Results 51 to 60 of about 73,850 (170)

Growth, Condition, and Trophic Relations of Stocked Trout in Southern Appalachian Mountain Streams [PDF]

, 2019
Stream trout fisheries are among the most popular and valuable in the United States, but many are dependent on hatcheries to sustain fishing and harvest.
Besler, Douglas A., Cope, W. Gregory, Fischer, Jesse R., Flowers, H. Jared, Kwak, Thomas J., Rash, Jacob M.   +5 more
core   +1 more source

Estrutura do capim-braquiária em relação à planta daninha = Structure of signalgrass in relation to weeds

Acta Scientiarum: Animal Sciences, 2011
O objetivo foi avaliar as características estruturais da Brachiaria decumbens cv. Basilisk em relação à planta daninha Solanum sisymbrifolium no pasto. Os tratamentos foram dois locais no mesmo pasto, quais sejam, próximo e distante da planta daninha.
Manoel Eduardo Rozalino Santos, Dilermando Miranda da Fonseca, Virgilio Mesquita Gomes, Roberson Machado Pimentel, Guilherme Portes Silva, Ronan Lopes Albino   +5 more
doaj  

Harvesting Control for a Stage-Structured Predator-Prey Model with Ivlev's Functional Response and Impulsive Stocking on Prey

Discrete Dynamics in Nature and Society, 2007
We investigate a delayed stage-structured Ivlev's functional response predator-prey model with impulsive stocking on prey and continuous harvesting on predator. Sufficient conditions of the global attractivity of predator-extinction periodic solution and
Kaiyuan Liu, Lansun Chen
doaj   +1 more source

Biochemical changes in Salminus brasiliensis due to successive captures and stocking densities - doi: 10.4025/actascibiolsci.v35i1.13055

Acta Scientiarum: Biological Sciences, 2012
This study evaluated the biochemical changes associated to successive captures of Salminus brasiliensis reared at different stocking densities. The experiment was conducted in tanks with a capacity of 1,000 L, connected to a recirculating system with ...
Neiva Braun, Ronaldo Lima de Lima, Bernardo Baldisserotto, Alcir Luiz Dafre, Alex Pires de Oliveira Nuñer   +4 more
doaj   +1 more source

Production and morphological characteristics of Tanzania grass under different grazing heights

Semina: Ciências Agrárias, 2014
The objective of this study was to determine the best height of the Tanzania grass under grazing, assessing morphological and productive characteristics of the sward.
Rondineli Pavezzi Barbero , Marco Aurélio Alves de Freitas Barbosa , Letícia Maria de Castro , Edson Luis de Azambuja Ribeiro , Ivone Yurika Mizubuti, Valter Harry Bumbieris Júnior , Leandro das Dores Ferreira da Silva   +6 more
doaj   +1 more source

The Economics of Rotational Grazing in the Gulf Coast Region: Costs, Returns, and Labor Considerations, Phase II [PDF]

Profitability and labor associated with rotational grazing at three stocking rates and continuous grazing at a medium stocking rate are compared. On a per-acre basis, profits are lowest for low stocking rate rotational grazing.
Blouin, David, Boucher, Robert W., Gillespie, Jeffrey M., Nipper, Weldon, Qushim, Berdikul, Venuto, Brad, Wyatt, Wayne   +6 more
core   +1 more source

Direct seeding mulch-based cropping systems for rice-beef production in the plain of Jars, Xieng Khouang Province, Lao PDR : an example of the creation - validation research and development methodological approach [PDF]

, 2010
The Plain of Jars is an acid, infertile savannah grassland covering an area of about 60,000 ha in the western region of Xieng Khouang Province, northeastern Lao PDR.
Bounkhampone, Bouapha, Lienhard, Pascal, Phanthanivong, Ienlang, Sayphoummie, Sengpanh, Sosomphou, Thammakham, Séguy, Lucien, Tivet, Florent   +6 more
core  

Animal production and canopy attributes of Cynodon pasture managed under continuous stocking with wethers at three levels of forage allowance

Revista Brasileira de Zootecnia, 2012
The objective of the present experiment was to evaluate the effect of forage allowance (3, 6 or 9 kg of green leaves dry matter (DM)/100 kg of body weight (BW)) on both animal performance and attributes of Cynodon dactylon var.dactylon canopy managed ...
Márcia Vendrúsculo dos Santos, Gilberto Vilmar Kozloski, Fernando Luiz Ferreira de Quadros, Cleber Cassol Pires, Tatiana Pfüller Wommer, Camila Ornelas Mônego   +5 more
doaj   +1 more source

Desempenho animal e características de pastos de capim-piatã submetidos a diferentes intensidades de pastejo Animal performance and sward characteristics of piatã palisade grass pastures subjected to different grazing intensities

Pesquisa Agropecuária Brasileira, 2013
O objetivo deste trabalho foi avaliar o valor nutritivo, a estrutura do dossel e a produção animal de novilhos em pastos de capim-piatã (Urochloa brizantha, cultivar Piatã), manejados a 15, 30 e 45 cm de altura, sob lotação contínua.
Nayana Nazareth Nantes, Valéria Pacheco Batista Euclides, Denise Baptaglin Montagner, Beatriz Lempp, Rodrigo Amorim Barbosa, Phillippe Oliveira de Gois   +5 more
doaj  

Sward structure and nutritive value of Alexandergrass fertilized with nitrogen

Anais da Academia Brasileira de Ciências, 2016
This experiment evaluated forage production, sward structure, stocking rate, weight gain per area and nutritive value of forage as grazed by beef heifers on Alexandergrass (Urochloa plantaginea (Link) Hitch) pasture fertilized with nitrogen (N): 0; 100 ...
Paulo R. Salvador, Luciana Pötter, Marta G. Rocha, Anelise P. Hundertmarck, Maria José O. Sichonany, Luiz G. Amaral Neto, Mateus Negrini, Paulo H. Moterle   +7 more
doaj   +1 more source