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You searched for: Journal Theriogenology Remove constraint Journal: Theriogenology Publication Year 2016 Remove constraint Publication Year: 2016 Source 2016 v.86 no.2 Remove constraint Source: 2016 v.86 no.2
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21. Sperm membrane integrity in fresh and frozen–thawed canine semen samples: a comparison of vital stains with the NucleoCounter SP-100

Author:
Daub, L.; Geyer, A.; Reese, S.; Braun, J.; Otzdorff, C.
Source:
Theriogenology 2016 v.86 no.2 pp. 651-656
ISSN:
0093-691X
Subject:
dogs; fluorescence; fluorescent dyes; microscopy; propidium; semen; sperm concentration; spermatozoa; staining; statistical analysis; viability
Abstract:
... The objective of this study was to assess sperm membrane integrity in canine semen samples using three different vital stains and the NucleoCounter SP-100 (NC). In addition, the occurrence of half-stained sperm heads, the influence of investigator, and storage-related artifacts using stained smears were examined. Forty fresh (30 dogs) and 40 frozen–thawed (28 dogs) canine semen samples were analyz ...
DOI:
10.1016/j.theriogenology.2016.02.021

22. Surgical castration but not immuncastration is associated with reduced hypothalamic GnIH and GHRH/GH/IGF-I axis function in male rats

Author:
Han, Xingfa; Li, Junli; Cao, Xiaohan; Du, Xiaogang; Meng, Fengyan; Zeng, Xianyin
Source:
Theriogenology 2016 v.86 no.2 pp. 657-665
ISSN:
0093-691X
Subject:
adjuvants; blood sampling; blood serum; castration; feed conversion; growth performance; growth regulators; insulin-like growth factor I; liver; males; messenger RNA; ovalbumin; rats; somatoliberin; somatotropin; urea nitrogen; weight gain
Abstract:
... Gonadotropin-inhibitory hormone (GnIH) is a potent positive regulator of the growth axis. The present study was aimed to comparatively investigate the effects of surgical and immunologic castration on hypothalamic GnIH expression and endocrine function of the growth axis. Thirty-six prepubertal male rats were randomly allocated into three groups (n = 12): control, surgically castrated or immunized ...
DOI:
10.1016/j.theriogenology.2016.02.020

23. The effect of cooling management on blood flow to the dominant follicle and estrous cycle length at heat stress

Author:
Honig, Hen; Ofer, Lior; Kaim, Moshe; Jacobi, Shamay; Shinder, Dima; Gershon, Eran
Source:
Theriogenology 2016 v.86 no.2 pp. 626-634
ISSN:
0093-691X
Subject:
animal ovaries; blood flow; blood volume; cooling; dairy cows; estrous cycle; follicular development; heat stress; ovulation; progesterone; summer; ultrasonography
Abstract:
... The use of ultrasound imaging for the examination of reproductive organs has contributed substantially to the fertility management of dairy cows around the world. This method has many advantages such as noninvasiveness and immediate availability of information. Adding Doppler index to the ultrasound imaging examination, improved the estimation of blood volume and flow rate to the ovaries in genera ...
DOI:
10.1016/j.theriogenology.2016.02.017

24. The effects of kisspeptin agonist canine KP-10 and kisspeptin antagonist p271 on plasma LH concentrations during different stages of the estrous cycle and anestrus in the bitch

Author:
Albers-Wolthers, C.H.J.; de Gier, J.; Rutten, V.P.M.G.; van Kooten, P.J.S.; Leegwater, P.A.J.; Schaefers-Okkens, A.C.; Kooistra, H.S.
Source:
Theriogenology 2016 v.86 no.2 pp. 589-595
ISSN:
0093-691X
Subject:
Beagle; adults; agonists; anestrus; antagonists; bitches; body weight; contraception; estrus; gonadotropin-releasing hormone; intravenous injection; luteinizing hormone
Abstract:
... Kisspeptin (KP) plays a key role in the regulation of the hypothalamic-pituitary-gonadal axis via the release of GnRH. As normal KP signaling is essential for reproductive function, it could be an interesting new target for therapeutic interventions, e.g., nonsurgical contraception in dogs. The aims of the present study were to investigate the effect of KP-10 administration on plasma LH concentrat ...
DOI:
10.1016/j.theriogenology.2016.02.009