Twelve purebred and crossbred Holstein cows were allotted to three 4 x 4 Latin Squares to evaluate the intake, apparent digestibility of nutrients, milk production and composition, ruminal pH and ammonia. The experimental diets were based on corn silage (CS) (AG 1051) with forage:concentrate ratio (F:C) of 60:40, in dry matter (DM) basis, or based on sugar cane (SC) (RB 855536) with F:C of 60:40 with .35 or 1% of urea+ammonium sulfate (AS) mixture or F:C of 50:50 with 1% […]

The experiment was developed to evaluate the effect of the replacement of corn grain by dehydrated citrus pulp pellets on the performance and carcass characteristics of Santa Gertrudis young bulls fed high concentrate diets. Twenty-eight bulls, with average age of nine months and an initial weight of 277 kg, were kept in individual pens and fed during 92 days, after 21 days of adaptation. The animals were fed a diet with 20% of the dry matter as corn silage, with […]

This experiment had as objective to evaluate protein fermentation of three nitrogen sources (trypticase, soybean meal and fish meal), with or without monensin or propolis extract addition. Incubations were done by using 7.2 mL of McDougall buffer, 2.0 mL of inocula, 0.2 mL of ethanolic solution with or without monensin or propolis and 84.4, 150 or 112.5 mg/10 mL of trypticase, soybean meal and fish meal, respectively, in a 3×3 factorial arranjement. The flasks were incubated anaerobically at 39ºC in […]

The objective of this work was to evaluate the performance and carcass characteristics of cattle fed high concentrate diets containing 15, 21 or 27% of sugarcane bagasse in the dry matter. Twenty-four Nellore steers with 279 kg of shrunk body weight and 24 months of age, two per pen, were fed for 98 days. No significant effects were observed for average daily gain (mean =1.461 kg) and feed efficiency among the treatments. It was observed a linear effect between dry […]

The objective of this work was to determine the fractions and rates of degradation of the carbohydrates for sugar cane, with different cycles of production (early and intermediate), in three cut times (426, 487 and 549 days). The total carbohydrates (TC), non-fibrous carbohydrates (NFC), fractions potentially digestible (B2) and indigestible (C) of the neutral detergent fiber (NDF), corrected for ashes and protein (NDFcp), were obtained. The kinetic parameters of NFC and fraction B2 were obtained from the technique of in […]

Selenium and vitamin E are important antioxidants for cells and tissues protection acting directly as a support for the udder health. This experiment was designed to evaluate the influence of prepartum selenium and vitamin E supplementation on milk somatic cell counts of Holstein cows. Eighty four animals were allocated into four treatments: control; supplementation with 5 mg Se/day; supplementation with 1000 UI vitamin E/day and supplementation with 5 mg Se/day + 1000 UI vitamin E/day. The supplementation started thirty days […]

A trial was conduced to evaluate the effects of Tifton hay (Cynodon dactylon) supplemented with multinutrient blocks formulated using different molasses levels on digestibility, intake, and blood urea level. Four Hereford steers, one year old, weighing on average 196 kg in the beginning of the experiment, were assigned to a 4 x 4 latin square. The treatments were: Tifton hay and Tifton hay plus supplementation with either 25, 30, 35, and 40% molasses levels in multinutrient blocks. However, to include […]

The objective of this work was to study DM, NDF, CP and IPND ruminal kinectics of irrigated Tanzaniagrass (Panicum maximum Jacq.). Simulated grazed samples were collected on three periods of the year (spring, summer and fall), under three post grazed stubbles intensities (low, medium and high). Three rumen cannulated animals were assigned to a 3 x 3 Latin square design to determine the in situ degradability until 96 hours of incubation. NDF, CP and IPND were determined by NIRS in […]

The objective of this study was to evaluate the effects of feeding alfalfa haylage with microbial inoculat on dry matter intake, milk yield and composition in Holstein cows, at 135 ± 16.4 days in milk. A cross-over design with two periods of sampling was used. Treatments were alfalfa haylage (50.0% DM and 16.5% CP) control or microbially inoculated with Silobac® product (Lactobacillus plantarum and Pediococcus pentosaceus). Each experimental period extended for twenty-one days, the last five used for data collection. […]

The objective of this study was analyze the colour, pH, weight loss by cooking (PPC) and shear force (FC) of the Longissimus dorsi (LD) and semimembranosus (SM) muscles of Santa Inês (SI x SI) and Texel x Santa Inês (T x SI) lambs, slaughtered at different live weights. Thirteen males and fourteen females were slaughtered at 15, 25, 35 and 45 of live weight. The carcasses were kept during twenty-four hours at 2ºC and during that time the pH was […]