Two experiments were carried out with the objective to evaluate the use of cassava root scrapings (CRS) for growing rabbits. In the digestibility assay, 22 rabbits with 50 days of age were distributed in a completely randomized design with two treatments and 11 replicates. Two diets were used, one as reference-diet and one test, in which CRS substituted 25% of DM reference-diet. The digestible values of the DM, CP, NDF, ADF, energy and starch (%DM), were respectively 83.84%, 1.89%, 8.34%, […]

This work aimed to evaluate the effect of two different rearing systems (cages and litter) on productive performance and egg quality of laying hens. The trial was conducted for five experimental periods of 28 days each. Sixty four pullets of the laying strain Isabrown and 64 pullets of the laying strain Hy-Line W-36, with ages of 19 and 21 weeks, respectively, were used. The combination of two rearing systems (conventional cages and floor system with litter) and two layer strains […]

Thirty six mid lactating Holstein cows, 123 days in milk (DIM), were used to evaluate the substitution of ground corn (GC) by soybean hulls (SH) for in total mixed diets containing corn silage as the main forage source and citrus pulp as part of the energy source. The replacement of 0, 10 and 20% of ground corn by soybean hulls in total mixed diets (%DM) were evaluated: SH 0 – 0% SH and 20% GC, CS 10: 10% SH and […]

The objective was to evaluate the addition of additives in the ensiling of sugar cane (Saccharum officinarum L.) on the degradation of DM and components of cellular wall and on ruminal fermentation parameters in bovines fed with diets containing these silages. Five rumen-cannulated Nelore steers were allotted to a 5 x 5 latin square design. The steers were placed in metabolic cages and fed diets with 65% forage (%DM). Five silages were evaluated (wet basis): Control sugar cane, no additives; […]

This experiment was conducted to evaluate the effect of inclusion of coconut meal (CM) in diets on nutrients digestibility, performance and egg characteristics of commercial laying hens. A total of 150 laying hens, with 76 weeks of age was weighed and allotted to a completely randomized design with five treatments and five replicates of six birds in each experimental unit. Five diets were evaluated, one control, without CM and the others with 5, 10, 15, and 20% of CM. Diets […]

This research was carried out to compare the effect of phytase on performance, in the incorporation and excretion phosphorus in Nile tilápia. Four diets were used: one standard (contol), composed by 3,200 DE kcal ED/kg of ration and 30.0% CP and supplemented with phosphorus (4.0% of dicalcium phosphate), considering the treatment control, and others three, without phosphorus supplementation, with different phytase levels (1,000, 1,500, and 2,000 uf/kg), with four replication, per a period of 82 days. Circular tanks of fiber […]

The intakes and apparent total tract and partial digestibility of nutrients in Holstein x Zebu steers fed diets formulated with four dietary CP levels (9,11,13, and 15%), in DM basis were evaluated. Four rumen and abomasum cannulated castrated animals, averaging initial weight of 343.5 kg, were allotted to a 4 x 4 Latin square design, with four animal and four periods. Each experimental period lasted 18 days (first 10 for adaptation period). The dietary CP levels did not affect the […]

The effect of supplementation of acidifiers in diets for broiler chicks on performance na intestinal morphology was valuated. A total of 2,112 birds was allocated to eight diets, with six replicates, constituted by the addition of antibiotics or acidifiers blenders according to the phase development (from 1 to 7, from 8 to 21 and from 22 to 35 days old), in different composition: control – positive = bacitracin methylene disalicylate (BMD – 55 ppm) + colistin (10 ppm); control-negative = […]

The objective of this trial was to investigate the daily variation in the urinary excretions of creatinine and nitrogen compounds in dairy heifers. It was also of particular interest to determine whether or not estimation of microbial protein synthesis is affected by the number of urinary sampling days. Eleven dairy Holstein heifers averaging 287 ± 49 kg of body weight (BW) in the beginning of the trial were used. Samples of urine were collected during six consecutive days using N. […]

This research evaluated the inclusion of chemical additive and the inoculation with homo and heterofermentative bacteria on the aerobic stability of the Marandu grass silages and on the total mixed ration (TMR). It was conducted three experiments to evaluate sodium benzoate and two inoculants: 1. Lactobacillus plantarum + Propionibacterium and; 2. Lactobacillus buchneri. The silos were opened after 60 days of fermentation; the silages and the TMR containing the silages were placed in a polystyrene box, and transferred to a […]