EJPAU 2007. Jamroz D. , Wertelecki T. , Żyłka R. THE RETENTION OF MINERAL SUBSTANCES, QUALITY AND CHEMICAL COMPOSITION OF BONES OF CHICKENS FED DIETS CONTAINING DIFFERENT CALCIUM AND PHOSPHORUS LEVELS

Electronic Journal of Polish Agricultural Universities (EJPAU) founded by all Polish Agriculture Universities presents original papers and review articles relevant to all aspects of agricultural sciences. It is target for persons working both in science and industry,regulatory agencies or teaching in agricultural sector. Covered by IFIS Publishing (Food Science and Technology Abstracts), ELSEVIER Science - Food Science and Technology Program, CAS USA (Chemical Abstracts), CABI Publishing UK and ALPSP (Association of Learned and Professional Society Publisher - full membership). Presented in the Master List of Thomson ISI.

2007
Volume 10
Issue 3

Topic:

Animal Husbandry

ELECTRONIC
JOURNAL OF
POLISH
AGRICULTURAL
UNIVERSITIES

Jamroz D. , Wertelecki T. , Żyłka R. 2007. THE RETENTION OF MINERAL SUBSTANCES, QUALITY AND CHEMICAL COMPOSITION OF BONES OF CHICKENS FED DIETS CONTAINING DIFFERENT CALCIUM AND PHOSPHORUS LEVELS, EJPAU 10(3), #04.
Available Online: http://www.ejpau.media.pl/volume10/issue3/abs-04.html

THE RETENTION OF MINERAL SUBSTANCES, QUALITY AND CHEMICAL COMPOSITION OF BONES OF CHICKENS FED DIETS CONTAINING DIFFERENT CALCIUM AND PHOSPHORUS LEVELS

Dorota Jamroz¹, Tomasz Wertelecki², Romuald Żyłka³
¹ Department of Animal Nutrition and Feed Management, Wrocław University of Environmental and Life Sciences, Wrocław, Poland
² Department of Animal Nutrition and Feed Science, Wrocław University of Environmental and Life Sciences, Poland
³ Department of Biophysics, Wrocław University of Environmental and Life Sciences, Poland

ABSTRACT

Lowered calcium concentration in feed mixture from 11.0 to 9.1 g kg^-1 and phosphorus content from 7.0 to 6.0 g kg^-1 has decreased the body weight in 28 day of life, as well as Ca and Cu accretion in organism, however the phosphorus, magnesium and manganese retention was better in group fed diet with lower Ca/P content. Better bone mechanical quality parameters and higher Ca amounts in bones were obtained in chicken fed diets containing a higher Ca and P amounts in the diets; in the P, Mg, Mn, Cu, Zn content in bone ash only small variations were observed.

Key words: bones, broilers, mineral composition.

Dorota Jamroz
Department of Animal Nutrition and Feed Management,
Wrocław University of Environmental and Life Sciences, Wrocław, Poland
Chełmońskiego 38 C, 51-631 Wrocław, Poland
phone: +48 71 3205 828
fax: +48 71 3205 965
email: dorota.jamroz@up.wroc.pl

Tomasz Wertelecki
Department of Animal Nutrition and Feed Science,
Wrocław University of Environmental and Life Sciences, Poland
Chełmonskiego 38 D, 51-630 Wrocław, Poland
email: wwwwtw@interia.pl

Romuald Żyłka
Department of Biophysics,
Wrocław University of Environmental and Life Sciences, Poland
Norwida 25, 50-375 Wrocław, Poland

Responses to this article, comments are invited and should be submitted within three months of the publication of the article. If accepted for publication, they will be published in the chapter headed 'Discussions' and hyperlinked to the article.