Effects of astaxanthin-rich algal meal (Haematococcus pluvalis) on growth performance, caecal campylobacter and clostridial counts and tissue astaxanthin concentration of broiler chickens
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- 作者：Waldenstedt ; L. ; Inborr ; J. ; Hansson ; I. ; Elwinger ; K.
- 关键词：Carotenoid ; Digestibility ; Campylobacter jejuni ; Clostridium perfringens ; Intestinal colonization
- 刊名：Animal Feed Science and Technology
- 出版年：2003
- 出版时间：August 25, 2003
- 年：2003
- 卷：108
- 期：1-4
- 页码：119-132
- 全文大小：97.9 K
文摘
The effects of a dietary astaxanthin from the microalgae Haematococcus pluvalis on broiler performance during an experimental infection with Campylobacter jejuni were studied. The experiment included 960 female broiler chickens, divided into 48 floor pens with free access to food and water. Half the number of birds were inoculated at 10 days of age with C. jejuni. The experimental diets were supplied with either 0, 7, 36, or 179mgastaxanthin/kg feed (0, 350, 1 800 and 8 950mgalgaemeal/kg feed, respectively), giving an intake of approximately 0, 1, 5 or 25mg astaxanthin per bird and per day at 5 weeks of age. In addition, two different application methods of the astaxanthin were studied. The first method mixed the algal meal into the mash prior to pelleting. The second method mixed the meal with oil and was then sprayed on top of the pellets.