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For the Amazon, it is important to encourage the production of native fish, since there are several species of zootechnical interest. For this, it is necessary to know the species since its acquisition, production, processing, and marketing. Therefore, the aim of this study was to analyze the yield, correlations, and profitability of different cuts of black pacu ( Colossoma macropomum ) in five weight categories. Data from 220 black pacus were obtained, with a weight range of 2725 ± 1975 g. Yields of commercial cuts and morphometric measurements were evaluated in five weight classes. Kruskal-Wallis test ( α  = 0.05) was used to compare the average income. And, to verify the correlation between the morphometric measures and the yields, Spearman's correlation was performed ( α  = 0.05). To obtain the profit of the weight classes due to the cut produced, an economic analysis was carried out considering the cost of buying the fish. Yields of fillet, ribs, and steak were higher in classes 3 and 4, while in the same classes, the yield of residues was the lowest. Despite classes 1, 2, and 5 showing lower yields, the economic analysis presented that the production of fillet and ribs was profitable. The measures of total length and standard length have a high positive correlation with the yield of meat in all classes, as well as the average circumference and caudal circumference in classes 1, 2, and 4, which can be used to determine the yields of this commercial cut., Competing Interests: The authors declare that there are no conflicts of personal, financial, commercial, political, or academic interest., (Copyright © 2021 Jucilene Cavali et al.)

The aim of this study was to evaluate the physiological, zootechnical, and environmental benefits of the use of growth-promoting virginiamycin in the pirarucu diet. The research was conducted at the Carlos Eduardo Matiazze Fish Center, Federal University of Rondônia. In this study, 96 pirarucu fish were distributed in excavated nursery, divided into two treatment groups, control (0.0 mg kg -1 ) and treatment (75.0 mg kg -1 ) of feed with virginiamycin, with 8 replications in a completely randomized design. With virginiamycin being incorporated into commercial feed, for 107 days of cultivation, the fish were slaughtered with an average weight of 9.18 kg. Carcass weight, flesh, residues, and internal organs/guts were evaluated to calculate slaughter yields, Spearman's correlation, and subsequently regression. For the quantification of micronuclei, a count of 1,000 cells per blade was determined. The means of the results obtained were contrasted by the Student's t -test ( α  = 0.05). Virginiamycin did not cause oscillations in the limnological variables of the nursery but could reduce micronucleated erythrocytes. The average yields in carcass, flesh, and waste were 67.43, 53.4, and 43.14%, respectively. Virginiamycin provided strong correlations ( ρ 2 ) for better productive yields and lower slaughter residue. The hepatosomatic index indicated a strong relationship between liver weight and fat. Virginiamycin may be recommended for fish farming in pirarucu fattening because it contributes to the productive efficiency and sustainability of the fish farm system., Competing Interests: The authors declare that there are no conflicts of personal, financial, commercial, political, or academic interest., (Copyright © 2020 Jucilene Cavali et al.)

Introduction: Considering the global burden of mental disorders, there is a worldwide need to improve the quality of mental health care. In order to address this issue, a change in how health care professionals are trained may be essential. However, the majority of the few reports published on this field's training programs do not discuss the characteristics associated with the success or failure of these strategies. The purpose of this review was to systematically examine the literature about mental health training programs designed for health care professionals in order to identify the relevant factors associated with their effective implementation., Methods: The MEDLINE/PubMed, SciELO, and Virtual Health Library databases were used to search for articles published before February 2017 and reviewed by two double-blind reviewers., Results: We found 77 original papers about mental health educational programs. Many of these studies were conducted in the USA (39%), addressed depression as the main subject (34%), and applied a quasi-experimental design (52%). Effective interventions were associated with the following characteristics: the use of learner-centered and interactive methodological approaches; a curriculum based on challenges in the trainees' daily routines; the involvement of experts in the program's development; the enrollment of experienced participants; interdisciplinary group work; flexible timing; the use of e-learning resources; and optimizing the implementation of knowledge into the participants' routine work practices., Implications for Practice: These results will be helpful for planning and improving the quality of future educational programs in mental health.

Adolescence is a period of vulnerability to substance use disorders (SUDs). Epidemiological studies indicate that about 23% of Brazilian adolescents use drugs, with alcohol being the most widely consumed substance. The etiology of SUDs is complex, influenced by an interaction of genetic risk, individual development, environmental factors, context of use, and substance used. Clinicians should consider diagnostic criteria and be aware of behavioral changes that may indicate drug use and its consequences in various aspects of adolescent life. Identification and treatment of comorbid conditions is critical to the management of SUDs in this age group. Interventions should restrict access to drugs and facilitate prompt recognition of initial use, preventing progression to serious patterns of abuse or dependence. Intervention should be broad, including academic and occupational activities as well as social relationships and leisure, which are critical to the reestablishment of normal adolescent development.