Conception rates in early postpartum ewes bred naturally or by intrauterine insemination   总被引：1，自引：0，他引：1  

J E Warren  D O Kiesling  M A Akinbami  E A Price  S Meredith 《Journal of animal science》1989,67(8):2056-2059

Ewes were treated with a medroxyprogesterone acetate (MAP) sponge for 8 d followed, at sponge removal, with 500 IU pregnant mare serum gonadotropin (PMSG) at d 30, 40 or 50 (d 0 = lambing) to induce estrus. Dry and lactating ewes were divided into equal numbers at each postpartum day and bred at estrus. Conception rates and number of accessory sperm were determined by flushing the oviducts 3 d after mating and examining the recovered ova. There was no effect (P greater than .05) of lactational status on conception rates. Conception rates increased (P less than .05) from d 30 (10%) to d 40 (45%) and from d 40 to d 50 (80%). There were fewer (P less than .05) ova with accessory sperm (5/26) in d-30 ewes compared with d-40 (10/27) or d-50 (12/24) ewes. In Exp. 2, ewes were assigned to two groups after receiving PMSG on d 30: 1) mated naturally or 2) inseminated during laparotomy near the uterotubal junction (UTJ). Dry and lactating ewes were divided evenly within each of the two treatments. Oviducts were flushed and ova were examined for cleavage. The conception rate was 60% in ewes that were inseminated in the UTJ vs 10% in ewes mated to rams (P less than .05). Lactational status had no effect on results. In conclusion, conception rates in postpartum ewes treated with MAP sponge and PMSG increased from postpartum d 30 to d 50 with natural breeding, and d-30 conception rates were increased over natural mating by insemination into the uterine horn near the UTJ.  相似文献   

Behavior of ewes and lambs subjected to restraint fostering     

E O Price  M Dunbar  M R Dally 《Journal of animal science》1984,58(5):1084-1089

The objective of this study was to investigate the development of maternal-filial social attachments between ewes and alien lambs using the technique of "restraint fostering." Forty-eight to 72 h after parturition, 22 Targhee -type ewes were separated from their natural lambs, placed in restraining devices ( stanchions ) and each exposed to a single alien lamb. After a period of 1 or 4 d of restraint, the ewes were subjected to five 10-min lamb acceptance tests over a 48-h period. The observer recorded butts and butt attempts by the ewe and successful and unsuccessful suckle attempts by the lamb. The ewe-lamb pairs were then housed in pens with other groups of ewes and lambs and observed intermittently for acceptance behaviors. Six of the 14 ewes restrained for 4 d and none of the eight ewes restrained for 24 h met the criterion for successful adoption within 48 h. After being housed in group pens, adoptions were achieved by three ewes in the 1-d group and an additional four ewes in the group restrained for 4 d. Ewes restrained for 24 h were significantly more aggressive toward fostered young than ewes restrained for 4 d. In addition, the proportion of successful suckling attempts was significantly lower for lambs fostered on ewes in the 1-d group. Both groups showed a decline in butts and butt attempts over successive acceptance tests, but while the proportion of successful suckling attempts declined for lambs housed with 1-d ewes, they increased over time for lambs fostered on ewes restrained for 4 d.(ABSTRACT TRUNCATED AT 250 WORDS)  相似文献   

Treatment of a strandling whale (Kogia breviceps)     

Price MC  Macdonald GJ  Graham SL  Kirk EJ 《New Zealand veterinary journal》1984,32(3):31-33

A stranded young pygmy sperm whale was nursed for four days in a pool, fed an artificial diet via a stomach tube and injected intramuscularly with antibiotics and corticosteroids. Initially unable to maintain her balance or to swim, she showed progressive improvement and by the third day could swim and dive quite strongly. Early on the fifth day her condition rapidly worsened and she died. An autopsy revealed extensive deep bruising in the head and mid-abdominal regions consistent with injuries sustained during the stranding.  相似文献   

First report of walnut canker caused by Fusarium incarnatum in Argentina     

S. Seta  M. Gonzalez  G. Lori 《Plant pathology》2004,53(2):248-248

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Canker on umbra tree caused by Fusarium sambucinum     

M. R. Carranza  G. A. Lori  S. Larran 《Plant pathology》2004,53(4):532-532

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Phrenicoabdominal venotomy for tumor thrombectomy in dogs with adrenal neoplasia and suspected vena caval invasion          下载免费PDF全文

Philipp D. Mayhew BVM&S  DACVS  William T. N. Culp VMD  DACVS  Ingrid M. Balsa DVM  Allison L. Zwingenberger DVM  MAS  DACVR  DECVDI 《Veterinary surgery : VS》2018,47(2):227-235

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Nutritional analysis and microbiological evaluation of commercially available enteral diets for cats          下载免费PDF全文

Lori R. Prantil MPS  DVM  Jessica E. Markovich DVM  DACVIM  Cailin R. Heinze VMD  MS  DACVN  Deborah E. Linder DVM  DACVN  Todd R. Tams DVM  DACVIM  Lisa M. Freeman DVM  PhD  DACVN 《Journal of Veterinary Emergency and Critical Care》2016,26(2):254-261

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Accuracy of a rapid enzyme-linked immunosorbent assay to measure progesterone in mares     

Relave F  Lefebvre RC  Beaudoin S  Price C 《The Canadian veterinary journal. La revue veterinaire canadienne》2007,48(8):823-826

The aim of this study was to validate an enzyme-linked immunosorbent assay (ELISA) for the measurement of progesterone (P4) in mares. Specifically, the objectives were as follows: (1) to determine the specificity and sensitivity of the ELISA test for determination of P4, (2) to measure the potential agreement between the 2 people performing the test, and 3) to evaluate the effect of time on the outcome. Ten mares were sampled on the day before ovulation (D-1), and on days 1 (D1), 3 (D3), and 5 (D5) following ovulation, during the reproductive season. While mares were cycling regularly, estrus was induced by the injection of 5 mg of prostaglandin (PGF2) and monitored starting on the 4th day by daily transrectal palpation and ultrasonography to determine the time of ovulation. Blood was collected and all samples (n=96) were assayed for P4 by a semiquantitative ELISA, by chemiluminescent immunoassay, and by radioimmunoassay (RIA). Based on the RIA, values of P4 on D-1, D1, D3, and D5 were significantly different (P < 0.0001) with mean and standard deviation(s) of 0.004, s = 0.52; 2.05, s = 2.58; 8.37, s = 4.17; and 12.76, s = 4.00 ng/mL respectively. The sensitivity and specificity of the semiquantitative assay were 94% and 95%, respectively for the lowest values of P4 (< 1.0 ng/mL). The value of kappa was 0.90 between 2 individuals performing the test. In conclusion, these results suggest that the semiquantitative test may be used reliably and economically to evaluate P4 levels in equine plasma in the clinical  相似文献   

Acute oral toxicity of zinc phosphide: an assessment for wild house mice (Mus musculus)     

Lyn A. HINDS  Steve HENRY  Nikki VAN DE WEYER  Freya ROBINSON  Wendy A. RUSCOE  Peter R. BROWN 《Integrative zoology》2023,18(1):63-75

Irregular plagues of house mice, Mus musculus, incur major economic impacts on agricultural production in Australia. The efficacy of zinc phosphide (ZnP), the only registered broadacre control agent for mice, is reported as increasingly variable. Have mice become less sensitive over time or are they taking a sub-lethal dose and developing aversion? In this laboratory study, the sensitivity of mice (wild caught; outbred laboratory strain) was assessed using oral gavage of a range of ZnP concentrations. The estimated LD₅₀ values (72–79 mg ZnP/kg body weight) were similar for each mouse group but are significantly higher than previously reported. The willingness of mice to consume ZnP-coated grains was determined. ZnP-coated grains (50 g ZnP/kg grain) presented in the absence of alternative food were consumed and 94% of wild mice died. Mice provided with alternative food and ZnP-coated wheat grains (either 25 or 50 g ZnP/kg grain) consumed toxic and non-toxic grains, and mortality was lower (33–55%). If a sublethal amount of ZnP-coated grain was consumed, aversion occurred, mostly when alternative food was present. The sensitivity of wild house mice to ZnP in Australia is significantly lower than previously assumed. Under laboratory conditions, ZnP-coated grains coated with a new higher dose (50 g ZnP/kg grain) were readily consumed. Consumption of toxic grain occurred when alternative food was available but was decreased. Our unambiguous findings for house mice indicate a re-assessment of the ZnP loading for baits used for control of many rodents around the world may be warranted.  相似文献   

Clinicopathologic and gastrointestinal effects of administration of prednisone,prednisone with omeprazole,or prednisone with probiotics to dogs: A double-blind randomized trial     

Mariola B. Rak  Tamberlyn D. Moyers  Joshua M. Price  Jacqueline C. Whittemore 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2023,37(2):465-475

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