B. Navidshad
Department of Animal Science, University of Mohaghegh Ardabili, Ardabil, Iran
[ 1 ] - Garlic: An Alternative to Antibiotics in Poultry Production, A Review
In last decade, the uncontrolled use of antibiotics as growth promoter for livestock has led to the appearance of antibiotic-resistant pathogens and increased risk of infectious diseases. This situation has triggered intensive research efforts to find safe alternative strategies. Certainly, the plants and vegetables and their derivatives as natural safe substances could be good candidates in th...
[ 2 ] - The Importance of Arsenic, Vanadium, Cobalt and Strontium in Poultry, A Review
Any deficiency in trace element content of commercial poultry diets will decrease their performance. To prevent this situation it is necessary to supplement trace minerals in poultry diets to allow the modern birds to reach their genetic potential. The NRC publication as the most famous reference for livestock and poultry nutrients requirement has no recommendation for some less needed trace mi...
[ 3 ] - The Metabolizable Energy Content and Effect of Grape Pomace with or without Tannase Enzyme Treatment in Broiler Chickens
Two experiments were conducted to determine the chemical composition, metabolizable energy content and effect of grape pomace (GP) with or without tannase enzyme treatment on growth performance of broiler chickens. In experiment 1, the apparent metabolizable energy (AME) and apparent metabolizable energy corrected for nitrogen (AMEn) of GP were determined as 2642.19 and 2641.08 kcal/kg, respect...
[ 4 ] - The New Progresses in Zn Requirements of Poultry
There were no considerable up to date on the trace element requirements of commercial poultry in recent years in despite of the progress in their performance traits. One of the more prevalent problems in modern broiler production system which could be attributed to the trace mineral inadequacy is skeletal disorders. Zinc, is an essential trace element which acts as a co-factor in several metalo...
[ 5 ] - Metabolic Effects of Polyunsaturated Fatty Acids in Chickens: A Review
Chicken has been used as a suitable model for lipid metabolism studies, because dietary modifications especially dietary fat type can change chicken body composition. Fats act as a condense source of energy and certain fatty acids such as polyunsaturated fatty acids (PUFAs) are required for both animal and human health. The n-3 PUFAs, especially, eicosapentaenoic acid (EPA) and docosahexaenoic ...
[ 6 ] - Evaluating in vitro dose-response effects of Lavandula officinalis essential oil on rumen fermentation characteristics, methane production and ruminal acidosis
Four in vitro experiments (Exp.) were conducted to evaluate lavender essential oil (LEO) effects at 0 (control), 250 (low dose), 500 (medium dose), 750 and 1000 µL per L(high doses) of incubation medium on rumen gas production kinetics (Exp.1), ruminal digestibility and fermentation (Exp.2), methane production (Exp.3) and rumen acidosis (Exp.4). The asymptote of gas production (A) incr...
[ 7 ] - اثر روغن ماهی کیلکای دریای خزر بر لیپوپروتئین‌های سرمی، عملکرد تولید و غنی شدن گوشت با اسیدهای چرب اٌمگا–3 در جوجه‌های گوشتی
زمینه مطالعه: استفاده از منابع غذایی غنی از اسیدهای چرب اٌمگا–3 در غنی سازی گوشت طیور همواره مد نظر پژوهشگران بوده است. هدف: این مطالعه به منظور بررسی اثر روغن ماهی کیلکای دریای خزر (Clupeonella cultiventris) و ترکیب آن با روغن سویا بر غنی سازی گوشت جوجه‌های گوشتی با اسیدهای چرب نوع اٌمگا–3 طراحی شد. روش کار: دویست و چهل قطعه جوجه یکروزه مخلوط هر دو جنس از سویه تجاری راس 308 طی 11 تا 42 روزگ...
[ 8 ] - اثر تزریق داخل تخم مرغی عصاره چای سبز و هیدروکلراید فدرازول بر تغییر جنسیت و ساختار ماهیچه ای جوجه های گوشتی
In the present study 252 fertile eggs from Ross 308 strin broiler breeders flock were divided into three experimental group and at 5th day of incubation period were in ovo injected into the air cell by 0.1 ml of green tea extract, fadrozole hydrochloride or distilled water. The hatched chickens then were arranged based on the experimental groups of incubation period in a completely randomized d...
[ 9 ] - بررسی چندشکلی نواحی پروموتور و اگزون ژن HSP70 و ارتباط آن با صفات تولیدمثلی بوقلمون‌های بومی ایران
Heat shock proteins of 70 kDa (HSP70) are a natural protector of the cell during heat stress through maintaining cell homeostasis and preventing proteins from denaturation, especially in stressed conditions. In addition, HSP70 widely influence growth and reproduction traits. The present study objected to identify polymorphisms in regions of promoter and part of exon 1 of HSP70 gene and their as...
[ 10 ] - Dietary Garlic Powder Supplementation Could Ameliorate Unfavorable Effects of Choline Deficiency on the Liver Health and Immune System of Broiler Chickens
Effects of different levels of choline and garlic powder on performance, liver health and immune response in broiler chickens were evaluated in this study. A factorial experiment with 2 dietary choline levels (the recommended level in Ross 308 broiler guidelines and 25 % less than the recommendation) and 3 dietary garlic powder levels (0, 5 or 10 g/kg diet) was conducted using Ross 308 broiler ...
[ 11 ] - The New Progresses in Trace Mineral Requirements of Broilers, a Review
Since 1994 till today a few up to date have been made on the NRC (1994) recommendations for trace mineral requirements of broilers. The high prevalence of skeletal disorders in modern broilers could be a consequence of the uncoordinated growth rate and mineral nutrition. The commercial companies of broiler production often use a huge safety margin of trace minerals in feed formulation, which wi...
[ 12 ] - Effect of in ovo Injection of Nicotonic Acid, Pantothenic Acid or Folic Acid on Immune System and Growth of Broiler Chickens
BACKGROUND: In ovo injection of nutrients as an early feeding method in birds directly supplies the nu- trients to the developing embryo. OBJECTIVES: This study was designed to evaluate the effects of in ovo injection of nicotonic acid, panto- thenic acid and folic acid on the performance and immune system of broilers. METHODS: </st...
[ 13 ] - The Effect of in ovo Injection of Aromatase Inhibitors on the Performance of Broilers
Change in sex ratios for broiler chickens, has many economic benefits of the poultry industry. The gonads in chick embryo at an early stage have the potential to convert to both sexes (male and female). Sexual differentiation is due to aromatase expression in the left gonad in 5-6 days of the embryonic period and the production of estrogen from testosterone. Administration of aromatase inhibito...
[ 14 ] - Effect of Different Levels of Cottonseed Meal Bioactive Peptides on Production Efficiency and Serum Antioxidant Activity of Broiler Chickens
Cottonseed meal was hydrolyzed using five types of enzymes: alkalase, chymotrypsin, pepsin, trypsin, and pancreatin. The experiment was carried out using 240 male broilers of Ross 308 strain in a completely randomized design with 4 treatments and 5 replications from 1 to 35 days of age and during the starter (1-15 days) and grower (16-35 days) phases. The experimental diets were the control die...
[ 15 ] - Nutritional value of feed consumed by buffaloes under stable conditions and grazing from the rangelands of the main habitats of buffalo breeding in different climate zones of Ardabil province
Background and objectives: Regular preparation of good quality forage and proper diet leads to cost-effective production of milk and meat. In Iran, insufficient supply and insufficient access to forage, as well as unbalanced consumption diets are the main limitations that negatively affect the ability to produce buffalo and therefore lead to uneconomical breeding of this animal. To overcome the...