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Home My WebLink AboutTimes Advocate, 1991-06-05, Page 22Page 22 Times Advocate, June 5, 1991 J14 RM 11PD A 7F Guelph develops first in vitro Iambs GUELPH - North America's first lambs conceived in vitro have touched down at the Ponsonby Re- search Station. In late April, five surrogate ewes at Ponsonby bore six lambs whose lives began unfolding as oocytes (unfertilized one -cell eggs) in the bodies of other ewes. Researchers have never before taken sheep oo- cytes from such an immature, non - ovulated state to early stage devel- opment (through fertilization, which turns them into embryos), then successfully transferred them into recipients. "This allows for a better under- standing of fertilization and embryo development," says University of Guelph veterinary science graduate student Dawn Kelk, who worked on the project with Allan King, a professor in Guelph's deparunent of biomedical sciences, and Cathy Gartley of the department of popu- lation medicine. "It brings us a step closer to prac- tical embryo transfer in sheep, says Kelk. "It bypasses many obstacles that once blocked the way." The research centred around the Beetle -proof canola .WINNIPEG - Canola and wax may be the ideal combination in the fight against the flea beetle. In their i study of plants which resist flea beetle infestations, Agriculture Canada scientists in Winnipeg have discovered that waxy leaves may be a very significant part of this re- sistance. By developing waxier varieties of canola, plant breeders may be able to win the battle against the flea beetle. recovery and development of oo- cytes from the reproductive tracts of slaughterhouse sheep. The oo- cytes were removed from the dead animals, fertilized and matured for a short period in a laboratory, then inserted into recipient ewes. Previ- ously, oocytes were removed only from live sheep. Researchers had to superovulate the donors and surgi- cally flush their oviducts to collect the oocytes. "But by being able to recover oo- cytes from slaughterhouse sheep, every ewe processed for meat is a potential source of oocytes for pro- ducing embryos for either transfer or research," says King. "As well, it reduces our need to maintain ani- mals for research." The success of the project means that researchers have learned how to consistently mature sheep em- bryos in vitro. In the University of Guelph's animal biotechnology em- bryo lab, the oocytes were fertilized with semen collected form rams at Untied Breeders Inc., cultured in vitro under special conditions for five days, then transferred to the uterus of a recipient or surrogate ewe. The key to this portion of the pro- ject is the extended in vitro viabili- ty of the embryos. Previous in vitro fertilization and embryo transfer in sheep required surgical implanta- tion and subsequent collection from the oviducts of temporary surrogate animals such as rabbits, because re- searchers lacked the technology to mature oocytes in the lab for more than a day or two. That's when oo- cytes reach the eight -call stage and start surviving on their own genetic material, switching form that pro- vided initially by their mothers. But drawing on knowledge ac- quired from the embryo lab's exper- tise with cattle embryo develop- -There is a difference - ask, me - More farmers are switching to John Deere haying equipment for very good reasons Sales Rep. Paul Van Oss, Res. 235-3147 meet, the researchers can now develop the oocytes further by em- ulating conditions in the oviduct. Central to this breakthrough is the use of a culture medium containing cells from the slaughterhouse ani- mals' oviducts, which fosters and maintains the development of the embryos for up to one week. "This allows the researchers time to make significant observations about embryo growth and enables the embryo to develop sufficiently so as to greatly enhance transplant potential," says Kelk. One of the project's long-term goals is to make sheep a more ac- Rebuild Your Hoe cessible alternative species for farmers, says King. Improving the genetic quality of sheep flocks is an important step in this process, he says. It will open the way for screen- ing the carriers of genetic defects. The entire sheep population and in- dustry can benefit from such selec- tion." This research is sponsored by the Natural Sciences and Engineering Research Council, Agriculture Can- ada, the Canadian Association of Animal Breeders and the Universi- ty of Guelph's research enhance- ment fund. ROTARY HOE OWNERS Ontario to participate in NISA At TORONTO - Ontario will partici- pate in the federal -provincial Net Income Stabilization Account (NISA), Minister of Agriculture and Food Elmer Buchanan an- nounced Thursday. The province's financial contributions will be phased in starting in the program's second year. Ontario producers can sign up for NISA for the 1990 tax year, and. they will receive provincial contri- butions next year. "I'm pleased to let Ontario grain, oilseed and horticultural producers know that the province is commit- ted to full participation in the Net Income Stabilization Account for the 1992 tax year," Buchanan said. This phase-in approach is similar to what is being held in Nova Sco- tia, Prince Edward Island and Man- itoba. Ontario's participation in the pro- gram follows negotiations with the federal government, during which the province pushed for environ- mental cross -compliance require- ments and income caps. These ne- gotiations are ongoing and details will be discussed with the Ontario farming community. "Ontario's decision to phase into the NISA program is in addition to our commitment to the Gross Reve- nue Insurance Plan (GRIP) and the province's $50 -million 1991 Farm Interest Assistance Program," Bu- chanan said. "Producers enrolled in NISA will be able to accumulate funds during 1 •years wile% IPTIP.AIWKs are good, i so theYeWtll,,hayq, these accou 'ts .. available to supplement their - N, comes when returns are down. n providing individual producers with income stability, we are also strengthening our rural communi- ties," said Bucahanan. Under NISA, individual produc- ers can put up to two percent of their net sales of eligible agricultu- ral commodities into an account. The contribution will be matched by a combination of federal and provincial government funds; the provincial funds will begin next year. . (Net sales are defined as gross sales, Less purchases of all agricul- tural commodities and commodity related payments reported as farm- ing income). NISA is designed to provide long-term income stability to its participants. Producers will have access to this account when the farm's gross margin falls below its five-year average or the individu- al's net income falls below Sales HUR011.Exeter 225-1115n TRACTOR 1800-2654220 Thank You $10,000. The maximum level of net sales on which contributions can be made is $250,000 per year. Pro- ducers will also be permitted to contribute an additional 20 percent of net sales into their NISA ac- counts, but these funds would not be matched by either government. Grain, oilseed and eligible horti- cultural producers will be receiv- ing NISA contribution/wtihdrawal forms by mail. These producers are asked to contact Agriculture Canada - responsible for the na- tional administration of the pro- gram - with any further questions regarding NISA, at 1-800-665- NBISA Grain and oilseed produc- ers who sign up this year will re- ceive a special signing bonus. Complete Replacement Wheels For: Yetter, John Deere Single Wheels $25 25 90ea. Askaboutour Quality Discount HYDE BROS c Farm Equipment Ltd. Hensall 262-2605 Ask for Terry, Joe or Bob We're your low overhead - fair priced dealer, with a genuine commitment to fulfill your exact equipment Barry Goon ' •BASF.Sales RepreserttMtfve- Mobile # (519) 661-9201 Agrichemicals for a growing world NEW Basagran® Plus WIDER BROADLEAF control includes REDROOT PIGWEED For more information about Basagran Plus, contact your local cat 4.0 BASF registered user. Agricultural Chemicals -, .p nr E°?o11,V rf)tt 4 III' m►�ml»�Illlllllllll r This is our First Anniversary in our Exeter Location. Join us for coffee. 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