The objective of this experiment was to evaluate the effects of adding monoammonium phosphate (MAP) in high concentrate diets containing citrus pulp on feedlot lamb performance and carcass characteristics. Twenty four Santa Ines lambs (26.4 kg of initial body weight and 125 d old) were penned individually and used in a randomized complete block design according to body weight and age at beginning of the trial. Diets were formulated to provide a similar amount of crude protein and contained 70% […]

This experiment was carried out to evaluate the effect of supplementation of vitamins C or E in the diet on performance, carcass characteristics and hematological parameters of broilers kept under high environmental temperature. Four hundred and fifty broilers were distributed in a completely randomized design with five treatments and nine replications, with 10 and 7 birds per experimental unit, respectively, according to the periods from 1 to 21 and 22 to 42 days old. Treatments consisted of a basal diet […]

This research was conducted to evaluate the net energy and ractopamine levels in the diet of finishing gilts kept under thermal comfort conditions. Forty gilts were used, with initial weight of 67.4 ± 3.4 kg, distributed in a randomized blocks design in a 2 × 4 factorial scheme composed of two levels of ractopamine, 0 and 20 ppm, combined with net energy levels of 2,300; 2,424; 2,548 and 2,668 kcal/kg of feed, with five replications, considering each animal per experimental […]

The objective of this work was to evaluate the influence of using silk flower hay replacing corn and soybean meal on physical-chemical and sensorial traits of lamb meat. It was used 32 intact Morada Nova male lambs (12.7 ± 2 kg initial body weigth) on feedlot system, distributed in a completely randomized design with four levels (0, 15, 30 and 45% on dry matter basis). The use of silk flower hay in the diet influenced quality of meat and carcass, […]

It was evaluated intake, total apparent digestibility, performance and feeding behavior of bovine fed diets constituted of corn silage, crushed sugar cane given fresh or crushed and given 72 hours after storage, ensilaged sugar cane with or without 1% of calcium oxide and concentrate at the proportion of 1% of the body weight. It was used 35 bovines, distributed in a random block design, with 5 treatments and 6 repetitions. The animals were housed in collective stalls with troughs individualized […]

This work evaluated levels of digestible lysine on performance and carcass composition of barrows with high genetic potential for meat deposition. It was used 80 animals with initial body weight of 95.55 ± 1.04 kg, distributed in a completely randomized block design, with 5 diets (0.540; 0.642; 0.744; 0.846 and 0.948% of digestible lysine), eight replicates and two animals per experimental unit. The experimental diets and water were provided ad libitum throughout the experimental period. Digestible lysine levels did not […]

This study was carried out to evaluate the effects of increasing levels of digestible methionine+cystine on performance and carcass composition of high genetic potential barrows for lean deposition. Sixty-four barrows with initial weight of 95.46 ± 1.09 kg were allotted to a completely randomized block design, with four levels of digestible methionine+cystine (0.427, 0.466, 0.504, and 0.545%, corresponding to the digestible methionine+cystine:digestible lysine ratios of 57.0, 62.0, 67.0 and 73.0%, respectively), with eight replicates, and two animals per experimental unit. […]

The effects of available phosphorus levels on performance and carcass composition of barrows with high genetic potential for meat deposition were evaluated. Sixty swine with initial body weight of 59.84 ± 1.64 kg were assigned to a randomized block experimental design, with five diets (0.097; 0.190; 0.280; 0.370 and 0.460% aP), six replicates and two animals per experimental unit. Experimental diets and water were supplied ad libitum until the end of the experimental period, when animals reached 96.64 ± 3.68 […]

The objective of this work was to evaluate performance and carcass and dressing yields of four broiler chicken lineages raised in confined and semi-confined systems. It was used 1,440 chicks distributed in a random block design with a 4 õ 2 factorial scheme, composed of lineage types (Ross 308, Máster Griss, Label Rouge and Vermelhão Pesado) and two production systems (confinement and semi-confinement), each one with four replications with 45 birds. At 84 days of age, four birds of each […]

The purpose of this study was to evaluate the effect of ractopamine and chromium-methionine additions and their combinations in diets for growing and finishing swines on performance, carcass traits and meat quality. Sixty-four Topigs line swines at 26.56 ± 3.11 kg initial body weight were distributed in a randomized block experimental design in a 2 x 2 factorial scheme with two levels of ractopamine (0 and 5 ppm) and two levels of chromium-methionine (0 and 400 ppb), totaling four diets […]