In order to evaluate the effects of chlorine levels on performance and egg quality of Japanese quails during the production phase, 288 quails with seventeen weeks of age were distributed in a completely randomized design with six treatments, eight replicates and six birds experimental unit. Chlorine levels were: 0.07, 0.12, 0.17, 0.22, 0.27 and 0.32%. Performance and egg quality parameters evaluated were: feed intake (g/bird/day), water consumption (mL/bird/day), production (%), egg weight (g), egg mass (g/bird/day), feed conversion (g/g), moisture […]

This study was carried out to estimate efficiencies of the utilization of metabolizable energy for maintenance (km) and weight gain (kg) and to evaluate the Small Ruminant Nutrition System (SRNS) model in predicting dry matter intake and average daily gain of growing Santa Ines sheep. Twenty-four non-castrated Santa Ines sheep, at 50 days of age and with average body weight of 13.00 ± 0.56 kg, respectively, were used. After a 10-day adaptation period, four animals were slaughtered to be used […]

In this study, the phenotypic diversity of five accessions of giant missionary grass (Axonopus jesuiticus × A. scoparius) was evaluated by using morphophysiological traits. Accessions V 14337, V 14403, V 14404, V 14405 and V 14406 are hybrids derived from spontaneous crossing that occurred in Vale do Itajaí, Santa Catarina, Brazil. Plants were cultivated in greenhouse and evaluated at 60, 90, 120, 150, 180, 210 and 240 days of growth. Variation was observed for dry matter production, phenology and morphological […]

An experiment was conducted aiming to verify the effect of different levels of available phosphorus (AP) in the diet on performance, egg quality, bone tissue and percentages of P, Ca and Mg in excreta produced by quails during the final third of the production cycle. A total of 300 Japanese quails, with 313 days of age, was assigned to 30 experimental units of ten birds. A completely randomized design was used, with five levels of AP (0.15, 0.25, 0.35, 0.45 […]

The objective of this research was to determine the minimal, optimal and maximal temperatures for seed germination of Lotus subbiflorus Lag., using germination percentage, speed, frequency, informational entropy and enthalpy of activation of germination. The experiment was carried out in two lots with four replicates of 100 seeds each. The data were submitted to variance analysis and means were compared by Tukey’s test. Eight constant temperatures (0, 5, 10, 15, 20, 25, 30 and 35 ºC) and light exposition (darkness […]

An experiment was carried out to evaluate the effect of diets with different calcium levels and supplemented with phytase on the performance of broiler chickens in initial (1 to 21 days of age), growing (22 to 35 days of age) and final (36 to 42 days of age) phases. Two thousand one hundred and sixty male broilers from AG Ross 308 line, from 1 to 42 days old were distributed in 6 treatments, with 6 replicates each. A completely randomized […]

Ninety-six barrows from 63 to 103 days of age were used to evaluate the effects of dietary digestible lysine levels on performance and carcass traits of two genetic lines selected for lean deposition. Pigs with initial body weight of 23.800 ± 1.075 kg were allotted in a completely randomized block design, within a 4 × 2 factorial arrangement (four digestible lysine levels: 0.80, 0.90, 1.00, 1.10%, and two genetic lines), with six replicates and two pigs per experimental unit. There […]

The Coastcross-1 growth index in relation to five nitrogen doses (0, 100, 200, 300 and 400 kg/ha.year) and two regrowth ages (28 and 42 days) were evaluated. Nitrogen doses were arranged in a 5 × 2 factorial scheme in a randomized complete block design with three repetitions. Nitrogen fertilization was performed in three applications right after the forage harvesting. Higher values for leaf/stem and leaf weight ratio were observed at 28-d regrowth, in comparison with the 42 days of regrowth. […]

The objective of this research was to evaluate the effects of tiller age on morphogenic and structural characteristics of guinea grass cv. Mombaca subjected to intermittent stocking and three stubble heights: 30 cm, 50 cm and 50-30 cm. Stubble heights were assigned to experimental units in a completely randomized block design with three replicates. Grazing was performed when canopy intercepted 95% of light incidence. Leaf appearance rate, leaf elongation rate and number of live leaves per tiller were higher in […]

This study was accomplished aiming to obtain prediction equations to estimate the values of corrected apparent metabolizable energy (AMEn) of the protein feedstuffs usually used in broiler rations, through the meta-analysis principle. Literature review of the studies realized in Brazil was performed to catalog information about values of AMEn and chemical composition of the feedstuffs reported (CP = crude protein; EE = ether extract; CF = crude fiber; NDF = neutral detergent fiber; ADF = acid detergent fiber). Effects of […]