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 The current study aimed to identify the variables that best explain performance using Principal Component Analysis (PCA), in addition to detecting gastrointestinal proteins, amylase, and lipase in juvenile tambaqui (Colossoma macropomum) fed diets with lysine. The diets contained 6.60, 9.72, 12.84, 15.96, 19.08, and 22.20 g.kg−1 of total lysine and were supplied to the fish (n = 180; 10 fish per tank) for 90 days. The data that were inserted into the productive performance equations were collected during the […]

ABSTRACT This study aimed to assess the growth performance of bullfrog (Aquarana catesbeiana) tadpoles subjected to different management practices and diets. Two distinct feeding management strategies were evaluated: broadcast feeding and the use of a trough. Regarding the diet, two formulations were tested: the first involved feed with 28% crude protein (CP) for the initial 30 days, followed by feed with 36% CP for the subsequent 30 days; the second treatment consisted of a commercial feed designed for tropical carnivorous […]

ABSTRACT This study aimed to evaluate the productive and reproductive performance and the nutritional metabolic condition of ewes supplemented at different stages of gestation in a synchronized reproduction system. Fourty Santa Inês × Dorper crossbreed ewes, pregnant with an average age of ten months and two previous births, were distributed in a completely randomized design, with four treatments: mineral salt, supplementation started 20 days before the estrus synchronization (ES) protocol, supplementation from confirmation of pregnancy (60 days after ES), and […]

ABSTRACT This study aimed to investigate the effects of xylanase (Xyl) individually or in combination with B. subtilis and B. licheniformis associated or not with yeast cell wall in pig diets with a reduction of 100 kcal/kg of metabolizable energy (ME) content. Pig performance, bone parameters, intestinal morphometry, and bioeconomic indices were evaluated. A total of 75 pigs (25 females and 50 barrows; 25.02±3.21 kg) obtained from crossing Large White × Landrace were used. The experimental design consisted of randomized […]

ABSTRACT The objective of this study was to assess the accuracy of the content of total mixed rations (TMR) offered to high-producing cows from 20 dairy herds of Castro, Paraná State, Brazil. The average milk yield during the sample collection period was 38.0±6.8 kg/day, with 3.47±0.25% milk fat and 3.05±0.18% milk protein. The particle size distribution of samples of fresh diet and leftovers was evaluated using the Penn State Particle Separator (PSPS) and chemical analysis was also conducted. The TMR […]

ABSTRACT The study aimed to verify the effect of diet and environmental temperature on traits of milk fat globules (MFG) of goats. The experiment was conducted in climatic chambers, where we housed 12 Alpine goats with a mean age of 4.02±1.78 years, live weight of 41.8±4.59 kg, and average milk production of 2.16±0.59 kg. The animals were subjected to two different controlled temperatures, T1 = 26 ℃ (thermoneutral) and T2 = 34 ℃ (stress), and diets with different energy levels […]

ABSTRACT The objective of this study was to evaluate the accuracy of the following six body weight (BW) estimation methods in Campolina (CAM) horses: A – weight tape placed at three different positions on the animal’s thorax; B – Crevat and Quetelet’s formula; C – Hall’s formula; D – Hintz and Griffiths’s table; E – Santos’s table; and F – Cintra’s formula. A total of 380 CAM horses were separated according to sex, age class, and gestational stage and evaluated. […]

ABSTRACT This study aimed to evaluate the antioxidant potential of citric acid in plant protein based-diets offered to juvenile tambaqui, Colossoma macropomum. Four isonitrogenous and isoenergetic diets containing different levels of citric acid (0, 10, 20, and 30 g.kg−1) were formulated. Fish (n = 160; 27.56±1.03 g) were randomly distributed in 310-L water tanks (n = 16), with four replicates per treatment. After the experimental period (80 days), animals were anesthetized, and blood was collected for cell count. They were […]

ABSTRACT This study was developed using meta-analysis to evaluate the effect of β-mannanase on both poultry and pig performance. Two databases were constructed using information from previous studies that evaluated the β-mannanase supplementation in diets for broilers (30 papers; 19,643 birds) and pigs (20 papers; 5,319 animals). The meta-analysis followed three sequential analyses: graphical, correlation, and variance-covariance. The effect of β-mannanase supplementation on performance considerably varied in both databases. Data analysis considering the study effect showed that β-mannanase supplementation did […]