The objective of this research was to evaluate yield parameters (gained weight, weight percentage, survival, feed conversion factor (FCR), feed conversion efficiency (FCE), condition factor (K), specific growth rate (SGR) and hepatosomatic index (HSI) of trouts fed with experimental diets elaborated with bean (Phaseolus vulgaris L.) flour instead of fishmeal with 15, 30 and 45% (BF15, BF30 and ...

In a dose-response study, dietary levels of standardized ileal digestible methionine (dMet), lysine (dLys), and threonine (dThr) were optimized by response surface methodology (RSM) using a central composite rotatable design in starting broiler chicks that were feed-deprived 2 d posthatch. In total, 60 floor pens of 6 birds each were assigned to 15 diets of central composite rotatable design co...

A meta-analysis, using information from 45 experiments on growing-finishing pigs published in 39 manuscripts, was carried out to determine the simultaneous effects of the physical environment (space allowance, group size, flooring conditions, temperature, presence of enrichment), pig traits (initial body weight (BW) for each studied time interval, sex, genetics), feeder characteristics (water p...

The genetic and phenotypic associations between performance and feed intake traits of finished gilts (GFI), along with their subsequent reproductive performance and feed intake during lactation (LFI), were estimated using data collected from two maternal lines recorded under the same management system. Ad-libitum feed intake was heritable (h: 0.33±0.08) when recorded in post-finisher gilts or d...

The experiment was designed and conducted to evaluate the effect of methionine, betaine and choline in the broiler chicks given low methionine starter ration. Day old broiler chicks (n=250), were randomly divided into five treatment groups (n=5) with five replicates of ten chicks. A low methionine (LM) starter ration was formulated and the treatment groups were (A) LM supplemented with methioni...

AIM An experiment was conducted to evaluate the effect of supplementing different levels of salts of organic acid in the laying hen's diet on their production performance and egg quality parameters during a period of 16-week. MATERIALS AND METHODS A total of 140 white leghorn laying hens at 24 weeks of age were randomly distributed to seven dietary treatment groups, i.e. T1 (control), T2 (0.5...

A study was carried out to investigate the effects of energy and protein levels on performance of Cobb Avian 48 broilers to 36 d. Chicks were randomly assigned to a 2 × 2 × 3 × 5 factorial arrangement of treatments, with 2 sexes; 2 levels of early nutrition (0 to 11 d); and after 11 d, 3 metabolizable energy (ME) levels and 5 dietary balanced protein (DBP) levels, balanced for 4 limiting amino ...

a chick bioassay with chemically defined amino acid (aa) diets was conducted to compare four different aa profiles: the nrc (1994), feed stuff, rhone poulenc animal nutrition (rpan) and illinois ideal chick protein (iicp) aa profiles. this battery study involved male and female chicks during grower (21 to 42 days of age) period. indispensable aas were rationed to lysine according to requirement...

In the fish farming business, feed is highest operational cost, which reaches more than 60% of total production cost. Therefore, can be processed independently to reduce costs in aquaculture businesses. This study aimed determine survival rate and efficiency red tilapia (Oreochromis sp) fed artificial with addition seaweed (Gracilaria sp). research was carried out from June September 2021 at In...

the aim of this study was to compare the effects of three antibiotic alternatives with a control (antibiotic-free) and an antibiotic diet on performance and gut morphology of broilers reared on litter. 600 day-old ross-308 chicks were assigned to 48 pens in a crd design with 6 × 2 factorial arrangements, in which 2 levels of chick density (5 and 7.5 chicks/m2) and 6 experimental diets (control,...