ABSTRACT This research aimed to evaluate the chemical composition and apparent digestibility coefficients (ADC) of dry matter (DM), gross energy (GE), crude protein (CP), and amino acids (AA) in plant and animal protein sources used in aquafeeds for tambaqui (Colossoma macropomum). Tested ingredients were soybean meal (SBM), cottonseed meal (CSM), corn gluten meal (CGM), fish meal (FM), meat and bone meal (MBM), and poultry by-product meal (PBM). A reference diet was formulated to contain 287 g kg−1 CP and 18.5 […]

ABSTRACT This study aimed to assess the productive performance and carcass characteristics of feedlot lambs fed corn grain silage rehydrated with different solutions. Twenty-eight Santa Inês ram lambs, approximately 75 days of age and with an average weight of 17.05±3.75 kg, were randomly assigned to one of four dietary treatments: dried corn grains (control); whey-rehydrated corn grain silage; water-rehydrated corn grain silage; and water + additive-rehydrated corn grain silage. For animal performance, dry matter intake, average daily weight gain, and […]

ABSTRACT This study aimed to evaluate the development of the gastrointestinal tract and organs in 18-days embryos (ED18) and newly hatched chicks from broiler breeders supplemented with conjugated linoleic acid (CLA), as well as the development of their progeny up to 7 days of age, which also received CLA supplementation in the pre-placement diet during the first 12 hours post-hatch. A total of 540 eggs from two Cobb500 breeder flocks, supplemented with either 0 or 0.025% CLA, were incubated, and […]

ABSTRACT This study aimed to assess the ruminal fermentation of various cottonseed (Exp. 1) and peanut (Exp. 2) meals, each processed using different techniques and exhibiting varying levels of rumen undegradable protein (RUP). Six treatments were evaluated for each feed. For Exp. 1 (cottonseed meal): negative control (conventional meal; Ncontrol), microwave-heated (2 min) with 2% xylose, conventional oven-heated (90 min) with 2% xylose, autoclave-heated (8 min) with 2% xylose, tannin treatment (6% inclusion), and a commercial soybean-based product (Pcontrol). For […]

ABSTRACT In this study, we investigated the effects of using poultry offal meal (POM) produced in rendering plants by adding dissolved air flotation sludge (DAFS) at set ratios into broiler grower and finisher feeds. The experiment conducted within the scope of the study lasted six weeks and involved 12,000 broiler chicks from Ross 308 strain middle-aged (36 weeks) breeders. Twelve different treatments were used in grower feed with 2 or 3% POM and finisher and pre-slaughter feeds with 4 or […]

ABSTRACT This study aimed to evaluate the effects of thermal processing and different carbohydrate sources on performance, development of digestive organs, and pancreatic enzyme activity in broiler chicks during the pre-starter phase. The experiment was conducted in a completely randomized design with a 2 × 2 factorial arrangement (pelleting or extrusion processing, and corn or sorghum) and included six replicates of 15 chicks each. The experimental diets were provided only during the pre-starter period (1–7 d). From 8 to 21 […]

ABSTRACT The effect of a dose of GnRH administration at sponge insertion on pregnancy rate and litter size in ewes was investigated. A total of 162 pluriparous, non-lactating Huyang ewes (3–4 years old, 40–50 kg body weight, 120–150 days postpartum) were randomly and equally assigned to three groups (n = 54 each): control, G25, and G50. Estrus was synchronized using an intravaginal sponge impregnated with flurogestone acetate for 12 days, followed by an injection of 330 IU of equine chorionic […]

ABSTRACT The INTERGEN package has been under constant development for the last two decades using the Fortran 90/95 programming language. The latest version of INTERGEN includes three different binaries: intergen, intergeniod, and intergenacc. Intergen has been consistently expanded to include the Best Linear Unbiased Prediction (BLUP) genomic module in recent years. The intergeniod and intergenacc binaries are new and aim to estimate genetic merit using iteration on data (IOD) and approximate accuracy. The present study aimed to provide a high-level […]

ABSTRACT The objective of this study was to evaluate the hepatic metabolism and performance of broilers fed reduced-energy diets (50 kcal/kg less), with or without guanidinoacetic acid (GAA). A total of 432-day-old male chicks of the Cobb 500 lineage were distributed in a completely randomized design with three treatments and eight replications. The treatments consisted of a basal diet (BD), basal diet with a reduction of 50 kcal/kg (RBD) and a basal diet with a reduction of 50 kcal/kg supplemented […]

ABSTRACT This study aimed to evaluate the effects of backgrounding supplementation, by increasing the levels of energy-protein supplements during the growing phase on the performance and rumen morphometrics of Nellore bulls intensively finished on pasture. Ninety-six Nellore bulls were blocked according to initial body weight (BW) of 385.6 ± 7.3 kg and randomly assigned to one of 24 paddocks of Urochloa brizantha cv. ‘Piata’ (four animals/paddock). The animals were supplemented during the growing phase as follows: (1) energy-protein supplementation at […]