This study evaluated the effect of a prostaglandin F2? (PGF) analogue as an ovulatory stimulus in dairy cows and buffaloes raised Amazon biome. To this end, three experiments were performed state Rondônia, located In Experiment 1, 22 lactating received 2 mg intramuscular (I.M.) estradiol benzoate (EB) on day 0 intravaginal progesterone-releasing device (CIDR) from to 9 protocol. On days 8 9, al...

In sheep industry, pregnancy rate after artificial insemination (AI) declines due to the complex anatomy of the cervix in ewes, such that it might prevent effective intrauterine insemination. At estrus, cervical relaxation occurs to some degree in ewes, which is regulated by the changes in the levels of reproductive hormones. This study aimed to evaluate the effects of estradiol and intravenous...

reproductive performance was evaluated in non-lactating crossbred ewes to which were administered the exogenous gnrh and pmsg. the ewes were randomly allocated in three treatment groups (n=40).after accurate detection of estrus and 2 hours prior to mating, 2.5 ml of distilled water and 2.5 ml of gnrh were injected intramuscular to each ewe of the first (control) and second group, respectively. ...

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The 4.3BSD Reno release introduced the reduced radix tree for routing table to support variable length addresses and best-match based lookups instead of the hash-based scheme of the 4.3BSD Tahoe release. The lookup and maintenance algorithm of Radix is, however, complicated due to support of non-continuous subnet-mask and it is not easy to understand the source code. In order to support classle...

In a recent study from our laboratory, a combination of melatonin implants and controlled internal drug release devices increased the number of developing follicles in follicle stimulating hormone-treated anestrous ewes; however, CIDR treatment decreased the rate of in vitro fertilization (IVF). In the current study, effects of alternative CIDR treatments on follicular development and rate of I...

This study was conducted to measure the effect of the level of daily milk yield on the excretion rate of progesterone (P4) in milk and faeces in high-producing (HP) and low-producing (LP) lactating dairy cows. A GnRH-agonist was implanted to block endogenous production of P4. A CIDR device was inserted into the vagina and left in place for 11 days. The average and peak milk yields were greater ...

Lactating beef cows previously synchronized for estrus (d 0) were assigned to four treatments to assess their effectiveness in increasing blood progesterone (P4) and its effects on tumor necrosis factor-α (TNF-α) and prostaglandin F2α (PGF2α) after the transfer of embryos. At the time of transfer (d 7), cows received no treatment (control; n = 16), a controlled internal drug releasing device (C...

There is a disturbing paradox at the heart of contemporary American education: As this education turns more ‘electronic,’ we are moving away from the one kind of learning that we know to be most effective, namely, one-on-one instruction. As the need for good teachers at the university level continues to grow, we see this paradox intensifying. A specific exacerbating force is that, as the data t...