東華大學圖書館 |

語系: 繁體中文

說明(常見問題)

回圖書館首頁

手機版館藏查詢

登入

回首頁

切換: 標籤 | MARC模式 | ISBD

Characterization and prevention of F...

Channarayapatna Krishnegowda, Girish.

FindBook

Google Book

Amazon

博客來

Characterization and prevention of Fusarium mycotoxicoses in turkeys.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Characterization and prevention of Fusarium mycotoxicoses in turkeys./
作者:	Channarayapatna Krishnegowda, Girish.
面頁冊數:	183 p.
附註:	Source: Dissertation Abstracts International, Volume: 71-01, Section: B, page: 0003.
Contained By:	Dissertation Abstracts International71-01B.
標題:	Health Sciences, Toxicology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=NR55943
ISBN:	9780494559437

Characterization and prevention of Fusarium mycotoxicoses in turkeys.
Channarayapatna Krishnegowda, Girish.

Characterization and prevention of Fusarium mycotoxicoses in turkeys. - 183 p.

Source: Dissertation Abstracts International, Volume: 71-01, Section: B, page: 0003.

Thesis (Ph.D.)--University of Guelph (Canada), 2009.

Mycotoxins are secondary fungal metabolites with varying chemical structures and biological effects. Contamination of foods and feeds with mycotoxins is a significant problem worldwide. The major mycotoxin producing fungi are Aspergillus, Penicillium and Fusarium. Occurrence of Fusarium mycotoxins is common in temperate regions of the world including Canada. There is a lack of information on the effects of feeding low concentrations of feed-borne Fusarium mycotoxins on turkeys. Experiments were conducted to study the effects of feeding grains naturally contaminated with low concentrations of Fusarium mycotoxins to turkeys. The efficacy of a polymeric glucomannan mycotoxin adsorbent (GMA) in preventing any adverse effects was also evaluated. The contaminated diets were formulated by replacing control corn and wheat with contaminated corn and wheat, respectively. The feeding of contaminated grains adversely affected performance, metabolism and health of turkeys. Supplementation of contaminated diets with GMA prevented many of the adverse effects. The reduced performance was thought be due to decreased absorption of nutrients from the gut and due to behavioral changes caused by alterations in brain neurotransmission. This hypothesis was tested by measuring the effect of diet on intestinal morphology and brain neurochemistry. The feeding of contaminated grains adversely affected intestinal morphology and brain serotonergic neurotransmission. Supplementation of GMA prevented many of these adverse effects. The effects of feeding contaminated diets on intestinal immunity and cell proliferation, and histology of immune organs revealed adverse effects on intestinal lymphocyte subsets, cell proliferation in crypts and cellularity of lymphoid organs. GMA prevented the adverse effects on intestinal lymphocyte subsets. In summary, performance, metabolism, intestinal morphology and brain neurochemistry in turkeys was adversely affected by feed-borne Fusarium mycotoxins. The immune system of turkeys was sensitive to the effects of feed-borne Fusarium mycotoxins as reflected in adverse effects at both the systemic and at the intestinal levels. It was concluded that the feeding of grains naturally contaminated with Fusarium mycotoxins to turkeys should be minimised.

ISBN: 9780494559437Subjects--Topical Terms:

1017752
Health Sciences, Toxicology.

Characterization and prevention of Fusarium mycotoxicoses in turkeys.
LDR:03114nam 2200265 4500 001 1397954
005 20110907152239.5
008 130515s2009 ||||||||||||||||| ||eng d
020 $a 9780494559437
035 $a (UMI)AAINR55943
035 $a AAINR55943
040 $a UMI $c UMI
100 1 $a Channarayapatna Krishnegowda, Girish. $3 1676815
245 1 0 $a Characterization and prevention of Fusarium mycotoxicoses in turkeys.
300 $a 183 p.
500 $a Source: Dissertation Abstracts International, Volume: 71-01, Section: B, page: 0003.
502 $a Thesis (Ph.D.)--University of Guelph (Canada), 2009.
520 $a Mycotoxins are secondary fungal metabolites with varying chemical structures and biological effects. Contamination of foods and feeds with mycotoxins is a significant problem worldwide. The major mycotoxin producing fungi are Aspergillus, Penicillium and Fusarium. Occurrence of Fusarium mycotoxins is common in temperate regions of the world including Canada. There is a lack of information on the effects of feeding low concentrations of feed-borne Fusarium mycotoxins on turkeys. Experiments were conducted to study the effects of feeding grains naturally contaminated with low concentrations of Fusarium mycotoxins to turkeys. The efficacy of a polymeric glucomannan mycotoxin adsorbent (GMA) in preventing any adverse effects was also evaluated. The contaminated diets were formulated by replacing control corn and wheat with contaminated corn and wheat, respectively. The feeding of contaminated grains adversely affected performance, metabolism and health of turkeys. Supplementation of contaminated diets with GMA prevented many of the adverse effects. The reduced performance was thought be due to decreased absorption of nutrients from the gut and due to behavioral changes caused by alterations in brain neurotransmission. This hypothesis was tested by measuring the effect of diet on intestinal morphology and brain neurochemistry. The feeding of contaminated grains adversely affected intestinal morphology and brain serotonergic neurotransmission. Supplementation of GMA prevented many of these adverse effects. The effects of feeding contaminated diets on intestinal immunity and cell proliferation, and histology of immune organs revealed adverse effects on intestinal lymphocyte subsets, cell proliferation in crypts and cellularity of lymphoid organs. GMA prevented the adverse effects on intestinal lymphocyte subsets. In summary, performance, metabolism, intestinal morphology and brain neurochemistry in turkeys was adversely affected by feed-borne Fusarium mycotoxins. The immune system of turkeys was sensitive to the effects of feed-borne Fusarium mycotoxins as reflected in adverse effects at both the systemic and at the intestinal levels. It was concluded that the feeding of grains naturally contaminated with Fusarium mycotoxins to turkeys should be minimised.
590 $a School code: 0081.
650 4 $a Health Sciences, Toxicology. $3 1017752
650 4 $a Agriculture, Animal Culture and Nutrition. $3 1017857
650 4 $a Health Sciences, Alternative Medicine. $3 1669893
690 $a 0383
690 $a 0475
690 $a 0496
710 2 $a University of Guelph (Canada). $3 1018650
773 0 $t Dissertation Abstracts International $g 71-01B.
790 $a 0081
791 $a Ph.D.
792 $a 2009
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=NR55943