检索结果-南通市图书馆

Tolerance and safety evaluation of sodium sulfate:A subchronic study in laying hens

在线全文

学校读者我要写书评

暂无评论

Animal Nutrition 2021年第2期7卷 576-586页

作者： Bing Liu Jiaming Zhu Qin Zhou dongyou yu College of Animal Sciences Zhejiang UniversityHangzhou310058China State Key Laboratory of Food Science and Technology and Synergetic Innovation Center of Food Safety and NutritionJiangnan UniversityWuxi214122China

Sodium sulfate(Na2SO4)is a readily available chlorine-free source of sodium,which could be used to reduce sodium chloride to maintain the ratio between chlorine and sodium in poultry *** supplementation with excessive levels of Na2SO4 might be detrimental to bird's health and per-formance.A subchronic study was carried out to investigate the potential adverse effects of an accidental oversupply of Na2SO4 in the diets of laying *** hundred and fifty 21-week-old Hy-Line White layers were randomly assigned to 5 treatments with 6 *** birds were fed diets supplemented with 0(control),0.3%,0.6%,1.5%,and 3.0%Na2SO4 for 8 *** perfor-mance,egg quality parameters,clinical blood parameters,histopathology,intestinal barrier func-tions,and intestinal microflora composition were *** clinical signs of intoxication or mortality were observed during the experimental *** results of this study showed that the optimal levels of Na2SO4(0.3%to 0.6%)significantly improved the laying rates,average daily egg mass,and eggshell quality of hens compared to the control(P<0.05).However,3.0%Na2SO4 produced negative effects on laying performance,eggshell quality,blood biochemistry,and partic-ularly on liver and kidney pathology,and intestinal morphology and barrier functions compared with the *** minor changes were observed in clinical blood parameters of hens receiving 1.5%Na2SO4,these were not considered to be of toxicological significance due to the absence of any organ pathological changes in *** conclusion,our results indicated that a Na2SO4 concentration of 1.5%was non-deleterious to laying hens after a daily administration for 56 d,namely that dietary supplementation of up to 5 times the maximum recommended dose is safely tolerated by laying hens.

关键词： Sodium sulfate Tolerance Histopathology Intestinal function Laying hen

鱼油的功效性成分、加工工艺及其在犬猫中应用的研究进展

在线全文

学校读者我要写书评

暂无评论

饲料工业 2024年第10期45卷 118-126页

作者：许佳张文府温超宇李俊姚婷兰新财余东游金华职业技术学院浙江金华321007 浙江大学动物科学学院浙江杭州310058 海特宠食科技(杭州)有限公司浙江杭州310052 中国农业科学院饲料研究所北京100081 北京市饲料监察所北京102218 浙江金大康动物保健品公司浙江金华321007

n-3多不饱和脂肪酸(n-3 polyunsaturated fatty acids,n-3 PUFA)是一类具有重要营养生理功能的脂肪酸。鱼油是n-3 PUFA的天然来源,含有丰富的二十碳五烯酸(Eicosapentaenoic acid,EPA)和二十二碳六烯酸(Docosahexaenoic acid,DHA)。鱼油的生产和精炼工艺日趋成熟,包括蒸馏、提取、酶解等过程。精炼而成的鱼油作为饲料原料已成为伴侣动物饲粮的一部分。n-3 PUFA对犬、猫疾病防治具有一定的辅助作用,可缓解心脑血管疾病、发挥抗炎作用、改善代谢性疾病等,同时也存在抗凝、不饱和脂肪酸过氧化等潜在问题。然而,当前鱼油应用于宠物方面的系统阐述鲜有报道。本文从鱼油加工工艺、功效性成分及其在犬猫上的研究进展进行综述,旨在为鱼油在宠物行业中的研究与应用提供参考依据。

关键词：鱼油 n-3多不饱和脂肪酸加工技术宠物疾病

改善骨关节病的饲粮对老年犬钙磷代谢及骨健康的影响

在线全文

学校读者我要写书评

暂无评论

动物营养学报 2024年第8期36卷 5319-5327页

作者：许佳王古玥冷春青葛冰倩温超宇迟春艳余东游金华职业技术学院农学院金华321007 台湾中兴大学兽医系中国台湾台中402202 海特宠食科技(杭州)有限公司杭州310057 上海伯纳天纯生物科技有限公司上海201112 浙江大学动物科学学院杭州310058

骨关节病作为老年犬常见的疾病,会严重影响宠物的健康以及生活质量,而通过饮食干预可能对改善骨骼疾病存在一定益处。本试验根据宠物年龄以及骨关节情况筛选出29只老年犬,平均年龄为9岁,年龄范围为6~14岁,通过临床试验,研究饲喂一种改... 详细信息

骨关节病作为老年犬常见的疾病,会严重影响宠物的健康以及生活质量,而通过饮食干预可能对改善骨骼疾病存在一定益处。本试验根据宠物年龄以及骨关节情况筛选出29只老年犬,平均年龄为9岁,年龄范围为6~14岁,通过临床试验,研究饲喂一种改善骨关节病的饲粮对老年犬钙磷代谢及骨健康的影响。采用自身对照的试验设计,记录饲喂前后体重和体况评分,对饲喂前后试验犬的骨健康、活力进行评估,采集饲喂前后血液进行血常规、血清生化指标和钙磷代谢相关指标的测定,其中8只犬采用双能X线测量饲喂前后骨密度。试验期56 d。结果表明:与饲喂前相比,饲喂后老年犬血液中平均红细胞血红蛋白含量与平均红细胞血红蛋白浓度显著提高(P0.05);对饲喂后血清生化指标无显著影响(P>0.05);饲喂后血清降钙素的含量显著升高(P0.05)。对饲喂前后老年犬进行双能X线测量发现,老年犬的骨密度变化不显著(P>0.05);饲喂后犬简要疼痛量表分数显著降低(P0.05)。综上所述,这种改善骨关节病的饲粮可以提高老年犬血清中降钙素的含量和血液中血红蛋白的含量并缓解疼痛。

关键词：犬粮老年犬营养钙磷代谢骨密度健康临床试验

Optimal dietary copper requirements and relative bioavailability for weanling pigs fed either copper proteinate or tribasic copper chloride

在线全文

学校读者我要写书评

暂无评论

Journal of Animal Science and Biotechnology 2020年第4期11卷 1189-1203页

作者： Gang Lin Yang Guo Bing Liu Ruiguo Wang Xiaoou Su dongyou yu Pingli He Institute of Quality Standards and Testing Technology for Agricultural Products Chinese Academy of Agricultural SciencesKey Laboratory of Agrifood Safety and QualityMinistry of Agriculture and Rural AffairsBeijing 10081People’s Republic of China College of Animal Science Zhejiang UniversityKey Laboratory of Animal Nutrition and Feed in East China of Ministry of Agriculture and Rural AffairsHangzhouZhejiang 310058People’s Republic of China State Key Laboratory of Food Science and Technology Jiangnan UniversityWuxiJiangsu 214122People’s Republic of China State Key Laboratory of Animal Nutrition College of Animal Science and TechnologyChina Agricultural UniversityBeijing 100193People’s Republic of China.

Background: The objective of this study was to determine the effects of supplementing Cu on growth performance, Cu metabolism and Cu-related enzyme activities of weanling pigs fed diets with two different Cu sources, and to estimate optimal Cu requirements and relative bioavailability from these two sources for ***: Weanling pigs were allocated to 14 treatments arranged factorially, including 6 added Cu levels(5, 10,20, 40, 80, 160 mg/kg), and 2 mineral sources(tribasic Cu chloride, TBCC and copper proteinate, Cu Pro), as well as one negative control(0 mg/kg added Cu level) and one maximum allowed level treatment(200 mg/kg TBCC) for the entire 38-d experiment. Growth performance, mineral status and enzyme activities were measured at the end of this ***: Increasing levels of Cu showed linear and quadratic responses(P 80 mg/kg) and Cu Pro(> 20 mg/kg) significantly decreased(P < 0.05) diarrhea incidence of weanling pigs. There were linear and quadratic increases(P < 0.01) in bile, hepatic,and intestinal Cu concentrations, fecal Cu contents, and plasma enzyme activities(alkaline phosphatase,ceruloplasmin, Cu, Zn-Superoxide dismutase(Cu/Zn SOD), and glutathione peroxidase), whereas plasma malondialdehyde decreased(P < 0.01) linearly and quadratically as dietary Cu level increased. Similarly, pigs fed Cu Pro absorbed and retained more Cu and excreted less Cu than those fed TBCC when supplemented 80 mg/kg and above. Optimal dietary Cu requirements for pigs from 28 to 66 d of age estimated based on fitted broken-line models(P < 0.05) of bile Cu, plasma Cu/Zn SOD and growth performance were 93–140 mg/kg from TBCC, and 63–98 mg/kg from Cu Pro accordingly. According to slope ratios from multiple linear regression, the bioavailability value of Cu Pro relative to TBCC(100%) was 156–263%(P < 0.01).Conclusion: The findings indicated that Cu recommendation from current NRC(5–

关键词： Bioavailability Copper Copper proteinate Excretion Piglet Requirement Tribasic copper chloride

香芹酚的生理功能及其在家禽生产中的应用研究进展

在线全文

学校读者我要写书评

暂无评论

中国畜牧杂志 2024年第2期60卷 46-51页

作者：葛超悦吕雨杰吴潋池罗鑫宇胡兆莹刘兵余东游浙江大学海南研究院海南三亚572025 浙江大学动科学院浙江杭州310012

香芹酚是一种在芳香植物中普遍存在的生物学活性物质,具有抗炎、抗氧化、改善肠道健康等生理功能,被广泛应用于家禽饲料添加剂,以改善家禽肠道健康,提高畜禽产品品质。在全球禁抗的大背景下,深入研究和解析香芹酚等产品的功能特性对其... 详细信息

香芹酚是一种在芳香植物中普遍存在的生物学活性物质,具有抗炎、抗氧化、改善肠道健康等生理功能,被广泛应用于家禽饲料添加剂,以改善家禽肠道健康,提高畜禽产品品质。在全球禁抗的大背景下,深入研究和解析香芹酚等产品的功能特性对其在家禽生产中的应用十分重要。本文主要围绕香芹酚的结构特征、生理功能及其在家禽养殖中的应用进行阐述,旨为香芹酚在家禽生产中的科学应用提供理论依据和技术支持。

关键词：香芹酚生理功能肠道健康家禽

维普期刊数据库博看期刊

Probiotic Paenibacillus polymyxa 10 and Lactobacillus plantarum 16 enhance growth performance of broilers by improving the intestinal health

在线全文

学校读者我要写书评

暂无评论

Animal Nutrition 2021年第3期7卷 829-840页

作者： Baikui Wang Li Gong yuanhao Zhou Li Tang Zihan Zeng Qi Wang Peng Zou dongyou yu Weifen Li Key Laboratory of Molecular Animal Nutrition of the Ministry of Education Key Laboratory of Animal Nutrition and Feed Science(Eastern of China)of the Ministry of AgricultureKey Laboratory of Animal Feed and Nutrition of Zhejiang ProvinceInstitute of Animal Nutrition and Feed SciencesCollege of Animal SciencesZhejiang University310058HangzhouChina Hainan Institute Zhejiang UniversitySanya 572000China

With the ever-growing strict prohibitions on antibiotic growth promoters(AGP)in animal production,in-feed probiotics are becoming attractive alternatives to antibiotics in the poultry *** investigate the effects of Paenibacillus polymyxa 10 and Lactobacillus plantarum 16 on the growth performance and intestinal health of broilers,540 male Cobb 500 broilers of 1 d old were randomly divided into 3 groups with 6 replicates per group and 30 chicks per *** were fed with either a basal diet or basal diets supplemented with 1×108 colony-forming units(CFU)/kg *** 10(BSC10)or *** 16(Lac16)for 42 *** showed that Lac16 treatment improved(P0.05)the growth performance of the starter phase *** increased villus height(P<0.05)at d 14,21 and 42 and villus height to crypt depth ratio(P<0.05)at d 14 and 21 were observed in the ileum of the 2 probiotic ***,transmission electron microscopy results showed that the 2 probiotics enhanced the intestinal epithelial *** probiotic treatments up-regulated(P<0.05)the mRNA expression of fatty acid binding protein 1(FABP1)and sodium-dependent glucose transporters-1(SGLT-1)in the ileal mucosa of broilers at d *** addition,BSC10 and Lac16 treatments significantly(P<0.05)increased the relative abundance of short-chain fatty acids-producing bacteria,such as Butyricicoccus pullicaecorum,Faecalibacterium prausnitzii,Lachnospira and Cop-rococcu,and significantly(P<0.05)decreased the relative abundance of enteric pathogens(Escherichia coli,Bacteroides fragilis and Shigella sonnei).Furthermore,the 2 probiotic treatments also increased the positive connection among the intestinal microbes and the carbohydrate metabolism-related pathways of the intes-tinal bacteria(P<0.05),with decreasing(P<0.05)nucleotides biosynthesis-related pathways of the intesti

关键词： Paenibacillus polymyxa Lactobacillus plantarum Growth performance Intestinal health Broiler

Dietary supplementation of Macleaya cordata extract and Bacillus in combination improve laying performance by regulating reproductive hormones,intestinal microbiota and barrier function of laying hens

在线全文

学校读者我要写书评

暂无评论

Journal of Animal Science and Biotechnology 2023年第2期14卷 690-710页

作者： Fei Wang Peng Zou Shujie Xu Qi Wang yuanhao Zhou Xiang Li Li Tang Baikui Wang Qian Jin dongyou yu Weifen Li Key Laboratory of Animal Molecular Nutrition of Education of Ministry National Engineering Laboratory of Biological Feed Safety and Pollution Prevention and ControlKey Laboratory of Animal Feed and Nutrition of Zhejiang ProvinceInstitute of Animal Nutrition and Feed SciencesCollege of Animal SciencesZhejiang UniversityHangzhou 310058China Hainan Institute Zhejiang UniversityYazhou Bay Sci-Tech CityYongyou Industry ParkSanya 572000China

Background:This study aimed to investigate whether the combination of Macleaya cordata extract(MCE)and Bacil-lus could improve the laying performance and health of laying hens ***:A total of 36029-week-old Jingbai laying hens were randomly divided into 4 treatments:control group(basal diet),MCE group(basal diet+MCE),Probiotics Bacillus Compound(PBC)group(basal diet+compound Bacil-lus),MCE+PBC group(basal diet+MCE+compound Bacillus).The feeding experiment lasted for 42 ***:The results showed that the laying rate and the average daily egg mass in the MCE+PBC group were significantly higher than those in the control group(P<0.05)and better than the MCE and PBC ***-tion of MCE and Bacillus significantly increased the content of follicle-stimulating hormone(FSH)in the serum and up-regulated the expression of related hormone receptor gene(estrogen receptor-β,FSHR and luteinizing hormone/choriogonadotropin receptor)in the ovary of laying hens(P<0.05).In the MCE+PBC group,the mRNA expressions of zonula occluden-1,Occludin and mucin-2 in jejunum was increased and the intestinal epithelial barrier detected by transmission electron microscopy was enhanced compared with the control group(P<0.05).In addition,compared with the control group,combination of MCE and Bacillus significantly increased the total antioxidant capacity and catalase activity(P<0.05),and down-regulated the mRNA expressions of inflammation-related genes(interleukin-1βand tumor necrosis factor-α)as well as apoptosis-related genes(Caspase 3,Caspase 8 and P53)(P<0.05).The concen-tration of acetic acid and butyric acid in the cecum content of laying hens in the MCE+PBC group was significantly increased compared with the control group(P<0.05).Conclusions:Collectively,dietary supplementation of 600μg/kg MCE and 5×108 CFU/kg compound Bacillus can improve laying performance by improving microbiota to enhance antioxidant capacity and intestinal barrier,regulate reproductive hormones and the

关键词： Bacillus Intestinal microbiota Laying hens Laying performance Macleaya cordata extract Reproductive hormones

大麦型饲粮中添加非淀粉多糖酶对生长猪促生长效应的研究

在线全文

学校读者我要写书评

暂无评论

中国饲料 2001年第10期 19-20页

作者：王宗沛余东游浙江省宁海县畜牧中心浙江大学饲料所

大麦在谷物饲料中的地位仅次于玉米，其蛋白质、氨基酸、矿物质和维生素含量均超过玉米。尽管大麦的营养价值较高，但由于其含有抗营养因子-非淀粉多糖(NSP)而使畜禽的消化率较低。大麦中的NSP主要为β-葡聚糖、木聚糖和纤维素。目前国... 详细信息

大麦在谷物饲料中的地位仅次于玉米，其蛋白质、氨基酸、矿物质和维生素含量均超过玉米。尽管大麦的营养价值较高，但由于其含有抗营养因子-非淀粉多糖(NSP)而使畜禽的消化率较低。大麦中的NSP主要为β-葡聚糖、木聚糖和纤维素。目前国外已开发出了针对大麦饲粮的酶制剂，这类酶主要是由β-葡聚糖酶、木聚糖酶和纤维素酶组成的NSP酶。东欧等国家通过使用NSP酶制剂已使大麦、小麦等能量饲料在饲料中的用量达70 %。在我国这方面的研究较少，本试验探讨了大麦型饲粮中添加NSP酶对仔猪、生长猪生产性能的影响，旨在为养猪生产中广泛应用添加酶制剂的大麦型日粮提供科学依据。1 材料与方法1.1 试验动物选用浙江省宁海县振兴禽业有限公司的“杜×长×大”三元杂交猪180头，按体重相近、遗传基础相似、性别各半的原则，随机分成对照和试验两组，每组设6个重复，每个重复15头，分别饲养在同一猪舍的12个栏内。

关键词：生长猪大麦型饲粮饲料添加剂非淀粉多糖酶促生长效应生产性能

Effect of dietary supplementation of probiotic on performance and intestinal microflora of Chinese soft-shelled turtle(Trionyx Sinensis)

在线全文

学校读者我要写书评

暂无评论

Effect of dietary supplementation of probiotic on performanc...