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Articles by A. Golian
Total Records ( 6 ) for A. Golian
  S.A. Mirghelenj and A. Golian
  An experiment was conducted to assess the effect of feed form on performance, gastrointestinal development and carcass traits of broiler chickens. A total of 270 days old male Ross 308 broiler chicks were assigned to three dietary physical forms with six replicates of 15 birds each. The physical forms of diets including: mash and pelleted forms fed from 1-42 days of age, whereas the third treatment received crumbled and pelleted during 1-14 and 14-42 days of age, respectively. Feed intake, body weight gain, feed conversion ratio, performance index and production number were significantly (p<0.05) improved in pelleted or crumblepellet diets fed birds over mash fed birds. The survivability was significantly (p<0.05) higher in mash fed birds, as compared with pelleted fed birds (94.9 vs. 88.1%), but not differed with crumble-pellet fed birds. Carcass yield, breast, thigh, liver, heart, pancreas and abdominal fat weights as a percentage of live body weight were not affected by physical form of diets. Gizzard and caeca weight as a percent of body weight, were significantly (p<0.05) heavier in mash fed birds, over pellet or crumble-pellet fed birds, whereas crop, proventriculus and small intestinal weights were similar in all birds.
  A. Golian , M. Aami Azghadi and M. Sedghi
  There hundard sixty days old male Ross broiler chicks were randomly divided into 12 feeding regimens with five replicates of six birds each. One corn-soybean meal-based starter diet was first provided and then the levels of 0 (control), 2 g kg-1 Fermacto, 2, 4, 6, 8 and 10 g kg-1 Cumin Seed (CS) and 10, 20, 30, 40 and 50 g kg-1 Cumin Seed Meal (CSM) were replaced with wheat bran to provide 12 starter diets. The grower diets contained half of the same supplementation of the starter diets and an un-supplemented finisher diet was fed to all birds. Body Weight (BW) and Feed Intake (FI) was recorded and Feed Conversion Ratio (FCR) was calculated during all periods. The carcass yields and relative organ weights measured at 28 and 42 day whereas the concentration of blood metabolites and differential leukocyte counting were determined at day 28. The supplementation of diet with CSM increased BW and improved FCR (p<0.05) but birds BW decreased numerically with the increase in CS in grower diets. The FI in all periods was not influenced (p>0.05) by the addition of Fermacto, CS and CSM as compared to control fed birds. The relative organ weights were not influenced by Fermacto, CSM and CS (p>0.05) on day 28 and 42, although abdominal fat pad was decreased in birds fed diet with highest levels of CSM and CS measured at day 28 (p<0.05). The inclusion of Fermacto and high level of CS (10 and 5 g kg-1 in starter and grower diets, respectively) increased Lymphocyte and decreased Heterophile and Monocyte proportion of WBC (p<0.05). This study revealed that the inclusion of CS and Fermacto in broiler diets does not significantly affect performance, although CSM improved final BW of birds. The relative organ weights and blood metabolites were similar in birds fed diet contained Fermacto, CS and/or CSM at day 42 but these supplementations may influence white blood cells differentiation measured at 28 day of age.
  S.J. Hosseini-Vashan , A.R., Jafari-Sayadi , A. Golian , Gh. Motaghinia , M. Namvari and M. Hamedi
  This experiment was conducted to compare the effect of diets with various energy constant ME: CP ratio on performance, nutrients efficiency and carcass characteristics of broiler chickens. In a completely randomized design experiment, five starter, grower and finisher diets were formulated to have 2800, 2,900, 3,000, 3,100 and 3,200 kcal of ME kg-1 whereas the CP in starter diets (0-7 day) were 20.14, 20.84, 21.56, 22.28 and 23%, in grower diets (8-28 days) were 17.5, 18.13, 18.75, 19.38 and 20 and in finisher diets (29-42 days) were 15.75, 16.31, 16.85, 17.43 and 18%, respectively. About 200 day old Arbor acres broiler chickens were randomly assigned to 20 groups of 10 birds each. The ME: CP ratio and other nutrients such as Ca, P and amino acid per CP ratio were fixed over all diets in every period. Feed and water were fed ad libitum. Body weight and feed consumption were measured weekly and carcass characteristics were evaluated at the termination of experiment. Two birds (1 male and 1 female) from each pen were randomly selected and slaughtered to weigh carcass yield, gizzard, heart, liver, abdominal fat, breast meat and thigh meat at the end of experiment. Body weight was greater in birds fed diets contained >3000 kcal kg-1 compared to those fed <3000 kcal ME kg-1. The feed intake was not affected by dietary treatment during growing and finishing periods. Birds fed diets contained lower energy and protein had a higher FCR during all periods. The Energy Efficiency Ratio (EER) and Protein Efficiency Ratio (PER) were decreased in birds fed diets with low CP and ME content during growing period but not affected throughout starter and and finisher periods. Dietary treatments did not influence relative weight of thigh, breast bile, gizzard and abdominal fat but the relative weight of liver and heart increased (p<0.05) when chickens fed diet contained higher ratio of ME: CP. The gender did not affect percentage weight of liver, Gallbladder, gizzard and abdominal fat but the percentage of breast, thigh and heart were influenced by sex of birds. It is concluded that the high nutrients density and high energy diets may improve the nutrients efficiency, carcass characteristics and performance of broiler chickens.
  H. Saleh , Shaban Rahimi , M.A. Karimi Torshizi and A. Golian
  A study was conducted to evaluate the effect of Fish Oil (FO) on Fatty Acids (FA) profile and oxidative stability of broiler meat during storage. About 215 days old broiler chicks from a commercial hybrid (Cobb 500) were divided into 12 groups of 18 birds each. Total four diets were provided with of 0.0, 1.5, 3.0 and 6% of fish oil. Each diet was randomly assigned to 3 groups of birds for 42 days. Birds had ad libitum access to feed and water throughout the experiment. Two birds from each replicate were randomly selected and slaughtered on day 42 for meat FA determination. The omega-3 fatty acid profiles Linolenic Acid (LNA) and long chain unsaturated fatty acid, Eicosapentaenoic Acid (EPA), Docosahexaenoic Acid (DHA)) of skinless breast meat and thigh meat were determined. Oxidation stability of samples was determined after storing in -20°C for 1-3 months or in 4°C for 7, 14, 21 and 28 days. Inclusion of FO in the diets significantly (p<0.01) increased LNA, EPA and DHA value in breast and thigh meat. The birds in diet contained 6% fed group had the highest level of n-3 fatty in breast and thigh. Lipid oxidation (malondialdehyde concentration) in breast and thigh meat after storage was higher in birds fed supplemented of FO diet than those fed control diet (p<0.05). These results demonstrated that the supplementation FO in broiler diet may increase long-chain n-3 PUFA content of chicken meat. Supplementation of 3% fish oil led to enrich the meat with n-3 FA with little deterioration of oxidative stability. Addition of >3% FO to diet increased the level of meat n-3 content that was coincided with increase in oxidative susceptibility.
  A. Nabizadeh , O. Gevorkyan and A. Golian
  The objective of this experiment was to study the influence of inulin on blood parameters, humoral immune response and performance of broiler chickens. After sexing, one hundred and sixty eight, day old male Ross 308 broiler chicks were randomly allotted to 3 treatments with 4 replicates of 14 chicks each. The experimental diets including 0, 0.5 and 1% of inulin were fed for 42 days. The experimental diets were formulated based upon corn-soybean meal. Results showed that livability and Body Weight Gain (BWG) were numerically improved for broilers fed diets supplemented with inulin but differences did not vary significantly from one another and from the control. The live body weight on d 42 significantly increased when the diet supplemented with 1% inulin. Feed Intake (FI) was not affected in birds fed diets with inulin supplement compared to control bird. Feed Conversion Ratio (FCR) significantly improved when diet supplemented with 1% inulin. Indices of main immune organs except Bursa of fabricius at 42 days old were not affected in birds fed diets with inulin supplement in comparison with control group. The results of this experiment showed that inulin could affect the immune response. Total anti-SRBC and IgM titers of broiler chickens significantly increased at 35 days of age when diets supplemented with inulin. There was no significant differences in Hemoglobin concentration (Hb) and Red Blood Cells (RBCs) but the differences in White Blood Cells (WBCs), heterophils, lymphocytes and heterophils to lymphocytes ratios were significant (p<0.05) at 42 days of age. In conclusion, dietary inulin supplementation significantly improved the growth performance and may enhance immune response in broiler chickens.
  S. Ghazanfari , H. Kermanshahi , M.R. Nassiry , A. Golian , A.R.H. Moussavi and A. Salehi
  The aim of this study was to investigate the effects of feed restriction and different energy and protein contents of the diet on performance and growth hormone concentration in broiler chicken. Five hundred and seventy six day old Ross male broiler chicks were used in a 2x2x3 factorial arrangements in a completely randomized design experiment. Feeding programs consisted of ad libitum and Skip-a-Day (SAD) feed restriction, two energy levels (3100 and 2800 kcal ME kg-1) and three protein levels (22.3, 19.3 and 16.3% CP). Feed restriction (SAD) was applied during 22-32 d of age. Corn-soybean meal based diets containing vegetable oil were used. Body weight and feed intake were recorded weekly. At 21, 32 and 49 day of age, one bird from four replicate of each treatment was selected randomly to collect blood sample and then carcass, breast and thigh weight were measured. Blood samples assayed for Growth Hormone (GH) concentration by RIA. Feed restriction decreased feed intake and body weight gain (p<0.001) of birds during 22-32 and feed intake during 32- 49 day of age, while body weight gain was not affected during this period. Also, feed restriction decreased Feed Conversion Ratio (FCR) (p<0.01) and body weight gain (p<0.001) during 22-32 day of age. Feed intake (p<0.001) and body weight gain increased in broilers fed on low-energy diets compared with those fed on high-energy diets during different periods. Increasing levels of protein increased feed intake (p<0.001), body weight gain and improved FCR (p<0.001) as compared with least level of protein. Feed restriction decreased carcass percentage (p<0.001) and increased thigh percentage (p<0.01) at 32 day of age. Carcass percentage (P<0.05) and breast percentage increased in broilers fed on low-energy diets compared with those fed on high-energy diets during different periods. The low protein diet decreased carcass percentage (p<0.01), breast percentage (p<0.001) during different periods and thigh percentage (p<0.05) at 21 day of age. The result of this experiment indicated that the lowest protein level had the highest growth hormone concentration at 49 day of age. The low energy diet increased growth hormone concentration (p<0.05) at 21 day of age.
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