Navegação Ciências Agrárias por Título
Resultados 2782-2801 de 3908
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Performance comparison between broilers positive and negative for antibodies against the chicken anemia virus
(2003) [Artigo de periódico]The chicken anemia virus (CAV) is present in virtually every country investigated, Brazil including. The aim of this study was to determine what the difference in performance is between positive (progeny of breeders ... -
Performance of Braford steers grazing on cultivated pastures and fed or not fed an energy supplement
(2013) [Artigo de periódico]This experiment evaluated the performance of 84 Braford steers grazing on summer and winter cultivated pastures fed or not fed an energy-protein supplement. Steers were 10 months old and weighed, on average, 165 kg at the ... -
Performance of broilers fed different dietary choline sources and levels
(2017) [Artigo de periódico]Two experiments were carried out to evaluate the bioequivalence of a commercial phosphatidylcholine source (Biocholine™) as an alternative to choline chloride and the choline requirements of broilers of a fast-growth strain. ... -
Performance of different drying methods and their effects on the physiological quality of grain sorghum seeds (S. bicolor (L.) Moench)
(2008) [Artigo de periódico]O objetivo deste trabalho foi verificar a qualidade fisiológica das sementes de sorgo granífero e determinar a curva de secagem em função da utilização de diferentes métodos de secagem. As sementes com teor de água inicial ... -
Performance of flooded rice grown in succession to winter cover crops
(2018) [Artigo de periódico]Mean grain yield of flooded rice in southern Brazil has increased in recent years due to the use of high-yield cultivars and improvement of crop management practices. Nevertheless, stagnation in grain yields has been ... -
Performance of heifers supplemented with different levels of corn on pasture
(2016) [Artigo de periódico] -
Performance of Lotus corniculatus L. genotypes submitted to cutting interval : subsidies to a breeding program
(2011) [Artigo de periódico]The objective of this work was to evaluate the response of five birdsfoot trefoil populations (Lotus corniculatus L.), selected under severe and intense grazing (P38, P37, P9 and P3) or cutting (population Corte), one ... -
Performance of low birth-weight piglets upon protein-energy and/or colostrum supplementation
(2018) [Artigo de periódico]The study aimed to investigate the effect of oral protein-energy supplement (OPES) and/or extra colostrum within the first few hours of life on the survival and growth performance of low birth-weight piglets during the ... -
Performance of 'Oneco' mandarin on six rootstocks in South Brazil
(2011) [Artigo de periódico]The objective of this work was to assess the effect of six rootstocks on yield, fruit quality, and growth of 'Oneco' mandarin during the first seven harvesting seasons, in Butiá, Rio Grande do Sul State, Brazil. The ... -
Pericardiectomia parcial toracoscópica em um cão
(2009) [Artigo de periódico]A efusão pericárdica em cães frequentemente é idiopática ou secundária à neoplasia. O acúmulo de líquido causa aumento da pressão intrapericárdica e alterações hemodinâmicas. Este trabalho relata o tratamento cirúrgico ... -
Pericardite em suínos ao abate no Rio Grande Sul: avaliação de agentes bacterianos e lesões associadas
(2014) [Artigo de periódico]O objetivo do presente estudo foi identificar a frequência de lesões macroscópicas e microscópicas e dos agentes bacterianos envolvidos em pericardites em suínos no abate no Estado do Rio Grande do Sul. As amostras foram ... -
Perinephric pseudocyst in a two-month-old female cat
(2018) [Artigo de periódico]Background: Perinephric pseudocyst is defined as an accumulation of fluid in fibrous sacs surrounding one or both kidneys, and may be located in the subcapsular or extracapsular region. Histologically, it is characterized ... -
Período anterior ao dano no rendimento econômico (PADRE) : nova abordagem sobre os períodos de interferência entre plantas daninhas e cultivadas
(2005) [Artigo de periódico]Admite-se a hipótese de que aspectos econômicos como o custo de controle e o valor monetário dos grãos devem ser utilizados como critério para determinar o período aceitável de interferência das plantas daninhas antes de ... -
Período crítico para controle de Brachiaria plantaginea em função de épocas de semeadura da soja após dessecação da cobertura vegetal
(2002) [Artigo de periódico]Este trabalho objetivou avaliar o impacto da época de semeadura da soja após a dessecação da cobertura vegetal sobre o controle de papuã (Brachiaria plantaginea) e quantificar a influência da época de controle na produtividade ... -
Períodos de drenagem do solo durante o perfilhamento e características agronômicas de cultivares de arroz irrigado no sistema pré-germinado
(2008) [Artigo de periódico]A retirada da água no perfilhamento é uma prática comumente efetuada pelos produtores de arroz irrigado no Estado de Santa Catarina, visando a estimular o enraizamento, prevenir o acamamento e facilitar a colheita. Contudo, ... -
Peripheral nerve sheath tumor in the upper eyelid in a dog
(2021) [Artigo de periódico]Background: Peripheral nerve sheath tumors are most commonly found on the head and neck regions of both dogs and people. Schwannomas are rarely observed in ophthalmic areas. When they occur, ocular Schwannomas are usually ... -
Peripheral T-cell lymphoma in the oral cavity of a cow
(2019) [Artigo de periódico]Background: Squamous cell carcinomas and lymphomas are the most prevalent neoplasms in cattle, the latter usually being attributed to infection by bovine leukemia virus (BLV). Neoplasms of the oral cavity are sporadic in ... -
Peritoneal fluid modulates the sperm acrosomal exocytosis induced by N-acetylglucosaminyl neolycoprotein
(1999) [Artigo de periódico]The effect of peritoneal fluid (PF) on the human sperm acrosome reaction (AR) was tested. Sperm was pre-incubated with PF and the AR was induced by calcium ionophore A23187 and a neoglycoprotein bearing N-acetylglycosamine ... -
Perreyia flavipes larvae toxicity
(2012) [Artigo de periódico]Fresh or thawed Perreyia lavipes larvae were ground and mixed with water and orally ad ministered to sheep. At 5mg/kg, neither clinical nor enzymatic changes were observed. Unique do ses of 7.5 and 10mg/kg induced ...
