in this study, the effects of culban seed (vicia peregrine l.) on live body weight, feed intake, feed efficiency, egg production, egg quality characteristics, egg yolk fatty acid profiles and yolk cholesterol content in laying hens were investigated. the experiment consists of seven treatment groups with ten replications containing one laying hen in each and for 32 weeks old seventy laying hen ...

Background and Aim: Tooth discoloration induced by endodontic materials is a common finding which can impair the aesthetic outcome. The aim of this study was to compare the coronal discoloration induced by Well-Root ST and AH26 root canal sealers by using the Easyshade® colorimeter. Materials and Methods: Forty-five intact maxillary central incisors were involved in this experimental study. Th...

A soil amoeba, Hartmannella glebae, could grow on a variety of gram-positive and gram-negative bacteria, although the rate of growth was faster in the presence of gram-negative bacteria. The amoeba, however, could not use yeasts, molds, or a green alga as a nutritional source. The extract prepared from amoebae grown in the presence of Aerobacter aerogenes and Alcaligenes faecalis could lyse int...

The timing of DNA synthesis and mitosis in normal eggs, in activated eggs, and in eggs containing several accessory nuclei has been studied in Xenopus. DNA synthesis was followed by injecting PHjthymidine into the egg and detecting its subsequent incorporation into DNA by autoradiography. It was found that the accessory nuclei which were introduced into the egg during different phases of the ce...

Monitoring the vital signs of a developing embryo is very useful in avian breeding programs, especially during early days of incubation, so that dead or unfertilized eggs can be timely removed from incubator and new eggs can be placed in. A noninvasive system for detecting the vital signs of avian embryo through intact egg in early stage of incubation has been developed using laser speckle imag...

BACKGROUND Xenopus egg extracts initiate replication specifically at the Chinese Hamster Ovary (CHO) cell dihydrofolate reductase (DHFR) origin with CHO G1-phase nuclei as a substrate, providing that these nuclei have intact nuclear envelopes and are isolated from cells that have passed through a distinct transition (origin decision point; ODP) early in G1-phase. With intact pre-ODP nuclei, or ...

The objective of the study reported here was to evaluate the effects of Levamisole and dexamethasone on antibody titer in chicks against Newcastle vaccine.120 Fertile eggs at 18 days of incubation were divided into four equal group, 30 embryonated egg for each. The first group A inoculated with Levamisole that dose 0.1 mL/egg contain 1.25 mg active ingredient and live attenuated Newcastle vacci...

Glutathione(GSH) is an antioxidant that being studied for its ability to improvecellular responses semen preservation challenges. The research goal aimed toevaluate the impact of introducing different glutathioneconcentrations boar freezing extender (0, 1, 5, and 10 mM) onthe Kolbroek sperm's quality after frozen thawed. For 2 h, thecollected sperm-rich fraction was chilled at 17°C. Following 1...

An electrophysiological method for studying the receptivity to spermatozoa of sea urchin eggs and oocytes is described. Pairs of adjacent oocytes and eggs, with intact jelly layers, were impaled and simultaneously exposed to a known concentration of spermatozoa. Two parameters were studied. The time from insemination to the first successful collision (as indicated by a step depolarization acros...

A typical mammalian egg is surrounded by an outer layer of about 3,000 cumulus cells embedded in an extracellular matrix rich in hyaluronic acid. A current, widely proposed model is that the fertilizing sperm, while it is acrosome intact, passes through the cumulus cell layer and binds to the egg zona pellucida. This current model lacks a well-supported explanation for how sperm penetrate the c...