The objectives of this trial were to evaluate the effect of dietary oil supplementation on milk yield, milk composition and milk fatty acids profile of lactating Saanen goats. Four ruminally cannulated multiparous goats averaging 54±1.02 kg BW and 80 days in milking were used. Goats were fed a control diet or a diet supplemented with one the following oil sources: canola, rice or soybean. The statistical design was a 4 x 4 Latin square and data were analyzed using the […]

The objectives of this trial were to evaluate the effect of dietary oil supplementation on intake, apparent total tract digestibility of nutrients, and ruminal metabolism in lactating Saanen goats. Four ruminally cannulated multiparous goats averaging 54±1.02 kg BW and 80 days in milk were used. Goats were fed a control diet (no oil supplementation) or diets supplemented with one of the following oil sources: canola, rice or soybean. A 4 x 4 Latin square design was used and data were […]

Eighteen lambs averaging initial body weight (BW) of 15 kg were allotted to six groups of three animals (one lamb per diet) and were fed diets with following forage:concentrate ratios (F:C): 1) 40F:60C; 2) 55F:45C; or 3) 70F:30C. Lambs of each group were slaughtered when the animal fed the diet with the highest concentrate level reached 25 kg of BW. Animals were slaughtered after 16 h of fasting (feed and water). After obtaining the slaughter body weight (SBW), animals were […]

The objective of this study was to estimate the dietary apparent digestible fraction of nonfiber carbohydrates (NFC) using the Lucas test concept. The dataset contained a total of 167 observations with 57 originated from two trials conducted with lactating cows and 110 from three experiments with growing and finishing cattle. The dataset was randomly divided in two subsets. The first subset was used to estimate the model parameters while the second for model validation. Tests for checking equality of models […]

The objective of this study was to develop and validate a model to estimate the EE apparently digestible fraction from different cattle diets. True digestibility coefficients and metabolic fecal contribution were the main parameters fitted to the model. The estimation method for both parameters was based on the Lucas test. The dataset used to build the model contained 48 and 60 experimental means for lactating cows and growing and finishing cattle, respectively. Data were taken from 24 experiments (12 experiments […]

The objective of this trial was to investigate ruminal, intestinal and total tract digestibility of acid detergent insoluble nitrogen (ADIN) in grazing cattle. Five Holstein x Zebu steers averaging 304 kg of body weight and 24 months of age and fitted with esophageal, ruminal and abomasal cannulas were used in this study. Animals were maintained in five 0.34-ha paddocks of Brachiaria decumbens with or without concentrate supplementation. The experiment was conducted from August to November of 2000 using four 21-days […]

The objective of this experiment was to evaluate the quality and nutritive value of marandugrass silages. It was evaluated the followings treatments: T1– forage without treatment (control); T2 – 10% of pelleted citric pulp (CiP); T3 – enzymatic bacterial additive (EBA) (SIL-ALL-C4 of Alltech) applied at 5 g/L of water/t of forage; T4 – Coarse chopped forage wilted for 4 hours under the sun. The grass was harvested with 60 days of regrowth (24% DM). The intake and digestibility evaluations […]

Twenty crossbred bulls (1/2 and 3/4 Bos taurus x Bos indicus) averaging 24 months of age and 532 kg of body weight at the beginning of the experiment were used. Animals were randomly assigned to five treatments (four replicates/treatment) in a completely randomized design to evaluate the effect of replacing corn grain with a wet byproduct of cassava starch extraction on apparent digestibility of nutrients. Bulls were fed diets containing sorghum silage and one of the following levels of cassava […]

This study aimed to evaluate the behavior and the welfare of hens comparing a conventional housing system (laying cages in battery) with another system using litter + nest. The effects of environmental conditions (stress or comfort) on behavior responses of laying hens were also analyzed by precision techniques. Two groups of 10 birds of Hy-line W36 and Hy-line Brown stains, at the beginning of the production phase, were submitted to two environmental conditions (26°C with 60% RU or 35°C with […]

The objective of this trial was to evaluate the effect of supplementing diets with similar protein, fiber and lipid contents with different lipid sources on dry matter intake, milk yield and feed efficiency of early lactating Jersey cows. Eight multiparous cows averaging 420 kg of body weight and daily yield of 20 kg of 3.5% fat corrected milk (FCM) were randomly assigned to two replicated 4 x 4 Latin squares. Each experimental period lasted four weeks and means were compared […]