The effects of different diets and dietary transition on the performance and morphology of the digestive tract of pacu larvae fed two commercial formulated diets and an experimental microencapsulated diet produced by internal gelation were evaluated. Four-day old pacu larvae received the following treatments: only artemia nauplii in increasing amount during the experiment (positive control); larvae maintained at fasting (negative control); three types of formulated diets throughout the experiment (experimental microencapsulated diet, commercial diet NRD1.2/2.0, Inve, USA, and diet Poli-Peixe […]

This research study was conducted to evaluate, by means of microbiological analyses, the preservation of wet brewery waste stored under aerobic and anaerobic conditions, regarding the development of filamentous fungi, yeasts and lactic-acid bacteria. The following treatments were used: untreated brewery waste, pre-dried brewery waste silage, brewery waste silage with effluent drainage and BW silage without effluent drainage. Silos made of PVC and equipped with Bunsen valves to allow gases to escape were used. Dry matter (DM), crude protein (CP), temperature (°C) and […]

The objective of this study was to evaluate the use of probit and logit link functions for the genetic evaluation of early pregnancy using simulated data. The following simulation/analysis structures were constructed: logit/logit, logit/probit, probit/logit, and probit/probit. The percentages of precocious females were 5, 10, 15, 20, 25 and 30% and were adjusted based on a change in the mean of the latent variable. The parametric heritability (h2) was 0.40. Simulation and genetic evaluation were implemented in the R software. […]

The intake of the dry matter (DM), the crude protein (CP) and the metabolizable energy intake (ME) in megacalories per day (Mcal/day) were not affected by the diets. In contrast, the intake of neutral detergent fiber (NDF), in g/kg BW, increased linearly. An increasing linear effect was also observed for the ether extract (EE) intake, whereas a decreasing linear performance was observed for the non-fibrous carbohydrate (NFC) intake. The digestibility of DM, organic matter and NFC decreased linearly with the […]

This study was conducted to evaluate levels of inclusion of zeolite in diets for pigs on performance, carcass characteristics, blood and liver histopathological parameters of these animals in their growing-finishing phases. Eighty-four barrows from commercial hybrids of high genetic potential for meat deposition, with initial weight of 30.34±1.14 kg were distributed in randomized blocks design, with seven levels of adsorbent (0.0-0.0; 1.0-0.5; 1.0-1.0; 2.0-1.0; 2.0-2.0; 3.0-1.5; 3.0-3.0, respectively, on growing and finishing phases), six replicates with two animals per pen, […]

In order to evaluate digestible lysine levels on the performance and carcass traits of castrated male pigs from 60 to 100 days of age, 300 barrows with initial weight of 25.0±0.52 kg were allotted in a completely randomized block design with five treatments (0.65, 0.75, 0.85, 0.95, and 1.05% digestible lysine levels), five replicates, and 12 pigs per experimental unit. There was no effect of digestible lysine levels on average daily feed intake. The average daily gain increased and feed […]

The objective of this study was to identify characteristics of milk production systems from farms in Minas Gerais, Brazil, with major expenses on animal disease prevention. Furthermore, the study aimed at investigating the existence of the negative relationship between prevention and treatment expenditures. The data were obtained from 861 questionnaires from the “Diagnóstico da Pecuária Leiteira do Estado de Minas Gerais em 2005” publication. Thus, factor analysis was utilized to generate variables that are linear combinations of chosen expenditures. These […]

The objective was evaluate the effects of the split suckling at the six first hours after the birth, on the weight at weaning and at 60 days of age and on the serum IgG rate, in piglets from sows of different parturition order. Thirty-three sows were used in a completely randomized design and 2 × 3 factorial arrangement: two post-birth management practices and three groups by parturition order. In the traditional management, piglets fought for the teats and suckled randomly, […]

The objective of this study was to propose and discuss a method to compare the feed into product conversion between two experimental groups of beef cattle based on regression techniques. The mathematical and statistical procedures were developed using a databank of dry matter intake and average daily gain of 380 purebred or crossbred zebu animals on the BR-CORTE nutritional system database. Two groups were selected from the databank and were formed by Nellore (n = 156) or F1 European × […]

Performance, intake, and nutrients digestibility of 32 Morada Nova confined lambs were evaluated, using diets with increasing levels (0, 30, 60, 100%) of melon (Cucumis melo L.) in substitution of corn grain. Animals were about 6 months old, with an average of 15 kg of initial body weight and slaughtered at 25 kg. They were allocated in a completely randomized design with four treatments and eight replicates. The dry matter intake (DMI) presented a quadratic behavior for both sex, varying […]