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 work was to evaluate intake, nutrient apparent digestibility and ingestive behavior of sheep fed rations with cashew nut meal (CNM) at the levels of 0; 10; 20 and 30% in the concentrate ration. It was used a double 4 × 4 Latin square experimental design. Intakes of dry matter (DM), organic matter, crude protein, mineral matter, non-fibrous carbohydrates and total digestible nutrients were not influenced by the addition of CNM, however, intake of neutral detergent fiber […]

Scientific advances in nutrition of dairy cows in the first decade of the XXI century have occurred. This paper will review the most common additives fed to transition cows to decrease the incidence of metabolic disorders, which will be discussed separately with emphasis on their mechanisms of action, utilization and efficiency. Some changes on protein in the 2001 updated version of the Nutrient Requirements of Dairy Cattle to reach better precision of the nitrogen and amino acid requirements of lactating […]

The aim of this work was to evaluate the effect of dietary chromium supplementation on performance, carcass yield, meat quality, cholesterol level on the breast and blood biochemical parameters on broilers. It was used a complete randomized experimental design with five levels of chromium tripicolinate (0, 150, 300, 450 and 600 µg/kg of chromium) and six replicates with 50 broilers per experimental unit. The use of chromium tripicolinate had no effect on the performance of broilers. The levels of chromium […]

The objective of this study was to evaluate intake, digestive kinetics and nutrient digestibility in horses fed diets supplemented with soybean oil inclusion. Fifteen horses were used in a randomized complete design with three diets and five replications. The experimental diets were formulated from a control diet (without soybean oil) with the addition of 8.5% and 19.5% soybean oil. The experiment lasted for 34 days, 30 days for the horses to adapt to the diets and four days for feces […]

The objective of this study was to evaluate the fatty acid profile and PGE2 concentration in tibia of broiler chickens fed on diets with different linseed oil (LO) levels from one to 42 days of age. At the initial and growing phases (1 to 21 days and 22 to 42 days of age, respectively) a completely randomized design was used with four treatments, six replications and 50 birds per experimental unit. The birds were fed diets with different linseed oil […]

This work was carried out to evaluate the effect of dietary conjugated linoleic acid (CLA) inclusion (1.2%) on pacu performance and fillet fatty acids deposition and profile. A hundred and twelve growing pacus (256.19 ± 24.09 g of initial weight) were allotted to a completely randomized design with two treatments and four replicates, in eight tanks (1 m3 each) and hand fed to apparent satiation, three times a day, for 60 days. Extruded diet with 28% CP and 3,000 kcal […]

The quantitative characteristics of the carcass, yield of cuts, tissue proportion, chemical composition and fatty acid profile of the Longissimus dorsi muscle of ¾ Boer + ¼ Saanen goats fed rations with linseed, sunflower and canola seeds were evaluated. Twenty-four not castrated male goats initially averaging 22.7 kg and 90 days were allotted to a completely randomized design and slaughtered at 30.9 kg of body weight and 61 days of feedlot. The rations were composed of oats hay, soybean meal, […]

The effects of cottonseed and sunflower oil supplementation on milk composition were tested using crossbred Moxotó goats. Experimental diets were as follows: control, without addition of oil; addition of 3% cottonseed oil; 5% cottonseed oil; 3% sunflower oil and 5% sunflower oil (%DM). Ten confined lactating goats were allotted to a double Latin square experimental design (5 × 5). Each period was comprised by 12 days of adaptation to the diet and three days of sampling in each period. Cottonseed […]

Milk fat from 12 7/8 crossbred Holstein-Zebu lactating dairy cows was used to evaluate the effect of different diets on milk fatty acid (FA) profile and milk CLA content. Cows were fed concentrate containing corn (CR), wheat bran (WB), or dried citrus pulp (CP) supplemented or not with soybean oil. Chromatographic analysis showed a FA recovery greater than 95%. With the exception of milk content of trans-10 C18:1 and proportions of trans-10 C18:1 and trans-11 C18:1 on total milk trans– […]