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feed conversion; strain differences; water temperature; feed intake; Ictalurus punctatus; blood plasma; body fat
Abstract:
... Channel catfish from two strains, USDA-103 and Norris, were reared in circular 800-l tanks and injected once weekly with 2.5 microgram recombinant bovine growth hormone (rbGH) per gram body weight, or the saline vehicle. In addition to the rbGH, and strain treatments, half the tanks were supplied with well water of 26.0 degrees C and the other half received water of 21.7 degrees C. Growth rate, pl ...
... Male and female Pekin ducks selected (F2 generation) for greater breast muscle thickness (MT) and an unselected control (C) were used in this study under mixed- or separated-sex rearing. Ducks in the separated-sex program had significantly higher body weights than the birds in the mixed-sex program. The ducks selected for greater breast muscle thickness exhibited superior (P < 0.05) body weight up ...
chickens; weight; bursa of Fabricius; antibody formation; zinc; feed conversion; thymus gland; Salmonella Typhimurium; aflatoxin B1; selenium; liveweight gain; spleen; intraperitoneal injection; dietary minerals; chicks; aflatoxicosis; dietary mineral supplements
Abstract:
... The effects of four diets (basal diet, Se, Zn, and Se- and Zn-enriched diets) fed to chicks that were administered one of three treatments [Salmonella and aflatoxin inoculation (T1), Salmonella inoculation (T2), or uninoculated (T3)] were investigated for growth and immune responses. We found a significant improvement in growth performance represented by relative body gain (RBG) and feed efficienc ...
... This study was designed to evaluate the relative toxicity of (+)- and (-)-gossypol enantiomers in 0-3-week-old broilers. Treatments consisted of broiler starter diets formulated with either a glandless, which did not contain gossypol, a commercial glanded [62.2% (+)-gossypol], or a glanded moco [83.2% (+)-gossypol] crushed cottonseed (CCS) (six replicates/treatment) plus a soybean meal negative co ...
energy content; feeds; concentrates; soy protein; feed conversion; nutrient uptake; liveweight gain; rapeseed protein concentrate; feed intake; ingredients; palatability; protein content; fish meal; fish feeding; body fat
broiler chickens; dietary protein; ambient temperature; heat stress; crude protein; amino acids; feed intake; protein intake; body weight; liveweight gain; feed conversion; breast muscle; abdominal fat
Abstract:
... The effects of two environmental temperatures (22 and 32 C, constant) and five dietary protein contents (10 to 33% CP) were investigated in 4- to 6-wk-old broiler chickens. High ambient temperature reduced growth rate, feed efficiency, and breast muscle proportion and increased abdominal fat proportion. Irrespective of ambient temperature, increasing dietary protein content improved growth perform ...
dietary protein; feed conversion; Percichthyidae; developmental stages; lipids; protein intake; water content; protein content; fish feeding; carcass composition; Victoria (Australia)
... 1. The effect of dietary vitamin E, selenium (Se) and their different combinations on body weight gain, food consumption, food conversion efficiency, leukocyte migration inhibition and antibody production was determined in broilers. 2. Chicks were fed on maize-soya bean based diets with concentrations of supplemental vitamin E varying from 0 to 300 IU/kg and selenium concentrations varying from 0 ...
liver; feed conversion; feeding frequency; muscles; Sebastes; pelleted feeds; body composition; liveweight gain; lipids; water content; feed intake; protein content; fish feeding; gastric emptying
Abstract:
... A 7-week feeding experiment was conducted to determine the optimum feeding frequency for growth, body composition and gastric evacuation of the juvenile Korean rockfish. Three replicate groups of the fish (average weight of 5.7 g) were fed to visual satiety either dry pellets (DP) or moist pellets (MP), at different feeding frequencies (two meals a day, one meal a day or one meal every 2 days). At ...
... Twenty Sex Sal cockerels were randomly assigned to each of eight groups; each of four nutritionally balanced diets were fed to two groups from 1 d through 4 wk of age. These diets contained 0, 2, 5, or 10% stabilized flaxseed meal that provided a calculated 0, 0.45, 1.11, or 2.22% n-3 fatty acids, primarily linolenic acid. At 3 wk of age, one group of chickens from each diet treatment was infected ...
... A study was conducted to determine the cumulative effects of phosphorolytic enzymes, cell wall-degrading enzymes, and citric acid and Ca levels on feed intake, BW gain (BWG), feed conversion, intestinal viscosity, and toe ash of broilers (d 1 to 21) fed wheat-based diets. Broilers were fed the following six diets at either 0.59, 0.69, or 0.79% Ca: 1) a negative control (NC) diet, 0.17% available P ...
... Broiler hatching eggs were subjected to one RH condition (53% RH) from 0 to 16 d and switched to one of three different RH conditions (43, 53, or 63%) from transfer at 16 d to pull time at 21.67 d of incubation. The broiler breeder ages were 27, 29, and 31 wk for Trial 1, and 26, 28, and 30 wk for Trial 2 in Experiment 1. For both trials, BW at hatch, BW at pull, hatch time, and chick weight loss ...
... Artemisia abyssinica leaves, a traditional medicine for the treatment of various disorders, were fed to male Wistar rats at 2% and 10% of the standard diet for 6 weeks. A 2% A. abyssinica leaf diet was not toxic to rats. Depression in growth, hepatopathy and nephropathy were observed in rats fed a diet containing 10% of A. abyssinica leaves. These findings were accompanied by leukopenia, anaemia a ...
water flow; velocity; length; body weight; liveweight gain; feed conversion; feed intake; body composition; lipids; muscles; chemical composition; Paralichthys olivaceus
turkeys; neomycin; Escherichia coli; drug toxicity; dosage; mortality; liveweight gain; feed conversion; body weight
Abstract:
... The objective of this investigation was to evaluate the efficacy, safety, and toxicity of neomycin sulfate (Neomix 325) water medication to control mortality associated with colibacillosis (Escherichia coli) in growing turkeys. One efficacy trial was conducted at five locations; each location included 2,880 sexed 21-d-old turkey poults that were naturally challenged with litter from turkey flocks ...