The effect of ethanol feeding on ovarian function and structure in female rats was studied in alcohol-fed animals, isocalorically fed controls, and two ad libitum-fed control groups. Ovarian weight was reduced by 60% in alcohol-fed animals compared with the control groups. Gross disruption of ovarian architecture was noted, characterized by the absence of any corpus hemorrhagicum and corpus alb...

Objective Royal jelly (RJ) is a complementary diet widely used by traditional healers for the treatment of infertility. The aim of present study was to evaluate the effect of RJ on some reproductive parameters in immature female rats. MaterialsAndMethods In this experimental study, thirty two immature female rats (30-35gr) were divided into four groups (n=8 /group). Control group received 0.5 m...

Communal animals often engage in group activities that require temporal synchrony among its members, including synchrony on the circadian timescale. The principles and conditions that foster such collective synchronization are not understood, but existing literature hints that the number of interacting individuals may be a critical factor. We tested this by recording individual circadian body t...

adjusted milk yield for 305 days and two milking times along with actual first lactation records of 187138 holstein cows were used to find out the effect of record adjustment on variance components estimation and on genetic evaluation. records had been gathered by the animal breeding center of iran during years 1991 to 2006. the pedigree file included 288032 animals. a single animal model with ...

Experiments are reported on the induction of mammary carcinoma in intact, mammary tumor agent (MTA)-free female ( 9 020 x a" DBAf)Fi mice by single and multiple (4) prolactinproducing hypophyseal isografts in the kidney. Tumor incidences varying between 67 and 88 % were recorded in the treated groups as against 2% in virgin controls. Identical treatment of intact and castrated males proved tota...

CHAPTER 23: GENERATION OF ANIMALS * Devin Henry The place of GA in Aristotle’s philosophy The best way to understand the place of Generation of Animals in Aristotle’s philosophy is to consider the way Aristotle himself envisions the proper organisation of the study of living things. According to Parts of Animals I.1, biology starts by collecting the phenomena concerning each kind and then goes ...

A bioassay for possible carcinogenicity of technical-grade allyl chloride (3-chloropropene) was conducted using Osborne-Mendel rats and B6C3F1 mice. At initiation of the study the rats were approximately 6 weeks old and the mice approximately 5 weeks old. Allyl chloride in corn oil was administered by gavage to two groups of each species for 5 days a week for 78 weeks, followed by observation p...

In Drosophila, females require products of the gene Sxl for sex determination, dosage compensation and fertility. I show here that the X-chromosomal gene liz, located in 4F1 to 4F11 and previously called fs(1)1621, provides maternal and zygotic functions necessary for Sxl activity in germ line and soma. In XX animals, the mutation SxlM1 which was reported to express the female-specific function...

BACKGROUND The enzyme 5-lipoxygenase (5LO) has been implicated in a variety of neurological and psychiatric disorders including anxiety. Knockout of 5LO has previously been shown to alter anxiety-like behavior in mice at a young age but the effect of 5LO knockout on older animals has not been characterized. METHODOLOGY/PRINCIPAL FINDINGS Here we used the elevated plus maze behavioral paradigm...

Spiculopteragia asymmetrica is a gastrointestinal nematode frequently found in the abomasum of cervids. During December and February 2010, two red deer were died in Semeskandeh sanctuary in Mazandaran province. Moreover, five live deer from mentioned area were treated by Ivermectin and collected feces of these animals were used for assessment helminthes infection by parasitological methods. Sev...