The effect of the addition of 0.0, 0.5, 1.0 and 1.5% of urea to dehydrated vineyards residue, associated to forage cactus palm in the feeding of goats on intake and nutrient digestibility was evaluated. Twenty-four castrated crossbred goats, without defined breed, with average 18 kg of BW were distributed to a randomized block design according to the body weight. The addition of increasing levels of urea to dehydrated vineyards residue increased intakes of dry matter (DM), organic matter (OM), crude […]

The objective of the present study was to evaluate the partial and total digestibility coefficient (DC) of the nutrients, ruminal pH, ammonia nitrogen (N-NH3) concentration in the ruminal fluid and microbial efficiency synthesis in bovines fed rations containing 0, 8, 16 and 24% of brewers grains. The brewer grains were ensiled in surface silo (5,000 kg). Four Holstein cattle (480 ± 100 kg of body weight) fitted with ruminal and duodenal cannulas, were distributed to 4 × 4 Latin square […]

The dynamics of phosphorus in the body of Santa Ines lambs fed diets with different levels of this mineral was evaluated, considering the correlations among the levels of phosphorus consumed, in plasma; in saliva, in rumen contents, in feces, and in urine. Eighteen lambs were used with five mo old and 27 kg BW. The experiment was divided into two periods of five weeks, each with nine animals. The animals were individually kept in cages of metabolism study and were […]

The objective of this study was to evaluate the effects of feeding sugarcane bagasse, obtained by extraction of sugar using diffusion (BINdif) or conventional milling (BINmoa) method, as a fiber source associated with bagasse treated under pressure and steam (BTPV) on nutrient digestibility and ruminal characteristics in beef cattle. Four Nellore young bulls (380 kg BW), fitted with ruminal cannula, were assigned to a 4 × 4 Latin Square design. Combination of bagasse in a 50:50 (concentrate:roughage) experimental rations were: […]

The effects of multiple supplements with different urea levels on the productive performance and nutritional characteristics, for finishing beef cattle kept in deferred pasture of palisade grass (Brachiaria brizantha cv. Marandu) in the transition period of rainy to dry season were evaluated. The estimated dry matter availability of the pasture ranged from 16,360 to 9,358 kg/ha. In the performance trial, 20 crossbreed bulls, 20 months old and initial 376 kg BW were used. The animals were grouped in lots of […]

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 […]

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 […]

The objective this study was to evaluate the correlation between traits obtained real time ultrasound and those obtained in the carcass of feedlot finished lambs. Forty eight no castrated, woolless crossbred Santa Inês lambs with initial 20.0 kg LW and 103 days old. The measures obtained by ultrasound in real time were determined using by Aloka 500SSD ultrasound machine, equipped with 3.5-MHz linear transducer. Before the slaughter, using the real time ultrasound, were measured between at 12th – 13th ribs […]

The objective of this study was to evaluate the performance and the gross margin of profit of lambs finished in feedlot. Thirty-two no castrate male lambs from the genotype Santa Inês and crossbred Dorper × Santa Inês and two body condition, intermediate and fat, were used. The lambs were 16 Santa Inês (SI) and 16 ½ Dorper × ½ Santa Inês (DpSI), with average 103 days old and 20.0 kg BW. The lambs were full fed ration with 30% of […]

This research was to evaluate the effect of Leucaena (Leucaena leucocephala) and yeast (Saccharomyces cerevisiae) in diets for bovines on ruminal metabolism, including pH, volatile fatty acids, and ammonia and methane production. Four crossbred male cattle (800 kg LW) rumen cannulated were distributed to a 4 × 4 Latin Square design, in 2 × 2 factorial arrangement, composed by two levels of Leucaena (20% and 50% DM) and coast-cross grass hay, with or without yeast. No differences were observed in […]