This work used the necessary time (days) for a completely elongation of new leaves, i.e., 1.5-2.0; 2.5-3.0 and 3.5-4.0 new leaves completely elongated in order to determine the rest period (RP) between grazing in Pearl millet (Pennisetum glaucum (L.)R. Br.). The experiment was carried out as a completely randomized design with four replications (paddocks). Evaluations were performed for: number of live leaves/tiller (NAL); final length blade (FLB); blade/sheath and culm ratio (B/S+C); basal tiller density (BTD) and aerial tiller density […]

Aiming to evaluate the spray-dried plasma levels (BP) in diets for piglets weaned at 28 days of age, an experiment with 128 piglets with initial body weight of 7.635 ± 0.103 kg was conducted and allocated in a experimental block design composed of four treatments, eight replicates and four animals per replicate. The treatments used were: diets with dried milk (DM) and without spray-dried plasma (BP) from 29 to 42 days of age; diets with DM and 2.8% of BP […]

The experiment was carried out in a greenhouse from September 2001 to January 2002 to select several prickly-pear varieties resistant to cochineal carmine. Twenty pricky-pear varieties were evaluated as a completely randomized experimental design with four replicates. The plants were artificially infested. The infestation level was evaluated by a 0 – 5 scale. The most resistants clone are “Miúda” and “Orelha de Elefante”.

This experiment was carried out from July 2006 to June 2007. It was used an experimental design of random blocks with split plot in time, with two replications using the following treatments: Coastcross + peanut forage + 200 kg/ha of N; Coastcross + Peanut Forage + 100 kg/ha of N; Coastcross + 200 kg/ha of N and Coastcross + Peanut Forage in the following seasons: winter, spring, summer and autumn. To estimate the forage mass production availability, the double sampling […]

The objective of this study was to evaluate the effect of the addition of acidifiers to milk, milk replacer or post-weaning concentrate on the performance and health status of weaning and post-weaning calves. Three experiments were carried out, in the first experiment 62 Holstein × Zebu crossbred calves (males and females), reared from birth to 60 days of age, were distributed and fed milk with or without acidifier. From the third day, the calves were suckled (5L of milk/d) for […]

To estimate genetic parameters and to evaluate the genetic and phenotypic progress for the traits birth weight (PN), average daily gain from birth to weaning (GMDND), weaning weight adjusted to 205 days of age (P205) and the visual scores for conformation, precocity, musculature and size, at the pre weaning phase, there were used information from 23,176 Aberdeen Angus breed animals born between 1994 and 2004. The covariance components were obtained by REML, using an animal model. The direct and maternal […]

The biomass flow of Panicum maximum cv. Tanzania under intermittent stocking with four concentrate supplementation levels, with three grazing periods and 21 rest periods was evaluated. A split plot design, with supplementation level (0.0, 0.6, 1.2 and 1.8% of live weight) and grazing cycles as sub-parcels, with three replicates (paddocks) by treatment was used. There was no effect between supplementation levels and grazing cycles on the leaves 1 and 2 TAlF ratio, averaging 0.69. There was a square effect of […]

An experiment was conducted to evaluate the influence of two vitamin D sources and three vitamin C levels on performance, internal and external egg quality, and bone strength characteristics. In addition, the total and ionic blood calcium concentrations, bone ash and calcium were determined. Two hundred and eighty eight 23-week-old ISA Babcock B-300® laying hens were used during the 12-week study in a 2 × 3 factorial arrangement: vitamin D sources (cholecalciferol and 25-hydroxycholecalciferol – 25(OH)D3) and vitamin C levels […]

This study aimed to evaluate the effect of intraruminal infusion of propionic acid (RPA) associated to two (80:20 and 60:40) forage:concentrate ratios (FCR), for young bulls. Four Holstein × Zebu crossbred young bulls with average age of 7 months and 160 kg of body weight (BW) were distributed to a 4 × 4 Latin square design. A total mixed ration, isonitrogenous diets, was ad libitum fed to animals. The propionic acid was obtained by fermentation of reconstituted milk whey by […]

The objective of this experiment was to determine the true digestibility (TD) of amino acids from corn samples submitted to different drying temperatures (room temperature and artificial drying at 80, 100 and 120°C), and different storage periods (0, 60, 120 and 180 days). The TD of amino acids was determined by the forced feeding method using cecectomized adult Leghorn roosters, placed in individual cages. A 4 × 4 factorial arrangement was used (four drying temperatures and four storage periods), in […]