ABSTRACT The experiment aimed to assess the impact of exogenous protease in diets formulated with soybean meal (SBM) or black soldier fly larvae meal (BSFLM) on nutrient retention and broiler performance. Forty-eight female Ross 308 chicks were assigned to a randomized block design study using a 2 × 2 factorial arrangement, with four treatments in total. The main factors considered were the protein source and the presence or absence of protease. Each experimental diet was fed to six pens of […]

ABSTRACT This study evaluated increasing dietary levels of Black wattle bark extract (BWE) on broiler performance, nutrient digestibility, intestinal histopathological score, and bone quality. A total of 240 male Cobb 500 broilers, eight days old, were distributed into five dietary treatments (0, 300, 500, 700, or 900 mg kg−1 BWE) in a randomized block design, housed in metabolic cages, with eight replicates of six birds each. Performance was evaluated from 8 to 28 days of age, nutrient digestibility from 18 […]

ABSTRACT This study investigated the diet of laying hens containing selenium in organic, inorganic, and Se-Met complex encapsulated with chitosan was investigated in order to enrich eggs and their oxidative stability. The microencapsulation process was performed using two molecular weights of chitosan (150 and 250 kDa) and the ratio of chitosan to Se-Met (1:1.5 and 1:2) in order to achieve the best encapsulated selenium according to evaluation of particle size, zeta potential, and encapsulation efficiency. Subsequently, 450 Hy-Line W36 laying […]

ABSTRACT This study evaluated the effects of xylanase combined with increasing amylase levels in broiler diets containing protease and phytase on performance, intestinal histomorphology, cecal short-chain fatty acid profile, serum interleukin (IL) levels, and economic viability over a 28-d period. A completely randomized experimental design was adopted in a 2 × 3 + 1 factorial arrangement (100 or 200 U kg−1 amylase × 0, 1,000 and 2,000 U kg−1 xylanase + positive control (PC), without enzymes), with seven replicates of […]

ABSTRACT This study evaluated the effects of supplementing drinking water with an acidifier blend on growth performance, serum biochemical profile, and gastrointestinal microbial counts of broilers. A mixture containing phosphoric, citric, and tartaric acids was supplied at 0, 60, or 150 mL/1000 L of drinking water during specific production phases. A total of 320 Cobb male broilers were allocated in a completely randomized design with eight replicates of 12 birds each. The acidifier progressively reduced drinking water pH values (5.54, […]

ABSTRACT The study was carried out with the objective of investigating the enrichment of weaned piglet diets with selenium proteinate (SeP) and sodium selenite (SeS) at two inclusion levels. A total of 40 piglets, averaging 6.60 ± 1.06 kg, were assigned to five dietary treatments: a control diet, and diets supplemented with selenium proteinate (0.15 or 0.30 mg/kg) or sodium selenite (0.15 or 0.30 mg/kg). The SeP-0.30 diet reduced average daily feed intake (ADFI) (P

ABSTRACT The aim of the study was to evaluate the inclusion of carotenoids in the diet of layers on the production performance, quality and oxidative stability of eggs during storage. A total of 240 Dekalb White laying hens, 76 weeks of age, were used. The hens were allocated in completely randomized design with eight diets (control diet (CD); astaxanthin (AXT), 10 mg kg⁻1; lutein (LUT), 10 mg kg⁻1; lycopene (LYC), 10 mg kg⁻1; AXT + LUT, 10 mg kg⁻1 each; […]

ABSTRACT The effects of dietary supplementation with enzymatic complexes and plant extracts on weaned piglets were evaluated. Sixty piglets (28 days old) were assigned to six treatments: Control diet (CD); CD with 125 g/ton of Yucca schidigera extract (CDY); CD with 200 g/ton of enzymatic complex (CDE); CD with 400 g/ton of multi-enzymatic complex with emulsifier (CDME); CDE + 125 g/ton YSE (CDE+Y1) and CDE + 250 g/ton YSE (CDE+Y2). Piglets on the CDE+Y1 diet had better feed conversion ratio […]

ABSTRACT The objective of this study was to evaluate the inclusion of high-protein dried distillers’ grains (HP-DDG) in broilers’ diets. A total of 1,200 one-day-old male chicks were weighed and distributed among six treatments, with ten replicates of 20 birds each. The experimental period was divided into three phases: starter (1–21 days), grower (21–33 days), and finisher (33–43 days). The treatments consisted of six dietary levels of HP-DDG in the starter, grower, and finisher phases as follows: T1: 0%; T2: […]

ABSTRACT This study aimed to evaluate the effects of lysine (Lys) restriction on compensatory growth, body composition, and nitrogen balance of growing-finishing pigs before and after immunocastration. Sixty-four entire male pigs (39.2 ± 6.8 kg) were randomly assigned one of four treatments: Control diet (CON; no restriction) or diets with restriction of Lys level in 14 (Lys-14), 28 (Lys-28) and 42% (Lys-42) of estimated Lys requirements for entire growing pigs (Lys restriction phase, from 0 to 28 d). From 29 […]