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Результаты 261-270 из 281
Production, purification, and characterization of avian mycoplasmas.
1975
Yoder H.W. Jr.
Infectious bursal disease virus: antigen production and immunity [Chickens].
1975
Lukert P.D. | Leonard J. | Davis R.B.
Potential for polyvalent infectious bronchitis vaccines [Chickens].
1975
Winterfield R.W. | Fadly A.M.
Comments on the etiology and immunity of transmissible (coronaviral) enteritis of turkeys (bluecomb).
1975
King D.J.
Immunity to transmissible (coronaviral) enteritis of turkeys (bluecomb).
1975
Pomeroy B.S. | Larsen C.T. | Deshmukh D.R. | Patel B.L.
Detection of activity for various anthelmintics against in vitro-produced Cooperia punctata [Bovine gastrointestinal nematode].
1975
Leland S.E. Jr. | Ridley R.K. | Slonka G.F. | Zimmerman G.L.
Ervaringen met de operatieve behandeling van de lebmaagdislocatie naar rechts en de lebmaagtorsie bij het rund.
1975
Velden M.A. van der
Induction of fescue foot syndrome in cattle by fractionated extracts of toxic fescue hay
1975
Williams, M. | Shaffer, S.R. | Garner, G.B. | Yates, S.G. | Tookey, H.L. | Kintner, L.D. | Nelson, S.L. | McGinity, J.T.
Tall fescue (Festuca arundinacea Shreb) hay from a source known to cause "fescue foot" in grazing cattle was extracted with 80% ethanol. The ethanolic extract was further refined and fractionated into cation,nion, and neutral f fractions by ion-exchange chromatography. The cation fraction was partitioned with alkaline-chloroform to give chloroform-extractable cation and residual cation fractions. All fractions plus the crude ethanolic extract were assayed for toxic activity by intraperitoneal injection into 12 calves (weighting 152.4 to 241.3 kg each) over a 14-day period. Clinical signs of fescue foot were observed on the 5th day in calves given the anion and crude ethanolic extracts. Lameness, swelling, and reddening of the rear coronary bands, discoloration of the tip of the tail, and other signs of fescue foot were seen. Microscopically, coronary bands and tail tips of affected calves had blood vessels with thick walls and small lumens.
Показать больше [+] Меньше [-]Incidence of helminth parasites in shrew moles
1975
Ohbayashi, M. (Hokkaido Univ., Sapporo (Japan). Faculty of Veterinary Medicine)
Fine structures of corpus paracloacalis vascularis in cocks
1975
Sugimura, M. | Kudo, N. | Yamano, S. (Hokkaido Univ., Sapporo (Japan). Faculty of Veterinary Medicine)
