Economische beoordeling slachtkuikenproeven

Via een eenvoudig rekenschema kunnen slachtkuikenproeven, waarvan de belangrijkste zoötechnische resultaten bekend zijn, economisch beoordeeld worden

Perspectief voor tarwe bijvoeren aan leghennen

Gezien de zeer grote interesse in de praktijk voor het bijvoeren van tarwe aan vleeskuikens komt de vraag op of dit ook voor leghennen perspectief biedt

T Pyxidis: The First Cataclysmic Variable with a Collimated Jet

We present the first observational evidence for a collimated jet in a cataclysmic variable system; the recurrent nova T Pyxidis. Optical spectra show bipolar components of H$\alpha$ with velocities $\sim 1400 km/s$, very similar to those observed in the supersoft X-ray sources and in SS 433. We argue that a key ingredient of the formation of jets in the supersoft X-ray sources and T Pyx (in addition to an accretion disk threaded by a vertical magnetic field), is the presence of nuclear burning on the surface of the white dwarf.Comment: 10 pages 2 figures to appear in ApJ Letter

Economisch perspectief voor Veranda op grotere bedrijven

Door het bedrijfsleven en onderzoeksinstellingen wordt gezocht naar nieuwe houderijsystemen met een duidelijk lagere ammoniakemissie. Door de firma Vencomatic is hiertoe het Veranda systeem ontwikkel

Tarwe bijvoeren aan vleeskuikens financieel aantrekkelijk!

Op basis van de technische resultaten van de proeven waarin tarwe is bijgevoerd aan vleeskuikens (zie pag. 21-26) is een economische evaluatie uitgevoerd. Hieruit blijkt dat bij de huidige prijsverhoudingen van de verschillende voeders het bijvoeren van tarwe financieel aantrekkelijk is

Two New Species and Temporal Changes in the Prevalence of Eimerians in a Free-Living Population of Townsend\u27s Ground Squirrels (\u3ci\u3eSpermophilus townsendii\u3c/i\u3e) in Idaho

More than 1,180 fecal samples were collected from 253 juvenile and 384 adult Townsend\u27s ground squirrels (Spermophilus townsendii) at the Snae Snake River Birds of Prey Area near Boise, Idaho, from February to June 1992. Oocysts of 7 eimerians were observed. Five are new host records (Eimeria beecheyi, Eimeria bilamellata, Eimeria callospermophili, Eimeria lateralis, and Eimeria morainensis), 2 species are described here as new, and new structural information on E. morainensis is added. Sporulated oocysts of Eimeria adaensis n. sp. are ovoidal, 19.6 x 22.7 (16-22 x 18-26) μm with sporocysts ellipsoidal 7.2 x 11.9 (6-10 x 9-15) μm. No micropyle or oocyst residuum, but polar bodies, Stieda bodies, and sporocyst residua are present. Sporulated oocysts of Eimeria pseudospermophili n. sp. are ovoidal, 24.7 x 28.5 (21-27 x 25-32) μm with sporocysts ellipsoidal 8.8 x 14.2 (8-10 x 12-17) μm. Micropyle and oocyst residuum are absent, but polar bodies and Stieda bodies are present. Sporulated oocysts of E. morainensis are more variable in size and shape than originally described and contain 2 distinctly different residua not previously described. Temporal changes in the prevalence of eimerians of all 7 species combined in adult squirrels showed significant decline (r2 = 0.79, P \u3c 0.001). We hypothesize that this decline was due to drought during the period of squirrel activity. No significant temporal change in the prevalence of eimerians in juvenile squirrels was observed. The prevalence of E. callospermophili, E. adaensis, and all eimerians combined in adults was significantly greater than in juveniles. There was no significant difference in eimerian prevalence between male and female squirrels (P \u3c 0.05)

A National Survey of Parent Support Legislation and Regulations

Introduction: Parent education has a positive impact on children, parents, families, and the community. CHILDREN AT RISK and Bracewell & Giuliani LLP conducted a policy scan of state statutes regarding parent education. Methodology: To identify state statutes that address parent education, we conducted a search of statutes in all 50 states using keywords and the online legal research systems. After all state-level policies were ascertained, we selected the most relevant statutes to parent education and identified major themes. Results: The policy scan identified statutes regarding non-mandated parent education in 40 out of the 50 states. Common themes include: home visitation programs, funding through a Children’s Trust Fund, early childhood initiatives, use of evidence-based programs, and a community-based component to the parent education statute. Discussion: In a needs assessment of parent education in Houston, Texas, stigma and funding were identified as the biggest barriers to increasing the availability of parent education. Funding was addressed in a few state policies, but stigma was not addressed. While parent support programs have many demonstrated positive effects, the effect of the various mandated parent support strategies remains unproven. Conclusion: While most states have statutes regarding parent education, more evaluation and research is needed on how these policies are implemented and their measured impact on families in the state

A Quantitative Look at Incarcerated Parents and their Parenting Responsibilities in an Urban County Jail

An emerging body of research has shown that parental incarceration can negatively impact the emotional, social, and developmental health of children. However, most of the research has been conducted within prison populations. To better understand the scope and potential impact of parental incarceration in a large urban county jail, we surveyed 1,404 inmates in a county jail on their children, parenting responsibilities, and history of incarceration. Nearly half of respondents stated they were parents of at least one child under the age of 18. Over 90% of the incarcerated parents had been to jail or prison previously, 61% reported being the primary financial support for their child(ren), and 62% lived with their children prior to incarceration. Incarcerated mothers were more likely to be have lived with their children and been the primary financial support for their children prior to incarceration compared to incarcerated fathers. Public health officials should recognize the downstream effects of parental incarceration in local jails and ensure appropriate resources, programs, and policies are in place to meet the needs of impacted children

A Radial Velocity Study of CTCV J1300-3052

We present time-resolved spectroscopy of the eclipsing, short period cataclysmic variable CTCV J1300-3052. Using absorption features from the secondary star, we determine the radial velocity semi-amplitude of the secondary star to be K2 = 378 \pm 6 km/s, and its projected rotational velocity to be v sin i = 125 \pm 7 km/s. Using these parameters and Monte Carlo techniques, we obtain masses of M1 = 0.79 \pm 0.05 MSun for the white dwarf primary and M2 = 0.198 \pm 0.029 MSun for the M-type secondary star. These parameters are found to be in excellent agreement with previous mass determinations found via photometric fitting techniques, supporting the accuracy and validity of photometric mass determinations in short period CVs.Comment: Accepted for publication in MNRAS (24th January 2012). 10 pages, 9 figures (black and white