Delivering improved fertility and sperm storage solutions for salmon aquaculture

GSTDTAP

项目编号	NE/P010881/1
	Delivering improved fertility and sperm storage solutions for salmon aquaculture
	[unavailable]
主持机构	University of East Anglia
项目开始年	2016
	2016-10-01
项目结束日期	2018-03-31
资助机构	UK-NERC
项目类别	Research Grant
国家	英国
语种	英语
英文摘要	AIMS OBJECTIVES AND ACTIVITIES: Salmon farming has achieved major growth and success over a short period, but global demands mean that aquaculture will need to play a vital role in supplying animal protein to a fast-growing human population (World Bank 2014). Two overlapping bottlenecks currently limit progress in salmon aquaculture: (1) the ability to realise consistently high levels of fertility through artificial in vitro fertilisation, and (2) the ability to reliably store sperm both within and between spawning seasons. Fortunately, a very large body of research knowledge exists on reproduction, fertilisation, and sperm storage and cryopreservation in salmonids, which we will translate through this innovation project into practices that meet the specific needs of salmon aquaculture for improved breeding and stock enhancement. PROJECT PARTNERS AND AQUACULTURE CHALLENGES: Alastair Hamilton and his team at Landcatch Natural Selection Ltd will work with Matt Gage (UEA), combining practical expertise from industry with scientific knowledge and skills. Breeding and stock enhancements within salmon aquaculture have so far focused (successfully) on improvements in growth, feed conversion and disease resistance. However, it is essential at this early stage in salmon farming that we do not neglect challenges from fundamental reproductive biology, which must be carefully managed through the domestication process as new strains and processes are developed. Broodstock fertility already presents significant constraints on progress in salmon aquaculture, and this should be guarded against into the future. Fertility that is often below 50% currently limits productivity into the farm stage by reducing the number of eyed eggs and fry that can be generated for the grow-on stages to market. Low fertility also significantly constrains the ability to replicate cross-strain breeding selection and stock improvements. In addition to fertility limitations, ineffective sperm storage solutions place major breeding barriers on stock enhancement. Short-term (days to weeks) sperm storage using extenders and chilling can be implemented on the farm that researchers have used to achieve fertility up to 33 days from strip. Longer-term cryo-storage has a detailed history of investigation in fish, especially salmon, and methods are now developed that should allow reliable storage over years. Translating established knowledge and technology into farm salmon sperm storage solutions will transform aquaculture's ability to select for farm-friendly traits and enhance stocks, especially with the availability of modern genomic selection. DELIVERABLES AND OUTPUTS: The project will deliver better fertility and sperm storage solutions, immediately benefiting farm productivity, and transforming the ability to select for and diversify optimal aquaculture traits. The outputs will be technical reports and demonstrations of work practice that detail how improvements in fertility and sperm storage can be applied on the farm, disseminated direct to Landcatch through Dr Alastair Hamilton and his team. The reports will be evolved and optimised under discussion between the team members so that the farm practicality perspective is prioritised, allowing successful implementation of change among farm processes and workers directly as a result of successful Knowledge Exchange. Ultimately, reports will be published in peer-reviewed international impact journals, and disseminated at the European Aquaculture Society annual meeting in Croatia '17. Peer-reviewed outputs will be produced in rapid-publication journals with relevance to the aquaculture industry; we anticipate four papers: two describing improvements in sperm recovery, handling, analysis and fertilization, and two on short-term and long-term sperm storage solutions. PROJECT DURATION: 18 months, to encompass two spawning seasons and to allow 6-12 month testing of cryopreservation. TOTAL COST: £185k (80% FEC)
来源学科分类	Natural Environment Research
文献类型	项目
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/86489
专题	环境与发展全球科技态势
推荐引用方式 GB/T 7714	[unavailable].Delivering improved fertility and sperm storage solutions for salmon aquaculture.2016.