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Animal Science Database

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Abstract

Fertility traits were recently added to the evaluation of genetic merit, allowing for the selection of Holstein cattle with improved reproductive performance. In the current study, we investigated the associations among genomic merit for daughter pregnancy rate (GDPR) and heifer conception rate...

Author(s)
Veronese, A.; Marques, O.; Peñagaricano, F.; Bisinotto, R. S.; Pohler, K. G.; Bilby, T. R.; Chebel, R. C.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2019, 102, 7, pp 6639-6648
Abstract

The aim of the present study was to predict pregnancy rate based on vascularization to follicle and corpus luteum (CL). 26 Holstein Friesian cows were synchronized using Ovsynch protocol. On day 10 of the protocol, vascularization and morphological characteristics [sectional area (SA), volume (V)...

Author(s)
Varughese, E. E.; Brar, P. S.; Ghuman, S. S.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2017, 103, pp 59-68
Abstract

This study was conducted to test the efficacy of gonadotropic hormone (GnRH)-based synchronization protocols (Ovsynch, Heatsynch, and Ovsynch Plus) in buffaloes under field condition. Based on anamnesis and transrectal palpation twice at 10-day interval and serum progesterone (P4) concentration,...

Author(s)
Rathore, R.; Sharma, R. K.; Phulia, S. K.; Mudgal, V.; Jerome, A.; Ghuman, S. P. S.; Singh, I.
Publisher
Springer, Amsterdam, Netherlands
Citation
Tropical Animal Health and Production, 2017, 49, 7, pp 1377-1382
Abstract

Twelve lactating Murrah buffalo, divided into control and treatment group of six animals each, were used to study the effect of melatonin and controlled internal drug release (CIDR) device treatment on the resumption of ovarian activity during out-of-breeding season (summer solstice). Treated group ...

Author(s)
Ramadan, T. A.; Sharma, R. K.; Phulia, S. K.; Balhara, A. K.; Ghuman, S. S.; Singh, I.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2016, 86, 4, pp 1048-1053
Abstract

This study was designed to investigate the impact of buserelin acetate (BA) or human chorionic gonadotropin (hCG) administration on the day of first artificial insemination (AI) on subsequent luteal profile (diameter of corpus luteum (CL) and plasma progesterone) and conception rate in Murrah...

Author(s)
Pandey, A. K.; Ghuman, S. P. S.; Dhaliwal, G. S.; Agarwal, S. K.; Phogat, J. B.
Publisher
Wiley-Blackwell, Berlin, Germany
Citation
Reproduction in Domestic Animals, 2016, 51, 4, pp 478-484
Abstract

Effects of phytoestrogen isoflavones in Berseem clover on hormonal balance during early pregnancy and fertility of heifers were studied. Holstein heifers (n=26) were divided into two equal homogenous groups. Heifers in the first group (Clover-fed group) were fed Egyptian clover (Trifolium...

Author(s)
Hashem, N. M.; El-Azrak, K. M.; Sallam, S. M. A.
Publisher
Elsevier B. V., Amsterdam, Netherlands
Citation
Animal Reproduction Science, 2016, 170, pp 121-127
Abstract

The objectives were to determine the effects of supplemental fat (no oilseed vs. oilseed) during late gestation and the source of fat (canola vs. sunflower seed), on dry matter intake (DMI), plasma metabolite concentrations, milk production and composition, calf birth weight, postpartum health...

Author(s)
Salehi, R.; Colazo, M. G.; Oba, M.; Ambrose, D. J.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2016, 99, 5, pp 3584-3597
Abstract

Two studies were designed to determine (1) the effects of Heatsynch and Ovsynch protocols versus spontaneous ovulation and (2) the effects of calving problems, clinical uterine infections, and clinical mastitis on the size of the ovulatory follicle, conception rate, and embryonic/fetal (E/F) death...

Author(s)
Mokhtari, A.; Kafi, M.; Zamiri, M. J.; Akbari, R.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2016, 85, 4, pp 747-753
Abstract

Primiparous and multiparous suckled Bos indicus × Bos taurus cows were used to compare a Select Synch + controlled internal drug release (CIDR) and timed artificial insemination (AI) protocol (SSC) to a modified CO-Synch + CIDR protocol (COS). Five separate groups of cows were utilized (n=659) and...

Author(s)
Esterman, R. D.; Alava, E. N.; Austin, B. R.; Hersom, M. J.; Yelich, J. V.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2016, 85, 5, pp 870-876
Abstract

The role of melatonin as a protective neurohormone against restoring cyclicity in summer anoestrous animals in photoperiod species has gained wider acceptance. This study was designed to uncover the evidence the slow-release melatonin (MLT) has on initiation of ovarian cyclicity and conception rate ...

Author(s)
Kumar, A.; Mehrotra, S.; Singh, G.; Maurya, V. P.; Narayanan, K.; Mahla, A. S.; Chaudhari, R. K.; Singh, M.; Soni, Y. K.; Kumawat, B. L.; Dabas, S. K.; Srivastava, N.
Publisher
Wiley-Blackwell, Berlin, Germany
Citation
Reproduction in Domestic Animals, 2016, 51, 1, pp 10-17

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