The objective of this result was to evaluate the yields of non-carcass components of lambs finished in feedlot feeding on diets with corn silage or sugarcane under two levels of concentrate. Thirty-two non-castrated Ile de France lambs fed on corn silage or sugar cane with two roughage:concentrate ratios: 60:40 or 40:60. Lambs were confined until they reached 32 kg of body weight (BW), when they were slaughtered. After the bleeding, all non-carcass components (blood, skin, head, feet, rumen, reticulum, omasum, […]

This experiment aimed to determine the influence of diets with inclusion of protected fat and vitamin E on performance, yield and carcass characteristics of feedlot lambs with different weights. Thirty-two non-castrated Santa Ines lambs were fed diets with a ratio of 40% forage and 60% concentrate ad libitum, with presence or absence of protected fat and/or vitamin E, in a total of four diets. Two weights of early containment were also considered: between 20 and 25 kg and between 30 […]

The objective of this study was to evaluate the daily intake and total apparent digestibility of dry matter, organic matter, crude protein, gross energy, ether extract, neutral detergent fiber, acid detergent fiber, total and non-fibrous carbohydrates, total digestible nutrients, energy intake and nitrogen balance of silages of six maize varieties with early or super early cycles recommended to Northeast Brazil. Twenty-four male castrated lambs were lodged in metabolic cages. A completely randomized design with six treatments and four replications was […]

The ingestive behavior and performance of female lambs grazing on Marandu pasture submitted to different stocking rates during the rainy and transition season were evaluated. The experimental area with 4,500 m2 was divided into 45 paddocks of 100 m2. Twenty-seven Santa Ines female lambs (purebred) with 4 months age and 22 kg of initial body weight were distributed in a completely randomized design, with nine replicates. Lambs were divided into 9 groups with the same initial weight and submitted to […]

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% […]

The objective of this study was to evaluate the quantitative carcass traits of lambs from different genotypes receiving different levels of energy in the diet. Fifty-four non-castrated lambs – 18 Santa Inês (SI), 18 F1Dorper × Santa Inês (Dp × SI) and 18 F1Santa Inês × No defined breed (SI × NDB) – of average 150 days old and 22.6-kg BW were used in the beginning of the experiment. Diets contained 17% crude protein and 2.40 Mcal/kg DM or 2.90 […]

The aim of this study was to evaluate the production costs and economic return of soybean husks (CS) associated with two non-protein nitrogen (NNP) sources, in feedlot finishing lamb. Eighty (80) Suffolk cross lambs, averaging initial age of 79 ± 6 days and initial live weight of 23.11 ± 1.78 kg were used. The animals were grouped in four experimental lots accordingly to NNP source: conventional urea group (CUG, n = 20), which received 1% of common urea; protected urea […]

The objective of this work was to evaluate the effect of sex and of three finishing systems on sensory traits of Texel × Corriedale lamb meat an on the consumer acceptance of the meat. It was used 90 animals, 45 non-castrated male lambs and 45 females kept on pasture until weaning (70 days of age) and finished in three production systems: pasture, pasture with mother, and pasture with supplementation (soybean hull corresponding to 1% of life weight of the lambs). […]

The objective of this work was to evaluate performance, carcass traits and meat quality of Santa Inês lambs, finished in feedlot, fed diets containing 60% concentrate and enriched with soybean grain or with protected fat. The concentrates were composed with soybean meal, corn, wheat meal, urea, mineral mixture, soybean grain or protected fat. Tifton-85 hay was used as roughage. It was used 24 lambs with approximately 19.30 ± 1.77 kg and at average age of five months. The animals were […]

In this work we aimed to evaluate the effect of sex and finishing systems on individual characteristics of carcass, instrumental and chemical meat measurements of Texel × Corriedalle lambs. Ninety animals were used; 45 non-castrated rams and 45 females. Lambs were kept on pasture with mother to weaning (70 days) and assigned to one of three production systems: pasture, pasture with mother, and on pasture receiving a soy peel supplement at 1% of live weight basis. After slaughtering, carcasses were […]