نتایج جستجو برای: stocking density

تعداد نتایج: 412527  

2017
Chenxi Tan Dachuan Sun Hongxin Tan Wenchang Liu Guozhi Luo Xiaoling Wei

We conducted a 71-day experiment to investigate the effects of stocking density in a recirculating aquaculture system (RAS) on the growth performance, body composition, digestive activity, and blood biochemical parameters of the marbled eel Anguilla marmorata. We stocked marbled eel in 1.0 m tanks at stocking densities of 12, 20, and 28 kg/m, which were designated the low-density (LD), medium-d...

2005
P. J. Baker P. G. Scowcroft

BAKER, P. J. & SCOWCROFT, P. G. 2005. Stocking guidelines for the endemic Hawaiian hardwood, Acacia koa. Stocking relationships are an important tool for foresters because they provide a means for evaluating how effectively the trees in a stand use available growing space. While stocking guidelines are not available for many tropical tree species, readily obtained measurements of stem and crown...

1998
C. A. TAYLOR

InfiltraGon rde and sediment production were measured for 2 years on 3 pastures from an intensive rotational grazing system. The pastures were 32,24, and 16 ha in size. Stocking rate was held constant but stocking density at any given point in time varied due to pasture size. Stocking densities were 0.68,0.51, and 0.32 ha/AU, respectively. Within the respective treatments, midgrass interspa ces...

ژورنال: توسعه آبزی پروری 2021
Alimohammadi, Aliakbar, Ghorbani, Khalil, Ghorbani, Rasoul, Miandare, Khadije,

Regarding climate change, it is important to determine the most suitable time for starting its cultivation on the site of Gomishan shrimp. For this purpose, in range of air temperature (15-25°C), 21°C was chosen as the base temperature for Gomishan area. This experiment was conducted in 8 terrestrial ponds that were different of density (350000, 182000, 100000 ind/he and time of stocking; 18 Ju...

2000
JAMES F. SELGRADE JAMES H. ROBERDS Geoffrey James Butler

This study considers a general class of twodimensional, discrete population models where each per capita transition function (fitness) depends on a linear combination of the densities of the interacting populations. The fitness functions are either monotone decreasing functions (pioneer fitnesses) or one-humped functions (climax fitnesses). Conditions are derived which guarantee that an equilib...

A. Panyasak, S. Khumput S. Muangchum S. Yodprom

Both stocking rate and housing systems are main factors influencing the occurrence of feather pecking in laying hens raised in conventional cage system. This study examines the effects of different type of cage and stock density on feather pecking behaviour in hens. Total of 216 Hisex Brown hens at 16 weeks of age were randomly selected and put into 2 types of battery cages: conventional cages ...

2014
K. S. Mohamed

The present study has revealed that, the temperature has a crucial role among the observed physiochemical parameters on the growth and survival of P. margaritifera spat. Instantaneous growth rates (IGRs) in DVM, APM and TWT were calculated and used to assess the variation in growth of spat reared with different feed mixtures (FM-1 8) of five diatoms and stocking densities (SD-10, 20 and 30). Am...

2005
M. PETRACCI M. BIANCHI

A field study was conducted to evaluate the influence of some pre-slaughter factors as journey time, stocking density, and lairage time on mortality, live weight loss and carcass defects on 321 flocks of broiler chickens slaughtered at a commercial processing plant. For each flock, the following traits were evaluated: birds dead-on-arrival (DOA); live weight loss; condemned carcasses; downgrade...

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