ABSTRACT This study aimed to evaluate the effects of dried or rehydrated corn and sorghum grains on nutrient intake, performance, and economic analysis in high-grain diets (30:70) of Nellore bulls finished in a feedlot system. The experiment was completely randomized and replicated four times (two animals/pen), in which 32 Nellore bulls with an initial body weight (IBW) of 324.8±4.42 kg were fed in 16 pens according to the following treatments: rehydrated corn silage (RCS), rehydrated sorghum silage, dry corn grain, […]

ABSTRACT The objective of this study was to evaluate performance traits, intake, nutrient apparent digestibility, and economic analysis of lambs fed diets containing different levels of sunflower cake (SFC) with a certain chemical composition. Thirty-six Santa Inês × Dorper lambs (n = 9 per treatment diet) with an average body weight (BW) of 19.5±2.19 kg at the beginning of the study were randomly allocated to four isocaloric and isonitrogenous diets for 63 days. A control diet without SFC was compared […]

ABSTRACT The objective with this study was to calculate the total cost of maize production and beef cattle in permanent pasture activities in separate production systems (conventional) and integrated systems (maize production plus beef cattle), as well as to verify economic gains explained by the economy of scope. The first step for the development of the research was to obtain field experimental data. Six experimental treatments were studied: corn grain production, beef cattle in permanent pasture, and four integrated systems […]

The effect of different methionine + cystine (Met+Cis):total lysine (Lis) ratios on performance and egg quality for semi-heavily laying hens was evaluated. One hundred and twenty Lohmann Brown hens with 44 weeks old were allotted to a completely randomized design with with five replicates and four treatments, as follows: T1= 0.76 Met+Cys:total Lys ratio or 0.70% of Met+Cys and 0.92% of total Lys; T2 = 0.83 Met+Cys: total Lis ratio or 0.71% of Met+Cys and 0.85% of total Lys; T3 […]

A performance trial was carried out to evaluate the nutritional and economical analyses of feeding increasing dietary levels of pearl millet for growing and finishing pigs. Forty crossbreed pigs averaging initial body weight of 25.1 ± 2.1 kg were assigned to four treatments as a randomized blocks design with five replicates and two pigs (one barrow and one gilt) per experimental unit. The treatments contained the followign levels of pearl millet: 0, 25, 50 and 75%. No effects on daily […]

The present study evaluated the effects of alternating food restriction and refeeding cycles on the growth of pacu, during the growout phase and the viability of this practice in the commercial production of the species. Juvenile fish were distributed in 3 tanks and submitted to different feeding strategies: group A (fed ad libitum daily), B (food restricted to 4 weeks and refed for 9 weeks) and C (food restricted to 6 weeks and refed for 7 weeks) totalizing 13 weeks […]

The objective of this work was to evaluate, at 42 days of age, the productivity and economic performance, and the carcass and special cuts yield, in broiler chickens allotted to different quantitative feeding restriction programs applied in early age. A completely randomized design was used, in a 5 x 2 (feeding restriction program versus sex) factorial arrangement and five replicates with 20 birds per experimental unit. Feed intake and weight gain were reduced by the feed restriction programs, but feed: […]