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Skip to Search Results- 12Ametaj, Burim N.
- 9Ambrose, Divakar J.
- 7Dunn, Suzanna M.
- 6Zebeli, Qendrim
- 4Iqbal, Summera
- 3Dervishi, Elda
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A prepartum diet supplemented with oilseeds high in oleic or linoleic acid reduced GnRH-induced LH release in dairy cows during second week postpartum
Download2015
Ambrose, Divakar J., Salehi, Reza, Oba, Masahito, Colazo, Marcos G.
Background The objective was to determine the effect of prepartum diets supplemented with rolled canola seed (high in oleic acid) or sunflower seed (high in linoleic acid) on luteinizing hormone (LH) pulsatility and gonadotropin releasing hormone (GnRH)-induced LH release during early postpartum....
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A simple procedure to secure an indwelling jugular vein catheter to the neck of cattle for repeated blood sampling
Download2001
MacLean, Melissa A., Zalkovic, Pavol, Ambrose, Divakar J.
Abstract A procedure to secure a jugular vein catheter system to the neck of cattle is described. A wide-mouthed polypropylene bottle attached to a halter strap provided a secure container for the catheter. This device allowed convenient access to the catheter for repeated sampling and,...
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Alterations of innate immunity reactants in transition dairy cows before clinical signs of lameness
Download2015
Dervishi, Elda, Hailemariam, Dagnachew, Zhang, Guanshi, Goldansaz, Seyed A., Deng, Qilan, Dunn, Suzanna M., Ametaj, Burim N.
The objectives of this study were to evaluate metabolic and innate immunity alterations in the blood of transition dairy cows before, during, and after diagnosis of lameness during periparturient period. Blood samples were collected from the coccygeal vain once per week before morning feeding...
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Characterisation of bacterial microbiota of the vagina of dairy cows and isolation of pediocin-producing Pediococcus acidilactici
Download2013
Wang, Yvonne, Ambrose, Divakar J., Ametaj, Burim N., Gänzle, Michael G.
Background Uterine infections in dairy cows lower profitability of dairy operations. Infections of the reproductive tract are related to the overgrowth of pathogenic bacteria during the first three weeks after parturition. However, alterations in the vaginal microbiota composition in the first...
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Clinical and research applications of real-time ultrasonography in bovine reproduction: A review
Download1994
Ambrose, Divakar J., Burton, Bruce, Rajamahendran, Rajadurai
Transrectal real-time ultrasonography has proved to be a rapid and reliable technique for studying reproductive functions in cattle. Through ultrasonography it is now established that follicular growth occurs in wave-like patterns during each estrous cycle. It has been shown that follicular...
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Comparison of 2 enzyme immunoassays and a radioimmunoassay for measurement of progesterone concentrations in bovine plasma, skim milk, and whole milk
Download2008
Kastelic, John P., Small, Julie A., Ambrose, Divakar J., Colazo, Marcos G.
The objective of this study was to compare 2 enzyme immunoassays (EIAs) with a radioimmunoassay (RIA) as to sensitivity and accuracy in the measurement of the progesterone (P4) concentration in bovine plasma, skim milk, and whole milk. The 72 samples from 24 lactating dairy cows expected to have...
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Effects of prepartal oronasal administration of lipopolysaccharide on milk composition and productivity of transition Holstein cows
Download2013
Ametaj, Burim N., Dunn, Suzanna M., Zebeli, Qendrim, Iqbal, Summera, Mansmann, Dominik A.
The aim of this study was to evaluate the effects of repeated oronasal administration of lipopolysaccharide (LPS) on milk composition and the overall productive performance of dairy cows. One hundred pregnant Holstein dairy cows were randomly assigned to two treatment groups (n = 50). 30 cows out...
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Evaluation of early conception factor lateral flow test to determine nonpregnancy in dairy cattle
Download2007
Goonewardene, Laksiri A., Ambrose, Divakar J., Radke, Brian, Pitney, Phyllis A.
Abstract — The early conception factor (ECF) lateral flow test was evaluated for its ability to accurately determine nonpregnant status in dairy cattle. Results of 2 field trials involving 191 cows and 832 tests indicated the probability that a cow can be correctly diagnosed as nonpregnant by...
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Innate immunity and carbohydrate metabolism alterations precede occurrence of subclinical mastitis in transition dairy cows
Download2015
Dervishi, Elda, Dunn, Suzana M., Zhang, Guanshi, Ametaj, Burim N., Hailemariam, Dagnachew
Background This study examined whether activation of innate immunity and alterations of carbohydrate and lipid metabolism precede development of subclinical mastitis (SCM). Methods Blood samples were collected from the coccygeal vein from 100 Holstein dairy cows at -8, -4, disease diagnosis week,...
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Intraruminal administration of Megasphaera elsdenii modulated rumen fermentation profile in mid-lactation dairy cows
Download2012
Mazzolari, Alberto, Yang, Wen Z., Terrill, Sarah J., Zebeli, Qendrim, Dunn, Suzanna M., Ametaj, Burim N.
This study evaluated the effects of intraruminal administration of Megasphaera elsdenii on ruminal fermentation patterns, the profile of plasma metabolites, and milk yield and composition of mid-lactation dairy cows. Eight primiparous, ruminally cannulated Holstein cows were arranged in a paired...