Results 101 to 110 of about 471,764 (309)

Placental crises: disruptive selection and maternal under‐investment as the foundations of mammalian placental evolution and dysfunction

Biological Reviews, EarlyView.
ABSTRACT Among the vertebrates, mammals are notable for the dominance of live birth and placental nutrition. The structural diversity of the mammalian placenta is remarkable, despite sharing a single common ancestor and conserved physiological functions.
Davis Laundon, Neil J. Gostling, Ian G. Reddin, Bram G. Sengers, Pascale Chavatte‐Palmer, Rohan M. Lewis   +5 more
wiley   +1 more source

Intestinal microbiota of broiler chickens as affected by litter management regimens

Frontiers in Microbiology, 2016
Poultry litter is a mixture of bedding materials and enteric bacteria excreted by chickens, and it is typically reused for multiple growth cycles in commercial broiler production.
Zhongtang eYu, Lingling eWang, Michael eLilburn   +2 more
doaj   +1 more source

AN EVALUATION OF AN ECONOMIC STRATEGY FOR PREVENTING WATER POLLUTION USING A PHOSPHORUS CONSISTENT TRANSPORTATION MODEL: A CASE OF BROILER LITTER MANAGEMENT [PDF]

We calculated the profitability of using broiler litter as a source of plant nutrient using a phosphorus consistent litter application rule. We found that each ton of litter can be transferred cost effectively up to 164 miles from the production ...
Adhikari, Murali, Martin, Neil R., Jr., Paudel, Krishna P.   +2 more
core   +1 more source

Spatial metrics in fire ecology: seeking consistency amidst complexity

Biological Reviews, EarlyView.
ABSTRACT Technological advances, including remote sensing, have led to a proliferation of metrics used in ecological studies to examine spatial patterns of fire regimes and their ecological effects. Researchers can use many different metrics to analyse spatial variation in both fire events and resulting fire regimes, including fire size, shape ...
Alexander R. Carey, Geoffrey J. Cary, Teigan Cremona, Hugh F. Davies, Brett P. Murphy, Sam C. Banks   +5 more
wiley   +1 more source

Níveis de lisina em rações para fêmeas suínas em lactação Lysine levels in diets for lactating sows

Revista Brasileira de Zootecnia, 2006
Foram utilizadas 65 porcas (Large White x Landrace) com 217,36 ± 21,35 kg para avaliação de diferentes níveis de lisina total (0,950; 1,025; 1,100; 1,175 e 1,250%) na ração para a fase de 21 dias de lactação.
Christiane Garcia Vilela Nunes, Rita Flavia Miranda de Oliveira, Juarez Lopes Donzele, Will Pereira de Oliveira, Bruno Alexander Nunes Silva, Marvio Lobão Teixeira de Abreu   +5 more
doaj   +1 more source

Too Litter, Too Late: Economic Logistics of Transporting Nutrient-Rich Poultry Litter Out of Nutrient-Saturated Regions [PDF]

Export of excess litter from concentrated animal production regions has become a pressing issue. A break even price for poultry litter in nutrient-deficient areas was identified through a math programming model using willingness to pay data from crop ...
Carreira, Rita I., Goodwin, Harold L., Jr., Young, Kenneth B.   +2 more
core   +1 more source

A roadmap to key traits of invasive Drosophilidae

Biological Reviews, EarlyView.
ABSTRACT Biological invasions have intensified in recent decades, mostly driven by international trade and travel, raising significant concerns, particularly regarding insect pests. Once non‐native species establish, they can disrupt natural ecosystem stability, undermine agroecosystem sustainability and cause substantial economic losses.
Gwenaëlle Deconninck, Bréa Raynaud‐Berton, Méghan Boulembert, Olivier Chabrerie, Aude Couty, Franck Dedeine, Patrice Eslin, Vincent Foray, Romain Georges, Patricia Gibert, Laurence Mouton, Sylvain Pincebourde, David Renault, Christelle Suppo, Hervé Colinet   +14 more
wiley   +1 more source

THE FEASIBILITY OF POULTRY LITTER TRANSPORTATION FROM ENVIRONMENTALLY SENSITIVE AREAS TO DELTA ROW CROP PRODUCTION [PDF]

Arkansas ranks first in broiler production in the USA with more than a billion broiler and 1.5 million tons of litter produced in 1993. Transporting litter from western to eastern Arkansas can accomplish two goals: 1) avoid potential threat to clean ...
Cochran, Mark J., Govindasamy, Ramu
core   +1 more source

Addressing the Attitude Behaviour Perception Gap—Multimethod Sustainable Tourist Behaviour Evaluation

Business Strategy and the Environment, EarlyView.
ABSTRACT Quantitative and perceptual studies have been used to define and model sustainable tourist behaviour in past years, but few studies have undertaken qualitative research of actual behaviour to delve deeper into understanding the different classifications of such behaviour. This research employed a three‐phase design, comprising a pretrip survey,
Rachel Dodds, Mark Robert Holmes
wiley   +1 more source

FEATURES OF CARBON SEQUESTRATION IN SIBERIAN LARCH FOREST STANDS IN THE SOUTHERN FOREST-STEPPE OF THE OMSK REGION

Вопросы лесной науки
Relevance and objectives. Modern climate change attracts close attention to the study of climate-regulating functions of forest ecosystems. Of particular importance in this regard are coniferous forests, which are widespread in our country and form a ...
P. N. Shulpina, O. P. Bazhenova, V. V. Kaganov   +2 more
doaj   +1 more source