نتایج جستجو برای: 4 replicates and 12 birds per replicate for 12 weeks 65

تعداد نتایج: 19303319  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده زیست شناسی 1388

126 abstract: in this research we studied the effects of cyclic hydration and dehydration of cysts of artemia urmiana and artemia parthenogenetica on the hatching percentage, survival and growth. the experiment was carried out in 3 treatments (1-3 hydration/dehydration cycles) with 3 replicates for each treatment. later effects of cold preservation at -20°c during three time periods were ...

زره داران, سعید, شمس شرق, محمود, ضرابی, مهدی, غلامی, حمید,

     Current experiment was conducted to determine the effect of different levels of earthworm meal (Eisenia fetida) on performance, carcass characteristics and blood parameters of broiler chickens. For this purpose, a completely randomized design with four levels of earthworm meal as treatments (0, 2%, 4% and 6%) using 96 day old Ross male chicks were performed. Each treatment consisted of 4 r...

Journal: :Poultry science 2010
D R Jones K C Lawrence S C Yoon G W Heitschmidt

Cracks in the shell surface compromise the primary barrier for external microbial contamination of the egg. Microcracks are very small cracks in the shell surface that are difficult to detect by human graders. New technology has been developed that uses modified pressure and imaging to detect microcracks in eggs. Research has shown the system to have an accuracy of 99.6% in detecting both crack...

Journal: :iranian journal of applied animal science 2013
a.a. sadeghi w. izadi p. shawrang m. chamani m. aminafshar

this study was conducted to assess the effect of ginger supplementation on malondialdehyde (mda) level, as an oxidative stress marker, and total antioxidant capacity (tac) in broiler chicks. two hundred male 1-day-old chicks were assigned randomly to four dietary treatments (basal diet as control group and basal diet containing 2.5, 5.0 and 7.5 g/kg ginger, respectively), with five replicates a...

Journal: :تولیدات دامی 0
محمد یازرلو کارشناس ارشد گروه علوم دام و طیور، پردیس ابوریحان، دانشگاه تهران، پاکدشت ـ ایران داود شریفی دانشیار گروه علوم دام و طیور، پردیس ابوریحان، دانشگاه تهران، پاکدشت ـ ایران فرید شریعتمداری استاد گروه علوم دامی، دانشکدۀ کشاورزی، دانشگاه تربیت مدرس، تهران ـ ایران عبدالرضا صالحی دانشیار گروه علوم دام و طیور، پردیس ابوریحان، دانشگاه تهران، پاکدشت ـ ایران

in order to determine the optimal levels of energy and protein in grower diet of japanese quail, 360 dayold japanese quails were used in a 3×3 factorial arrangement of dietary treatments that comprised threelevels of metabolisable energy (2750, 2850, and 2950 kcal/kg) and three levels of crude protein (24, 26and 28 percent) with four replicates per treatment in a completely randomized design. f...

Journal: :علوم دامی ایران 0
سودابه مرادی دانشجوی دکتری پردیس کشاورزی و منابع طبیعی دانشگاه تهران مجتبی زاغری استاد پردیس کشاورزی و منابع طبیعی دانشگاه تهران محمود شیوازاد استاد پردیس کشاورزی و منابع طبیعی دانشگاه تهران رحیم عصفوری عضو هیأت علمی پژوهشکده بیوتکنولوژی کشاورزی کرج (abrii) محسن مردی عضو هیأت علمی پژوهشکده بیوتکنولوژی کشاورزی کرج (abrii)

this experiment was conducted to determine the effects of either twice or thrice a day feeding regimens on performance and as well on plasma hormone and metabolite levels of broiler breeder hens during 24 to 38 wk of their productive age. breeder pullets were provided form a commercial flock, and distributed in experimental units, in a compeletly randomized design with three feeding regimens (t...

Journal: Journal of Herbal Drugs 2013
Hossein Ansari Nik Mahmod Ghazaghi, Omid Fani Makki,

Background & Aim: Medicinal plants is very potential to be used as a supplementary feed as well as feed additive in broilers.This experiment was conducted to investigate the effects of milk thistle (MT) and thyme seeds (TS) on the performance in broilers. Experimental: In this study, 160 one-day-old (Ross 308) male broiler chicks were divided randomly into four major groups with 4 replicates b...

2015
Sultan Mahmood Atif Rehman Muhammad Yousaf Pervez Akhtar Ghulam Abbas Khawar Hayat Aisha Mahmood Muhammad Khurram Shahzad

The study was planned to determine the comparative efficacy of leaf extract of Azadirachta indica, Cichorium intybus and Moringa oleifera, on haematology, intestinal histomorphology and nutrient digestibility in broilers. Day old broiler chicks (n=180) purchased from a commercial hatchery were reared in a group for one week (adaptation period). At day 8, these birds were individually weighed an...

Journal: :Aquaculture International 2021

Abstract Sturgeons are an economically important freshwater aquacultural fish in China and elsewhere. Research was conducted to study the magnesium requirement of juvenile hybrid sturgeon ( Acipenser schrenckii ♀ × baerii ♂) based on mineral composition, proximate chemical analysis, antioxidant enzyme levels, growth metrics. Different levels supplements (43.2, 157.3, 326.5, 549.6, 743.9, 938.4,...

The purpose of this study was to compare effects of the different types of feed additives consumption including probiotics, prebiotics and synbiotics in Japanese quails. A total of 384 Japanese quail chicks were randomly assigned to 8 treatments with 4 replicates and 12 birds per replicate (cage). The experimental diets (treatments) were included: Basal diet without additive (control) and prote...

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