کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8502224 | 1553967 | 2014 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Pen hygiene, N, P and K budgets and calculated nitrogen emission for organic growing-finishing pigs in two different housing systems with and without pasture access
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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: Pen hygiene, N, P and K budgets and calculated nitrogen emission for organic growing-finishing pigs in two different housing systems with and without pasture access Pen hygiene, N, P and K budgets and calculated nitrogen emission for organic growing-finishing pigs in two different housing systems with and without pasture access](/preview/png/8502224.png)
چکیده انگلیسی
The effects of two housing systems (deep litter and straw-flow), with and without access to pasture during the summer period, were studied in an organic growing-finishing pig herd. Pen hygiene studies, N, P and K budgets and estimations of nitrogen emission were made for two batches (8Â pens/batch and 16Â pigs/pen) one during the winter period and one during the summer period. It was concluded that there were no significant differences in overall pen hygiene between the housing systems. During the growing period in the summer, the pen hygiene on the outdoor concrete area was significantly better (P<0.05) when the pigs had access to pasture. In addition, the total pen hygiene (indoors+concrete area outdoors) tended (P=0.09) to be cleaner with access to pasture during the summer period. The N-losses of the amount of N excreted were the same (26-27%) during the winter period as during the summer period. The amount of N excreted was on average 6.0Â kg N per pig during the winter, and 4.2Â kg N per pig during the summer; this was equivalent to an N-emission of 1.5-1.6Â kg N/pig during winter and 1.1-1.2Â kg N/pig during summer. The difference was mainly due to a higher feed consumption and more straw usage during the winter. In comparison to the calculated N-emissions from a non-organic pig, this was approximately 3-4 times greater. In the present study, a 10% larger feed usage explained the differences in N-emission by a factor of 1.2, a 15% higher crude protein level explained the differences by a factor of 1.3 and finally a larger fouled area explained the differences by a factor of 2.3. Differences in temperature and airflow were not taken into account in these calculations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Livestock Science - Volume 165, July 2014, Pages 138-146
Journal: Livestock Science - Volume 165, July 2014, Pages 138-146
نویسندگان
Anne-Charlotte Olsson, Knut-Håkan Jeppsson, Jos Botermans, Hans von Wachenfelt, Mats Andersson, Christer Bergsten, Jørgen Svendsen,