Aspergillus fumigatus is a medically important opportunistic pathogen and a major cause of respiratory allergy. The species has long been considered an asexual organism. However, genome analysis has revealed the presence of genes associated with sexual reproduction, including a MAT-2 high-mobility group mating-type gene and genes for pheromone production and detection (Galagan et al., personal ...

Two experiments were conducted to evaluate an accelerometer system (Heatime; SCR Engineers Ltd., Netanya, Israel) to manage reproduction in lactating dairy cows. In experiment 1, lactating Holstein cows (n=112) were fitted with an accelerometer system and were treated with GnRH followed 7d later by PGF(2α) to synchronize estrus. A total of 89 cows that had a follicle >10mm in diameter and a fun...

this experiment was conducted to evaluate reproductive indices and provide appropriate solutions to improve the reproductive efficiency of dairy cattle in kermanshah province. with reference to forty-eight dairy industrial herds available at different cities of the province, a questionnaire containing quantitative measures were completed to assessing the reproductive parameters of 5397 dairy co...

The aim of this study was to evaluate the short- and long-term effects initial serum total protein (STP) concentration, average starter feed intake (SI) during last week preweaning period, daily gain (ADG) on growth, fertility, performance Holstein heifers their first lactation. Eighty-four female dairy calves were weaned at d 56 age then continued until end Growth performance, including body w...

The techniques of artificial insemination, although commonly practiced in domestic animal reproduction, have not been readily applied to zoo animals. Previously reported artificial insemination efforts in nondomestic Felidae have utilized surgical techniques and only recently hag a cub resulted [Moore et al, 1981]. Until the present project, the nonsurgical approach hag been unsuccessful in the...

Title of Thesis: THE EFFECTS OF NEONATAL OXYTOCIN ON SEXUAL MATURATION AND THE EXPRESSION OF SOCIOSEXUAL REPRODUCTIVE BEHAVIOR IN FEMALE RATS Thomas F. Withuhn, Master of Science, 2004 Thesis directed By: Professor Bruce S. Cushing Department of Biology While the role of oxytocin (OT) in regulating adult behavior data is thoroughly documented, increasing evidence suggests that neonatal exposure...

Objective(s): Baicalein (BC), a phytoestrogen of the flavonoid family shows beneficiary and adverse effects. Effect of BC on reproduction is still not understood. Reproductive toxic effects on female mice were tested in this study.Materials and Methods: Inseminated Wistar mice were divided into four groups and administered IP with 30, 60, and 90 mg/Kg body weight of BC on gestation daydays 11, ...

The challenge hypothesis (J. C. Wingfield, R. E. Hegner, B. G. Ball, and A. M. Duffy, 1990, Am. Nat. 136, 829-846) proposes that in birds, reptiles, and fish, "the frequency or intensity of reproductive aggression as an effect of T[estosterone] is strongest in situations of social instability, such as during the formation of dominance relationships, the establishment of territorial boundaries, ...

Two trials were conducted to evaluate effects of Synovex C implants on replacement heifers, given at two different ages. Crossbred heifer calves (n = 370) were allotted to four treatments: 1) nonimplanted controls, 2) implanted at 2 mo, 3) implanted at 6 mo, and 4) implanted at both 2 and 6 mo of age. Heifers implanted at 2 mo gained 7 kg more (P = .01) by 6 mo than those not implanted at 2 mo....

Little is known about physiological mechanisms that underlie the cost of reproduction. We tested the hypothesis that stress susceptibility is a cost of reproduction. In one test of our hypothesis, Drosophila melanogaster females were exposed to a juvenile hormone analog (methoprene) to stimulate egg production followed by stress assays. A sterile stock of D. melanogaster was employed as a contr...