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Animal Science Database

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Abstract

To understand farmers' preference and perceptions of breed attributes, breeding and feeding practices, 419 households in western Kenya were interviewed in a cross-sectional survey. Respondents scored their preference for cattle breeds, traits and breeding methods on a scale of 1 (most preferred) to ...

Author(s)
Lukuyu, M. N.; Gibson, J. P.; Savage, D. B.; Rao, E. J. O.; Ndiwa, N.; Duncan, A. J.
Publisher
NISC - Taylor & Francis, Grahamstown, South Africa
Citation
East African Agricultural and Forestry Journal, 2019, 83, 4, pp 351-367
AbstractFull Text

In our previous Genome-wise Association Study we found that Cystic Fibrosis Transmembrane Conductance Regulator gene (CFTR) is a candidate gene for sperm motility in fresh semen of Holstein-Friesian bulls. Since in cows thawed semen is commonly used for the artificial insemination (AI) we have...

Author(s)
Kaminski, S.; Hering, D. M.; Kordan, W.; Lecewicz, M.
Publisher
Polish Academy of Sciences, Committee of Veterinary Sciences, Olsztyn-Kortowo II, Poland
Citation
Polish Journal of Veterinary Sciences, 2019, 22, 2, pp 221-225
Abstract

Large percentages of dairy cows do not express behavioural signs of oestrus. Faecal and urine fatty acid concentrations increase during oestrus. The objective of the present study was to determine the milk FA profile of dairy cows during the oestrous and dioestrous periods and the relationship with ...

Author(s)
Zebari, H. M.; Rutter, S. M.; Bleach, E. C. L.
Publisher
Elsevier B.V., Amsterdam, Netherlands
Citation
Animal Reproduction Science, 2019, 202, pp 26-34
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

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

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

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

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

The objective of the study was to evaluate the effect of prepartum and postpartum (PP) supplementation with 2 isomers of conjugated linoleic acid (CLA) on reproductive parameters and some related metabolic factors in dairy cows. High-producing, multiparous Holstein Friesian cows (n=60) were...

Author(s)
Csillik, Z.; Faigl, V.; Keresztes, M.; Galamb, E.; Hammon, H. M.; Tröscher, A.; Fébel, H.; Kulcsár, M.; Husvéth, F.; Huszenicza, Gy.; Butler, W. R.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2017, 100, 7, pp 5888-5898
Abstract

Interferon-tau (IFNτ) is the conceptus derived specific early pregnancy signal in bovidae. Locally, IFNτ induces an IFNτ specific gene expression (ISG) in endometrial cells and by this it averts luteolysis of the corpus luteum (CL) by suppressing prostaglandin production. Moreover, it was shown...

Author(s)
Ruhmann, B.; Giller, K.; Hankele, A. K.; Ulbrich, S. E.; Schmicke, M.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2017, 104, pp 198-204

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