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Chickens on Weed

其他書名	The Potential of Seaweed for Broiler Nutrition
出版	Wageningen University, 2022
ISBN	946447047X9789464470475
URL	http://books.google.com.hk/books?id=f6T2zgEACAAJ&hl=&source=gbs_api

註釋To increase the economic viability of the use of seaweed in livestock diets, products resulting from a biorefinery approach can be included in broiler diets. To investigate methods to improve seaweed digestibility, Chapter 4 discusses the effects of a proteolytic enzyme pre-treatment of green seaweed species U. laetevirens and red seaweed species Solieria chordalis co-products, resulting from a biorefinery process, before inclusion in a broiler diet. Broilers were fed diets including U. laetevirens or S. chordalis co-products, with or without proteolytic enzyme pre-treatment of the seaweed. The seaweed diets increased BW gain, and feed intake in the third week of the experiment. Birds fed the U. laetevirens compared to the S. chordalis diets had a higher BW gain, and a lower FCR. Seaweed inclusion reduced diet digestibility. Birds fed U. laetevirens vs. S. chordalis diets had shorter villi. Untreated versus treated seaweed in the diets led to lower plasma Interleukin-13 levels. In conclusion, the proteolytic enzyme treatment of the seaweed co-products did not improve performance or health-related parameters, and reduced digestibility of the diets. U. laetevirens co-product inclusion did improve performance based on growth and FCR. It had a slight negative effect on duodenal villus length, and a positive effect on crypt depth. The inflammation response was strongly reduced in birds fed the untreated U. laetevirens diet, making the U. laetevirens co-product of interest for further research.