Results 31 to 40 of about 129,336 (212)

Período de descanso, características estruturais do dossel e ganho de peso vivo de novilhos em pastagem de capim-mombaça sob lotação intermitente Rest period, canopy structural traits and steer body weight gain on intermittently grazed mombaçagrass pasture

Revista Brasileira de Zootecnia, 2005
Em pastagem de capim Panicum maximum cv. Mombaça, avaliou-se o efeito de dois períodos de descanso, definidos pelo tempo necessário para a expansão de 2,5 e 3,5 novas folhas/perfilho, sobre as características estruturais do dossel altura, massa de ...
Emerson Alexandrino, Carlos Augusto Miranda Gomide, Magno José Duarte Cândido, José Alberto Gomide   +3 more
doaj   +1 more source

Seeding Rate Effects on Forage Mass and Vegetation Dynamics of Cool-Season Grass Sod Interseeded with Sorghum-Sudangrass

Agronomy, 2021
Interseeding annual warm-season grasses into perennial cool-season grasses has the potential to increase summer forage mass and nutritive value. Knowledge of how seeding rate affects annual warm-season grass establishment, forage mass, and vegetation ...
John A. Guretzky, Daren D. Redfearn
doaj   +1 more source

Effects of habitat composition and landscape structure on worker foraging distances of five bumblebee species [PDF]

, 2016
Bumblebees (Bombus spp.) are important pollinators of both crops and wild flowers. Their contribution to this essential ecosystem service has been threatened over recent decades by changes in land use, which have led to declines in their populations.
Andrew F. G. Bourke, Benton, Bommarco, Broughton, Burnham, Carvell, Carvell, Carvell, Carvell, Chapman, Charman, Claire Carvell, Cranmer, Cresswell, Darvill, Dramstad, Dramstad, Dreier, Dreier, Dukas, Ellis, Garibaldi, Garratt, Goulson, Goulson, Goulson, Goulson, Greenleaf, Hagen, Herrmann, Holehouse, Holzschuh, Jha, Jinliang Wang, John W. Redhead, Knight, Knight, Kovács-Hostyánszki, Krauss, Lonsdorf, Matthew S. Heard, Moser, Osborne, Osborne, Persson, Prys-Jones, R Core Team, Raine, Redhead, Riitters, Rundlof, Schmid-Hempel, Seirian Sumner, Stanley, Stephanie Dreier, Stewart, Stout, Suzuki, Truett, Walther-Hellwig, Wang, Westphal, Westphal, Westphal, Westphal, William C. Jordan, Williams, Wood   +67 more
core   +5 more sources

Mass Spectrometry Imaging of Specialized Metabolites for Predicting Lichen Fitness and Snail Foraging [PDF]

Plants, 2020
Lichens are slow-growing organisms supposed to synthetize specialized metabolites to protect themselves against diverse grazers. As predicted by the optimal defense theory (ODT), lichens are expected to invest specialized metabolites in higher levels in reproductive tissues compared to thallus.
Gadea, Alice, Fanuel, Mathieu, Le Lamer, Anne-Cécile, Boustie, Joël, Rogniaux, Hélène, Charrier, Maryvonne, Lohézic-Le Dévéhat, Françoise   +6 more
openaire   +5 more sources

Contrasting timing of parturition of chital Axis axis and gaur Bos gaurus in tropical South India - the role of body mass and seasonal forage quality [PDF]

Seasonal variation in forage availability and quality is understood to affect the annual timing of parturition in large herbivores. In India-where seasonal monsoonal rains define variation in forage availability and quality-chital Axis axis exhibit ...
Ahrestani, F.S., Heitkonig, I.M.A., Langevelde, F., van, Prins, H.H.T.   +3 more
core   +2 more sources

Potassium Fertilization Alters the Morphogenetic, Structural, and Productive Characteristics of Panicum maximum Cultivars

Grasses
The objective was to evaluate the effects of potassium fertilization on the morphogenetic, structural, and productive characteristics of Panicum maximum (cvs. Tanzania, Quênia, Mombaça, Zuri, Massai, and Tamani).
Emmanuel Lievio de Lima Véras, Gelson dos Santos Difante, Alexandre Romeiro de Araújo, Denise Baptaglin Montagner, Gabriela Oliveira de Aquino Monteiro, Carolina Marques Costa Araújo, Antonio Leandro Chaves Gurgel, Manuel Cláudio Motta Macedo, Jéssica Gomes Rodrigues, Juliana Caroline Santos Santana   +9 more
doaj   +1 more source

Apparent selectivity of sheep in deferred marandu palisadegrass pastures with variable initial heights [PDF]

Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2019
The objective of this study was to evaluate the apparent selectivity of sheep in marandu palisadegrass (Urochloa brizantha cv. Marandu) pastures with four heights at the beginning of the deferment period (15, 25, 35 and 45cm). The deferment period was 92
M.E.R. Santos, L.E.F. Afonso, B.H.R. Carvalho, A.C. Rêgo, G.J.S. Queiroz, J.A.S. Medica, L.S. Moraes, L.L.S. Carmo   +7 more
doaj   +1 more source

Dynamic laboratory measurement with dielectric sensor for forage mass flow determination [PDF]

Research in Agricultural Engineering, 2007
A new parallel plate capacitance sensor was built consisting of two metal sheets. The sensor - a capacitor and the whole oscillating circuit was driven at 27 MHz frequency. Dynamic laboratory experiments were performed with grass from a natural meadow in order to evaluate the possibility of the forage mass flow determination by means of this sensor ...
F. Kumhála, Z. Kvíz, J. Kmoch, V. Prošek   +3 more
openaire   +2 more sources

Sward structure and ingestive behavior of cows in tropical pastures managed under different forage allowances [PDF]

Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2019
This study evaluated how changing the structure of Brachiaria brizantha cv. Marandu pasture under different forage allowances (FA) of 4, 7, 10 and 13kg DM/100kg BW (body weight) affected animal behavior over a two-year evaluation period.
E.R. Janusckiewicz, D.R. Casagrande, E. Raposo, C. Bremm, R.A. Reis, A.C. Ruggieri   +5 more
doaj   +1 more source

Patchy zooplankton grazing and high energy conversion efficiency: Ecological implications of sandeel behavior and strategy [PDF]

, 2013
Sandeel display strong site-fidelity, and spend most of their life buried in the seabed. This strategy carries important ecological implications. Sandeels save energy when they are not foraging but in return are unable to move substantially and therefore
Mikael van Deurs, Asbjørn Christensen, Anna Rindorf
core   +1 more source