质量控制图在水产饲料氨基酸分析中的应用   总被引：1，自引：0，他引：1  

杜雪莉  宋军  张凤枰  李应东  刘耀敏 《淡水渔业》2015,(4)

通过对实验室自制标准物料-豆粕样品中氨基酸含量的多次测定,建立X-S质量控制图,开展水产饲料氨基酸分析日常质量控制。试验按照GB/T 18246-2000,通过微波水解-离子交换-柱后衍生-紫外检测法对豆粕样品氨基酸含量进行连续测定,并以FAPAS奶粉标准物质验证,利用偏度-峰度检验法对离群值进行判断,建立赖氨酸、甘氨酸、氨基酸总量质量控制图。结果显示,质量控制图中豆粕质控样赖氨酸、甘氨酸、氨基酸总量测定的RSD值均小于4%,FAPAS奶粉标准物质测定值落在参考范围内,建立的质量控制图能对日常氨基酸检测结果进行有效监控。结果表明,所建立氨基酸质量控制图直观有效,能对过程存在的异常因素起到预警作用,并可节约成本。  相似文献   

凝胶渗透色谱净化-气相色谱法同时测定饲料中4种抗氧化剂   总被引：1，自引：1，他引：0  

杨晓凤 《中国饲料》2011,(5)

本文建立了凝胶渗透色谱净化(GPC)-气相色谱法(GC)同时测定饲料中2,6-二叔丁基对甲酚(BHT)、叔丁基羟基茴香醚(BHA)、叔丁基对苯二酚(TBHQ)和乙氧喹(EQ)4种抗氧化剂方法。4种抗氧化剂在10～400mg/L时与峰面积有良好的线性关系(r2>0.9999),检出限(3S/N)为0.37～0.46 mg/kg,添加回收率为82.7%～98.8%,相对标准偏差(n=5)为1.7%～4.3%。  相似文献   

Feeding native laying hens diets containing palm kernel meal with or without enzyme supplementations: 1. Feed conversion ratio and egg production     

《The Journal of Applied Poultry Research》2011,20(1):40-49

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数字PCR技术在动物疫病检测中的应用     

数字PCR技术在动物疫病检测中的应用 《畜牧与饲料科学》2021,42(6):124-128

为了支持动物疫病流行地区的控制及消除计划,以及在动物疫病非流行地区进行有效筛查,必须使用更加准确灵敏的诊断手段。数字PCR可实现绝对定量及痕量核酸的检测,与传统检测方法相比具有不依赖参考物或标准品、对抑制剂具有较高耐受性、灵敏度和精准度更高的优点。数字PCR作为一种定量分析的核酸检测新方法,在动物疫病检测中得到了应用,围绕数字PCR技术的原理、应用、存在的问题及发展趋势等进行综述及分析,为数字PCR在动物疫病检测中的进一步应用提供参考。  相似文献   

Rabbit Behavior     

《Veterinary Clinics of North America: Exotic Animal Practice》2021,24(1):53-62

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Feed preference and growth response of juvenile Litopenaeus vannamei to supplementation of marine chemoattractants in a fishmeal‐challenged diet     

Alberto J. P. Nunes  Hassan Sabry‐Neto  Severino Oliveira‐Neto  Lena Burri 《Journal of the World Aquaculture Society》2019,50(6):1048-1063

This study compared the feed preference and growth response of Litopenaeus vannamei to chemoattractants. A diet with 3% fishmeal was supplemented with either 3% salmon meal (POS), 3% soy protein concentrate (NEG), 3% krill meal (KRM), 3% squid meal (SQM), 3% shrimp head meal (SHM), 3% shrimp meal (SM), 3% squid liver meal (SLM), or 5% liquid sardine hydrolysate (SAH). Shrimp with a body weight (BW) of 0.99 ± 0.08 g were stocked at 100 animals/m² in 56 tanks of 1 m³ and fed 10 times daily for 74 days. Feed preference was evaluated by feeding shrimp of 10.87 ± 1.82 g in excess twice a day for 10 days in two separate feeding trays allocated in 50 tanks of 0.5 m³. Survival reached 93.3 ± 5.80% and was unaffected by supplementation. Final BW was the highest for shrimp fed the KRM‐supplemented diet (11.97 ± 0.93 g), followed by POS (11.11 ± 0.77 g) and SQM (11.01 ± 1.17 g). Diets SHM, SM, SLM, and NEG showed a lower shrimp BW than POS, but were not statistically different among them. Shrimp fed the SAH diet achieved the lowest BW (10.06 ± 1.02 g). The highest gained yield was obtained with diets KRM and POS. No statistical difference was observed in shrimp yield among other diets. The lowest feed conversion ratio (FCR) was achieved with shrimp fed KRM (1.31 ± 0.05) when compared to diets SHM (1.47 ± 0.05), SAH (1.47 ± 0.07), and SLM (1.45 ± 0.17). Two‐by‐two comparisons indicated that shrimp preferred SHM and KRM, except when these were compared to SQM and SLM. No difference in feed preference was found between diets with SQM and SLM. SAH was the least preferred raw material in all comparisons. Results indicated that KRM acts as a powerful feeding effector and growth enhancer in fishmeal‐challenged diets for whiteleg shrimp. A dietary supplementation with 3% KRM is more effective than the same dose of any other chemoattractant evaluated.  相似文献   

内蒙古牧区现代化建设中畜牧业高质量发展对策的研究     

郭天龙  金海  李长青  翟琇  李健 《畜牧与饲料科学》2020,41(2):41-45

在对内蒙古部分牧业旗（县）实地调研的基础上,总结分析以33个牧业旗（县）为代表的内蒙古牧区畜牧业发展取得的进步和存在的主要问题,系统地提出了注重产业化经营、注重规划专业化生产布局、注重草原畜牧业生产方式转变、注重良种繁育体系建设、注重调整畜群结构及繁育方式、注重农牧区饲草资源互补利用体系建设的“六注重”牧区畜牧业高质量发展建议,以期为推进内蒙古牧区现代化建设提供参考。  相似文献   

山西省畜禽粪污土地承载力及粪尿替代化肥潜力分析   总被引：1，自引：0，他引：1  

郭彩霞  杨子森  马文奇  焦光月  张建杰 《农业环境科学学报》2020,39(7):1548-1557

为明确山西省畜牧业的发展规模,优化畜牧业发展的空间格局,进一步为山西省农牧业实现绿色发展提供科学依据。研究基于农牧生产系统养分平衡的方法,测算了山西省县域尺度的畜禽粪污土地承载力。结果表明,山西省的种植业与畜牧业发展规模在空间上存在一定的错位,种植业发达的地区主要分布在省域南部和中部的区县,而畜牧业发达的地区则分布在省域北部、中部和东南部的区县;山西省当前的畜牧业发展规模折合为2 371.77万猪当量,以粪尿氮作为约束指标,山西畜牧业可发展规模为5 976.01万猪当量;以粪尿磷(纯磷,下同)作为约束指标,山西畜牧业可发展规模为7 212.27万猪当量。综合粪尿氮磷承载力指数结果分析,超载区域主要分布在省域北部种植业欠发达的区县和省城太原周边的区县;全省粪尿氮、磷的有效供给量分别为18.28万t和3.15万t,可以分别有效替代氮、磷肥39.79%和33.21%。无论以粪尿氮或磷作为约束指标,山西畜牧业整体上仍有较大的发展空间,可适度增加畜禽养殖规模,但需要关注城市近郊区县的畜禽粪尿氮磷的环境排放和大中型养殖企业的点源污染问题。在畜禽粪尿养分资源管理策略上,则应考虑优化农牧业生产布局和区域间协同管理。  相似文献   

互联网+环境下饲料品牌的策划和实践     

王雯 《中国饲料》2021,(2):94-97

随着市场环境的不断发展变化,消费者越来越重视产品的品牌效益,品牌建设已成为当前饲料企业市场竞争中取胜的重要法宝,饲料企业可通过品牌策划与实践提升产品的知名度,加强企业自身的商业信誉,从而提升饲料产品的销售份额,有效扩大消费群体,为企业的长远发展提供广阔的潜力。因此,饲料企业要重视互联网+环境下品牌的策划与实践,通过优化策划方案、创新推广路径等方式加强企业品牌建设。  相似文献   

Selecting the hologenome to breed for an improved feed efficiency in pigs—A novel selection index     

Ramona Weishaar  Robin Wellmann  Amelia Camarinha-Silva  Markus Rodehutscord  Jörn Bennewitz 《Zeitschrift für Tierzüchtung und Züchtungsbiologie》2020,137(1):14-22

Most traits in animal breeding, including feed efficiency traits in pigs, are affected by many genes with small effect and have a moderately high heritability between 0.1 and 0.5, which enables efficient selection. Since the microbiota composition in the gastrointestinal tract is also partly heritable and was shown to have a substantial effect on feed efficiency, the host genes affect the phenotype not only directly by altering metabolic pathways, but also indirectly by changing the microbiota composition. The effect of the microbiota composition on the breeding value of an animal is the conditional expectation of its breeding value, given the vector with microbiota frequencies, that is The breeding value of an animal can therefore be decomposed into a heritable contribution that arises from an altered microbiota composition and a heritable contribution that arises from altered metabolic pathways within the animal, so Instead of selecting for breeding value , an index comprising the two components and with appropriate weights, that is , can be used. The present study shows how this breeding strategy can be applied in pig genomic selection breeding scheme for two feed efficiency traits and daily gain.  相似文献