HERITABILITIES FOR DURATION OF FERTILITY TRAITS IN BROWN TSAIYA FEMALE DUCKS (ANAS-PLATYRHYNCHOS) BY ARTIFICIAL-INSEMINATION WITH POOLED MUSCOVY (CAIRINA-MOSCHATA) SEMEN

Authors
TAI C POIVEY JP ROUVIER R
Citation
C. Tai et al., HERITABILITIES FOR DURATION OF FERTILITY TRAITS IN BROWN TSAIYA FEMALE DUCKS (ANAS-PLATYRHYNCHOS) BY ARTIFICIAL-INSEMINATION WITH POOLED MUSCOVY (CAIRINA-MOSCHATA) SEMEN, British Poultry Science, 35(1), 1994, pp. 59-64
Citations number
13
Categorie Soggetti
Agriculture Dairy & AnumalScience
Journal title
British Poultry Science → ACNP
ISSN journal
00071668
Volume
35
Issue
1
Year of publication
1994
Pages
59 - 64
Database
ISI
SICI code
0007-1668(1994)35:1<59:HFDOFT>2.0.ZU;2-3
Abstract
1. Fertility traits in 348 Brown Tsaiya female ducks were analysed fol lowing intergenenic crossbreeding by artificial insemination (AI) with pooled Muscovy semen. The females descended from 18 sires and 107 dam s. At 50 weeks of age, the ducks were intra-vaginally inseminated once with 0.03 ml of pooled Muscovy semen. Subsequently eggs were collecte d for 15 d and set for incubation up to candling 10 d later. 2. Averag e fertility decreased from 87% at day 2 after Al to 53% at day 6 and l ess than 7% from day 10 onwards. 3. The best criterion of selection fo r duration of fertility seems to be the number of fertile eggs from 2n d day up to the 15th day after AI. Heritability estimates for this tra it were h(s)2 0.29 +/- 0.18., h(D)2 = 0.38 +/- 0-22.