Poultry Offal Meal Research Articles

Standardized ileal digestibility of amino acids of protein sources associated with exogenous enzymes for broilers.

ObjectiveTwo experiments were conducted to evaluate the effect of enzyme complex (EC) on the standardized ileal digestibility (SID) of amino acids (AA) in corn gluten meal (60%) (CGM), soy protein concentrate (SPC), dried bovine plasma (DBP), and poultry offal meal (POM). Experiments I and II were conducted with broilers in the pre-starter (1 to 7 days of age) and starter (1 to 21 days of age) phases, respectively.MethodsThe treatments consisted of a protein-free diet (PFD) containing feedstuffs either supplemented with EC (xylanase, amylase, and protease) or not. In Experiment I, a total of 360 one-day-old male Cobb-500 broiler chicks were randomly housed in 45 pens, resulting in five replicates with eight birds each, totalizing eight treatments and one PFD group. In Experiment II a total of 270 one-day-old male Cobb-500 broiler chicks were randomly housed in 45 pens, resulting in five replicates with six birds each, totalizing eight treatments and one PFD group. The PFD groups were used to assess the endogenous AA losses. The birds were slaughtered to collect the ileal content.ResultsIn the pre-starter phase, the SID of arginine, branched chain-aminoacids, glycine, serine, aspartate, and glutamic acid increased with EC addition. The EC improved the SID of arginine and glutamic acid of CGM; the SID of valine and cystine of SPC; the SID of leucine, glycine, and aspartate of POM and the SID of isoleucine of DBP. In the starter phase, the SID of isoleucine, phenylalanine and glycine increased in EC-supplemented diets. The EC improved the SID of isoleucine of DBP; the SID of phenylalanine of CGM and POM. The SID of AA of SPC was not influenced by the EC.ConclusionThe addition of an EC to broiler pre-starter and starter diets is efficient in increasing the SID of AA on SPC, POM, and DBP.

Effect of phytase and carbohydrases supplementation on digestibility, palatability, fecal characteristics and fecal fermentation products in dogs fed plant-protein diet

The use of exogenous enzymes in canine nutrition has been studied as a way to improve the nutritional value of plant by-products. This study conducted 2 experiments to evaluate the effects of exogenous phytase and a complex of carbohydrases supplementation on plant protein based diets for dogs. Dietary treatments consisted of an animal protein-based diet (AD; poultry offal meal and meat-and-bone meal) without enzyme inclusion; a plant protein-based (PD; soybean meal) without enzymes, considered the control diet; PD + 5000 phytase units (FTU)/g (PD + P5); PD + 10,000 FTU/g (PD + P10); PD + 15,000 FTU/g (PD + P15); PD + 50,000 units of a carbohydrase enzyme complex (U)/g (PD + C); PD + a combination of 5000 phytase units FTU/g and 50,000 units of a carbohydrase complex U/g (PD + PC). In experiment 1, 14 dogs were fed the experimental diets and distributed in a randomized block design to assess digestibility, fecal characteristics, and fecal fermentation products. In experiment 2, a palatability test was evaluated in pairs by the means of two comparisons: PD vs. PD + PC and PD + P5 vs. PD + PC, with 16 dogs. The inclusion of PD + PC did not alter the digestibility of the diet (P > 0.05). The inclusion of phytase linearly increased fecal pH, concentrations of acetic and propionic acids, and total production of short-chain fatty acids (P < 0.05) in the feces of the dogs. Dogs fed the diet with enzyme complex (PD + PC) had a greater intake ratio when compared to the PD diet (P < 0.05). There was no difference (P > 0.05) in the first choice of the dogs for a specific diet for any of the comparisons made. Enzyme supplementation did not influence nutrient digestibility, but it increased the ME content of the PD. In addition, supplementation with the carbohydrase complex increased the production of total short-chain fatty acids and reduced fecal dry matter without compromising the acceptance of the diets.

Soybean meal and poultry offal meal effects on digestibility of adult dogs diets: Systematic review.

Soybean meal and poultry offal meal are protein ingredients commonly used in the formulation of commercial diets for dogs. However, there remains great variability in the data on the digestibility of each protein source. This systematic review study aimed to examine the intake, apparent nutrient digestibility coefficients and fecal output of protein sources (soybean meal and poultry offal meal) in adult dog food as reported in published studies. The article search was conducted in August 2018 in the PUBMED, SciELO, Science Direct and AGRIS indexing databases. The literature search was performed using "digestibility", "source protein" and "dog" as the main key terms combined with sub-terms to broaden the scope of the search. Criteria were defined for readability, exclusion and inclusion of articles. Results were organized in groups according to the search in the indexing databases, totaling 1,414 articles. After the works were selected following the inclusion criteria, 17 articles were evaluated in this review. According to most studies, plant-based ingredients have a less variable nutritional composition than animal-derived ingredients and poultry offal meal increases the digestibility coefficients of nutrients and energy and reduces fecal dry matter production. Factors inherent to raw-material origin, ingredient and food processing, as well as the high heterogeneity of the methodologies evaluated in the studies are directly related to the obtained results. To ensure a more accurate evaluation of the quality and of effects on the digestibility of protein sources, we recommended that articles include ingredient processing data and that the variables be evaluated under standardized study conditions.

Poultry offal meal production conditions impact meal quality and digestibility in Atlantic salmon (Salmo salar)

Aquafeed manufacturers are increasingly interested in ensuring consistently high-quality products, while relying heavily on poultry offal meal (POM), which is inevitably variable. This study examined the chemical composition of 22 different commercially and experimentally produced POM to determine which chemical variables best predict in vivo protein digestibility in Atlantic salmon (Salmo salar) and to evaluate which production variable, rendering temperature or raw material freshness, has a greater impact on digestibility. The chemical composition of commercially and experimentally produced POM was extremely variable. Significant relationships were found between in vivo dietary protein digestibility and D-glutamic acid (R2 = 0.64) and D-aspartic acid (R2 = 0.62). Rendering temperature and raw material freshness had significant effects on D-amino acids and biogenic amines. D-glutamic and D-aspartic acids may provide rapid-assessment indication of POM quality, as these D-amino acids were linked to protein digestibility and affected by the production variables. This study supports the well-held notion that POM is subject to significant variability and addresses the specific chemical characterisation of POM and the production conditions which impact nutrient digestibility in Atlantic salmon. These results prove beneficial to aquafeed manufactures aiming to ensure consistency and high nutritional quality in protein sources for aquafeed.

POULTRY OFFAL MEAL AS A PROTEIN SUPPLEMENT FOR GROWER PIGS

A 16-week feeding trial, involving 18 weaner pigs in a randomized complete block design, was carried out to determine the value of poultry offal meal (POM) as a protein supplement for grower pigs at three dietary levels, 0%, 10% and 20%. Liveweight gain, dressing percentage and backfat thickness were significantly (&lt;0.05) higher in pigs fed 20% POM dietary level. The cut parts, heart, liver and kidney, also increased with increasing level of POM), the diets. The poultry offal meal (POM), the processed, edible and inedible parts of poultry (viscera feathers, beaks blood, discarded eggs and dead birds) used for this study, contained 56.4% crude protein 20.9% crude fat, 7.7% total ash 4.6% crude fibre and 3.18Kcal/gin metabolizable energy. The results of this study suggest that POM could be incorporated in grower pig rations up to 20% with good results.

Performance of Clarias gariepinus fed poultry offal meal as a replacement for fishmeal

uvenile of Clarias gariepinus (average initial weight 32.89g±0.36) were stocked at a density of 56/m2 in concrete tank and fed diets containing varying levels of poultry offal meal as partial total replacement for fish meal. The poultry offal meal was included at 0%, 10%, 20% and 40% levels of inclusion representing, 0%, 25%, 50%, 75% and 100% replacement of fish meal in the diet of the fish. Results showed that fish fed 20% level of inclusion of poultry offal meal (50%) (replacement of fish meal) had the highest average final weight/fish (104.85g) and a significantly (P&lt;0.05) better feed conversion efficiency (0.53) than the other diets. However, fish on diet containing 40% level of inclusion of poultry offal meal (100% replacement of fish meal) had equal feed conversion efficiency (0.49) as the control and the least cost of feed per unit gain in body weight (₦0.15/g). Feed intake and live weight gain were not significantly (P&gt;0.05) different among all dietary treatments. It is therefore established from this study that poultry offal meal; can completely replace fishmeal in the diet of Clarias gariepinus. The best overall performance was obtained at 50% replacement of fish meal with poultry offal meal.

POULTRY OFFAL MEAL AS A PROTEIN SUPPLEMENT FOR LAYING HENS AND FINISHER BROILERS

Two experiments were conducted to determine the value of poultry offal meal (POM) as a protein supplement for layers and finisher broilers, respectively, at dietary levels of O, 10, 15 and 20%. In the layer experiment, body weights of layers increased with increasing dietary levels of POM. Treatments effects on feed intakes were not significant but egg production as well as feed efficiency were significantly (P &lt; 0.05) improved by POM. In the broiler experiment, feed intake, growth rate, feed efficiency ad weights of livers were significantly (P &lt; 0.05) higher at 15 and 20% POM dietary levels. Abdominal fat became significantly (P &lt; 0.05) higher as from 10% POM dietary level. Poultry offal meal (POM), the processed edible and inedible parts of poultry (viscera, feathers, beaks, blood, discarded eggs and dead birds), used in this study contained (on dry matter basis) crude protein 56.4%, crude fat 20.9%, total ash 7.7%, crude fibre 4.6%, metabolizable energy 3.18kcal/gm.

N-Butanol production by Saccharomyces cerevisiae from protein-rich agro-industrial by-products.

n-Butanol is a renewable resource with a wide range of applications. Its physicochemical properties make it a potential substitute for gasoline. Saccharomyces cerevisiae can produce n-butanol via amino acid catabolic pathways, but the use of pure amino acids is economically unfeasible for large-scale production. The aim of this study was to optimize the production of n-butanol by S. cerevisiae from protein-rich agro-industrial by-products (sunflower and poultry offal meals). By-products were characterized according to their total protein and free amino acid contents and subjected to enzymatic hydrolysis. Protein hydrolysates were used as nitrogen sources for the production of n-butanol by S. cerevisiae, but only poultry offal meal hydrolysate (POMH) afforded detectable levels of n-butanol. Under optimized conditions (carbon/nitrogen ratio of 2 and working volume of 60%), 59.94mg/L of n-butanol was produced using POMH and glucose as substrates. The low-cost agro-industrial by-product showed great potential to be used in the production of n-butanol by S. cerevisiae. Other protein-rich residues may also find application in biofuel production by yeasts.

Growth performance of African mudfish &lt;i&gt;Clarias gariepinus&lt;/i&gt; Fingerling fed graded poultry offal meal as a replacement of fishmeal

Twelve week feeding experiment was conducted to evaluate five different mixing ratios of Poultry Offal Meal (POM) and Fishmeal (FM) at a graded level of 0:100%, 25:75%, 50:50%, 75:25%, 100:0% FM: POM and a positive control of commercial diet, Clarias gariepinus fingerlings triplicate groups of 10 fingerlings with mean weight of 5.60g were used in 18 plastic tanks and fed 5% body weight. The SGR ranged from 1.03g/fish/day to 1.08g/fish/day with diet 100% POM having the lowest, 50% poultry offal meal gave the best value for Feed Conversion Ratio (2.07. 0.01), protein intake (7.87±0.02), protein efficiency ratio ((1.05±0.01) , nitrogen metabolism (449.58±0.90), GFCE (48.58), and ANPU (44.32) and Showed significant difference (P˂0.05) with other diets. This study showed that fishmeal can be successfully replaced by 50% POM in the diets of Clarias gariepinus without any adverse effect on its growth performance and feed utilization. Keyword : Clarias gariepinus, poultry offal, fingerlings, growth, fish meal.

Crude corn oil as dietary fat source for dogs

The objective of this study was to evaluate the effects the inclusion of corn oil on the coefficients of total tract apparent digestibility (CTTAD) of dietary nutrients and palatability of dog foods, and on the faecal characteristics of dogs. Three experiments were carried out. In Experiment 1, the effects of diets with increasing CO concentrations (40, 80, and 120 g/kg) in replacement of poultry offal fat (POF) in the basal diet on the CTTAD of dietary nutrients, dietary metabolizable energy (ME) content and on dogs’ faecal characteristics were analysed in eight adult dogs distributed in a double Latin-square design (4 × 4). Experiment 2 evaluated the CTTAD of the nutrients in diets containing either corn or poultry offal fat used as fat sources in replacement of 92% of a basal diet containing beef tallow in nine adult dogs applying a randomized experimental design. Experiment 3 compared the palatability of diets containing either corn oil or poultry offal meal and coated or not with a palatant by first choice test and intake ratio (IR) calculation. Dietary CTTAD and ME content, and faecal characteristics were not different (P > 0.05) among diets with increasing CO concentrations or compared with the diet with POF. No differences (P > 0.05) in the CTTAD of acid-hydrolysis ether extract (AHEE) were detected between diets containing CO (98.62%) or POF (97.94%). The inclusion of CO in did not influence diet palatability (P > 0.05). These results indicate that corn oil may be utilized as fat source in dog foods.

Poultry offal meal in broiler chicken feed

An outstanding feature of poultry production that provides animal protein yield for human feeding is its short production cycle. This characteristic has a linear relationship with waste production. Increasing the inclusion of this residue in diets in the near future is desirable in step with the growth of poultry production since it offers a better environmental and nutritional alternative to current methods. We evaluated the effects on the performance and carcass characteristics of broiler chickens produced by the inclusion of poultry offal meal (POM) in their feed. Treatments consisted of a control diet (corn, Zea mays and soybean, Glycine max) and four diets with inclusion of 30, 60, 90 and 120 g kg-1 of POM. The diets were formulated based on the level of digestible amino acid once categorized as isocalcic, isophosphoric, isosodic, isoenergetic and isonutritive for protein, methionine+cystine, lysine and threonine. The feed's electrolytes were corrected so that each diet had the same electrolytic balance. The variables analyzed were feed intake, weight gain, feed conversion ratio, body weight, carcass yield, chicken cut yield and abdominal fat. Feed intake was not affected by the quantities of POM added. The weight gain, feed conversion, carcass yield and noble cuts presented quadratic responses to the treatments. Abdominal fat increased linearly. The performance of the poultry, and carcass characteristics were maximized by the inclusion of 53 and 65 g kg-1, respectively, of POM in the diet, and the inclusion of 120 g kg-1 of POM provided greater disposition of abdominal fat.

The use of carbon and nitrogen stable isotopes for the detection of poultry offal meal in meat-type quail feeds

The objective of the present study was to trace the inclusion of poultry offal meal (POM) in the diet of meat-type quails reared for a long period using the technique of stable isotopes. A number of 320 quails were randomly distributed into eight treatments: vegetable diet (T1), and a diet containing 8% POM were fed until the end of the experimental period (T2) or replaced by the vegetable diet on day 42 (T3), 56 (T4), 70 (T5), 84 (T6), 98 (T7), and 112 (T8). Breast muscle samples were collected from four birds randomly selected per treatment every 14 days. The obtained isotope results were submitted to multivariate analysis of variance (MANOVA) with the aid of the GLM procedure of statistical SAS program. Treatments were different from T1 when birds were sacrificed at least two weeks after the diet was changed. T2 results were different from T1 in all evaluated periods. It was concluded that it is possible to trace poultry offal meal inclusion in a strictly vegetable diet after the diet was changed for at least 14 days.

Performance of Commercial Poultry Offal Meal as Fishmeal Replacement in the Diet of Juvenile Malaysian Mahseer, Tor tambroides

Mahseer is one of the most expensive freshwater fish in Malaysia and has a good potential for freshwater aquaculture industry. This study was conducted to evaluate the suitability of Poultry Offal Meal (POM) as Fish Meal (FM) replacement in the diet of Malaysian mahseer (Tor tambroides). The POM:FM ratios tested were 0:100, 25:75, 50:50, 75:25 and 100:0. One hundred and fifty mahseer fingerlings (3.0±0.05 g) were equally and randomly stocked into 15 65 L aquaria. The diets were randomly assigned to the aquaria in triplicates groups. The feeding trial was conducted for 96 days. No significant differences (p>0.05) were observed among the survival rate of fish while it was above 90% in all the treatments. Weight gain and specific growth rate significantly increased when 50-100% of dietary fishmeal was substituted with POM. Whole body composition of Malaysian mahseer was not significantly influenced by the experimental diets. This study showed that fishmeal in the diet of mahseer can be replaced by POM up to 100% ratio without any adverse effect on survival, growth performance and body composition.

Performance and Carcass Characteristics of Broiler Finishers Fed Different Levels of Poultry Offal Meal and Crayfish Waste Meal as Replacement for Fishmeal

Performance and Carcass Characteristics of Broiler Finishers Fed Different Levels of Poultry Offal Meal and Crayfish Waste Meal as Replacement for Fishmeal

Determination of the chemical composition, amino acid levels and energy values of different poultry offal meals for broilers

The aim of this study was to determine the chemical composition, amino acid content and energy values, as well as to quantify the passage rate in the digestive tract of three different poultry offal meals (POM), in two experiments carried out with broilers. In the first experiment, metabolizable energy values were determined (AMEn and TMEn) using the method of total excreta collection. In this experiment, 150 15-d-old male and female broilers were distributed according to a completely randomized experimental design with 5 treatments of 5 replicates of 6 birds each. The following treatments were applied: a reference diet, three test diets consisting of 250 g/kg of the tested ingredient (POM) + 750 g/kg of the reference diet, and one group of birds fasted for excreta collection to determine endogenous and metabolic losses. In the second experiment, POM passage rate results were obtained using 90 26-d-old broilers distributed according a completely randomized design with three treatments of 5 replicates of 6 birds each. POM passage rate was correlated (r = -99.86%) with its EE content. The evaluated POMs presented the following ME values: 16,727; 15,781 and 17,443 MJ AMEn /kg and 17,877; 15,882 and 17,527 MJ TMEn /kg for samples A, B and C, respectively.

Traceability of animal by product meals in broilers fed sugarcane yeast using stable isotopes

The objective of this study was to verify if the dietary inclusion of sugarcane yeast at levels commonly used in broiler diets influences the traceability of cattle meat meal and poultry offal meal, using the technique of stable carbon and nitrogen isotopes in the breast muscle of chickens. A number of 325 one-d-old male broilers were randomly distributed into 13 treatments with 25 birds each. Treatments consisted of a control diet based on corn and soybean meal, and the inclusion of 1, 2, 4, or 6% meat and bone meal, poultry offal meal or sugarcane yeast. At 42 days of age, six birds per treatment were randomly selected, sacrificed, and their breast muscle was collected for isotopic ration analysis. The isotopic ratio of birds fed the diet with inclusion of 6% sugarcane yeast was different from those fed the control treatment, but not from those fed diets with the inclusion of 2, 4 and 6% meat and bone meal or 4 and 6% poultry offal meal. The inclusion of 6% sugarcane yeast in broiler diets based on corn and soybean meal may affect the traceability of animal by product meals.

Poultry offal meal in chicken: Traceability using the technique of carbon (13 C/12 C)- and nitrogen (15 N/14 N)-stable isotopes

Studies on the detection of animal by-products in poultry meat are rare and practically nonexistent in chicken meat. With the development of the technique of stable isotopes for traceability purposes and the certification of broiler diet patterns, it has been necessary to know the behavior of the isotopic signature of different tissues in birds, in case of a potential replacement of a diet containing animal ingredients with a strictly vegetable one and vice versa. Thus, this study, carried out at the São Paulo State University, Botucatu Campus, Brazil, aimed to evaluate meat from the breast, thigh, drumstick, and wings to trace the presence of poultry offal meal (OM) in broiler feed using the analysis of stable isotopes of carbon (13 C/12 C) and nitrogen (15 N/14 N) by mass spectrometry. In total, 720 one-d-old chicks were distributed into 6 groups: vegetable diet (VD) from 1 to 42 d; 8% poultry offal meal (OM) diet from 1 to 42 d; VD from 1 to 21 d and 8% OM diet from 22 to 42 d; VD from 1 to 35 d and 8% OM diet from 36 to 42 d; 8% OM diet from 1 to 21 d and VD from 22 to 42 d; and 8% OM diet from 1 to 35 d and VD from 36 to 42 d. Through the analysis of C and N, it is possible to trace the use of OM in broiler feeding when this ingredient is part of the feeding throughout the breeding phase or when it substitutes a strictly VD even up to 35 d. When an OM diet is substituted by a VD, the animal ingredient has to be part of the feeding for 21 d or longer to be detected by this method.

Performance and Carcass Characteristics of Broiler Finishers Fed Different Levels of Poultry Offal Meal and Crayfish Waste Meal as Replacement for Fishmeal

Aims: There is need to supply birds with the nutrients required in order to maintain normal growth and reproduction. The escalating cost of dietary protein ingredients necessitates the search for alternatives in poultry production. The inclusion of crayfish waste (CW) and poultry offal (PO) in chicken feeds could reduce the cost of dietary proteins. The study evaluated the utilisation of CW and PO as dietary protein sources for chicken production. Study Design: One hundred and eighty day-old Marshall broiler chicks were used for the study in a completely randomized design. Proximate composition of the poultry offal meal and crayfish waste was determined using the analytical methods of AOAC (1996). Data generated were subjected to analysis of variance and significant treatment means were separated using Duncan Multiple Range Test. Place and Duration of Study: The study was carried out in the Poultry Section of the Teaching and Research Farm of the Lagos State Polytechnic, Ikorodu. The study lasted for nine weeks (five weeks for the starter period and four weeks for the finisher period).

현미 함유 반려견 사료의 영양소 소화율, 분 특성 및 기호성

본 연구는 반려견 사료 내 주요 탄수화물원인 밀가루(원물기준 약 51%)를 현미로 15%, 30% 대체 급여하였을 때, 사료 영양소 소화율, 배설분 특성, 기호성 변화를 조사하기 위하여 말티즈(Maltese) 강아지(8~9개월령, 시험개시 평균체중 <TEX>$2.8{\pm}0.3$</TEX> kg) 6마리는 이용 반복 <TEX>$3{\times}3$</TEX> 라틴방각법에 따라 실험을 수행하였다. 모든 영양소 소화율에서 현미 15%구가 가장 높거나 혹은 가장 낮은 quadratic 효과가 나타났다. 대조구와 현미 30% 구간에는 차이가 없었다. 사료의 DE 및 ME 농도(kcal/kg DM)도 quadratic 반응(P<0.001, P=0.015)을 보였다. 생분 및 건물 분 배설량에서도 현미 15%구가 가장 높게 나타나는 quadratic (P = 0.006, P = 0.014) 반응을 보였고, 분 score는 2.7에서 2.3으로 linear (P = 0.008)하게 낮아졌다. 현미구 대체율이 증가하면서 분 암모니아 농도는 linear (P = 0.001)한 증가를 보였으며, short- chain fatty acid 농도는 linear (P = 0.07) 감소 경향을 보였다. 본 실험에서의 현미 급여 효과는 배설 분 score에서만 확인되었고, 현미구의 현저한 기호성 증진 결과에 대해서는 현미 효과인지 가금부산물 함량 증가 효과인지 추가 실험이 필요할 것으로 생각된다. In this experiment, two inclusion levels (15 and 30% of diets, as-fed basis) of brown rice (BR) were tested against a control diet with 0% BR (51% wheat flour of diet). Six female Maltese (8~9 months age, initial mean body weight of <TEX>$2.8{\pm}0.3$</TEX> kg) were assigned to treatments in replicated <TEX>$3{\times}3$</TEX> Latin square design. Total tract digestibilities of DM, OM, acid hydrolyzed fat, CP and gross energy by dogs fed experimental diets responded quadratically (P<0.01 or <0.05) to BR inclusion levels. Similarly, quadratic responses (P<0.001, P=0.015) were observed for digestible energy and metabolizable energy values, respectively. Wet and dry fecal output also exhibited quadratic responses (P=0.006, P=0.014, respectively) but no differences were observed between control and BR 30% diets. Linear (P=0.008) effect was observed for fecal score in dogs fed BR, and fecal ammonia concentration increased linearly (P=0.001) in response to increasing BR inclusion levels. It seems that the increase in fecal ammonia concentration may be partially related to the decrease tendency (P=0.07) in short-chain fatty acid concentration. In this experiment, inclusion of BR in dog diet did not result in pronounced changes in the digestibility but in fecal score. Although inclusion of BR in diets showed profound positive effect on fecal score, it is confounded by the high inclusion level of poultry offal meal.

Poultry Offal Meal as a Substitute to Dietary Soybean Meal for Japanese Quails (&lt;i&gt;Coturnix coturnix japonica&lt;/i&gt;): Assessing the maximum inclusion level and the Effect of Supplemental Enzymes

The proximate composition, pepsin digestibility, gross energy and macro mineral contents of 12 composite samples of poultry offal meal produced in Sri Lanka were analyzed. The average dry matter, ash, crude protein, crude fiber, ether extract, in vitro pepsin digestibility and gross energy of poultry offal meal were 92.3, 6.9, 48.9, 2.1, 32.4, 83.8% and 23.6 MJ kg&lt;sup&gt;-1&lt;/sup&gt;, respectively. The average Ca, P and Mg contents were 2.36, 1.10 and 0.09%, respectively. The replacement value of poultry offal meal for soybean meal and the effect of supplementation of poultry offal meal by dietary enzymes (Solid state fermentation and Lipase) on the performance of Japanese quails fed isocaloric and isonitrogenous diets were studied in two experiments. Unsexed Japanese quails (13 days old; N=200) were randomly assigned to twenty groups. In experiment 1, poultry offal meal was incorporated at 0, 2.5, 5, 7.5 and 10% of the diets and fed until 15 weeks of age. In experiment 2, the performance of Japanese quails fed with diets containing 0, 5 and 10% poultry offal meal was investigated. Enzyme effect was tested with diets containing 5 and 10% poultry offal meal. Cost benefit analyses were carried out to find out the most cost effective treatment. The quails fed with diets containing 5 and 10% poultry offal meal produced higher number of eggs (P&lt;0.05) than those fed with 2.5 and 7.5% poultry offal meal containing diets. Supplementation of enzymes improved egg production by 21.9% only when 5% poultry offal meal was incorporated into the diet. The diet having 10% poultry offal meal was identified as the most cost effective treatment in terms of feed cost per kg live weight gain whereas 5% poultry offal meal diet was the best in terms of feed cost per kg eggs. Incorporation of poultry offal meal at 10% level cut down the feed cost per kg live weight gain by 4.6% as compared to the control diet. Cost benefit analysis showed that diet with 10% was the most cost effective. Enzyme supplementation cut down the mean feed cost per kg eggs by 26.9% only in the diets with 5% poultry offal meal level. DOI: http://dx.doi.org/10.4038/tar.v21i3.3306 <em>TAR </em>2010; 21(3): 293-307