نتایج جستجو برای: improved the feed conversion ratio p
تعداد نتایج: 16329990 فیلتر نتایج به سال:
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...
This experiment was conducted to study the effects of two kinds of sodium and calcium bentonite (NaB and CaB) on performance, blood biochemical parameters, carcass characteristics and tibia ash of broiler chickens. Two hundred and sixty day old broilers of male Ross 308 strain were allocated to 5 treatments with four replicatates and 13 broilers in each. The experiment was carried out in a comp...
An experiment was carried out to evaluate and compare the effects of organic and inorganic selenium (Se) sources on broiler male birds (Ross 308). Uniform broiler male chicks divided in to five groups with six replicates were fed with either normal feed (without supplemental Se, negative control), 0.25 ppm of inorganic Se, 0.5 ppm of inorganic Se, 0.25 ppm of inorganic Se + 0.25 ppm of organic ...
this experiment was carried out using 200 ross 308 broiler chickens in a completely randomized design with 5 treatments and 4 replicates. the true metabolisable energy of the barley hulls were determined using cecectomized roosters.the dry matter, true metabolisable energy, ash, ether extracts, crude protein, crude fiber, ndf, adf, ca and total p content of barely hulls were: 92%, 978 kcal/kg, ...
There are many studies on the effects of probiotics on performance of broiler chickens, but none of them has evaluated the metabolizable energy (ME) equivalency values of probiotics. The aim of this study was to determine the metabolizable energy equivalency value of Bacillus subtilis spore and its potential for decreasing feed ME content and cost. One hundred seventy-six day-old male broilers ...
This study was conducted to evaluate the effects of dietary supplementation with cinnamon powder, cinnamon oil, and synbiotic as growth promoter agents on growth performance, blood parameters, and intestinal microbial populations in Japanese quails. A total of 420 one-day-old Japanese quails were randomly assigned to 7 treatments with 4 replicates. The dietary treatments consi...
Inorder to evaluate the effects of four sources of fiber (soy hulls, barley hull, rice husk and corn husks) each with two particle size (with 1 and 2- mm of geometric mean) on performance, nutrient digestibility, some blood parameters, small intestine morphology and secum bacteria in broiler chicken, 540 Ross308 broiler male chicks from 1 to 42 days were used in a completely randomized design w...
background: comparison between infectious bursal disease vaccines. objectives: comparison between foreign and iranian intermediate uncloned gumboro vaccines on feed conversion ratio. methods: three hundred and thirty day-old chicks were purchased and for determination of vaccination time by deventer formula, thirty chicks were randomly bled and the remaining chicks divided into 3 equal groups, ...
the effects of methanolic extract and leaf powder of artemisia annua were studied on performance, cellular and humoral immunity in 240 cobb broiler chicks in a completely randomized design. control group did not receive any treatment. the chicks in the second and third groups were fed with feed which contained 2000 and 4000 ppm plant extract in diet and in the groups 4, 5 and 6 chicks received ...
The experiment was carried out using 200 Ross 308 broiler chickens in a completely randomized design with 5 treatment and 4 replicates. The experimental diets were consisted of a control free hulls diet and four diets containing 0.75 or 1.5 percent rice hulls with particle sizes of less than 1 mm or between 1-2 mm. The performance traits were determined through 42 d experimental period and car...
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