The toxicological effect of dietary excess of saccharicterpenin,the extract of camellia seed meal,in piglets  

作　　者：WANG Man YU Bing HE Jun YU Jie LUO Yu-heng LUO Jun-qiu MAO Xiang-bin CHEN Dai-wen 

机构地区：[1]Key Laboratory of Animal Disease-Resistance Nutrition,Animal Nutrition Institute,Sichuan Agricultural University

出　　处：《Journal of Integrative Agriculture》2020年第1期211-224,共14页农业科学学报（英文版）

基　　金：financially supported by the earmarked fund for China Agriculture Research System (CARS-35);a grant from the Science and Technology Support Project of Sichuan Province, China (2016NYZ0052)

摘　　要：Recently, saccharicterpenin extracted from Camellia oleifera seed meal has become a widely used feed supplement in animal husbandry. In order to assess its safety, this study was designed to investigate the toxicity and histopathological effects of saccharicterpenin on piglets. One hundred-fifty weaned pigs((Yorkshire×Landrace)×Duroc), 75 males and 75 females with body weight(BW) of(7.35±0.29) kg, were randomly allotted to groups receiving diets supplemented with 0, 500, 1 000, 2 500 or 5 000 mg kg^–1 saccharicterpenin for 70 d. The diet with 500 mg kg^–1 saccharicterpenin supplementation improved liver glutathione peroxidase(GSH-Px) activity, and the diet with 1 000 mg kg^–1 saccharicterpenin supplementation improved liver glutathione S-transferase(GSH-S) activity in piglets on d 70(P<0.05). At 2 500 mg kg^–1, saccharicterpenin in the diets reduced average daily feed intake(ADFI) and average daily gain(ADG) of piglets from d 1 to 35, damaged the cardiac tissue and liver on d 35, and decreased white blood cell counts(WBC), activities of catalase(CAT) and GSH-Px, and concentrations of glucose(GLU) and urea nitrogen(BUN) in the blood of piglets on d 70(P<0.05). In addition, diets with 5 000 mg kg^–1 saccharicterpenin supplementation reduced ADFI, ADG and increased diarrhea rates of piglets from d 36 to 70, and decreased hemoglobin(HGB) concentration and activity of CAT in the blood of piglets on d 70(P<0.05). Moreover, at a rate of 5 000 mg kg^–1, saccharicterpenin supplementation increased pancreas index on d 35 and hepatic index on d 70, and damaged cardiac tissue, liver and spleen during the whole experimental period(P<0.05). These results suggested that dietary 500 mg kg^–1 saccharicterpenin supplementation had beneficial effects on piglets, but excessive supplementation(2 500 or 5 000 mg kg^–1) of saccharicterpenin in the diets could lead to growth retardation, hematological abnormalities and organ injuries.Recently, saccharicterpenin extracted from Camellia oleifera seed meal has become a widely used feed supplement in animal husbandry. In order to assess its safety, this study was designed to investigate the toxicity and histopathological effects of saccharicterpenin on piglets. One hundred-fifty weaned pigs（（Yorkshire×Landrace）×Duroc）, 75 males and 75 females with body weight（BW） of（7.35±0.29） kg, were randomly allotted to groups receiving diets supplemented with 0, 500, 1 000, 2 500 or 5 000 mg kg–1 saccharicterpenin for 70 d. The diet with 500 mg kg–1 saccharicterpenin supplementation improved liver glutathione peroxidase（GSH-Px） activity, and the diet with 1 000 mg kg–1 saccharicterpenin supplementation improved liver glutathione S-transferase（GSH-S） activity in piglets on d 70（P<0.05）. At 2 500 mg kg–1, saccharicterpenin in the diets reduced average daily feed intake（ADFI） and average daily gain（ADG） of piglets from d 1 to 35, damaged the cardiac tissue and liver on d 35, and decreased white blood cell counts（WBC）, activities of catalase（CAT） and GSH-Px, and concentrations of glucose（GLU） and urea nitrogen（BUN） in the blood of piglets on d 70（P<0.05）. In addition, diets with 5 000 mg kg–1 saccharicterpenin supplementation reduced ADFI, ADG and increased diarrhea rates of piglets from d 36 to 70, and decreased hemoglobin（HGB） concentration and activity of CAT in the blood of piglets on d 70（P<0.05）. Moreover, at a rate of 5 000 mg kg–1, saccharicterpenin supplementation increased pancreas index on d 35 and hepatic index on d 70, and damaged cardiac tissue, liver and spleen during the whole experimental period（P<0.05）. These results suggested that dietary 500 mg kg–1 saccharicterpenin supplementation had beneficial effects on piglets, but excessive supplementation(2 500 or 5 000 mg kg–1) of saccharicterpenin in the diets could lead to growth retardation, hematological abnormalities and organ injuries.

关 键 词：growth retardation HEMATOLOGY organ injury PIGLETS saccharicterpenin 

分 类 号：S828.5[农业科学—畜牧学]