جستجوی مقالات مرتبط با کلیدواژه « carcass » در نشریات گروه « علوم دام »

Changes in the pattern of animal protein consumption and a greater tendency to consume chicken in the last decade has greatly increased the demand for this product. Considering that 70% of the cost of poultry production is related to nutrition, so, it can be concluded that optimal nutrition is the most important way to reduce production costs in this industry (Abdollahi et al. 2013). Advances in broiler nutrition and breeding have increased growth rate and reduced breeding period over the past few decades. At present, broilers reach slaughter weight at the age of 42 days. Unfortunately, this high growth rate leads to problems such as metabolic disorders (sudden death Syndrome, skeletal disorders and ascites), increased mortality, and abdominal, and carcass fat (Khajali et al. 2007). Slowing down the growth rate by using dietary restrictions will greatly prevent these problems. At the same time, low growth is not economical and it is necessary to compensate for the backward growth of chickens due to food restrictions. Researchers have stated that the main goal of research on dietary restriction in broilers is to improve feed efficiency and reduce carcass and abdominal fat (Zhan et al. 2007). Depriving birds, especially broilers, of rapid growth from full access to the nutrients needed for normal growth is called feed restriction, which is classified into two categories: quantitative and qualitative. The response to feed restriction depends on the duration of the feed restriction (Khetani et al. 2009). In quantitative or physical feed restrictions, the consumption of birds or animals is limited. The practical application of physical feed restriction is not easy due to the problems of regular weighing of poultry and calculating daily feed intake (Zulkifli et al. 2000). Quality restriction is another method of applying feed restriction that aims to use diets with low energy and protein levels (Fanooci and Torki 2010). Urdaneta-Rincon and Lesson (2002) y applying 85, 90 and 95% quantitative feed restriction in male broilers at 5 to 42 days of age, they showed that the application of dietary restriction led to a significant difference in weight at 42 days of age and also a significant reduction in mortality. Bautzen et al (2003) in an experiment on broiler sex mixture and the application of quantitative feed restrictions at the ages of 6 to 16 days and 80% of the previous day's consumption of the control treatment, showed that performance was affected in the early weeks, but the restricted treatments at the age of 42 One day, they achieved the desired compensatory growth and no difference with the control group. Therefore, according to the reports on the use of feed restriction in reducing metabolic diseases and losses, it seems necessary to study feed restriction in broilers. In order to evaluate the effects of quantitative feed restriction, 300 one-day-old Ross broilers were each in a completely randomized design with five treatments, five replications and 12 pieces per replication for 42 days. The birds were fed ad-libitum up to 10 days then they were restricted from 11 to 35 days and they were fed ad-libitum up from 36 to 42 of age. Experimental treatments include: (1) Corn- soybean meal – based diet as a control group (no feed restrictions), (2) feed access to 95% control group, (3) feed access to 90% control group, (4) feed access to 85% control group (5) feed access to 80% control group. Diets were prepared according to the maintenance guidelines of Ross 308 strain. At 42 days of age, one chick from each pen was randomly selected and slaughtered, and the carcass traits such as breast, thigh, gizzard, liver, abdominal fat and carcass yield were determined. On day 35 of the breeding period, one chick from each experimental unit was randomly selected and slaughtered. The cecum of the birds was isolated and examined for the microbial population of Lactobacillus, Coliform and E. coli in the laboratory. Blood samples were also collected and then, centrifuged at 3000 rpm for 10 minutes and transferred to the laboratory to determine blood parameters (Cholesterol, Triglyceride, HDL and LDL). On day 35 of the experiment, some samples were collected and transferred to the laboratory to determine the percentage of dry matter, moisture, ash and volatile solids. To sample the waste, two hours before sampling, it was placed on the bed of each plastic pen and the waste were collected from five points of each pen. Experimental data were statistically analyzed in a completely randomized design using GLM procedure by software (SAS 2004) and the means were compared by Duncan's multiple range test at 5% probability level. The results showed that feed restriction decreased feed intake and body weight gain comparted with the control group (P<0.05). Carcass characteristics, FCR and feces characteristics were not affected by Feed restriction (P>0.05). Also, feed restriction at the levels of 85% and 80% significantly decreased protein excretion in comparison with the control group (P<0.05). Feed restriction at the level of 80%, increased cecal populations of Lactobacillus spp. While decreased cecal populations of E. coli (P<0.05). Feed restriction decreased blood triglyceride and increased blood LDL (P<0.05). Quantitative feed restriction clearly affected body weight gain and feed intake of birds. The degree of change in these parameters depended on the level of feed restriction used. There was a reduction in body weight gain at 42 d for chicks restricted to 95, 90, and 85%, of ad libitum feed intake, relative to the previous day’s intake of the control birds. Such a reduction in body weight is in accordance with results from Khantaprab et al. (1997), Roth et al. (1993), and Santoso et al. (1993a). Results suggest that the growth rate of broiler chickens is related to feed intake, which supports the statement that improvement in body weight of birds is highly correlated to feed consumption (O’Sullivan et al, 1992). Overall the results showed that although feed restriction up to 80%, decreased feed intake and body weight gain of broiler chickens at the total period of experiment, but this restriction improved microbial population of cecum, decreased blood LDL and protein excretion.

To investigate the effect of different levels of Algasan pigment on the performance and meat quality of Ja[amease quail, 204 bird at day three of age, were randomly divided into four groups in three replications. Treatments included control diet (without pigment) or with 0.1, 0.2, and 0.3% (A1, A2, and A3) Algasan, respectively. In addition to recording performance data, at day 38 of age, two male quail were randomly selected from each exprimental unit to evaluate meat quality. Data were analyzed by SAS software and means were compared by Duncan test. The effect of different levels of pigment in quail diets on mean body weight gain, feed intake, feed conversion ratio, and live weight were not significant. But the highest carcass weight was observed in A1 treatment (118.33 g), the highest carcass yield in A3 treatment (73.36%), the highest light density in A1 treatment (2.029, 1.268, and 2.249%), and the highest water holding capacity in A3 treatment (4.720) (P≤0.05). The lowest meat pH, drip loss, and cooking loss showed in control (6.342), A2 (13.055%), and A3 (19.985%) treatments, respectively (P≤0.05). In general, Algasan pigment might be effective in improving some parameters of the performance and quality of quail meat.

Based on the recommendations of some poultry nutrition references as National Research Council (NRC 1994), growth period of growing Japanese quails have been considered to be six weeks and only one dietary protein concentration was recommended for the entire growth period. However, the amino acid requirements of growing quails are similar to those of broilers as the percentage of the diet decreases with age, and applying one level of protein throughout the rearing period may cause deficiency or loss of amino acids compared with daily requirements. Given the high cost of protein in quail diets and the fact that few researches has been done on the effect of dietary protein levels at different phases of growth period on quail performance, this experiment was conducted to investigate different dietary regimens of protein on production and economic performances and also carcass characteristics of Japanese quails.

The experiment was carried out in a 3×3 factorial arrangement (3 protein levels: low (L)=20%, medium (M)=22% and  high (H)=24 percent in grower phase (8-21 days)× the same dietary protein levels, in finisher phase (22-42days)) with 9 treatments, 5 replicates and 8 pieces of quails per each replication. All chicks were received the same starter diet with 2900 kcal/kg Metabolizable energy and 24% crude protein (CP) from time of hatch up to 7 days of age and after that they were received dietary L×L, L×M, L×H, M×L, M×M, M×H, H×L, H×M and H×H protein programs. Production traits such as feed consumption, body weight gain, feed conversion ratio and production index at the whole growth period, as well as some economic traits such as feed cost per gain monetary returns per quail and also some traits related to carcass characteristics and meat quality such as edible carcass percentage, water holding capacity and oxidative spoilage index of meat were measured or calculated.

During 8-42 days of age, different dietary protein levels in growing phase had no significant effect on feed intake, weight gain and feed conversion ratio (FCR). While, higher protein levels (22 and 24%) in finishing phase significantly resulted in a better weight gain, FCR and production index of quails. Protein levels in grower and finisher phases had no significant effect on monetary returns however, increase in dietary protein level in finishing phase resulted in a significant feed cost to the gain at 8-42 days. Different dietary protein programs had no significant effect on carcass part percentages, water holding capacity and oxidative rancidity of meat.

For proper performance and economic production of quails protein regimen with at least 20% protein in grower and 22% protein in finisher phases could be recommended.

The aim of this study was to investigate the effect of emulsifier in diet with with energy reduction on performance, carcass characteristics and some of blood traits of broilers. A total of 540 one-day-old chicks of Ross 308 strain in a 3×3 factorial arrangement with three levels of emulsifier (0, 250 and 500 mg / kg) and three levels of dietary energy (requirement, and 45 and 90 kcal/Kg, 60 and 105 kcal/kg and 75 and 120 kcal/kg less than requirement for the starter, grower and finisher diets, respectively) in a completely randomized design with 9 treatments, 4 replications and 15 birds per replication were used. In total rearing period, feed intake increased by decreasing the dietary energy (P<0.05). Birds fed diets supplemented by emulsifier had higher weight gain and lower feed conversion ratio (P<0.05). The relative weights of the liver, ceca, and abdominal fat were not affected by different levels of dietary energy. The emulsifier × diet interaction had no significant effect on cholesterol, High-density lipoprotein (HDL), Low-density lipoprotein (LDL), cholesterol: HDL, Alanine aminotransferase (ALT) and alkaline Phosphatase. Adding emulsifier to normal diets or diets with more energy deficiency increased blood triglyceride concentration (P<0.05). Supplementing diets with mild energy deficiency by emulsifier increased serum Aspartate aminotransferase (AST) (P<0.05). According to the results, the use of 250 gr/t emulsifier in low energy diets improved the performance of broiler chickens.

Effect of organic selenium and chromium supplementation on growth performance, carcass characteristics, and meat quality of broiler chickens was studied using 200 one-day-old Ross 308 male broiler chickens in a 2×2 factorial arrangements with 4 treatments, 5 replicates and 10 birds each. Experimental treatments were including 2 levels of Se-Met (0 and 0.4 mg/kg diet) and 2 levels of Cr-Met (0 and 0.4 mg/kg diet). At the end of trial, two birds per replicates were randomly selected and slaughtered to determine carcass traits and meat quality. Cr-Met supplementation increased feed intake during the grower and the whole period (P<0.05). The birds receiving 0.4 mg/kg of Se-Met and Cr-Met diets had the highest body weight gain (BWG) and the lowest feed conversion ratio (FCR) in the grower, finisher and whole periods (P<0.05). The highest BWG and the lowest FCR in whole period belonged to the birds fed by both elements (P<0.05). The highest relative weight of carcass and breast was observed in birds fed with Se-Met and Cr-Met (P<0.05). The highest relative weight of carcass was seen in birds fed both elements (P<0.05). Addition of Se-Met and Cr-Met increased the moisture and water holding capacity and decreased the cooking loss and malondialdehyde (MDA) content of breast meat (P<0.05). The interaction effect of treatments on meat quality was significant, as the highest water holding capacity and the lowest cooking loss and MDA was seen in broilers fed by both Cr-Met and Se-Met (P<0.05). According to the results of this experiment, it is suggested to add Se-Met and Cr-Met to diet to improve growth performance, carcass traits, meat quality and stability of broiler chickens.

The effect of Betaplus probiotic in the diet on growth performance and histomorphometry of Japanese quail jejunum was investigated by using 288 broiler chicks with 6 treatments, 4 replications and 12 birds per each in a completely randomized design from 1 to 42 days of age. The experimental treatments included: control group (without additives); three diets containing levels of 0.5, 1 and 1.5 g/kg of Betaplus probiotic; diet with deficient in protein, and diet with deficient in protein and contained 1 g/kg of Betaplus. Feed intake, and body weight gain were measured weekly and feed conversion ratio was calculated. At 42 days of age, two birds were randomly selected from each replicate and the traits related to carcass dissection were assessed. For histomorphometrical evaluation of the intestine, the jejunum samples were collected. The utility of Betaplus probiotic at level 1 g/kg improved food intake, weight gain, conversion factor and some histomorphometrical parameters of jejunum (P< 0.05). In birds were fed with level of 1.5 g/kg Betaplus, the villi thickness and crypt diameter and number of the goblet cells were decreased (P< 0.05). According to the results, the use of Betaplus probiotic at level 1 g/kg in the diet improves the growth performance and histological parameters of the jejunum in Japanese quail.

The aim of the present experiment was to investigate the effect of diets containing organic and inorganic selenium on growth performance, carcass traits and blood metabolites in geese chickens. A total of 96 one day old native geese were used in a completely randomized design with 3 treatments of 4 replicates with 8 each. The experimental diets were basal diet, basal diet plus 0.3 mg organic Se per kg of diet (Sel-plex) and basal diet plus 0.3 mg inorganic Se per kg of diet (selenite sodium). Growth performance biweekly was calculated by recording during 1-56 days. Phytohemagglutinin test used for the evaluation of cellular immunity at 8 weeks of geese. Bodyweight gain was increased over 2 to 6 weeks and decreased thereafter. Feed conversion rate (FCR) was improved by both selenium sources and the highest FCR value related to the control group in the 8th week. Carcass traits were not affected by various inorganic and organic sources of selenium (P <0.05). Diet supplementation with organic and inorganic Se increased phenolic content and the amount of saturated and unsaturated fatty acids and decreased lipid oxidation after 9 days of storage at 4°C in the refrigerator (P<0.05). Selenium supplementation decreased total blood cholesterol (P <0.05). The cellular immune response was improved in the organic selenium group compared to inorganic selenium and control group (P<0.05). In conclusion, the results of this study suggest that dietary selenium especially organic selenium has desirable potential for improving the performance, immune, and meat quality of goose chickens.

This research was conducted to investigate the effect of feeding processed shrimp waste products with gamma radiation on performance, carcass characteristics, blood parameters, liver enzymes and digestibility of broiler chicks. In this experiment, 560 one-day male broiler chicks (Ross 308) were allocated to 7 treatments, 5 replicates and 16 chicks per replicate in a completely randomized design. The treatments consisted of the basal diet (corn-soybean meal) and diets containing 5% unprocessed shrimp waste, 5% radiation processed shrimp, 10% unprocessed shrimp waste, 10% radiation processed shrimp, 15% unprocessed shrimp waste, and 15% of radiation processed shrimp waste. The results showed that in the starter, grower, finisher and whole growth period, chicks fed 15% of unprocessed shrimp waste had the lowest feed intake (P <0.05). Among treatments, the least weight gain was observed for treatments containing 15% unprocessed shrimp waste (P <0.05). In the grower, finisher and whole periods, the control and 5% radiation processed shrimp wastes showed the lowest feed conversion ratio (P <0.05). The percentage of thigh, breast and heart was higher in radiation treated treatments (P <0.05). In those treatments that containing 15% unprocessed shrimp waste, the abdominal fat pad percentage decreased. The effect of experimental treatments on the levels of serum triglyceride, cholesterol, LDL, HDL, AST and ALT concentrations at 21 days of age was not significantly different in broiler chicks (P>0.05). Increasing the level of shrimp wastes caused significantly reduced of LDL serum at 42 days of age (P <0.05). At 42 days of age, the highest levels of HDL serum was observed in the treatments containing 5% shrimp waste and control group (P <0.05). In the treatments containing 5% radiation processed shrimp waste, the digestibility of nutrients was similar to the control group (P <0.05). The results of this experiment showed that the use of radiation processed shrimp waste at 5% level was not a negative effect on the feed conversion ratio, weight gain and final weight of the birds, but also improved broiler chicken performance with increasing digestibility of the nutrients.

This study was conducted to investigate the performance of growth and carcass traits of Lori-Bakhtiari (L), Romanov×Lori-Bakhtiari (F1RL), Pakistani×Lori-Bakhtiari (F1PL), (Pakistani×Lori-Bakhtiari)×(Romanov×Lori-Bakhtiari) (¼P¼R½L) and (Romanov×Lori-Bakhtiari)×(Romanov×Lori-Bakhtiari) (F2RL) crossbred lambs. Carcass characteristics of Lori-Bakhtiari (n=50), F1RL (n=41) and F2RL (n=20) crossbred lambs. Lambs were weaned at the age of 90 ± 5 days. Lambs were slaughtered at six month of age. Birth weight in Lori-Bakhtiari (5.12 kg) was significantly (P<0.05) higher than in Romanov (4.81 kg) and Pakistani (4.57 kg) crossbred. Weaning weight and body weight in six months were significantly higher (P<0.05) in Romanov × Lori-Bakhtiari crossbred lambs (30.96 and 42.75, respectively) than in Lori-Bakhtiari (28.81 and 41.69, respectively) and others genetic compositions. F1RL and F2RL crossbred lambs for lean percentage were significantly (P<0.05) higher than in Lori-Bakhtiari lambs in constant age (59.57, 60.57 and 50.03, repectively) and in constant weight (60.99, 59.24 and 49.56, repectively). Weight and percentage of total fat of carcass in Lori-Bakhtiari lambs (7.56 kg, 31.57% in constant age 6.65 kg, 30.46% in constant weight, repectively) were significantly (P<0.05) higher than of F1RL (4.25 kg, 20.91% and 4.30 kg, 20.08%, repectively) and F2RL (2.95 kg, 17.97% and 5.12 kg, 22.46%, repectively) lambs. In conclusion, crossbreeding between Romanov and Lori-Bakhtiari (F1) improves body weight at weaning and at six months of age, and carcass composition.

This experiment was conducted to evaluate the effect of different levels of iron (0, 40, and 80 mg/kg) with iron sulfate source (FeSO4) on performance, internal organ weights and immune response of boiler chicks in periods of whole production (w: 1-42 days of age), grower and finisher (GF: 11-42 day of age) and finisher (F: 25-42 day of age) using a 3×3 factorial experiment. The results showed that the utilization of 80 mg/kg FeSO4 significantly (P<0.05) decreased daily feed intake of broilers during T period. The addition of 40 mg/kg FeSO4 into the diet significantly decreased the relative weights of jejunum, ileum and whole intestine (P<0.05). The relative weight of bursa of Fabricius was higher in chicks fed 40 mg/kg FeSO4 supplement in F period as compared to birds fed control diet (P<0.05). The positive effects was observed on blood monocytes in chicks fed diet containing FeSO4 supplement during F period compared to T period (P<0.05). Furthermore, the inclusion of 40 and 80 mg FeSO4/kg diet linearly (P<0.01) increased blood lymphocytes percentage of broilers. According to the results of this experiment, it seems that the utilization of 40 and 80 mg/kg FeSO4 can improve carcass quality by reduction of small intestine weight and have beneficial effects on immunological responses of broiler chicks especially during F period.

This research was carried out to investigate the carcass physical and chemical characteristic of fattening black male kids. The 36 black male kids (native) weaned (4 months) with 25 kg initial weight fattened in closed nutrition system. They were received different diets of 1, 2 and 3 by different levels of 2, 2.4 and 2.8 Mcal/kg DM metabolizable energy (ME) respectively and 14 per cent crud protein. At the end of experiment 6 kids of each treatment randomly were selected, slaughtered and determined carcass physical and chemical characteristics. All data were analyzed in completely random design with using the GLM procedure of Statistical Analysis System package (SAS) ver. 8.2 (SAS Institute Inc., Cary, N.C.) and Duncan’s multiple range test was used to determine differences between treatment means (P< 0.05). The result showed that the best of carcass efficiency and empty body weight were 46.5 and 91 per cent in 2.8 Mcal/kg DM of ME diets respectively (P<0.05).The highest percentage of valuable parts of carcass included shoulder, leg and longissimus lumbar (eye) muscle were 23.2, 28.5 and 20.9 per cent respectively (P<0.05). Also, the highest percentage of red meat were 74.5 and 57.1 per cent in the leg and longissimus lumbar muscle respectively (P<0.05). The maximum eye muscle area and length of eye muscle were in 2.8 Mcal/kg DM ME (P<0.05) diet. The highest percentage of carcass crud protein was 22.7 in diet 1, but the lowest was 21.4 per cent in diet 2 (P<0.05). In conclusion, the diet of 2.8 Mcal/kg DM ME and 90 days fattening period recommended because it improved carcass physical and chemical composition characteristics of black male kids.

This experiment was conducted to compare the effect of some poultry probiotics produced in Iran on performance parameters, economic indicators and small intestinal morphology of broilers using 500 one-day-old Ross 308 broilers in a completely randomized design with 5 treatments and 5 replicates per each treatment. The experimental treatments were: 1- basal diet (control), 2- basal diet + Bacto-Gene® probiotic, 3- basal diet + Di-Pro® probiotic, 4- basal diet + Hypro-Tect® probiotic and 5- basal diet + Probitaz® probiotic. At 24 and 41 days of age, one male broiler chick was slaughtered from each experimental unit. Orthogonal contrasts were done to compare the effect of probiotics versus control. The results of this study showed that the treatments containing probiotic had no significant effect on body weight gain and feed conversion ratio. The utilization of probiotic Hypro-Tect® resulted in significant reduction in feed consumption in whole experimental period compare to other treatments containing probiotic (P≤0.05). The final body weight, European efficiency factor, economic indices and carcass percentage were not affected by experimental treatments. The utilization of probiotics had no significant effect on intestinal relative length and morphological indices of jejunum and ileum. In orthogonal contrast, the utilization of treatments containing probiotic increased feed cost as compared to control group (P<0.05). According to the results of this study, it seems that the utilization of studied probiotics had no significant effect on performance parameters, economic indices and small intestinal morphology of broilers reared in optimal condition as compared to control group.

The purpose of this research was to evaluate the effects of the feed form on characteristics of litter, quality characteristics of foot and breast and tibia bone indices in broilers. A total of 936 broilers (Ross 308) were randomly assigned to 3 treatments (mash, pellet and extrude) with 12 replicates and 26 day-old chicks in each pen that were reared for 6 weeks. Litter quality (PH, Moisture, Total volatile nitrogen (TVN) and nitrogen retention) values, the counts of the microbial populations (bacterial and fungi), foot and carcass lesions (lameness, footpad lesions, hock burns and breast blisters), calcium and phosphorus content of tibia bone and tibia bone characteristics (length, diameter, weight, weight percent, strength of fragility) were determined at 42 days of age and mortality was recorded daily.
The results have shown that the greater percentage of the moisture, TVN, nitrogen and the lower counts of the spore bacteria and fungi of litter were found by extrude diet form. There is no significant difference on footpad dermatitis, breast blister, calcium and phosphorus of bone and tibia bone characteristics, but the higher rate of hock burns, lameness and percentage of the mortality were observed by pellet and extrude diet form compared with mash diet form in broiler chicken. So pellet and extrude diet form have shown negative effects on values of the moisture, TVN, nitrogen of litter and percentage of mortality and increased incidence of hock burn and lameness in broilers compared with mash diet form.

The effects of hydrochloric and butyric acids supplementation to broiler chicken diets were investigated on performance, apparent protein digestibility, intestinal microbial population, carcass characteristics and intestinal histology. In these experiments, 280 male Ross 308 one-day old chicks were assigned to 7 treatments. Each treatment included 4 replicates of 10 chicks. Data were analyzed in a completely randomized design. Treatment diets consisted of dietary addition of two levels of hydrochloric acid (1.5 and 3 percent), two levels of butyric acid (0.2 and 0.4 percent) and two levels of the acids mixture (1.5 0.4 and 3 0.2 percent). One treatment with no acid supplementation was considered as control group. The results showed that addition of hydrochloric and butyric acids in grower period to the diets of broiler chicks had a significant effect on average body weight and body weight gain. The level of 3 percent hydrochloric acid caused lowest and 0.4 percent butyric acid caused highest average body weight and average daily gain in both experiments. Supplemented acids significantly affect feed intake and feed conversion ratio in the grower period. Three percent hydrochloric acid treatment and mixed of the acids (3 0.2 percent) had lowest feed intake. Acid treatments had no significant effect on microbial count of ileum, carcass characteristics and histology of the small intestine of broiler chickens. The results of current experiment showed that the use of hydrochloric acid and butyric acid in diets had no positive effect on growth performance, carcass characteristics and morphology of the small intestine of broiler chickens that were grown under experimental conditions.

The effects of seeds and whole plant powder and extract of Milk thistle (MT) plant in reducing the negative effects of feeding 500 ppb aflatoxin B1 (AFB1) on broiler chickens performance, carcass characteristics and some blood parameters were examined using 192 one-day old chick (Ross 308) in a completely randomized design with six treatments, four replicates and 8 birds per repetition. The experimental treatments included: 1) control, 2) contaminated control (CC), 3) CC 0.5 percent of MT seed powder, 4) CC 1 percent MT plant powder, 5) CC 600mg/kg MT plant extract, 6) CC 1000mg/kg MT plant extract. Results indicated that feeding contaminated diet reduced body weight gain and increased the feed conversion ratio and alanine aminotransferase enzyme compared with control in whole experimental period (P≤0.05). The inclusion of 1 percent MT plant powder to the contaminated diets improved weight gain and feed conversion ratio in 1-7, 7-21 days and whole experimental period (1-35 days) compared to the contaminated control (P≤0.05). The addition of 0.5 percent MT seed powder, 1 percent MT plant powder and 1000mg/kg MT plant extract to the contaminated diets decreased alanine aminotransferase enzyme (at 35d) compared to the contaminated control (P≤0.05). It was concluded that compared to other treatments, one percent MT plant powder was more effective in reducing the negative effects of feeding AFB1 in broiler chickens.