Dietary phosphorus deficiency impaired growth, intestinal digestion and absorption function of meat ducks
| Autor: | Huimin Xu, Shujun Dai, Keying Zhang, Xuemei Ding, Shiping Bai, Jianping Wang, Huanwei Peng, Qiufeng Zeng |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | Asian-Australasian Journal of Animal Sciences, Vol 32, Iss 12, Pp 1897-1906 (2019) |
| Druh dokumentu: | article |
| ISSN: | 1011-2367 1976-5517 |
| DOI: | 10.5713/ajas.18.0683 |
| Popis: | Objective An experiment was conducted to investigate the effects of dietary non-phytate phosphorus (nPP) deficiency on intestinal pH value, digestive enzyme activity, morphology, nutrient utilization, and gene expression of NaPi-IIb in meat ducks from 1 to 21 d of age. Methods A total of 525 one-d-old Cherry Valley ducklings were fed diets (with 7 pens of 15 ducklings, or 105 total ducklings, on each diet) with five levels of nPP (0.22%, 0.34%, 0.40%, 0.46%, or 0.58%) for 21 d in a completely randomized design. Five experimental diets contained a constant calcium (Ca) content of approximately 0.9%. Body weight (BW), body weight gain (BWG), feed intake (FI), and feed to gain ratio (F:G) were measured at 14 and 21 d of age. Ducks were sampled for duodenum and jejunum digestion and absorption function on 14 and 21 d. Nutrient utilization was assessed using 25- to 27-d-old ducks. Results The results showed ducks fed 0.22% nPP had lower (p |
| Databáze: | Directory of Open Access Journals |
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