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Effects of the fungal endophyte Acremonium coenophialum in fescue on pregnant mares and foal viability.
1991
Putnam M.R. | Bransby I. | Schumacher J. | Boosinger T.R. | Bush L. | Shelby R.A. | Vaughan J.T. | Ball D. | Brendemuehl J.P.
Effects of the endophyte Acremonium coenophialum in tall fescue on pregnant mares and foal viability were evaluated. Twenty-two mature pregnant mares were randomly chosen to graze either Kentucky-31 tall fescue that was free from A coenophialum (endophyte-free, EF) or tall fescue infected with A coenophialum (endophyte-present, EP) after the first 90 days of pregnancy through parturition. Concentrations of pyrrolizidine and ergopeptine alkaloids were significantly greater in EP grass, compared with EF pasture. Ten of 11 mares grazing EP pasture had obvious dystocia. Mean duration of gestation was significantly greater for the EP group, compared with the EF group. Foal survivability was severely reduced among mares grazing Ep fescue with only 1 foal surviving the natal period. Udder development and lactation were low in mares grazing EP grass. The absence of clinical problems in mares grazing EF grass implicated the endophyte as the causative agent of reproductive problems and perinatal foal mortality in pregnant mares grazing endophyte-infected fescue grass. Caution should be exercised in allowing pregnant mares to graze pastures infected with the endophyte A coenophialum.
Show more [+] Less [-]Administration of ethylenethiourea during organogenesis periods in pregnant rats., 1; Effects on teratogenic effects, amino acids and protein concentrations in amniotic fluids
1991
Kim, S.H. (Korea Research Inst. of Chemical Technology, Seoul (Korea Republic)) | Huh, R.S. (Kyungpook National Univ., Taegu (Korea Republic). Coll. of Veterinary Medicine)
Administration of ethylenethiourea during organogenesis periods in pregnant rats, 2; Effects on water filled multiple T-maze test and alpha-fetoprotein, urea and free fatty acid concentrations in amniotic fluids
1991
Kim, S.H. (Korea Research Inst. of Chemical Technology, Seoul (Korea Republic)) | Huh, R.S. (Kyungpook National Univ., Taegu (Korea Republic). Dept. of Veterinary Medicine)
A study on production of early pregnancy diagnostic kid in cattle, 2; Production of early pregnancy diagnostic kit.
1991
Kang, C.B. | Lee, H.J. | Choe, S.Y. (Gyeongsang National Univ., Chinju (Korea Republic). Coll. of Veterinary Medicine)
A study on production of early pregnancy diagnostic kit in cattle, 1; Production of polyclonal antibody to progesterone and removal of anti-bovine serum albumin antisera
1991
Kang, C.B. | Lee, H.J. | Choe, S.Y. (Gyeongsang National Univ., Chinju (Korea Republic). Coll. of Veterinary Medicine)
Studies on the plasma progesterone concentrations for pregnancy diagnosis in Cheju native mare
1991
Chang, D.J. (Cheju Vocational Junior Coll., Cheju (Korea Republic)) | Yang, K.C. | Kim, J.K. (Cheju National Univ., Cheju (Korea Republic). Coll. of Agriculture) | Kang, B.K. | Choi, H.S. | Son, C.H. (Chonnam National Univ., Kwangju (Korea Republic). Coll. of Veterinary Medicine)
