نتایج جستجو برای: grower feed intake
تعداد نتایج: 164229 فیلتر نتایج به سال:
an experiment was conducted to determine the effect of different levels of potato replacing maizeseed on performance characteristicsand immunes system of broiler chicken in a completely randomized design. a total of 220 broiler chicks were randomly assigned to 5 treatment groups, with 4 replicates of 11 birds each. the chicks in the first group were fed basal diet (control), 2nd and 3rd groups ...
This study was conducted to evaluate effects of an organic acid at three levels of dietary electrolyte balances (DEB) on growth performance، acidity and gut microbial population of broiler chickens. A total of 720 as-hatched Ross 308 broilers were used in the study from day 1 old to 40 days of age. The experiment was carried out using a complete block design with factorial arrangement (2×3)....
Two experiments were conducted to investigate the effect of dietary energy levels on the performance of Arian broiler chicks. Trial 1 was performed in summer and trial 2 in fall. Both experiments were accomplished in 5×2 factorial designs, involving 5 levels of dietary metabolizable energy and two sexes. Each of the 10 resulting treatments was replicated 4 and 3 times in trials 1 and 2, respect...
to study the possible use of phytase and yeast (saccharomyces cervisiae) in corn-soy bean meal base diet with different levels of available phosphorous in arbor acers broiler chicks, an experiment was conducted with 264 day old chicks of an average weight of 44.6 grams each. a completely randomized design of 6 treatments and 4 replications (11 chicks per replicate) for periods of starter, growe...
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...
A meta-analysis on the effects of management and animal-based factors on the performance and feed efficiency of growing pigs can provide information on single factor and interaction effects absent in individual studies. This study analysed the effects of such factors on average daily gain (ADG), feed intake (FI) and feed conversion ratio (FCR) of grower and finisher pigs. The multivariate model...
non-starch polysaccharides (e.g.: wheat based diet) which are supplemented with enzymes. could have a high potential in nutrient ingestion, digestion and absorption, however, response to the enzyme is dependent on chicks age, as well as genetic status of both the cereal and the chick. this study was conducted in a completely randomized design in 2×4 factorial arrangement to study the efficiency...
Specialty poultry production is growing, including free-range, organic, and small flocks; however, feed cost is high. Choice feeding, using a high-protein feed with mineral/vitamin supplements provided separately from a grain feed, may allow birds raised in relatively open housing with largely uncontrolled environmental conditions to more precisely meet their nutritional requirements by self-se...
An experiment was conducted with the male Ross broiler chicks from 1 to 42 days of age to test the effects of different dietary protein and lysine levels on performance, carcass characteristics, and N excretion. Treatment diets consisted of three levels of supplemental lysine in starter and grower period (0, 0.15, and 0.30 %) and the two levels of protein (20.84, 17.84 in starter, and 18.12, 16...
Two experiments were conducted to investigate the effect of dietary energy levels on the performance of Arian broiler chicks. Trial 1 was performed in summer and trial 2 in fall. Both experiments were accomplished in 5×2 factorial designs, involving 5 levels of dietary metabolizable energy and two sexes. Each of the 10 resulting treatments was replicated 4 and 3 times in trials 1 and 2, respect...
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