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Preparation of teaser bulls and steroid implanted steers and their effectiveness in detecting estrus


, : Preparation of teaser bulls and steroid implanted steers and their effectiveness in detecting estrus. Theriogenology 6(1): 51-60

Pen-O-Blocks were easily installed in 15 bulls, Libido appeared to be unaffected. With the exception of 1 bull, infections occurred, or the penis bypassed the block, or the pin broke, and in 14 tests the Pen-O-Blocks were removed within 5 wk of installation. Recovery from infection following removal of the device was rapid and uneventful. Eight bulls had their penes deviated between 2 wk 4 mo. of age. Four of these also were castrated and implanted with androgens at 12 mo. of age. Semen quality and libido in the deviated bulls were normal. Bulls and steers were equipped with Chin Ball mating devices. Bulls generally were more effective than steers in detecting estrus. When placed in pens 24 h/day with 20 heifers each, 1 bull detected 97% and another bull detected 100% of the potential estruses during a period of 2 mo. An observer watching for .5 h each morning and each late afternoon detected 74%. While steers were less efective, they were more docile than the bulls. With selection of active animals and adjustment of hormone therapy, implanted steers may be successfu detectors of estrus with minimal danger to the owner. Reproductive development in the androgen-treated steers was delayed but maturation of the penis had occurred in steers slaughtered at 31 mo. of age. Body weight gains of steers tended to be accelerated during periods when they had implants.

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Simon A., 1984: Alkaline secretion of rabbit duodenum in vivo its dependence on acid base balance and mucosal blood flow. Allen, A (ed.). Mechanisms Of Mucosal Protection In The Upper Gastrointestinal Tract; Proceedings Of An International Conference, Manchester, England, Apr. . Xxi 392p. Raven Press: New York, N.y., Usa. Illus. P267-272

Stevens T.M.; Kerr J.S., 1987: Paraquat induction of superoxide dismutase activity in human gingival fibroblasts. Federation Proceedings 46(6): 2253

Park, J.Yong.; Park, J.Min.; Jang, J.Sung.; Choi, J.Eun.; Kim, K.Mee.; Cha, S.Ick.; Kim, C.Ho.; Kang, Y.Mo.; Lee, W.Kee.; Kam, S.; Park, R.Woon.; Kim, I.San.; Lee, J-Tae.; Jung, T.Hoon., 2006: Caspase 9 promoter polymorphisms and risk of primary lung cancer. Caspase-9 (CASP-9) is an initiator CASP in the apoptosome-driven apoptosis pathway and plays an important role in the development and progression of cancer. Polymorphisms in the promoter region of the CASP-9 gene may influence the promoter activit...

Hawkes, N.J.; Harding, H.W.J., 1985: Isoelectric focusing as an aid to the identification of Leptosphaeria narmeri, a cause of spring dead spot in turf. Extracts obtained from fungal colonies grown in nutrient broth were separated by IEF, pH 4-6.5. The protein banding patterns detected by staining with Serva Blue clearly differentiated L. narmari, L. korrae and L. maculans. Of 16 isolates from tur...

Sensenbrenner M.; Lodin Z.; Treska J.; Jacob M.; Mandel P., 1968: Morphological differentiation and biosynthesis of rna of neurons isolated in a culture. Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences Serie D Sciences Naturelles 267(20): 1660-1662

Kim, J.Yeon.; Ingrosso, C.; Fakhfouri, V.; Striccoli, M.; Agostiano, A.; Curri, M.Lucia.; Brugger, J., 2009: Inkjet-printed multicolor arrays of highly luminescent nanocrystal-based nanocomposites. Inkjet technology is a compelling method for the flexible and cost-effective printing of functional inks. We show that nanocomposite solutions based on polystyrene and differently sized core/shell-type nanocrystals (NCs) formed by a CdSe core coat...

Kosba, Z.A.; Zaied, K.A.; Hassan, R.A., 1999: Comparison between genetically constructed microorganisms for the removal of nitrite and nitrate from factory effluents. The potential of nitrite and nitrate removal and recovery from factory effluents (ammonia unit, Talkha Fertilizer Factory, Dakhlia Governorate, Egypt) using microbial biomass of yeast hybrids and bacterial transconjugants was examined. Eight yeast...

Danpure, C.J.; Cooper, P.J.; Jennings, P.R.; Wise, P.J.; Penketh, R.J.; Rodeck, C.H., 1989: Enzymatic prenatal diagnosis of primary hyperoxaluria type 1: potential and limitations. Journal of Inherited Metabolic Disease 12 Suppl 2: 286-288

Bacci, G.; Picci, P.; Ferrari, S.; Mercuri, M.; Brach del Prever, A.; Rosito, P.; Barbieri, E.; Tienghi, A.; Forni, C., 1998: Neoadjuvant chemotherapy for Ewing's sarcoma of bone: no benefit observed after adding ifosfamide and etoposide to vincristine, actinomycin, cyclophosphamide, and doxorubicin in the maintenance phase--results of two sequential studies. Ifosfamide (IF) alone or combined with etoposide (ET) was reported to be effective in the treatment of patients with Ewing's sarcoma who relapsed after treatment with the VACA regimen, which consisted of vincristine (VC), actinomycin (AC), cy...

Trofimov V.T.; Averkina T.I., 2000: Paragenetic series of engineering-geologic structures. Moscow University Geology Bulletin = Vestnik Moskovskogo Universiteta Geologiya