Choice Between Fluorescent and Poultry-Specific LED Lights by Pullets and Laying Hens
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منابع مشابه
Choice between LED and Fluorescent Lights by Pullets and Laying Hens
Light plays a key role in the development, production performance, health, and well-being of poultry. Yet there are no standards regarding light type, spectrum, intensity and diurnal photoperiod for poultry production. Thus, it is of socio-economic as well as scientific values to assess light needs of pullets and laying hens, especially considering the emergence of LED lights intended for poult...
متن کاملAmmonia Emissions of Pullets and Laying Hens as Affected by Stocking Density and Manure Accumulation Time
Data on ammonia (NH3) emissions from pullets (hens <18 weeks of>age) are non-existent despite the large differences in nutritional and environmental conditions between raising pullets and laying hens. Different stocking densities (SDs) in housing the birds may be used according to certain industry guidelines on production; however, information concerning the impact of SD on properties of accumu...
متن کاملPSA Environment and Management: Pullets, Hens, and Eggs
Previous research toe clipping day old Leghorn pullets reduced bird hysteria with no impact on feed consumption or BW to 16wk (Ruszler, 1974). Egg production was greater and mortality was reduced compared to control birds. Recently, toe trimming turkeys and broilers with a microwave technology has demonstrated reduced carcass tears and downgrading. Therefore, three Leghorn strains at 1d of age ...
متن کاملRegulation of steroid production in ovarian stromal tissue from 5- to 8-week-old pullets and laying hens.
Studies were conducted to evaluate the regulation of steroid production in dispersed cells from ovarian stromal tissue from 5- to 8-week-old-pullets (IM cells) and laying hens (MAT cells). Short-term incubation of IM and MAT cells with ovine (o) LH resulted in a dose-dependent increase in progesterone, androstenedione and oestradiol production; progesterone production was greater in MAT cells t...
متن کاملOviduct-specific expression of tissue plasminogen activator in laying hens
Egg-laying hens are important candidate bioreactors for pharmaceutical protein production because of the amenability of their eggs for protein expression. In this study, we constructed an oviduct-specific vector containing tissue plasminogen activator (tPA) protein and green fluorescent protein (pL-2.8OVtPAGFP) and assessed its expression in vitro and in vivo. Oviduct epithelial and 3T3 cells w...
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ژورنال
عنوان ژورنال: Transactions of the ASABE
سال: 2017
ISSN: 2151-0040
DOI: 10.13031/trans.12402