Results 11 to 20 of about 1,112,497 (266)

Stable Isotope Analysis Reveals That Agricultural Habitat Provides an Important Dietary Component for Nonbreeding Dunlin

Avian Conservation and Ecology, 2005
Although shorebirds spending the winter in temperate areas frequently use estuarine and supratidal (upland) feeding habitats, the relative contribution of each habitat to individual diets has not been directly quantified.
Lesley Joan Evans Ogden, Keith A. Hobson, David B. Lank, Shabtai Bittman   +3 more
doaj   +1 more source

Reconstructing the historical wintering destinations of seabirds using stable isotope analyses of museum specimens [PDF]

Royal Society Open Science
Stable isotope analyses of museum specimens provide an opportunity to examine long-term changes in avian migration strategies. Here, we determined stable isotopes of carbon (δ13C) and nitrogen (δ15N) in body feathers (reflecting diet during the non ...
William F. Mills, Juliette Waterman, Richard A. Phillips, Gayatri Ramakrishnan, Ramandeep Nijjar, Andrés E. Ibañez, Rona A. R. McGill, Lara M. Morales, Diego Montalti, Stuart Black   +9 more
doaj   +1 more source

N Utilization, Residual and Loss Characteristics of Spring-Topdressing (¹⁵N-urea) Pear Orchards in the Old Course of the Yellow River Area

Agronomy, 2022
In the old course of the Yellow River area, most orchards are over-applied with nitrogen (N) fertilizers. To improve N management in this area, a 15N tracing experiment was conducted to investigate the absorption, distribution and loss of spring ...
Lin Zhao, Zhihang Jia, Gangbo Li, Ting Zhang, Meng Wei   +4 more
doaj   +1 more source

Rastreabilidade da farinha de carne e ossos bovinos em ovos de poedeiras comerciais pela técnica dos isótopos estáveis do carbono e nitrogênio Traceability of bovine meat and bones meal in eggs of commercial laying hens through carbon and nitrogen stable isotopes technique

Revista Brasileira de Zootecnia, 2011
Objetivou-se com este estudo rastrear a inclusão de farinha de carne e ossos bovinos em dietas para poedeiras comerciais, por meio da análise dos ovos e de suas frações (gema e albúmen), pela técnica dos isótopos estáveis do carbono e nitrogênio e ...
Juliana Célia Denadai, Carlos Ducatti, José Roberto Sartori, Antonio Celso Pezzato, Rosana Gottmann   +4 more
doaj   +1 more source

The effect of sheep genetic merit and feed allowance on nitrogen partitioning and isotopic discrimination

Animal, 2021
Animal nitrogen (N) partitioning is a key parameter for profitability and sustainability of ruminant production systems, which may be predicted from N isotopic discrimination or fractionation (Δ15N).
H. Khanaki, R.J. Dewhurst, B.J. Leury, G. Cantalapiedra-Hijar, G.R. Edwards, C. Logan, L. Cheng   +6 more
doaj   +1 more source

Traceability of bovine meat and bone meal in poultry by stable isotope analysis

Brazilian Journal of Poultry Science, 2006
Bovine meat and bone meal (MBM) was widely used in animal diets until outbreaks of Bovine Spongiform Encefalopathy (BSE) occurred in some countries.
AS Carrijo, AC Pezzato, C Ducatti, JR Sartori, L Trinca, ET Silva   +5 more
doaj   +1 more source

The Nitrogen Fixation and Yielding of Pea in Different Soil Tillage Systems

Agronomy, 2022
The field experiment was carried out in 2013 and 2014 as part of a long-term experiment to test the influence of different soil tillage systems (conventional, reduced, direct sowing) on (a) the yield of summer pea (Pisum sativum L.) and (b) the amount of
Agnieszka Faligowska, Stanisław Kalembasa, Dorota Kalembasa, Katarzyna Panasiewicz, Grażyna Szymańska, Karolina Ratajczak, Grzegorz Skrzypczak   +6 more
doaj   +1 more source

Standardization of A Sample-Processing Methodology for Stable Isotope Studies in Poultry

Brazilian Journal of Poultry Science, 2019
The objective of this study was to determine if lipid extraction processes alter the isotopic value of δ13C and δ15N of tissues (pectoral muscle, thigh and liver) and eggs and if the use of anticoagulants interferes with blood and plasma δ13C and δ15N ...
JC Denadai, JB Sartori, AC Pezzato, VE Costa, MMP Sartori, BES Petinati, RS Gennari, ET Silva, MAG Carvalho, AND Ishizuka   +9 more
doaj   +1 more source

Sources of Nitrogen for Winter Triticale (Triticosecale Wittm. ex A.Camus) Succeeding Pea (Pisum sativum L.)

Agronomy, 2021
Atmospheric nitrogen biologically reduced in legumes root nodule and accumulated in their postharvest residues may be of great importance as a source of this macronutrient for succeeding crops.
Andrzej Wysokinski, Izabela Lozak, Beata Kuziemska   +2 more
doaj   +1 more source

Utilização do nitrogênio da palha de milho e de adubos verdes pela cultura do milho Utilization of nitrogen from corn plant residues and green manures by corn

Revista Brasileira de Ciência do Solo, 2008
A qualidade dos resíduos vegetais de culturas comerciais e adubos verdes influencia a taxa de mineralização/imobilização de N e o respectivo aproveitamento desse nutriente pelas subseqüentes culturas.
Edson Cabral da Silva, Takashi Muraoka, Salatiér Buzetti, Freddy Sinencio Contreras Espinal, Paulo César Ocheuze Trivelin   +4 more
doaj   +1 more source