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Animal Science Database

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AbstractFull Text

Despite the importance of progesterone on the fertility of lactating dairy cows, the factors that affect post ovulatory progesterone concentration are still unclear. Thus, the aim of the present study was to identify factors associated with the post ovulatory progesterone rise following 1st ...

Author(s)
Yan, L. Y.; Robinson, R. S.; Shi, Z. D.; Mann, G. E.
Publisher
South African Society of Animal Science, Hatfield, South Africa
Citation
South African Journal of Animal Science, 2018, 48, 2, pp 361-368
Abstract

In the current era of genomic selection, there is an increased demand to collect semen from genomically selected sires at a young age. The objective of this study was to assess the effect of bull age, ejaculate number, and season of collection on semen production (ejaculate volume, sperm...

Author(s)
Murphy, E. M.; Kelly, A. K.; O'Meara, C.; Eivers, B.; Lonergan, P.; Fair, S.
Publisher
Oxford University Press, Cary, USA
Citation
Journal of Animal Science, 2018, 96, 6, pp 2408-2418
Abstract

Increasing knowledge on blood profiles for bulls residing in an artificial insemination station is needed both for their high economic value and because they represent a homogeneous bovine sub-population with specific characteristics different from other categories of cattle. Therefore, the aims of ...

Author(s)
Contiero, B.; Gottardo, F.; Cassandro, M.; Bertoli, G.; Cestaro, L.; Stefani, A. L.
Publisher
Elsevier B.V., Amsterdam, Netherlands
Citation
Livestock Science, 2018, 213, pp 51-53
Abstract

Data from 96 Holstein Friesian cows on a commercial dairy farm were used to investigate whether body condition and serum levels of nonesterified fatty acids (NEFAs) postpartum (pp) affect progesterone (P4) levels, estrous activity, and fertility in dairy cows. The examination period started 14 days ...

Author(s)
Lüttgenau, J.; Purschke, S.; Tsousis, G.; Bruckmaier, R. M.; Bollwein, H.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2016, 85, 4, pp 656-663
AbstractFull Text

Dairy cattle industry plays a prominent role in Sri Lankan economy because of the very high consumption of dairy milk and dairy products. Artificial Insemination is frequently used to inculcate improved performances such as high milk yield and better adaptability to the cows. However, the accuracy...

Author(s)
Rajapaksha, P. I.; Lakmali, M. B. D.; Dunuwille, S. W. M. B.; Janaththani, P.; Rajapakse, S.; Wijayagunawardane, M. P. B.; Kodithuwakku, S. P.; Sooriyapathirana, S. D. S. S.
Publisher
Wayamba University of Sri Lanka, Kuliyapitya, Sri Lanka
Citation
Wayamba Journal of Animal Science, 2014, 6, pp 947-954
Abstract

The present study was designed to determine the effect of estradiol benzoate (EB) on reproductive response following a controlled internal drug release (CIDR) protocol in crossbred (Sahiwal × Friesian) dairy heifers. In the first trial, a total of 100 crossbred dairy heifers were treated with CIDR...

Author(s)
Mehmood, M. U.; Ahmad Qamar; Abdul Sattar; Liaquat Ahmad; Nasim Ahmad
Publisher
Springer, Amsterdam, Netherlands
Citation
Tropical Animal Health and Production, 2017, 49, 2, pp 347-351
Abstract

Estrus mucus (EM) and blood (serum) was collected from 40 apparently normal cattle (Normal breeder, NB=20; Repeat breeder, RB=20) at the time of insemination for glucose, minerals, alkaline phosphatase (ALP), lactic dehydrogenase (LDH) and α-amylase concentration. In NB cattle, serum glucose and...

Author(s)
Kadoom, A. K.; El-Henawy, M. A. A.
Publisher
Indian Society for Study of Animal Reproduction (ISSAR), Chennai, India
Citation
Indian Journal of Animal Reproduction, 2018, 39, 1, pp 31-33
Abstract

The normal time budgets of dairy cows are influenced by oestrus, with cows spending less time resting and eating but more time walking. Previous studies have shown that cows spend approximately 21% less time feeding where the day of oestrus is assumed to be the day of successful artificial ...

Author(s)
Zebari, H. M.; Rutter, S. M.; Bleach, E. C. L.
Publisher
Elsevier, Amsterdam, Netherlands
Citation
Applied Animal Behaviour Science, 2018, 206, pp 12-17
AbstractFull Text

The present study was designed to evaluate the effect of administration of lecirelin acetate, hCG and progesterone after AI on ovarian picture, serum progesterone concentrations and first service conception rate in cross-bred cattle. A total of 160 lactating cross bred (Friesian × Sahiwal) cattle...

Author(s)
Akhtar, M. S.; Saleem, M.; Ahmad, E.; Ahmad, T.; Lashari, M. H.; Ayaz, M. M.; Lodhi, L. A.; Ahmad, I.; Hussain, I.; Akhtar, M.
Publisher
College of Veterinary Medicine, University of Mosul, Mosul, Iraq
Citation
Iraqi Journal of Veterinary Sciences, 2018, 32, 2, pp 149-153
Abstract

Association between circulating progesterone and oestradiol-17β concentrations and embryonic loss in Frisian cows (n=105) under Egyptian condition was investigated. Total embryonic losses in present study were 26.4%. On d25, progesterone (P4) concentrations and sonography revealed 79.3% cows were...

Author(s)
Abu, E. H. M. A.; Kadoom, A. K.; Fouad, W. F. M.; Hassouna, S. H.
Publisher
Indian Society for Study of Animal Reproduction (ISSAR), Chennai, India
Citation
Indian Journal of Animal Reproduction, 2019, 40, 1, pp 12-15

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