Akbar Yaghobfar

• Professor
• Animal Science Research Institute

This study was conducted to evaluate the effects of dietary supplementation of guanidine acetic acid and mating management current methods on the performance of Ross 308 broiler breeders. This experiment was done in a completely randomized design and factorial methods with three levels of GAA (0. '0.12 and 0.16 g/kg of diet) and three mating manage...

The experiment was conducted for investigating the effect of Non-Starch Polysaccharide (NSP) feed containing wheat and barley on relative bioavailability values (RBVs) of minerals and supplementation in the broilers’ diet. A total of 72 male broiler chickens (Ross 308) were arranged with 4 repetitions (6 birds per each replicated in the metabolic c...

This study aimed to evaluate the relative bioavailability value (RBV) of different manganese mono oxide (MnO) sources and manganese sulfate (MnSO4) in broiler diets as well as their effect on tibial characteristics, and serum inorganic phosphorous (P), calcium (Ca) and Mn concentrations. The experiment was carried out based on a completely randomiz...

This experiment was conducted to evaluate the effect of licorice (Glycyrrhiza glabra) essential oil (LEO) as an alternative to antibiotic growth promoter on growth performance, ileal microbial population, blood biochemical traits, and ascites sensitivity in broiler chickens. A total of 625 one-day-old broiler chickens were assigned to 5 dietary tre...

Background: Herbal antioxidants have beneficial effects on health and performance. Meanwhile, medicinal plants and their derivations are utilized as growth and immunity promoter. Objectives: This research aimed to evaluate the effects of garlic powder and Satureja Khuzestanica essential oil (SKEO) on broiler performance, blood lipid profile, immune...

هدف از تحقیق ارزیابی اثر شکل فیزیکی جیره ‌های غذایی آردی، پلت و اکسترود بر ویژگی‌های بستر، خصوصیات کیفی پا، سینه و شاخص‌های استخوان درشت نی بود. بدین منظور تعداد 936 قطعه جوجه‌ گوشتی یک‌روزه‌ نژاد راس 308 با 3 تیمار آزمایشی و 12 تکرار و 26 قطعه جوجه در هر تکرار در قالب طرح کاملاً تصادفی به مدت 6 هفته پرورش داده شد. کیفیت فیزیکی بستر (pH، رطوبت، نیت...

This study conducted to determine the effect of guanidino acetic acid consumption and management methods on the enhancement of aged rooster's reproduction. A total of 486 broiler breeders (Ross 308) were used in a 3 × 3 factorial experiment from week 41 to 62. Three levels as 0, 1200, and 1600 (mg/kg) of guanidino acetic acid, as a precursor of cre...

This study was conducted to improve reproductive performance in broiler breeders’ flock using a commercial product called Vemoherb T. Vemoherb T is a dry extract from Bulgarian Tribulus terrestris plant that has biologically active steroidal saponins, mainly protodioscin. These ingredients can stimulate spermatogenesis in farm animals. 120 chicken...

ABSTRACT The experiment was carried out in a completely randomized design (CRD) with 625 broiler chicks (Ross 308) for 5 repetitions (25 birds per each replicated) on the 5 treatments diet. Treatments included two different types of cereal grains (wheat, and barley) with or without an enzyme supplementation along with a corn-based diet as control g...

This study was conducted to evaluate the feeding value of whole date palm (WDP) with and without enzyme supplementation on aged laying hen's performance. Apparent metabolizable energy value of WDP was determined by the total collection method using ten adult leghorn cockerels. WDP was substituted with a corn-soybean meal basal diet at 40% level, an...

Protein is one of most important part of feeding. An important part of raising chickens is feeding -feeding makes up the major cost of production and good nutrition is reflected in the bird's performance and its products. The study was conducted to evaluate performance and carcass yield of broilers fed three different methionine requirement levels:...

Physiological characteristics of meat-type chicken such as growth traits, serum biochemical metabolites and mineral concentrations, serum enzyme activity, and gut flora were studied by means of 625 day-old chicks which randomly assigned to five treatments with five replicates in a completely randomized design. Four different types of cereal-based d...

The experiment was conducted to evaluate the feed intake, body weight gain, total energy (kJ), protein (g) intake, energy and protein efficiency ratio (EER, PER), net energy, and metabolic body weight, on two commercial broiler chickens (Arian and Ross 308 strains). Four treatmentsincluded diets formulated based onAMEn(kJ/g) Total Amino Acid (TAA)...

An experiment was conducted to study the effect of dietary fiber (DF) consist of NSP and lignin content of wheat bran and rice bran the relative biological availability of minerals supplementation in the broilers diet. A total of 120 broiler chicks (Ross 308) arranged with 4 repetitions (6 birds per each replicated) on the 5 treatments diet in meta...

This study was carried out to determination of in vitro binding capacity of wheat bran, rice bran, and perlite for Mn, Zn, Cu, and Fe. For this reason, wheat bran and rice bran were chemically analysed for moisture, protein, ash, ether extract, total carbohydrate, neutral detergent fibre, acid detergent fibre, acid detergent lignin, crude fibre, ce...

A study was conducted to investigate the effects of supplementation of dried tomato pomace (DTP) on growth performance, relative weights of viscera, serum biological parameters, antioxidant status, immune response, and bone composition of broilers exposed to a high ambient temperature. A total of 352 one-day-old male broiler chickens were randomly...

This study was carried out to determination of in vitro binding capacity of wheat and barley for Mn, Zn, Cu and Fe. For this reason wheat and barley were chemical analyzed for moisture, protein, ash, ether extract, total carbohydrate, NDF, ADF, ADL, crude fiber, viscosity, cellulose, hemicelluloses, total dietary fiber, and endogenous minerals. Min...

An experiment was conducted to evaluate the effect of different dietary source of Non-starch polysaccharides with or without enzymes on growth performance, ileal microbial population, and serum enzyme activity of broiler chickens. A total number of 625 unsexed broiler chicken (Ross-308) were randomly assigned to 5 treatments with 5 replicates and 2...

This experiment was conducted to evaluate the response of broiler chicks to Natuzyme (a commercial multienzyme) supplementation in diets containing wheat and canola meal. A total of 336 male Arbor Acres broiler chicks were used in a 3 x 2 factorial arrangement of dietary treatments that comprised 3 basal diets (corn-soybean, corn-wheat-soybean, cor...

A study was conducted to determine the effects of diet formulation type on broiler breeder performance of 50 to 64 weeks of age. Three hundred and thirty six (336) female and 48 male breeders in eight treatments with six replicates (seven females with a male) were used in the form of a randomized trial design 2×2×2 factorial. Eight experimental die...

This experiment was conducted to evaluate the effects of dietary turmeric rhizome powder (TP) on performance, blood metabolite, immune system, antioxidant status, and relative weight of organs in pre and post heat stressed broilers. Two hundred and sixty-four (264) day-old male Arian broiler chicks were randomly allotted to three dietary treatments...

Nutrition of broiler breeder hens can influence egg quality and is therefore extremely important for the development of the embryo and the successful hatching of a high quality chick. The yolk and albumen in the egg supply the developing embryo with nutrients, water and minerals for normal growth (Deeming 2002). Energy and amino acids are the most...

A study was conducted to determine the effects of 4 different lysine and methionine densities diets, Very high (VH), high (H), medium (M) and low (L) on performance of broiler breeders 50 to 64 weeks of age. 168 female and 24 male breeders in four treatments with six replicates (7 females: 1 male) were used in the completely randomized design. Four...

Two trials were conducted to study the effect of inclusion of hull-less barley and exogenous enzyme to broiler diet on the growth performance, apparent metabolisable energy (AME) and Nutrient digestibility of broiler chickens. The experiments were 3×4 factorial arrangements with three levels of enzyme (0, 300 and 600 g/ton) and four levels of hull-...

This experiment was conducted to evaluate the effects of dietary turmeric rhizome powder (TP) on performance, blood metabolite, immune system, antioxidant status, and relative weight of organs in pre and post heat stressed broilers. 264 day-old male Arian broiler chicks were randomly allotted to 3 dietary treatments containing 0, 0.4 or 0.8% turmer...

Background and Aim: Production of reactive oxygen species (ROS) increases during oxidative stress conditions, which stimulates diabetes, inflammatory reactions, rheumatism and anemia. Some antioxidant properties of turmeric rhizome powder (TRP) were revealed by previous researchers. The present study was conducted to evaluate the influence of TRP o...

Two experiments were conducted to evaluate the effects of feeding diets containing different inclusion rates of dried tomato pomace (DTP) with or without enzyme supplementation on performance, meat quality and nutrient digestibility in broiler chicks. In experiment 1, four hundred and twenty 1 day-old broiler chicks were distributed in seven treatm...

This research was conducted to determine the Non-Starch Polysaccharides (NSP's) as total, insoluble and soluble dietary fiber, and resistant and non resistant starch, content of 20 varieties hull-less barley that were produced in Iran. NSP (fiber as total, soluble and insoluble, or resistant and non resistant starch) content of hullless barley were...

A study was conducted to determine the effects of diet formulation type on egg characteristics and reproductive performance of broiler breeder (50 to 64 weeks of age). 140 female and 20 male breeders in four treatments with five replicates (7 females : 1 male) were used in the randomized 2 × 2 factorial design. Four experimental diets were formulat...

Tomato Pomace and Turmeric Powder on Immune System and Carcass Quality of Arian Broilers Under Heat Stress Condition

Effects of Tomato Pomace and Turmeric Powder on Performance, and Lipid Concentration of Arian Broilers to 28 Days of Age

The experiment was conducted to evaluate digestibility quantities of protein in Canola Meals (CMs) between caecectomised and intact adult Rhode Island Red (RIR) cockerels with using conventional addition method (CAM) for 7 d: a 4-d adaptation and a 3-d experiment period on the basis of a completely randomized design with 4 replicates. Results indic...

Poster presented in 10th Congress of European Association of Clinical Anatomy

Diet components are one of the determination factors for changing of morphology of small intestines which lead to a change in digestien and absorption of nutritiond subs tonces.To study the histomorphometric changes of small intestine due to hull-less barley food diets in poultry, 20, of 70 weeks old healthy Road Island Red cocks were selected and...

This study was conducted to investigate the effects of diets containing different levels of hull-less barley on caecal microflora of broiler chicks. Two hundred and forty one-day old male broiler chicks (Arbor Acres strain) were used in a completely randomized design with 4 tratments, and 3 replicates were allocated to each treatment. Different lev...

آزمایش به منظور تعیین انرژي قابل متابولیسم کنجاله هاي سویا، آفتابگردان و کلزا با دو روش بیولوژي جمع آوري فضولات و محتویات ایلئوم با استفاده از تعداد 200 قطعه جوجه گوشتی جنس نر سویه راس 308 در سن 21 و 42 روزگی صورت گرفت. نتایج نشان داد که میانگین انرژي قابل متابولیسم ظاهري و حقیقی تصحیح شده براي ازت در ،2597 / 2785 ،2734 ،2760 و 2756 کیلوکالري در کی...

The experiment was conducted to determine influence of caecectomy on digestibility quantities of amino acids for soybean (SBM), canola (CM), sunflower (SFM) meals in adult Rhode Island Red (RIR) cockerels with using conventional addition method (CAM) for 7 d: a 4-d adaptation and a 3-d experiment period on the basis of a completely randomized desig...

The experiment was conducted to determine influence of caecectomy on Endogenous Amino Acid Losses (EAAL) in unfed Rohde Island Red adult cockerels. During the experimental period (48 h), excreta of cockerels were collected and dried, ground and assayed for quantities of amino acids. The caecectomy increased (p<0.05) the endogenous quantities of ser...

A completely randomize design with 5 treatments and 6 replicates with 6 broiler chicks in each replicate was conducted to investigate the nutritive value of Dried Tomato Pomace (DTP) on broiler chickens performance and nutrient digestibility. DTP was included in a basal diet at 5, 10, 15 and 20 % and chromic oxide was added to the experimental diet...

The experiments were conducted to determine amino acids digestibility of soybean meal, using two bioassays as collecting ileum content and collecting fecal in male broiler chickens. The xperiments were conducted (with 100 birds) at 21 and 42 days of age, using metabolical cages, as a CRD with 4 replications (2 birds per each replicated). Amino acid...

An experiment was conducted to study the effects of different levels of raw and processed vetch ( Vicia sativa ) seeds on broiler performance. The experiment was carried out in a Completely Randomized Design. Four hundred and seventy six day-old broilers of male Hubbard strain were used. Seven treatments (dietary contain 0, 10, 20 and 30% levels ra...

The experiment was conducted to determine metabolizable energy contents of Soybean (SBM), Canola (CM) and Sunflower (SFM) meals by Conventional Addition Method (CAM) included with intact and caecectomized adult cockerels for 7 day: A 3 day pre-experiment and a 4 day experiment period. The values of SBM and CM obtained using intact cockerels were ap...

The effects of beta-glucanase (550 U g(-1)) and xylanase (800 U g(-1)) supplementation on the nutrient digestibility and metabolizable energy of egg production, egg quality intestinal morphology of the broiler chicks and layer hens fed hull-less barley-based diets were examined in three similar experiments. The results of this study showed that the...

The purpose of the present study was to indicated (evaluate) the effect of hull-less barley dietary on the morphology of the small intestinal wall and ileal microbial activity layer hens fed hull-less barley in diet. The results of experiment shown that the inclusion of hull-less barley in the diet had no effect on the bacterial activity as total c...

An experiment was made to study the effect of the duration of the excreta collection period on the True Metabolizable Energy (TME) values of cereals as wheat, maize and barley and wheat bran. The experiment was performed with 48 mature Cornish and Rhode Island Red (RIR) cockerel strains, under standard conditions. Droppings voided during the experi...

The experiment was performed to study the relationship between apparent and true amino acid digestibility at different levels of feed intake and to compare two procedures, precision feeding and CAM. Rhode Island Red (RIR) adult cockerels were used in the two bioassays, under standard conditions. In the first bioassay (precision feeding) the birds w...

1. Endogenous losses of amino acids (EAAL) and energy (EEL) were determined in unfed adult cockerels. The intercepts of linear regression analysis were determined using 44 birds precision-fed on maize. During the experimental period (48 h), excreta of birds were collected, and the samples of maize and the excreta were dried, ground and assayed for...

As part of a nationwide foodstuffs evaluation plan used by poultry in Iran, various fat by-products from vegetable oil refining factories (acid oils of soya origin) in Iran were analyzed for their AME, AMEN, TME N content. In addition to the effect of variables, i.e., basal diet (maize, barley or wheat), and inclusion rate (50 and 100g/kg) were als...

1. Two experiments were performed to study the relationship between apparent metabolisable energy (AME) and true metabolisable energy (TME) values at different feed intakes. Rhode Island Red (RIR) adult cockerels were used in two bioassays, under standard conditions. 2. In the first experiment (precision feeding) the birds were not fed for 24 h and...

1. Experiments were conducted to determine the differences in the energy utilisation of adult hens and cockerels of a layer (Rhode Island Red) and a broiler line (Cornish). The effect of 2 different precision-feeding methodologies (wet and dry-feeding) were also compared. Birds were fasted for 24 h, precision fed with 35 g dry or 33.5 g wet corn an...