The experiment was carried out to evaluate addition effects of five urea levels with four ammonization periods on Agave sisalana residue chemical composition in the different storage times. It was used 300 kg of this co-product, equally distributed in 60 black polyethylene bags, which urea was added in the following concentrations: 0, 2, 4, 6 and, 8% over 0, 2, 4 and, 6 weeks storage periods. It was made determinations of dry matter (DM), crude protein (PB), neutral detergent fiber […]

This research evaluated the canopy structure of tanzania grass under intermittent stocking with four concentrate supplementation levels (SL) (0.0; 0.6; 1.2 and, 1.8% of live weight), in a split plot design, with SL being plots and grazing cycles (GC) subplots, with four replicates. Total herbage dry mass (MSFT), death herbage dry mass (MSFM), green herbage dry mass (MSFV), green leaf blade dry mass (MSLV), green stem dry mass (MSCV), canopy height (ALT); number of live leaf per tiller (F/P), leaf/stem […]

This work aimed to evaluate dry matter production, leaf/stem ratio and growth indexes of palisade grass cv. Xaraés grown under increasing nitrogen and potassium rates. The experiment was carried out in a greenhouse from November, 2004 until February, 2005. The experimental treatments consisted of a 4 ´ 3 factorial arrangement between nitrogen and potassium rates respectively. Nitrogen rates were 0, 75, 150, and 225 mg dm-3, whereas potassium rates were 0; 50 and 100 mg dm-3. The experiment design was […]

The objectives of this work were to evaluate the self-pollination as a tool in the elephantgrass (Pennisetum purpureum) breeding and to compare progenies of Pennisetum purpureum origined from different breeding strategies: self-pollination, intraspecific crossbreeds, and interspecific crossbreeds with Pennisetum glaucum. The experimental treatments were represented by the three fecundation forms: intraspecific crossbreed, interspecific crossbreed and self-pollination. A total of ten families originated from intraspecific crossbreed resulting in 160 progenies; two families originated from interspecific crossbreed resulting in 38 progenies, and […]

The objective of the present work was the detection of different nutritional statuses in Brachiaria decumbens pasture using remote sensing techniques. The area was treated with five rates of nitrogen fertilizer (0, 50, 100, 150 and, 200 kg ha-1) with six repetitions and evaluated in a completely randomized statistical design. A remote sensing system composed of digital cameras, cables, a framegrabber and a computer was used with a three meter metallic support to position the cameras. The system acquired images […]

The objectives of this study were to obtain heritability estimates for number (NBZ10 and NBZT) and kilograms (QBD10 and QBDT) of calves weaned up to ten years of age and during herd life, kilograms of calves weaned per year in herd (QTPR) and their genetic correlations with culling age, ages at first, at second and at third calving, adjusted and unadjusted weights for condition score, body size indexes and condition score at first mating, at first calving and at mature […]

A meta-analysis was carried out to study the relationship among plasma Zn and Cu with diet nutrients and piglets weight gain. Eighteen publications were considered in the database. The intake of CP, lysine, Ca, P, Cu and Zn was considered as variable in the analysis. Regression analyses were used through mixed models. Plasma Zn was affected by P and Zn intake as well as Cu plasma. P intake and plasma Cu affected negatively plasmatic Zn. The regression analysis showed that […]

Two experiments were carried out to determine the nutritional values of sticky (SC) and dry coffee hulls (DC) and their effects on the performance and carcass quality of growing and finishing pigs. The hulls were ground in 2.5 mm (for SC2 and DC2) and 4.0 mm (SC4 and DC4). In Exp 1, two digestibility assays were carried out with 15 barrow pigs weighting 45.7 ± 4.12 kg and 77.5 ± 6.28 kg for growing and finishing phases, respectively. The digestible […]

Two hundred male Ross broiler chicks were raised from 10 to 40 days of age and fed a corn-soy diet with 4% of fresh or oxidized poultry offal fat to evaluate the effects of dietary fat quality on broiler performance and on oxidative stability of frozen thigh meat during storage. Fresh poultry fat, characterized by low concentration of oxidation products determined by specific absorbances of 5.80 and 0.69 at 232 and 270 nm, respectively, was supplied by a local renderer […]

The experiment aimed to test different ratios digestible lysine:crude protein (CP) in diets for broiler until 21 days. One thousand and eight hundred 1-d birds of Cobb strain were allotted to a completely randomized design with a hierarchical rank model with three levels of CP and four ratios digestible lysine:CP was used. In the performance trial, the diets were fed to 30 birds in each of the five replicates. At 21 days of age, feed intake, weight gain and feed […]