The objective of this study was to evaluate the influence of soybean and canola oil added in crescent levels on production performance indexes and internal and external egg quality of brown commercial layers of the strain Bovans Goldline during five periods of 28 days. Two hundred and eighty hens with 18 weeks old were distributed in a completely randomized design, with seven diets in a 2 × 3 + 1 factorial arrangement (oil type and oil level, and an additional […]

The objective of this study was to evaluate the monoammonium phosphate (MAP) as a source of phosphorus and Paraíso limestone (CP) with higher magnesium levels (1.92%) as a source of calcium for commercial layers. A total of 280 white Dekalb chickens were housed in individual cages during the period from 46 to 58 weeks old. A completely randomized experimental design, with four diets, seven replicates and ten birds per experimental unit were used. The diets were: FBC/CB – dicalcium phosphate […]

The effects of dietary energy, lysine and methionine + cystine levels on performance, carcass and cuts yields of male and female broiler chickens were evaluated. The experiment was analyzed as a completely randomized experimental design in a 3 × 2 factorial arrangement composed by six diets and eight replications (four males and four females). The diets consisted of energy (low, middle and high) and lysine and methionine + cystine (standard and + 10%) levels and of raising period (1 to […]

Foram conduzidos três ensaios para avaliar os níveis de energia metabolizável (EM) e a melhor relação energia:proteína (E:P) para aves de corte machos de crescimento lento criadas em semiconfinamento nas fases inicial (1 a 21), de crescimento (22 a 49) e de terminação (50 a 70 dias de idade). Em cada ensaio, 400 machos da linhagem ISA Label na fase de criação foram alojados em instalação experimental constituída de 20 piquetes com área coberta de 3,13 m²para alimentação e recolhimento […]

Two experiments were carried out to determine nutritive value and verify performance of piglets fed diets with by cassava root silage with or without whole soybean. In the first experiment, 15 crossbred barrows with initial BW of 21.90 ± 2.54 kg were allotted to a split plot design, whole plot (animals) and plot (time) with five diets and six repetitions. Four cassava root silages were evaluated: without inoculant (CA), with inoculant (CI), with integral soy (CS), and with integral soy […]

An experiment was carried out to evaluate the effect of different forms of water supply for laying hens on performance and egg and water quality. Two types of drinking system were evaluated: cup and nipple. In each treatment 10 replicates had been used, composed for five hens. The experiment lasted 63 days, divided in three periods of 21 days. Data of performance and egg quality were submitted to variance analysis and, when the differences were significant, they were compared by […]

The objective of this trial was to evaluate the effect of starch sources and processing used in diets on performance and nitrogen metabolism of lactating Holstein dairy cows fed sugar cane as forage. Five multiparous lactating Holstein cows, cannulated in the rumen and proximal duodenum, were used in a 5 × 5 Latin square. Cows were fed a 40:60 forage concentrate ration (40% fresh sugar cane and 60% concentrate) and differ only on processing or mainly starch source: cracked corn; […]

The effect of different thermal control systems on broiler body temperature was evaluated in 610 female broiler chickens, Cobb breed, housed in 10 small scale of aviaries models (treatments). Climate data were collected inside the models and were used to calculate the Thermal Heat Load (THL). Bird surface and rectal temperature were recorded to calculate average body temperature (ABT). Data were always collected from 1:00 and 2:00 pm, the hour of maximum THL inside models. The treatments consisted of a […]

Twenty-six Moxotó non-castrated male kids (initial mean 15 kg LW and 7-8 month old) fed a diet with 2.6 Mcal ME were used to evaluate the body composition and protein requirements for weight gain. At the beginning of the experiment, six animals were slaughtered as reference to estimate initial body composition and initial empty body weight (EBW). Subsequently, homogeneous groups of four animals were distributed a complete randomized experimental design into two feeding regimes: ad libitum feeding (AL) and feed […]

Twenty-six Moxotó non-castrated male kids (averaging 15 kg of initial live weight (LW) and 6-8 months old) fed a diet with 2.6 Mcal of metabolizable energy were used to predict the net energy requirements for maintenance and net efficiency of metabolizable energy utilization (EMEU) for maintenance (km) and weight gain (kf). At the beginning of the experiment, six animals were slaughtered as reference to estimate initial body composition and initial empty body weight (EBW). Afterwards, five groups of four animals […]