This study was carried out to evaluate the parameters related to hatchability of fertile eggs of Japanese quails. The eggs were stored for three periods (0, 72, and 144 hours), and incubated at two humidity (55 and 65%) and two temperatures (36.5 and 37.5°C) levels. A complete randomized design with a 3 x 2 x 2 (storage period x humidity x temperature) factorial arrangement was used. Evaluations were performed at 276, 324, 362, and 420 hours of incubation and at […]

Two trials were carried out to evaluate performance, balance and retention of EE, DM and CP and biometrical measures of digestive organs of broiler chicks fed different dietary CP levels in the pre-starter period (1 – 7 d). In the first experiment, 560 one-day-old Avian Farms chicks were allotted to a complete randomized design with ten treatments, with a 5 x 2 (protein levels: 18, 20, 22, 24, and 26% x sex) factorial arrangement and four replicates of 14 birds […]

The purpose of this work was to evaluate the effects of probiotics, prebiotics and herbal extracts as alternatives to antimicrobial agents (as growth promoters) on intestinal microbiology , diarrhea incidence, and on performance of weanling pigs. Two randomized complete block design experiments were carried out during 35 days to compare five treatments: control – basal diet; antimicrobial – basal diet plus Zn bacitracin and olaquindox (50 ppm of each); probiotic – basal diet plus 1,300 ppm of probiotic (Bacillus subtilis […]

The objective of this trial was to evaluate quantitative and qualitative traits of carcass and meat from grazing steers submitted to one of the following three supplementation strategies: daily supplementation (DS), alternate days supplementation (AS) or Monday to Friday supplementation (MFS). Twenty-four crossbred steers (Bos indicus x Bos taurus) averaging 230 kg of initial body were used in a completely randomized block design (three treatments and eight replicates/treatment). Animals were maintained in pasture of Brachiaria brizantha cv. Marandu from the […]

The effects of different milking management on metabolism, cortisol levels, and milk yield of Holstein cows were investigated in this trial. Eighteen Holstein cows and calves were randomly assigned to one of the following three treatments: T1) cows were separated from their calves 6 h after parturition but reunited with them for two daily periods of 30 minutes each; T2) cows were separated from their calves 6 h after parturition; or T3) cows were maintained with their calves during the […]

The work aimed to evaluate the effect of the irrigation on the production of biomass and the nutritional value of Panicum maximum, Jacq. cv. Mombaça and Pennisetum purpureum Schum, cv. Napier. Four treatments were tested, consisting of the combination of irrigation levels and two forages. A split-plot arrangement in time and space in a complete randomized block design was used, with more than one observation per treatment, per block. The forages were evaluated under rotational stocking, using F1 European-zebu steers, […]

This trial evaluated the effects of different levels of supplementation on the growth of weaned female beef calves grazing native pasture during the fall. Development of these same animals grazing pastures of black oat (Avena strigosa Schreb) and annual ryegrass (Lolium multiflorum Lam) during the winter were also investigated. One hundred-eighteen female calves averaging seven months of age from three distinct herds: H1 and H2 (Aberdeen Angus animals) and H3 (crossbred Aberdeen Angus animals) were used. Calves grazing the native […]

The objective of this trial was to evaluate the effects of castration and slaughtering age on subjective and instrumental characteristics of meat from Corriedale lambs raised on native pasture. Sixty male lambs (30 castrated and 30 intact) slaughtered at 120, 210 and 360 days of age were used in this experiment. The Longissimus dorsi muscle was used for all meat evaluations and analysis. No significant castration ´ slaughtering age interaction was observed for the studied variables. A significant slaughtering age […]

The objective of this trial was to investigate the effects of diets containing corn silage, bermudagrass hay, or elephantgrass silage on intake and apparent total tract and partial digestibilities of nutrients in cattle. A forage to concentrate (soybean meal) ratio of 90:10 was used. Six ruminally and omasally fistulated bovines averaging 351 kg of initial body weight were used in two replicated 3 x 3 Latin squares. Each experimental period lasted 16 days with 10 days for animal adaptation and […]

This experiment was conducted to estimate DM digestibility, fecal output, and DM intake of sheep fed a diet containing oat hay and concentrate. Treatments consisted of two methods of administration of the external marker alkane (C32): equilibrium and pulse dose. In the equilibrium treatment, animals received one daily pellet of cellulose containing 100 mg of C32 during eight days (four days for reach steady state conditions and five days for sample collection). Animals in the pulse dose treatment received only […]