Results 21 to 30 of about 3,440 (137)

ASPECTOS CLÍNICOS E ANATOMOHISTOPATOLÓGICOS DE PINTOS DE CORTE ORIUNDOS DE OVOS INOCULADOS EXPERIMENTALMENTE COM Salmonella Enteritidis FAGOTIPO 4

open access: yesCiência Animal Brasileira, 2009
Desenvolveram-se dois experimentos para avaliar a capacidade invasiva e os efeitos da Salmonella enterica sorovar Enteritidis fagotipo 4 de origem aviária, inoculada in ovo de linhagens de frango de corte.
Maria Auxiliadora Andrade   +5 more
doaj   +1 more source

Carbohydrate-rich supplements can improve nitrogen use efficiency and mitigate nitrogenous gas emissions from the excreta of dairy cows grazing temperate grass

open access: yesAnimal, 2020
Temperate pasture species constitute a source of protein for dairy cattle. On the other hand, from an environmental perspective, their high N content can increase N excretion and nitrogenous gas emissions by livestock.
J.G.R. Almeida   +6 more
doaj   +1 more source

Yeast culture combined with Lithothamnium increases the performance of feedlot steers

open access: yesSemina: Ciências Agrárias
The objective of this study was to evaluate the effectiveness of adding yeast culture (Saccharomyces cerevisiae) combined with Lithothamnium to the diet of feedlot steers through weight gain, dry matter (DM) intake, apparent DM digestibility, and ...
Paulo Victor Pinheiro Cesar   +8 more
doaj   +1 more source

Use of palm oil cake in diets for slow growing chickens

open access: yesMedicina Veterinária, 2020
Looking for food alternatives for slow-growing broiler chickens is a necessity to boost production, which is mainly conducted by small and medium producers linked to family farming, especially in the Amazon region.
Janaína de Cássia Braga Arruda   +5 more
doaj  

Assessing the Effects of Biodiesel Production on Sustainability: A Bayesian Two‐Stage Data Envelopment Analysis Approach

open access: yesSustainable Development, EarlyView.
ABSTRACT Sustainable development transforms production systems, requiring integrated environmental, social, and economic strategies. Energy systems are key agro‐industrial supply chains in developing countries. Brazil's soybean supply chain impacts Gross Domestic Product, mainly through exports.
Aline Veronese da Silva   +3 more
wiley   +1 more source

Frost Decreases Fruit Production in a Neotropical Savanna: Implications for Frugivorous Bird Abundances

open access: yesBiotropica, Volume 58, Issue 3, May 2026.
Severe frost events seem to be happening on average every 5 years, rather than 7 years, as previously reported in the southern limit of the Cerrado, a Neotropical savanna. We conducted this study in the Cerrado, where severe frost events allowed us to compare fruit production and frugivorous bird abundance before and after the disturbance.
Mariana Campagnoli   +2 more
wiley   +1 more source

Reducing Nitrogen Fertilizer Dependency in Tropical Pastures Through Azospirillum Brasilense and Pseudomonas Fluorescens Coinoculation

open access: yesNew Zealand Journal of Agricultural Research, Volume 69, Issue 2, April 2026.
Coinoculation with Azospirillum brasilense and Pseudomonas fluorescens was associated with maintained forage productivity under reduced nitrogen (N) fertilizer rates in tropical pastures. This hypothesis was evaluated in a 2‐year field experiment conducted over two consecutive growing seasons (2022 and 2023) the State University of Goiás, São Luís de ...
Lucas Henrique Ferreira Santos   +11 more
wiley   +1 more source

Evaluation of Motor Changes and Toxicity of Insecticides Fipronil and Imidacloprid in Africanized Honey Bees (Hymenoptera: Apidae)

open access: yesSociobiology, 2017
Honey bees are important pollinators and are essential in beekeeping. Honey bees get exposed to systemic pesticides while foraging in contaminated fields, and it is important to know the toxicity (LD50) and evaluate the impacts of bees’ exposure to these
Juliana Sartori Lunardi   +2 more
doaj   +1 more source

Chrysoperla externa (Neuroptera: Chrysopidae) as a Potential Biological Control Agent of Raoiella indica (Acari: Tenuipalpidae)

open access: yesEntomologia Experimentalis et Applicata, Volume 174, Issue 4, Page 335-342, April 2026.
First and third instar Chrysoperla externa showed efficient predatory capacity at low R. indica density, but second instar C. externa exhibits a density‐dependent predatory ability. The lacewing C. externa shows promise as a biocontrol agent for R. indica in coconut because it consumed 8362 R. indica females across all its larval instars.
Luis O. Viteri   +6 more
wiley   +1 more source

Hyperdominant Trees Reveal Savanna Vulnerability Under Climate Change

open access: yesGlobal Change Biology, Volume 32, Issue 4, April 2026.
The Brazilian Cerrado's forest structure relies disproportionately on just 30 hyperdominant tree species, which represent 50% of all individuals despite accounting for only 2% of species richness. This study evaluates their vulnerability under climate change scenarios for 2100.
Facundo Alvarez   +32 more
wiley   +1 more source

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