The current research was carried out to investigate the effect of diets enriched with different levels organic iron on performance, egg quality, blood haematological parameters, and serum biochemical constituents in laying quails. In study, 120 female quails at 20 weeks age were allocated 5 treatment groups 6 replicates 4 each. Experimental formed by adding 0, 50, 100, 150, 200 mg/kg (iron-glyc...

in this work, a procedure for preconcentration of cobalt using dispersive liquid–liquid microextraction (dllme) with the reagent 1-nitroso 2-naphtol as complexing reagent was developed. at ph 4, co(ii) was complexed with 1-nitroso 2-naphtol and extracted into the fine droplets formed when mixing chloroform (extraction solvent), ethanol (disperser solvent) and the sample solution. after extracti...

Abstract Climate change can affect biological pest control by altering trophic interactions. Elevated carbon dioxide (CO 2 ) concentrations reduce host plant quality and, in turn, alter herbivore and natural enemy preference performance. Using the Geisenheim VineyardFACE (free-air enrichment) facility, we studied plant- herbivore-mediated bottom-up effects of elevated CO concentration on Europe...

Nanos is a translational regulator required for the survival and maintenance of primordial germ cells during embryogenesis. Three nanos homologs are present in the genome of the sea urchin Strongylocentrotus purpuratus (Sp), and each nanos mRNA accumulates specifically in the small micromere (sMic) lineage. We found that a highly conserved element in the 3' UTR of nanos2 is sufficient for repor...

This study investigated the effect of spirulina ethanolic extract (SEE) on quality ram semen during low-temperature liquid storage and relationship between sperm features. Ejaculates were collected from five Djallonké rams, pooled, extended with Tris-egg yolk (TEY) enriched 0 (control), 20 (SEE20), 40 (SEE40), 80 µg/mL (SEE80) SEE to reach concentration 200×106 spz/mL, stored at 4 °C for 72 h. ...

a eight-week trial was carried out to investigate the effects of various levels and type of organic selenium as compared to inorganic selenium. total of 81 layer hens (lsl) 35 weeks of age were used in a randomized complete blocks with 9 treatments, 3 replications of 3 birds per experimental unit. treatment diets included control 0/3 mg/kg sodium selenite and selenium yeast, (250 mg/kg, 500 mg/...

The effect of organic enrichment of the larval habitat on mosquito oviposition was determined in 2 replicated field experiments. In the first study, Culex stigmatosoma and Culex quinque-fasciatus oviposition (as measured by the number of early instar larvae) reached a maximum peak soon after flooding and then declined to a substantially lower equilibrium level. A group of ponds that later recei...

Egg-laying hormone (ELH), a neuropeptide synthesized by the bag cell neurons, induces egg laying and its correlated behavior in Aplysia californica. In the present study, ELH has been purified to homogeneity and its primary structure has been determined. We find this molecule to have 36 amino acid residues with a M(r) of 4385 and a calculated isoelectric point of 9.7. Direct microsequence analy...