Search Results - "Beal, W.E."

The evaluation of corpus luteum blood flow using color-flow Doppler ultrasound for early pregnancy diagnosis in bovine embryo recipients by Utt, M.D., Johnson, G.L., Beal, W.E.

“…The objective of this experiment was to evaluate corpus luteum blood flow (CLBF) as an early indicator of pregnancy status in bovine embryo recipients. Fifty…”
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Effect of a CIDR insert and flunixin meglumine, administered at the time of embryo transfer, on pregnancy rate and resynchronization of estrus in beef cattle by Purcell, S.H., Beal, W.E., Gray, K.R.

“…The objectives of this study were to evaluate the effects of flunixin meglumine (FM), an inhibitor of PGF 2α synthesis, and insertion of an intravaginal…”
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Application of knowledge about corpus luteum function in control of estrus and ovulation in cattle by Beal, W.E.

“…Understanding corpus luteum (CL) function has led to development of methods of estrus synchronization in cattle that either extend the estrous cycle by…”
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Reproductive responses of beef heifers after concurrent administration of vaccines, anthelmintic and progestogen by Stormshak, F., Tucker, C.M., Beal, W.E., Corah, L.R.

“…A study was conducted to determine whether concurrent administration of vaccines for reproductive diseases and an anthelmintic, given immediately prior to…”
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Prostaglandin F2α and naloxone therapy in the anestrous postpartum beef cow by Jaeger, J.R., Olson, K.C., Corah, L.R., Beal, W.E.

“…Three experiments were conducted, using multiparous crossbred beef cows, to test the ability of exogenous prostaglandin F2α (PGF) and/or naloxone to reduce the…”
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Evaluating recipient and embryo factors that affect pregnancy rates of embryo transfer in beef cattle by Spell, A.R., Beal, W.E., Corah, L.R., Lamb, G.C.

“…The objectives of this experiment were to determine the effects of corpus luteum characteristics, progesterone concentration, donor-recipient synchrony, embryo…”
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Expression of growth hormone receptor 1A mRNA is decreased in dairy cows but not in beef cows at parturition by Jiang, H, Lucy, M C, Crooker, B A, Beal, W E

“…The promoter controlling expression of a major bovine growth hormone (GH) receptor (GHR) mRNA variant, GHR 1A, contains a common DNA element for transcription…”
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Milk protein secretion by explants of prepubertal bull mammary tissue: breed differences by McFadden, T B, Akers, R M, Beal, W E

“…Production of milk proteins in response to hormonal stimuli was studied in organ culture of mammary tissue from prepubertal Angus or Holstein bulls. Bulls were…”
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effects of varying the interval from follicular wave emergence to progestin withdrawal on follicular dynamics and the synchrony of estrus in beef cattle by Utt, M.D, Jousan, F.D, Beal, W.E

“…The objective of this experiment was to examine the effects of varying the interval from follicular wave emergence to progestin (controlled internal…”
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Evaluating embryo freezing method and the site of embryo deposition on pregnancy rate in bovine embryo transfer by Beal, W.E., Hinshaw, R.H., Whitman, S.S.

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Effects of varying the holding temperature and interval from collection to freezing on post-thaw development of bovine embryos in vitro by Jousan, F.D, Utt, M.D, Whitman, S.S, Hinshaw, R.H, Beal, W.E

“…The objective of this study was to evaluate the in vitro development of frozen–thawed bovine embryos held at room temperature or refrigerated for 2, 6 or 12 h…”
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Techniques for estimation of milk yield in beef cows and relationships of milk yield to calf weight gain and postpartum reproduction by Beal, W.E. (Virginia Polytechnic Institute and State University, Blacksburg), Notter, D.R, Akers, R.M

“…Milk production is a primary factor controlling weaning weight of beef calves. The purpose of this experiment was to develop a practical and reliable on-farm…”
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Endocrine changes and ultrasonography of ovaries in suckled beef cows during resumption of postpartum estrous cycles by Perry, R.C. (California State University, Fresno, CA), Corah, L.R, Kiracofe, G.H, Stevenson, J.S, Beal, W.E

“…Changes in follicular and luteal structures were assessed and concentrations of estradiol and progesterone were measured in 13 Hereford X Angus suckled beef…”
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Application of knowledge about corpus luteum function in control of estrous and ovulation in cattle by Beal, W.E. (Virginia Polytechnic Institute and State University, Blacksburg, VA.)

“…Understanding corpus luteum (CL) function has led to development of methods of estrus synchronization in cattle that either extend the estrous cycle by…”
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use of ultrasound in monitoring reproductive physiology of beef cattle by Beal, W.E, Perry, R.C, Corah, L.R

“…Real-time, B-mode ultrasonography provides the opportunity to improve the methods of evaluation of ovarian function and diagnoses of pregnancy in beef cattle…”
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Effect of melengestrol acetate (MGA) or progesterone-releasing intravaginal device (PRID) on follicular development, concentrations of estradiol-17 beta and progesterone, and luteinizing hormone release during an artificially lengthened bovine estrous cycle by Custer, E.E, Beal, W.E, Wilson, S.J, Meadows, A.W, Berardinelli, J.G, Adair, R

“…Two trials were conducted to determine whether 7-d progestogen treatment beginning on d 17 of the estrous cycle altered ovarian follicular development, serum…”
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Relationship between milk expected progeny differences of polled Hereford sires and actual milk production of their crossbred daughters by Diaz, C. (Virginia Polytechnic Institute and State University, Blacksburg), Notter, D.R, Beal, W.E

“…One hundred sixteen spring-calving Polled Hereford X Angus cows were milked using milking machines after receiving 20 IU of oxytocin. Sires of the cows had…”
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Morphometric analysis of involuting bovine mammary tissue after 21 or 42 days on non-suckling by Akers, R.M. (Virginia Polytechnic Institute and State University, Blacksburg), Beal, W.E, McFadden, T.B, Capuco, A.V

“…Mammary gland involution was morphologically evaluated 21 or 42 d after prevention of suckling of one udder half in 10 crossbred beef cows. Parenchymal tissue…”
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Body measurements of newborn calves and relationship of calf shape to sire breeding values for birth weight and calving ease by Nugent, R.A. III (Roman L. Hruska U.S. Meat Animal Res. Center, ARS, USDA, Clay Center, NE), Notter, D.R, Beal, W.E

“…Body measurements on Angus- (n = 374) and Polled Hereford-sired (n = 438) calves were used to quantify calf shape via multivariate factor analysis, and…”
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Influence of breed and hormones on production of milk proteins by mammary explants from prepubertal heifers by McFadden, T B, Akers, R M, Beal, W E

“…Effects of hormone treatment and breed on lactogenic responses were studied in organ culture of mammary tissue obtained from prepubertal Angus or Holstein…”
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