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.: Home > Animal Science Papers and Reports > 2009 > Volume 27 Number 3 > Dariusz Kokoszyٌski*, Zenon Bernacki

Selected meat production traits in ducks from P11 and P22 conservative strains

Dariusz Kokoszyٌski*, Zenon Bernacki
Department of Poultry Breeding, University of Technology and Life Sciences in Bydgoszcz Mazowiecka 28, 85-084 Bydgoszcz, Poland
Abstract :

Meat production traits were studied in ducks belonging to P11 and P22 conservative strains. Twenty males and 20 females from each strain were kept indoors on deep litter in a controlled environment, and fed ad lib. the standard commercial mixtures. Body weight on day 1 and week 7 of age as well as the amount of feed consumed to the end of week 7 (i.e. over the whole rearing period) were recorded. At the end of week 7, five males and five females of each strain were slaughtered and dissected. Samples of breast and leg muscles were taken to determine the content of six selected metals. Body weight of 7-week-old males and females was higher in strain P11 compared to strain P22. P22 males were significantly heavier than P22 females. Rate of growth was high (>190%) and occurred greater in males. Feed intake per kg weight gain (FCR) until the end of week 7 of age was lower in P11 than in P22 males and females. P11 birds (sexes pooled) had greater pre-slaughter body weight and dressing percentage than P22 birds. Moreover, P11 males showed significantly greater pre-slaughter body weight than P11 females, and P22 males significantly higher dressing percentage compared to females of the same strain. Percentage of breast and leg muscles of carcass with neck was greater in males (23.5%) and females (23.6%) of strain P22 than in those of strain P11 (22.5 and 22.6% muscles, respectively). The proportion of skin with subcutaneous fat ranged from 28.3 to 32.3% and in both strains was higher in females than in males. The breast muscles of females and males of both strains contained more iron and copper, and less magnesium and zinc compared to leg muscles.

Keywords :
ducks / conservative strain / feed conversion / metals / muscles / slaughter value

Date Deposited : 05 Aug 2011 10:22

Last Modified : 05 Aug 2011 10:22

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Volume 27, Number 3, - 2009

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