نتایج جستجو برای: 42 d period
تعداد نتایج: 1128042 فیلتر نتایج به سال:
A 42-d trial was conducted with 252 broiler chickens (d 1 of age, 38.8 +/- 1.3 g of BW) to determine the effects of Forsythia suspensa extract on growth performance, nutrient digestibility, and antioxidant activities under high ambient temperature (32 +/- 1 degrees C). The feeding program consisted of a starter diet from d 1 to 21 of age and a finisher diet from d 22 to 42 of age. Dietary treat...
A total of 700 day old female broiler chicks (Ross 308) were distributed into seven groupsin acompletely randomized designwith five replicates, and 20 chicks in each replicate. Dietary treatments, timeof the switch from an unsaturated sunflower oil (SFO) to a saturated tallow (T)dietary fat source, were: 1) SFO for the entire growth period (6 weeks), 2) SFO for 5 weeks followed byT for last wee...
A total of 600 avian male broilers at the age of 1 d were used to investigate the effects of cysteamine (CSH) on growth performance, digestive enzyme activities, and concentrations of serum hormones. The broilers received the same basal diets, with CSH added at 0 (control), 60, 90, 120, or 150 mg/kg. The feeding program consisted of a starter diet until 21 d and a grower diet until 42 d. The br...
Abstract A total of 3,888 pigs (337×1050, PIC, Hendersonville, TN; 6.0 kg at weaning) were used in a 42-d study to determine the influence Se source on nursery pig selenium status and growth performance. At placement, pens weighed allotted 1 3 dietary treatments randomized complete block design with blocking structure including sow farm origin, date entry, average pen BW. 144 72 double-sided 5-...
Tiamulin, a semisynthetic antibiotic, was fed to growing pigs and its value in maintaining weight gain and feed efficiency in the face of mycoplasmal pneumonia was determined. Four treatments divided among 64 growing pigs from a conventional pig farm were used to test the effects of tiamulin administered in feed at levels of 10, 20 and 30 ppm. All pigs were artificially infected with Mycoplasma...
The aim of this study was to investigate the effects of in ovo injections of albumin, ami-no acid and dextrose into the amnion on the hatchability, growth performance and slaughter yield of Ross 308 broiler chicks. Fertile eggs (n=360) were assigned to 6 treatment groups (4 replicates of 15 eggs each) including: non-injected eggs (control), and eggs injected with 0.7 ml distilled water (sham), ...
This study was conducted to evaluate the effects of lavender (Lavandula angustifolia)extract as an alternative to flavophospholipol on performance, carcass characteristics, antioxidant status,meat quality, intestinal morphology and ileal microflora of broilers. A total of 220 day-old male broiler chicks (Ross 308) were used in a completely randomized design with five treatments each re...
ABSTRACT To evaluate the effects of temporary dietary lysine restriction on nursery pigs’ growth performance and its economic viability compared to control diets, 144 piglets (21-d-old) were assigned randomized blocks, with two treatments twelve replicates. The control-lys: level as recommended from 21-32 32-42 days low-lys: 90% control-lys diets. From 42 62 days, all animals received a diet. 2...
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