کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
2448911 | 1554025 | 2007 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The effect of dietary barley level on volatile fatty acid concentration and manure ammonia emissions in finishing pigs
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موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم دامی و جانورشناسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: The effect of dietary barley level on volatile fatty acid concentration and manure ammonia emissions in finishing pigs The effect of dietary barley level on volatile fatty acid concentration and manure ammonia emissions in finishing pigs](/preview/png/2448911.png)
چکیده انگلیسی
An experiment was conducted to investigate the linear and quadratic effects of barley on volatile fatty acid (VFA) profile and manure ammonia emissions in pigs. Sixteen boars (66 kg) were assigned to one of four treatments (n = 4): (T1) 0 g/kg barley (control), (T2) 222 g/kg barley, (T3) 442 g/kg barley and (T4) 666 g/kg barley. Barley was substituted for wheat. The diets were formulated to contain similar concentrations of digestible energy and lysine, soya oil was adjusted to maintain net energy. Increasing barley levels caused a linear decrease in colonic (P < 0.01) and caecal pH (P < 0.001). Total caecal VFA and propionic acid were affected by dietary barley level (quadratic, P < 0.05). There was a linear decrease in the proportion of acetic acid (P < 0.001), isobutyric acid (P < 0.01), isovaleric acid (P < 0.05) with increasing levels of barley in both the caecum and colon. There was a linear increase in the proportion of propionic acid (P < 0.001) and butyric acid (P < 0.05) with increasing barley in the colon. Barley based diets had a lower ammonia emission from 96 to 240 h (P < 0.05) and from 0 to 240 h (P < 0.05) than the wheat based diet. In conclusion, a high level of barley is required to reduce offensive branch chained VFAs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Livestock Science - Volume 109, Issues 1â3, 15 May 2007, Pages 236-239
Journal: Livestock Science - Volume 109, Issues 1â3, 15 May 2007, Pages 236-239
نویسندگان
M.B. Lynch, T. Sweeney, J.J. Callan, J.V. O'Doherty,