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Image 8 of Kentucky farm and home science, vol. 6 No. 1 winter 1960

Part of Kentucky Agricultural Experiment Station

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The Effects Of Parasitism eyes, ivhenlthis vagietly, G1-43, wgs increased and _ , see ec in ots to c ec animal er ormance in com- —¤»- (Contmued from Page 5) _ P T 1 h 1 parison with Kentucky 31 fescue, orchard grass and ’ · · ' - . . . :¤a•·,‘ 'T 6 presfmg €> cemoflitmte quantlil brome grass, animals did not perform as well on it twsly Some O th? lll sitssts Pamslflsmfas OH Ss as on Kentucky 31. Eventually some animals grazing -,:‘* . host. Of interest is the influence which 1S exerted in CL43 fescue Showed symptoms Of toxicity Early in the Tags Ot _·¤f<¢¤¤<>; mt ready <*¤=¤g?<>Sf<=<} Fr sx 1959 the Kehttttity statthh showed that hh alcoholic t tems l¤¤SP¤¤t;<>¤k<¤=· 933>— T lshlsvs <> m sc? txtttct from this ci-4e rescue thtttge thhtttthha tt ae li *:851 Y Over 00 €3· yet most aut Cuties hdgree that toxic material. This extract was fed for 40 days to a A fl? gfcfffst Over af eioflfgmlf loss will HH as HES er dairy heifer. She developed characteristic fescue I ~· ‘ fm Sel/€T*baml m BClU?SmT iis ectsfo {fm` f00t” symptoms and died after 55 days. Neither this { P“"’° “’“t°° lm? 5 Sm b lg Y €H_§“’?f Bef mg variety nor others having more toxicity than Kentucky P“’g“‘m* ar? um Ou tcf Y emg uu 1 ef to Fgme 31 fescue will be released or recommended by the + extent by this usually undetected level of parasitism. Kentucky Station H Conclusions ,;, Tall Feseue-A Progress Report Until such time as improved varieties of fescue or A tt ”' (conumwdfmmpage 4) fescue-ryegrass hybrids are released, Kentucky 31 [`1 . . . . . fescue can continue to be useful to livestock and dair I I 5 . other commercial fescue varieties. Two varieties were _ _ " . . C,. . . production in Kentucky. In order to be of most increased in 1.108 and each variety was seeded in _ —_ . use it should be properly managed and used as a part ·"" - sod plots to be compared with orchard grass, blue- , · . . of the pasture program with other adapted grasses and ,—.t » grass, and Kentucky 31 fescue for nutritive value to _ _ yr dur lwifcrg legumes rather than used exclusively. It definitely _ ‘ t, y U . . , should be mixed with legumes. When fescue stands A`? l`he other breeding method is to cross fescue with i . . become sod-bound and choke out legumes, they should — ‘ ryegrass to secure seed. Some of these hybrids have _ . . be renovated to reintroduce legumes. been much better grazed than Kentucky 31 fescue in _ _ _ . _ . _ . . . There is apparently little question of ill effects ~ , spaced plant nurseries. These hybrids went into sod _ _ _ C _ . ( . under some conditions from grazing pure stands o. _ ’ plots in the fall of 195.) to be grazed and further · » . . Kentucky 31 fescue. Some researchers suspect poor ·_ _ evaluated for animal acceptance and agronomic char- , _ _ _ _ _ t . . . . . . blood circulation and nutrient absorption in anzmals · acteristics. Since, by using this method of breeding, “ ,, . . even before lameness or fescue foot develops. Pte- ag I hybrids with a large percentage of ryegrass germ- , _ _ _ . ' . . . . . Search is under way concerning this, and more infor- _ plasm have been secured, it is possible that the toxicity , _ _ _ _ _ _ · . . mation is definitely needed. New varieties or strains factor can be bypassed and will not be a problem in _ . _ . , . . causing harmful effects or poor performance will not · using these hybrids as a forage crop. , `1 be released or recommended by the Kentucky Agri- _‘ ¥$ New Varieties Need Testing cultural Experiment Station. Nfl! Using animals to test and select new varieties of There are still thousands of acres in Kentucky that fescue enables researcliers to check animal per- are now primarily in broomsedge and other wild I formance and nutritional value of the grass as well as growth because of low soil productivity. These acre- T agronomic qualities. For example, one naturalized ages could be much better used if sown to a mixture · ~ ` variety found growing wild in Kentucky has been of le fumes and Kentuck 31 fescue or other grasses . t I" 4 E'! y F! / I grazed consistently better than others in tests. How- where the latter are well adapted. F . `-§·°`;U l(entnt·l·i· rt-turn free il Ji; IllIk'l.llI\\l‘tl. Ser- Postal laws and Heg- nlatmns ;