This study aimed to estimate the genetic parameters and genetic and phenotypic trends for weight at weaning (PD), yearling weight (PS), average daily gain from birth to weaning (GMDND), average daily gain from weaning to yearling (GMDDS), days to reach 160 kg at the pre weaning phase (D160) and days to reach 240 kg at post weaning phase (D240) of Brangus cattle raised in 37 farms in South, Southern and Mid Western Regions of Brazil, from 1987 to 2001. Records […]

This study aimed to analyze genetic diversity in a conservation nucleus of Santa Inês sheep using thirteen microsatellite loci on chromosome 20 (where the Sheep Major Histocompatibility Complex – Ovar-MHC – is found). Seventy three animals from one herd born from 2004 to 2006 were evaluated as a principal nucleus. Seventy one animals from two other herds were used as control comparison. There was a reduction in heterozygosity over the years in relation to the whole population. This may be […]

The source of phosphorus of better quality for use in the pig feeding and that cause less environment impact by the excretion of phosphorus in the enviroment was evaluated. Twenty-one male pigs weighting 34.94 ± 2.88 were fed corn-soybean meal based diets supplemented with different P sources: control without P supplementation P (Cont), dicalcium (FBC), monodicalcium (MBC), triple superphosphate (ST), simple superphosphate (SS), Catalão rock (Rocha) and phosphoric acid (AcF). The experiment was designed to evaluate the P availability and […]

This study was carried out to evaluate the effects of increasing metabolizable energy and soybean oil levels on the egg chemical composition, total lipids and cholesterol contents and fatty acids profile in the egg yolk. Three hundred and sixty 29 week-old Bovans Goldline semi-heavy commercial layers were used during three periods of 28 days. A completely randomized design were used in a 3 × 3 double factorial arrangement with three soybean oil levels (1, 2 and 3%) and three metabolizable […]

The performance of broilers reared at different temperatures and fed diet with or without yeast extract and/or prebiotic in the starter phase was evaluated. One thousand, four hundred and forty 1-d male Cobb-500® were reared at different climatic chambers. The diets with or without yeast extract or prebiotic were fed only in the starter phase (1 to 7 days), and from the 8th day on all broiler were fed the same commercial diet. It was used a complete randomized experimental […]

The objective of this study was to evaluate the effects of the genotypes and body condition on the carcass dressing of lambs finished in feedlot. Twenty-four Santa Inês and 24 ½ Dorper × ½ Santa Inês crossbred lambs averaging 19.8 kg of weight and 103 days old were used in the trial. The adaptation period to the facilities and diet was of 14 days. The animals received complete ration with 30% of maniçoba hay (Manihot pseudoglaziovii) and 70% of concentrate. […]

The objective in this work was to evaluate the chemical characteristics and the fatty acids composition of beef loin (Longissimus muscle) of young bulls, steers and heifers of Canchim breed. The animals were finished in feedlot system and fed two experimental diets, one with corn silage and concentrate (SIL) and the other with sugar cane, as exclusive roughage, and concentrate containing sunflower grains (CNA). Differences were not detected in relation to moisture, protein and mineral contents between diets or sexual […]

The effect of alfalfa hay processing (Medicago sativa L.) and the addition of soybean oil in diets on the total dry matter digestibility, organic matter, crude protein, ether extract, neutral detergent fiber and acid detergent in horses was evaluated. Four crossbred male foals with approximately 14 months of age and 197.25 kg were used and assigned in a (4 × 4) Latin square design with a factorial arrangement (2 × 2) composed of two alfalfa haying forms (cubes or branches) […]

The in vivo carcass characteristics and the cut yields measured in the carcass of Morada Nova sheep finished in feedlot system fed increasing levels of dietary concentrate were evaluated. Thirty-two castrated Morada Nova lambs with 8.11 ± 1.15 months of age and 19.67 ± 2.97 kg of initial body weight were used in this trial. The experimet was analyzed as a completely randomized block design with eight replicates per treatment. Animals were slaughtered at 30.0 kg BW and fed diets […]

The objective of this work was to evaluate the feed systems for 70 primiparous beef heifers from the initial gestation period at the age of 13/15 months to the end of the second reproductive period as primiparous cows at 22/24 months of age. The experimental design was fully random with plots subdivided in time considering animals as replicates. The initial mean live weigh was 282 kg and the initial mean body condition was 3.2. The feeding systems were proposed to […]