The objective of this experiment was to evaluate the susceptibility to aerobic deterioration and dry matter losses of fresh sugarcane and silages with or without chemical additives, and diets composed formulated with these bulks. The experiments were conducted in a complete randomized design with four replications, consisting of fresh or ensilaged sugarcane with calcium oxide or limestone at the level of 1% fresh matter. The aerobic stability was assessed of the bulks and diets by monitoring temperature, pH and dry […]

The objective of this study was, by using a path analysis of seed yield in white clover, to obtain basic information for use in management strategies for higher seed production and higher natural reseeding and greater persistence of the species in the pasture. The following variables were analyzed: number of flower buds, number of inflorescences, number of mature inflorescences, number of legumes/inflorescence, weight of 100 seeds and seed yield. The variable most correlated with seed yield was the number of […]

The objective of this study was to select superior genotypes in half-sib populations obtained from crosses between sexual plants and apomictic accessions. The experiment also proposed to compare among and within family and combined selection strategies. Ten plots of sexual plants were randomly distributed among 230 plots of apomictic accessions. After natural pollination, seeds of each sexual plant constituted a half-sib family. Thirty plants of each female progenitor were evaluated in a randomized block design experiment, with five plants per […]

This experiment was carried out to evaluate the forms of phosphorus application, soil sampling and row spacing on critical levels of phosphorus in the soil and shoot for the establishment of elephant grass cv. Napier. The treatments were arranged in three randomized blocks and consisted of five phosphorus levels (0, 1, 2, 3.3 and 5) corresponding, respectively, to 0, 30, 60, 100 and 150 kg/ha P for application on the bottom of the furrow and to 0, 60, 120, 200 […]

The study was conducted with the objective of evaluate different types and volumes of diluents through the reproductive performance of 72 artificially inseminated sows. A randomized complete design was used in a 3 × 2 factorial arrangement, with three diluents and two semen volumes. The semen used was obtained from three boars of known fertility. The ejaculates were diluted in equal parts, with the commercial diluents A, B and C, constituting semen doses of 1.5 billion spermatozoids in volumes of […]

Ratios were assessed between variability components of quantitative traits simulated from the genome incorporating non-additive genetic effects in random mating populations and short-term phenotypic selection. A trait of low (h2 = 0.10) heritability and another of high (h2 = 0.60) heritability were studied, both influenced by 600 bi-allelic loci. Five gene action models were simulated, of which four included complete and positive dominance for 25, 50, 75 and 100% of the loci (D25, D50, D75 and D100, respectively); and one […]

Four hundred and twenty one day-old broilers, Cobb 500, were randomly allotted to 15 treatments with four replications (7 chicks/pen) in a 21-day battery trial to assess the relative availability of phosphorus (RBP) from three feeds with two different genetic characteristics (low phytic phosphorus or conventional). One semi-purified basal diet based on corn starch and soybean meal with the addition of conventional barley, barley with low phytate phosphorus, conventional corn, corn with low phytate phosphorus, conventional soybean meal, soybean meal […]

This experiment was carried to evaluate the performance and egg quality of laying hens in the second production cycle consuming whole corn germ in substitution of corn in the diet. The forced molting procedure of 250 Lohmann LSL laying hens was accomplished in the 66th to 74th weeks of age. In 75th week of age, 192 birds were standardized by weight. The experimental period coreresponded to the interval between the 78th and 90th weeks of age of the hens. Four […]

A study was conducted to evaluate the economic results and the performance of nursery piglets fed diets based on the digestible nutrients of high-moisture corn silage (HMCS). Eighteen crossbred piglets (Landrace × Large White) with an average initial weight of 16.01 kg, were used in the digestibility experiment and 60 crossbred piglets, with an average initial weight of 7.11 kg were used in the performance experiment. A randomized block design was used in both experiments. In the digestibility experiment, a […]

An experiment was conducted to define a protocol to determine metabolizable nutrient and energy values of diets. The metabolizability (M) was calculated of the dry matter (DM); crude protein (CP); gross energy (GE) and AMEn of a single diet. Eighty-one 21-day old (d) male birds were used. The tested methodologies were: Cr2O3 (0.5%) as an indicator (partial collection) or Fe2O3 (1%) as a marker; fasting (0, 4, 6 and 8 h) prior to excreta collection and at the end of […]