Proizvodne performanse brojlerskih roditelja u toku produkcije jaja za nasad

When growing broiler breeder important to achieve the highest possible production of eggs, with minimal mortality hens and roosters, and that the smaller daily feed consumption per head, or produced breeding egg. To determine production characteristics of broilers Cobb 500 parents conducted research on the flock through the 38 weeks of production. During the study are accompanied by the following production parameters: the mortality of parents and the intensity of load hatching eggs, it is also the goal of this work. Based on the results obtained during the research, in terms of production traits, it can be concluded that investigated the parent flock of heavy hybrid Cobb 500 proved satisfactory genetic potential in relation to the regulations Breeders Cobb 500.Prilikom gajenja brojlerskih roditelja bitno da se ostvari što veća proizvodnja jaja, uz minimalna uginuća nosilja i pijetlova, kao i da je što manja dnevna potrošnja hrane po grlu, odnosno proizvedenom priplodnom jajetu. Za utvrđivanje proizvodnih osobina brojlerskih roditelja hibrida Cobb 500 sprovedena su istraživanja na matičnom jatu kroz 38 nedjelja proizvodnje. Tokom istraživanja praćeni su sljedeći proizvodni parametri: mortalitet roditelja i intenzitet nosivosti priplodnih jaja. Na osnovu dobijenih rezultata tokom istraživanja, u pogledu proizvodnih osobina, može se zaključiti da je ispitivano matično jato teškog hibrida Cobb 500 pokazalo zadovoljavajući genetski potencijal u odnosu na propise selekcionera hibrida Cobb 500

Development and application of home cage monitoring in laboratory mice and rats: a systematic review

We are conducting a systematic review on home cage monitoring in laboratory mice and rats. A major advantage of home cage monitoring is that the animals can be examined in their home environment, which reduces stress and allows to monitor the animals 24/7. Moreover, this approach minimizes the influence of the human presence on the animals’ behavior. Therefore, home cage-based monitoring is interesting for phenotyping in mice and rats since it may reduce data variability and improve reproducibility. In addition, it can provide a useful tool for welfare assessment. The requirements for home cage monitoring changed over the last decades driven by technology and digitalization. The goal of this systematic review is to identify these historical changes and describe the current state of the art. After phase 1 (title/Abstract screening), it was decided to perform phase 2 (full text screening) and phase 3 (data extraction) simultaneously. Therefore, an updated protocol was uploaded