نتایج جستجو برای: 14 and 21 days of age decreased daily weight gain and feed intake significantly p
تعداد نتایج: 24281699 فیلتر نتایج به سال:
this study investigated the potential role of age in inductive and deductive grammar learning among iranian foreign language learners. the experimental population consisted of our randomly selected samples including two groups of children (with age of exposure to english within 8-13), and two groups of adults (with age of exposure to english within 11-13). thus, the comparison was between ch...
The present study was designed to study the chemical composition, apparent and true metabolizable energy values of the walnut meal and to evaluate the effects of different levels of walnut meal (0, 10, 20 and 30%) on Japanese quail's growth performance, blood metabolites, relative weight of different organs, malondialdehyde (MDA) concentration in breast meat and egg yolks' cholesterol. This stu...
an experiment was conducted to evaluate the effect of dietary crude protein and methionine levels on quality and quantity of egg production. fifteen diets formulated with 3 levels of protein (13, 14 and 15%) and 5 levels of methionine (0.25, 0.28, 0.31, 0.34 and 0.37%) and fed to 420 birds in a 3×5 factorial arrangement. each diet was randomly fed to 4 replicates of 7 birds each and fed for 3 p...
background: in nature, there are herbal extracts, while capable of reducing aflatoxin b1 in agricultural product by different mechanisms, may also act as growth promoters. objectives: in this study, aqueous extract of t. daenensis was evaluated to detoxify contaminated feed with aflatoxin b1 and to determine the effect of growth promoters in japanese quail. methods: to this purpose, at 24 d of ...
this experiment was conducted to evaluate the effect of vitamin premix withdrawal from diets containing different energy levels on growth performance and carcass characteristics of broilers subjected to heat stress in a completely randomized design with 2×3 factorial arrangement containing, 2 levels of energy (low and high energy) and 3 levels of vitamin premix withdrawal (28, 35 and 42 days). ...
The experiments were conducted to determine the apparent metabolizable energy of Acacia mangium leaf meal (AMLM) and effect on growth performance carcass composition broiler chickens (Arbor acres). Twenty-four at age 24 days divided into 2 groups with four replications two raised individually in a cage. AMLM-feeding chicken was 2,359.90 kcal/kg. Experimental diets consisted AMLM 0%, 2.5%, 5%, 7...
the purpose of this experiment was to investigate the effect of metabolizable energy (me) levels, feed restriction (fr) intensity and duration in pelleted diet on performance, blood parameters and carcass characteristics in broiler chickens. a total of 480 male ross 308 broilers were used in a 2×2×3 factorial arrangement with 12 treatments and 4 replicates. experimental treatments included: two...
for determination and comparison between feeding value of rape silage and its hay, two groups of seven head weaned lamb with the same body weight and breed were fed for a 100 days period of these feeds and a same amount of barley as a nutritive supplement. each animal was fed approximately 130gr of crude protein and 1730 kcal net energy (nrc standard recommendation 1985). the animals were weigh...
in this research to evaluate the effects of probiotic on the growth and some serum biochemical parameters of growing native kid’s, 24 kid’s, with 19.2± 0.7 kg body weight and 120± 10 days of age were used in a completely randomized design with four treatments and six repeats. these four groups included: 1- the control group was fed on a basal diet (without probiotic or yeast). 2- the second gr...
This study was carried out to evaluate the effects of Satureja khuzistanica essential oils (SKEO) on performance, serum metabolites and differential counts of white blood cells in broiler chickens. A total of 280 one-day-old straight-run Cobb 500 broiler chickens were allocated into seven treatment groups with four replicates of 10 birds each from day 1 to 42 of age. The birds were continuously...
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