Results 231 to 240 of about 16,632 (245)

Trade‐offs in thermal response: Schizotetranychus brevisetosus winter eggs outperform summer eggs at low temperatures

open access: yesPhysiological Entomology, EarlyView.
We investigated maternal effects in Schizotetranychus brevisetosus (Tetranychidae), where females oviposit summer and winter eggs in response to photoperiod on evergreen hosts. Developmental rates of immature individuals increased linearly from 15°C to 35°C, but winter and summer eggs developed faster at low and high temperatures, respectively ...
Miki Yamawaki, Katsura Ito
wiley   +1 more source

Effect of blood meals and mating on biodemographic characteristics of Aedes albopictus

open access: yesPhysiological Entomology, EarlyView.
Lifespan did not differ between virgin and mated males and females. The number of blood meals (one and two) significantly reduced adult lifespan compared with those with no blood meal. The effect of the second blood meal doubled females' egg production and their reproductive output.
Georgios D. Mastronikolos   +1 more
wiley   +1 more source

Safety of a feed additive consisting of chromium propionate (KemTRACE<sup>™</sup> Chromium) for all growing poultry species (KEMIN EUROPA N.V.). [PDF]

open access: yesEFSA J
EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP)   +22 more
europepmc   +1 more source

Safety and efficacy of B‐Act® (Bacillus licheniformis DSM 28710) for chickens for fattening and chickens reared for laying [PDF]

open access: yesEFSA Journal, 2016
Abstract The additive B‐Act® is a preparation containing viable spores of a strain of Bacillus licheniformis. The additive is intended for use in feed for chickens for fattening and chickens reared for laying at the proposed dose of 1.6 × 109 colony‐forming unit (CFU)/kg complete feedingstuffs. B.
Vasileios Bampidis   +2 more
exaly   +4 more sources

Effects of chronic and repeated corticosterone administration in rearing chickens on physiology, the onset of lay and egg production of hens

Physiology & Behavior, 2009
A corticosterone model was used to study the effects of chronic and repeated stress during the rearing phase on physiology, the onset of lay and performance of laying hens in the subsequent laying period. Two hundred and seventy Hy-line brown layer pullets were reared in environmentally controlled battery cages. At 7, 11, and 15 weeks of age birds were
Shini, S., Shini, A., Huff, G. R.
openaire   +4 more sources

Scientific Opinion on the safety and efficacy of Bonvital (Enterococcus faecium) for chickens reared for laying and minor avian species [PDF]

open access: yesEFSA Journal, 2013
Bonvital is a preparation of a strain of Enterococcus faecium authorised for use in piglets and pigs for fattening, in sows and in chickens for fattening. The applicant is seeking the further authorisation of Bonvital for use in chickens reared for laying and minor avian species. The E.
exaly   +3 more sources

Home - About - Disclaimer - Privacy