 0.23 x 103 cells/µL of blood at the end of the study. The lowest HCT was obtained in grazing steers (32.8%). It is concluded that in stabled steers, the red formula is improved, and the EOS count reduced. Palm oil supplementation generated the highest daily weight gain in stabled steers.

Effect of palm oil supplementation level on in vitro ruminal fermentability

Palm oil is an abundant source of oil in Indonesia and some other tropical countries. This research aimed to investigate the effect of palm oil supplementation levels on in vitro rumen fermentability by integrating data from various related studies. The data used were 40 data points from 13 studies which reported different levels of palm oil supplementation on in vitro rumen fermentability and nutrient digestibility. Data were tabulated, uniformed for the unit in each parameter, then analyzed using a linear regression method by employing SPSS software version 20. The results showed that palm oil supplementation significantly (P<0.05) increased bacterial population and isobutyrate proportion, while reduced protozoa population, and tended to reduce total volatile fatty acids (P<0.1). Supplementation of palm oil did not affect dry mater digestibility, organic matter digestibility, methane emission, pH, total gas, ammonia, acetate proportion, propionate, butyrate, valerate and isovalerate. It can be concluded that palm oil supplementation modifies some parameters of in vitro rumen fermentation.

Effect of different unsaturated fatty acids sources on in-vitro fermentability and digestibility of ration in dairy cattle

Supplementation of oil rich in unsaturated fatty acids (FAs) such as canola, soybean, and palm oils improved the quality of milk fatty acids. However, the unprotected unsaturated oil might impair rumen fermentation, feed, and fiber digestibility. A study was conducted to determine the best type of oil supplementation (factor A) including canola (A1), soybean (A2), or palm (A3) and level oil supplementation (factor B) including B0 = 0%, B1 = 1%, B2 = 2% or B3 = 3%) on the in-vitro feed fermentation and digestibility. The study used a 3 x 4 factorial block design. Two-stages were used to measure the pH, ammonia (NH3), volatile fatty acids (VFAs), protozoal number, dry matter (DMD), organic matter (OMD), neutral detergent fiber (NDFD), and acid detergent fiber (ADFD) digestibility. The results showed that oil type did not significantly influence the fermentability (pH, NH3, VFAs, and protozoa) and feed's digestibility (DMD, OMD, NDFD, and ADFD) but oil level influence the fermentability and digestibility significantly. In addition, an increase above 1% in oil levels reduced protein fermentability, protozoal number, DMD, and OMD, but increased VFA. It is concluded that the addition of unprotected canola, soybean, or palm oil in dairy cattle ration could be applied in a concentration not more than 1%.

Coconut Oil and Palm Oil Supplementation, as Agents of Methane Reducing in Goat Feed on Meat Quality

This research was conducted to examine feed containing coconut oil and palm oil on the quality of goat meat. Used as many as 20 goats aged + 1 year. Feed was given with a formulation of 60:40% forage and concentrates with a composition according based on needs of goats. This experiment used a CRD with 5 treatments and four replications. The treatments were R0: basal feed; R1 was basal feed added 0.5 mL of coconut oil; R2 was basal feed added 1 mL of coconut oil, R3 was basal feed added 0.5 mL of palm oil and R4 was basal feed added 1 mL of palm oil. The Animals rearing was carried out for 60 days and followed by slaughter of cattle to measure the quality of the meat. The variables measured were pH, WHC, cooking loss, water content, crude protein, crude fat. The data obtained were analyzed by ANOVA. The results shof the meat gave no significant difference (P&gt;0.05). Conclusion that supplementation of coconut oil and palm oil at the level until 1 mL can be used in goat feed.

Effects of palm oil supplementation and fibrolytic enzymes in high forage diets on growth, carcass characteristics and fatty acid profiles of lambs

This study investigated the effects of palm oil and fibrolytic enzyme supplementation in high forage diets on growth, carcass characteristics and fatty acid composition of lambs. Forty South African Mutton Merino ram lambs were randomly assigned to four treatment groups (n = 10 lambs/ treatment) and fed a basal total mixed ration (TMR). The treatments were: TMR diet with Megalac as bypass oil (control); TMR diet supplemented with 3% palm oil; TMR diet with cellulase and xylanase enzymes and TMR diet supplemented with 3% palm oil and cellulase and xylanase enzymes. The lambs were slaughtered at a target weight of about 42 kg. Palm oil supplementation resulted in a longer feeding period (P < 0.05) and lower dressing percentage (P < 0.01), but the carcasses had higher meat yield (P < 0.01) and lower fat content (P < 0.05) compared to the other treatment groups. Additionally, palm oil supplementation increased the proportion of C18:0 (P < 0.05) while decreasing (P < 0.05) the proportion of C14:0 (P < 0.05) and C16:0 (P < 0.05) in fat depots, which may be beneficial for human health. The fibrolytic enzyme treatment had minimal effects on growth, carcass characteristics, meat quality and fatty acid composition of lambs. The interaction effect of palm oil and fibrolytic enzymes had positive effects on the UFA: SFA ratio due to an increase (P < 0.05) in C20:3n6 and C20:4n6 and a reduction (P < 0.05) in saturated fatty acids. The results suggest that methane mitigation strategies through palm oil and enzyme supplementation can be used in lamb diets without adverse effects on product quality.

Effects of Medium Chain Fatty Acid Supplementation in Broiler Diet on Microbiological Quality of Litter

In our experiment, coconut and palm oil supplementation was added to the diet of broiler chickens to prove the hypothesis that medium chain fatty acids (MCFAs) can reduce the occurrence of potential pathogens (Clostridium perfingens, Coliform) in gut microflore and therefore improve bird welfare. Cobb 500 cockerels were divided in five groups. Control birds were fed commercial broiler diet, while birds in the four treatment group diets were supplemented with coconut, palm oil, or a combination of the two, respectively. As a positive control, sunflower oil supplementation was included in the diet of the fifth group. During the 28 days of the study (from 14 to 42 days of life), 5 samplings were scheduled, when excreta samples were taken from the litter to analyse total microbial count and the number of Clostridia, Coliforms, and Salmonella. According to the results of microbiological analysis, coconut oil supplementation led to the continuous decline of Clostridium perfringens numbers until they vanished by the end of the experimental period. A similar but faster decline was found as a result of palm oil and the combined (palm oil+coconut oil) treatment. However, the number of Coliforms and total microbial count changed only slightly by the end of the study. No Salmonella spp. was present in the samples throughout the experiment. Altogether, coconut and palm oil supplementation has a beneficial effect on the microbiological composition of poultry litter.

Kecernaan Nutrien dan Status Fisiologis Domba Akhir Kebuntingan dengan Ransum Flushing Minyak Sawit dan Minyak Lemuru

The objective of this study was to evaluate nutrient digestibility and physiological status of local sheep at late pregnancy fed with flushing diet containing palm oil, lemuru oil, and their combination. In this research, the livestock used were 12 female local sheep at late pregnancy with an average body weight of 43.58 ± 5.57 kg were placed in metabolic cages. This study used a randomized block design (RBD) with 4 treatments and 3 block replications. The treatments were P1 = control ration (30% grass + 70% concentrate), P2 = control ration + 6% palm oil supplementation, P3 = control ration + 3% lemuru oil and 3% palm oil supplementation, P4 = control ration + 6% lemuru oil supplementation. The feed consumption, nutrient digestibility, and physiological status were measured in this study. The data obtained were analyzed using ANOVA. Means values differences were analyzed using Duncan test. The results showed that the addition of palm oil and lemuru oil to the concentrate diet increased (p&lt;0.05) crude fat consumption, dry matter digestibility, and crude fat digestibility, but decreased (p&lt;0.05) Nitrogen free extract consumption. Addition of palm oil and lemuru oil on the concentrate diet had no significant effect on dry matter consumption, crude protein consumption, crude fiber consumption, crude protein digestibility, crude fiber digestibility, Nitrogen free extract digestibility, and TDN value. The treatments did not affect significantly on physiological status. It can be concluded that the use of 6% palm oil in the ration can increase crude fat consumption and crude fat digestibility in pregnant ewes.&#x0D; Key words: digestibility, ewes, flushing, oil, physiological status

Production of waste polyethylene terephthalate reinforced biocomposite with RSM design and evaluation of thermophysical properties by ANN

In this study, bio-unsaturated polyester (BUP) raw material is synthesized using modified palm oil (MPO). A new BUP composite has been improved by adding waste polyethylene terephthalate (WPET) to the obtained synthesis. The modified palm oil supplementation decreased the density, Shore D hardness, and elastic modulus of the BUP composite while increasing its thermal conductivity, and thermal stability. WPET filler has been used to decrease the thermal conductivity of the BUP composite, rise its elastic modulus and Shore D hardness.When parameters affecting experimental conditions are optimized using Response Surface Methodology (RSM); BUP (86 wt%), WPET (11.7 wt%), methyl ethyl ketone peroxide (MEKP: 1.6 wt%), cobalt octoate (Co. Oc: 0.7 wt%), and curing time (CT: 24 h) are approximately determined. BUP composite’s density is 1324 kg/m3, Shore D hardness 84, elastic modulus 346 MPa, thermal conductivity 0.048 W/m·K, and activation energy 135 kJ/mol. Also, when the thermophysical properties of the produced BUP composite have been evaluated using experimental data, it gives consistent results in both Artificial Neural Networks (ANN) and RSM method.

Effects of palm oil and palm oil zinc soap supplementation on feed intake, feed digestibility, and performance in lamb

This research aims to evaluate the effects of palm oil supplementation (PO) and palm oil zinc soap (POZS) supplementation on feed intake, feed digestibility, and performance of Indonesian local lambs. Fifteen male lambs with an initial body weight of 16.97 ± 1.99 kg in randomized block design were analyzed in three treatments. The diets included: basal diet (60:40 concentrate to forage) with no added supplement as control (CON), basal diet plus PO, and basal diet plus POZS. Rumen partial protected fats used in this research are POZS (75:25 zinc soap to palm oil). The treatment was analyzed for 70 days with two weeks of adaptation period. The data were analyzed statistically with analysis of variance using Minitab 16 after passing the assumption test. Tukey test is used (Honestly Significant Difference = HSD) for a significant difference. The data that did not pass the assumption test was processed using the Friedman nonparametric method. The results showed that the dry matter intake in both forage and concentrate were decreased in POZS even though the digestibility of feed and blood glucose levels were not affected by treatments. Daily weights gain significantly decreased compared to control, i.e. 93.25 g/day (CON) vs 78.43 g/day (PO) and 58.09 g/day (POZS) with low feed efficiency.

EFFECT OF PALM OIL SUPPLEMENTATION ON CARCASS YIELD AND FATTY ACID COMPOSITION OF GROWING RABBITS.

12 week feeding trial was conducted to evaluate the effect of palm oil (PO) supplementation at 0%. (control), 3% or 5% levels on carcass yields and fatty acid composition of organs of growing rabbits. Results obtained showed that palm oil supplementation did not significantly affect (P&gt;0.05) carcass and organ yields. Percent analysis however showed that in the heart, myristic acid was highest in the control diet (78.58%), lauric acid in 3% PO (41.56%) and stearic acid in 5% PO (84.43%) groups. In the kidney, there was an increased level of palmitic (1.30-57.06%}but decreased levels of myristic (43.41 -0.51%) and oleic acids (9.26 - 8.08%). There were detectable levels of raprylic, linoleic and arachidonic acids in rabbits fed PO diets compared to none in the control group. On the other hand, there were detectable levels of stearic and lauric acids in the control group but none in the PO groups. In the liver, only lauric, stearic and myristic acids were detected, with the latter not detected in the liver of cor.trol group. Three rabbits on the control diet died as a result of septicaemia. It was concluded from this study that PO seemed to affect organ fatty acid composition but not on weight of organs. The effect on fatty acid composition was however, not consistent.

Response of starter broilers to diets containing graded levels of rice bran with or without palm oil

One hundred and forty four(144) day old broiler chicks of hubbard breed from a commercial hatchery were used to investigate the response of broiler chick to 0, 10 and 20% dietary rice bran with or without palm oil in a 5 week feeding trial. Significant interaction between dietary levels of rice bran and palm oil were observed on feed intake, weight gain and feedgain ratio (P&gt;0.05). Increase in dietary levels of rice bran deduced feed transit time in the GIT (P&gt;0.05) while supplementary palm oil had the opposite effect (P&gt;0.05). There was a tendency for dietary supplementation of palm oil to increase protein or fat retention (P&gt;0.05) but had no significant effect on crude fibre retention (P&gt;0.05) but had no significant effect of crude fibre retention (P&gt;0.05). It was concluded that broiler chicks could tolerate up to 10% dietary levels of rice bran without detrimental effects on performance and nutrients retention. With supplementary 5% palm oil added to such a diet, performance was comparable to that of birds fed a standard diet with money saved in the process

EFFECT OF DIETARY SUPPLEMENTATION WITH SOME FEED ADDITIVES ON THE PERFORMANCE OF LAYING HENS

One hundred and eighty (180), 28 weeks old Gimmizah laying hens were used in the experiment. Hens were distributed at random into 6 treatment groups and divided into 3 replicates of 10 layers each in a completely randomized design. The experiment was performed at a private farm in, Tanta, Gharbia a Governorate, Egypt. The objective of this investigation was to study the effect of some feed additives as oxidized palm oil and different levels of probiotic supplementation on the performance of Gimmizah laying hens, Egg quality traits, some blood parameters, blood lipid profile and economic efficiency under our local environmental conditions. hens was fed dietary treatments as: T1, basal diet (positive control, without supplementation), T2 (negative control, 2% oxidized palm oil) and other diets (T3 at T6) were supplemented with two types of probiotics as 0.5% and 1% of saccharomyces cervices and Aspergillus awamori. Results showed that; Hen-day egg production percentage, egg weight, egg number and egg mass were improved by probiotics supplementation at the level of 1% Aspergillus awamori with 2% oxidized palm oil. Also, Feed conversion was significantly (P ≤0.05) improved, while feed intake increased for groups received probiotics with oxidized palm oil at all levels used compared to negative control. While, pronounced effects on egg sell (weight, percentage and thickness) were significantly noted. Albumen and yolk qualities and Hough units were improved by adding received probiotics of yeast and Aspergillus awamori with 2% oxidized palm oil at the level 1% laying hen diets. Plasma total lipid and cholesterol were significantly (P < 0.05) decreased by adding dietary yeast and Aspergillus with oxidized palm oil to laying diets. Oxidized palm oil and probiotic supplementation to basal layer diet increased economic efficiency and relative economic efficiency; best values were obtained with 1% Aspergillus awamori with 2% oxidized palm oil. In general, based on obtained experimental results reported herein, from the nutritional and economical point of view, it may be concluded that there are some beneficial effects of oxidized palm oil and probiotics as yeast and Aspergillus awamori supplementation, especially at the level of 1% of Gimmizah hens under the experimental condition.

EFFECT OF ADDING DRY YEAST OR ASPERGILLUS AWAMORI AS NATURAL ANTIOXIDANTS TO DIETS CONTAINING OXIDIZED PALM OIL ON THE PERFORMANCE OF GIMMIZAH LAYING HENS

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 each in a completely randomized design. Layers were housed in individual cages. The first group was fed a basal diet contains 16.41% crude protein, 2748 ME kcal/ kg diet (positive control). The second group was fed basal diet contained 2% oxidized dietary palm oil supplementation (negative control). Other groups three and four were fed negative control supplemented with 0.5% and 1% dry yeast (Saccharomyces cervices), respectively. While, five and six groups were fed the negative control with 0.5% and 1% Aspergillus awamori, respectively. Results obtained; the addition of 1% Aspergillus awamori to the negative control group containing 2% of the oxidized palm oil improved: Hen-day egg production percentage, egg weight, egg number and egg mass. Feed conversion ratio was significantly (P ≤ 0.05) improved by adding 0.5% or 1% of both dry yeast and Aspergillus awamori to the negative control diet. A significant increase in the amount of feed intake was observed compared to the negative or positive control. The 6th birds which feeding of the negative control diet + 1%Aspergillus awamori significantly recorded the highest improvement in egg shell quality (weight, percentage and thickness) also the highest value of egg shape index at the age of 40 weeks. Some of the qualities of albumen, yolk and Haugh units were also improved. The addition of 1% Aspergillus awamori to the negative control diets (the basal diet + 2% oxidized palm oil) resulted in a significant improvement in some traits of blood plasma (total protein, albumin, globulin and AST enzyme in comparison with the positive and the negative control diets. A significant decrease was observed in the level of total cholesterol and triglyceride concentration as well as LDL, while HDL was significantly increased (P ≤ 0.05) in the blood plasma by increasing the levels of probiotics (dry yeast or Aspergillus awamori) added to negative control. The best economic efficiency and relative economic efficiency for the sixth treatments were observed at the level of 1% Aspergillus awamori compared to other treatments. Conclusion: The obtained results in the present study encouraging and indicated that adding 1% of probiotics (dry yeast or Aspergillus awamori) as antioxidant agents to the basal diet containing 2% of oxidized palm oil led to a significant improvement in productive performance, egg quality traits, some blood traits, economic efficiency and relative economic efficiency of Gimmizah laying hens under experimental conditions.