English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

. The objective of this study was to compare three genetic groups of ducks: P9(French Pekin), K2 (bred from wild mallards – Anas platyrhynchos L.and Pekin duck), and KhO1 (hybrid of Khaki Campbell drake and Orpington Fauveduck) after two breeding seasons for body weight and length, length ofintestine and its segments, percentage of other internal organs, and breastmuscle microstructure. The study used 60 ducks, 20 birds (10 males and10 females) from each genetic group. At 110 weeks of age, P9 ducks exhibitedsignificantly ( p ) greater body weight and length, and lengthof intestine and its segments (except for colon length) compared to K2 andKhO1 ducks. KhO1 ducks had significantly shorter jejunum and ileum comparedto K2 birds. The lighter K2 and KhO1 ducks had significantly greater relativelength of intestine and its segments. In P9 ducks, liver, heart, and gizzardwere heavier and spleen percentage in body weight significantly lower than inK2 and KhO1 birds. KhO1 ducks had a significantly higher percentage ofproventriculus compared to the other duck groups. The different geneticorigins of the ducks had no effect on microstructural characteristics ofm. pectoralis superficialis except for perimysium and endomysiumthickness. Our study provided information about differences in the digestivetract morphometry and breast muscle microstructure of ducks from threegenetic groups after two reproductive seasons, which are maintained in aconservation programme of genetic resources in Poland.

Digestive tract morphometry and breast muscle microstructure in spent breeder ducks maintainedin a conservation programme of genetic resources