This study was conducted using 103 male and female lambs from the following genetic groups: Santa Inês (SS) purebred and Santa Inês × Texel (TS), Santa Inês × Ile de France (FS), and Santa Inês × Bergamacia (BS) crossbred. The animals were slaughtered at the following body weights: 15, 25, 35 or 45 kg. After slaughter and cooling of the carcasses, the following cuts were made: neck, rib/flank, short ribs, loin, blade, and hind limb. The composition in muscle, bone […]

The objective of this study was to evaluate the ryegrass pasture production, forage quality and animal productivity in three sheep production systems: lambs weaned at 40 days of age and finished in ryegrass (Lolium multiflorum Lam.) until slaughter; lambs kept with their dams in the same pasture until slaughter; same treatment, but the lambs were supplemented in 1% of live weight with concentrate in creep feeding. The grazing method was continuous variable stocking, in order to maintain 1,000 kg of […]

Ten Corriedale sheep were evaluated, five males and five females with 52.2 to 87.6 kg of body weight, to evaluate the effect of air velocity (0 and 5 m/s) and temperature (25, 30 and 40ºC) on rectal temperature (TR, ºC), skin temperature (TE, ºC), fleece surface temperature (TV, ºC), temperature inside the fleece (TI, ºC), and fleece thickness (EV, cm) and their relationship with fleece thermal insulation. The results showed that air velocity did not affect the studied traits, suggesting […]

This study was to evaluate the use of fodder salt (salt and dicotyledon hay mix) on daily intake of fodder salt (IFS) and pangola (Digitaria decumbens) hay, and intakes of dry matter (DM), crude protein (CP), neutral detergent fiber (NDF), hemicellulose (HCEL), lignin and water (AGU), in addition to daily weight gain (ADG) and feed conversion tatio of lambs in confinement. Fodder salts were compound by dicotyledon hay meal (90%), mineral salt (5%) and ground maize (5%). Thirty non-castrated male […]

Carcass traits of culling ewes from Texel and Polwarth breeds submitted to two feeding systems were evaluated. Twenty ewes (10 from Polwarth breed and 10 from Texel breed) were randomly distributed according to its genetic group, in two feeding systems (feedlot and cultivated pasture). The slaughter was carried out when the animals reached body condition score of 3.5 points. Hot carcass (HCW) and cold carcass (CCW) weights and hot carcass (HCD) and cold carcass (CCD) dressing of Texel ewes were […]

With the objective to evaluate the performance, voluntary intake and nutrient digestibilities, 24 NDB (no defined breed), non castrated male lambs with 20 ± 3.25 BW initial and 4.6 ± 0.8 months old were used. Animals were kept in feedlot and fed diets with babassu meal (0, 10, 20 and 30%) in substitution to Panicum maximum Jack hay. The diets, isoprotein and isonitrogenous, were fed in a complete mix ration. A completely blocks randomized design, with four treatments and six […]

Performance and quantitative and qualitative carcass traits of lambs fed with diets containing sunflower seed were evaluated. Sixteen lambs were randomly distributed to a completely randomized design with four diets (0.00, 6.60, 13.20 or 19.80% of sunflower seed, % as fed), with 4 replications. The diets contained 2.65, 2.78, 2.89 and 2.93 Mcal / kg of metabolize energy and 18.38, 18.75, 19.98 and 21.18% crude protein, respectively, and was ad libitum fed. The lambs were weighed every 14 days and […]

The experiment carried out in aiming to evaluate the tissue and chemical composition of longissimus dorsi muscle of Suffolk lambs fed on creep feeding system with ration containing 0.0, 6.60, 13.20 and 19.80% of sunflower seed. At kidding, the lambs were identified, weighed and randomly distributed to paddocks composing four replicates per ration, totaling 16 lambs. The rations contained 2.65, 2.78, 2.89 or 2.93 Mcal/kg of ME and 18.38, 18.75, 19.98 and 21.18% of CP and were ad libitum fed […]

The objective of this trial was to determine the effects of feeding diets containing citrus pulp on carcass characteristics and meat quality of feedlot lambs. Thirty-two Santa Ines lambs were distributed in a complete randomized block design according to body weight and age at the beginning of the performance trial. Lambs were fed diets containing 90% concentrate (corn and/or citrus pulp, soybean meal and minerals) and 10% coastcross hay (Cynodon spp). Citrus pulp was added at levels 23.7, 46.1 and […]

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 […]