1,721,219 research outputs found
Incubazione Artificiale
No full textNel capitolo vengono sviluppati i seguenti paragrafi:
Cenni storici dell'incubazione artificiale; La struttura dell'Incubatoio; Macchine Incubatrici e macchine di schiusa; Controlli igienico- sanitari delle strutture; Gestione delle uova da cova (Raccolta selezione e igiene in allevamento, Conservazione incubazione e schiusa delle uova, Selezione essaggio vaccinazione dei pulcini e spedizione in allevamento, Trattamenti disinfettanti sulle uova); Parametri microclimatici in fase di incubazione e schiusa; Fasi critiche dello sviluppo embrionale; Fattori influenzanti la fertilità e la schiudibilità( Stoccaggio delle uova, Temperatura, Umidità, Ventilazione e Composizione dell'aria); Speratura e valutazione dell'efficienza dell'incubazione; Risultati dell'incubazione
Comparison of different extenders for holding pheasant semen
No full textFor the last decades several studies for holding sperm have been done in various fowl species. Consequently different conditions were proposed, changing storage times, temperature, and adapting semen extenders for each situation. However outstanding development has been reached, each species and conditions demand special needs. Our previous studies were mainly conducted on the evaluation of the semen quality parameters in pheasants (Marzoni et al., 2000a,b; Marzoni et al., 2001; Chiarini et al., 2002; Marzoni et al., 2002), thus the present study focused on the use of three different semen extenders to preserve pheasant semen over a 24-hours period.......
Effect of egg weight categories, storage time and storage temperature on incubation length in Pekin duck eggs (Anas platyrhynchos L.)
No full textThe primary factor that affects incubation time is the type of setter used with its temperature but incubation time depends also on age and size of the eggs and on temperature of the storage room.The incubation lenght of Pekin duck was studied according to a factorial experimental design, in relationship to storage time (3,7 and 14 days), storage temperature (18+/-1°C and 15+/- 1°C) and egg size. The experiment involved colection of 1,206 eggs. Results showed that storage from 3, through 7, to 14 days significantly prolonged the incubation time. The size of the eggs also significantly influenced the incubation tim
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