photoperiod


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photoperiod

 [fo´to-pēr″e-od]
the period of time per day that an organism is exposed to daylight (or to artificial light). adj., adj photoperiod´ic.

photoperiod

/pho·to·pe·ri·od/ (fo´to-pēr″e-od) the period of time per day that an organism is exposed to daylight (or to artificial light).photoperiod´ic

photoperiod

(fō′tō-pîr′ē-əd)
n.
The daily duration of light and dark to which an organism is exposed, considered especially with regard to its effect on growth and development.

pho′to·pe′ri·od′ic (-ŏd′ĭk) adj.

photoperiod

the length of daylight as compared with the length of darkness in each 24 hour cycle. see PHOTOPERIODISM.

photoperiod

the period of time per day that an organism is exposed to daylight (or to artificial light).
References in periodicals archive ?
Moreover, it was found that ewes in the LN photoperiod were characterised by higher (p<0.
For example, Gerard & Ruf (1997) observed that temperature influenced the biology of Anthrenocerus australis Hope (Coleoptera: Dermestidae), but other abiotic factors such as relative humidity and photoperiod affect the life cycle to a similar extent.
The finding of a suitable photoperiod for a particular species, can reduce social stress and increases: food intake, nutrient assimilation and specific growth rate (Fielder et al.
All of the results suggested that short photoperiod can reduce body mass, body fat mass, increased food intake.
Air temperature and photoperiod are meteorological elements that interfere with the development of grasses (Castro et al.
The experimental period started when the birds completed 21 weeks old, and at the beginning of the pilot phase (02/10) the natural photoperiod contained 13:13h, passing through the winter solstice in the southern region of the country (06/23) with 10:03h, and at the end of the experiment (07/27) the natural photoperiod was of 10:28h (Cotta, 2002).
Influence of photoperiod and water availability on reproduction of male California voles (Microtus californicus).
Chickens subjected to a short/non-intermittent photoperiod had the lowest body weight, body weight gain, feed intake, carcass weight, and fillet and tender weights when compared with those reared under long/continuous and regular/intermittent photoperiods.
The SD photoperiod treatments reduced the yield components and yield, but not affected significantly the yield components and yield under SD-12 h treatment compared with SD-8 h treatment.
Many studies have been conducted to see the influence of photoperiod on the reproductive functions of male birds in view of their economic interest.
In this report, the combined effects of temperature and photoperiod on broodstock conditioning of O.