Potencial genético de duas raças brasileiras de milho para fins de melhoramento. II Caracteres da planta.

Estudou-se o potencial genético das raças brasileiras de milho Cravo e Entrelaçado, com ênfase especial para altura da planta (AP), altura da espiga (AE) e número de ramificações do pendão (NRP). Após o cruzamento inicial de cada uma das raças com a população melhorada e adaptada ESALQ-PB I (E), as populações semi-exóticas Cravo x ESALQPB I (EQ e Entrelaçado x ESALQ-PB I (EE) foram recombinadas duas vezes. Foram escolhidas 196 famílias de meios irmãos de cada população para constituírem o material experimental, objetivando verificar as mudanças ocorridas nas médias e determinar a potencialidade das populações EC e EE ern relação A população adaptada E. Foram verificados benefícios com a introgressão de genes da raça Cravo, uma vez que as médias de AP, AE e NRP da população semi-exótica EC foram mais baixas que as da população adaptada, enquanto que para a população semi-exótica EE estes benefícios não foram verificados. Os valores; encontrados para as estimativas dos parâmetros genéticos mostraram que para os três caracteres das populações semi-exóticas há possibilidades de serem conseguidos ganhos substanciais corn esquemas simples de seleção

Avaliação dos impactos econômicos de quatro forrageiras lançadas pela Embrapa.

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Cryptorchidism in Children with Zika-Related Microcephaly.

The genitourinary tract was recently identified as a potential site of complications related to the congenital Zika syndrome (CZS). We provide the first report of a series of cryptorchidism cases in 3-year-old children with Zika-related microcephaly who underwent consultations between October 2018 and April 2019 as part of the follow-up of the children cohort of the Microcephaly Epidemic Research Group, Pernambuco, Brazil. Of the 22 males examined, eight (36.4%) presented with cryptorchidism. Among 14 undescended testis cases, 11 (78.6%) could be palpated in the inguinal region. Seven of the eight children had severe microcephaly. Conventional risk factors for cryptorchidism were relatively infrequent in these children. We hypothesize that cryptorchidism is an additional manifestation of CZS present in children with severe microcephaly. As in our cases, for most of the children, the testes were located in the inguinal region, and the possible mechanisms for cryptorchidism were gubernaculum disturbance or cremasteric abnormality

Consumo voluntário de quatro genótipos de capim-elefante.

Objetivou-se com o presente trabalho avaliar o consumo de quatro genótipos de capim-Elefante (G1 - CNPGL 91-11-2, G2 - CNPGL 96-27-3, G3 - CNPGL 96-24-1 e G4 - CNPGL 00-1-3) em Belém, Estado do Pará. Foram utilizados como animais experimentais 20 ovinos, machos, da raça Santa Inês, mantidos em gaiolas metabólicas, distribuídos em delineamento inteiramente casualizado, com quatro tratamentos (genótipos de capim-Elefante) e cinco repetições cada. O consumo dos genótipos foi mensurado diariamente, por meio da diferença de peso entre o alimento fornecido e as sobras. Foram determinados os consumos de matéria seca (MS), proteína bruta (PB), extrato etéreo (EE), fibra em detergente neutro (FDN), fibra em detergente ácido (FDA) e carboidratos não fibrosos (CNF). O consumo de MS em g/animal/dia e em g/UTM, diferiu (P0,05) tanto em g/animal/dia como em % peso vivo. A variação genotípica dos materiais genéticos de capim-Elefante avaliados, afeta o consumo de nutrientes como, PB, EE e CNF

The frequency and clinical presentation of Zika virus coinfections: a systematic review.

BACKGROUND: There is limited knowledge on the influence of concurrent coinfections on the clinical presentation of Zika virus (ZIKV) disease. METHODS: To better understand the types, frequencies and clinical manifestations of ZIKV coinfections, we did a systematic review of four databases (PubMed, Embase, Web of Science, LILACS) without restrictions for studies on ZIKV coinfections confirmed by nucleic acid (quantitative real-time-PCR) testing of ZIKV and coinfecting pathogens. The review aimed to identify cohort, cross-sectional, case series and case report studies that described frequencies and/or clinical signs and symptoms of ZIKV coinfections. Conference abstracts, reviews, commentaries and studies with imprecise pathogen diagnoses and/or no clinical evaluations were excluded. RESULTS: The search identified 34 articles from 10 countries, comprising 2 cohort, 10 cross-sectional, 8 case series and 14 case report studies. Coinfections were most frequently reported to have occurred with other arthropod-borne viruses (arboviruses); out of the 213 coinfections described, ZIKV infections co-occurred with chikungunya in 115 cases, with dengue in 68 cases and with both viruses in 19 cases. Other coinfecting agents included human immunodeficiency, Epstein-Barr, human herpes and Mayaro viruses, Leptospira spp, Toxoplasma gondii and Schistosoma mansoni. ZIKV-coinfected cases primarily presented with mild clinical features, typical of ZIKV monoinfection; however, 9% of cases in cohort and cross-sectional studies were reported to experience complications. CONCLUSION: Based on the evidence collated in this review, coinfections do not appear to strongly influence the clinical manifestations of uncomplicated ZIKV infections. Further research is needed to confirm whether risk of severe complications is altered when ZIKV infection co-occurs with other infections. PROSPERO REGISTRATION NUMBER: CRD42018111023