References of "Nguyen Kien, Cuong"
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See detailPostpartum anoestrus in Holstein x Lai Sind crossbred dairy cows in small farms of Ho Chi Minh City
Nguyen, Kien Cuong; Hanzen, Christian ULiege

in Vo Thi, Tra; Ho Thi Kim, Hoa; Le Thanh, Hien (Eds.) et al Proceedings of the 19th Federation of Asian Veterinary Association Congress (2016, September 08)

The aim of the study was to assess the prevalence of postpartum (PP) anestrus and the effect of factors on this prevalence in small dairy farmers. The data of 419 calvings and PP periods from 35 small ... [more ▼]

The aim of the study was to assess the prevalence of postpartum (PP) anestrus and the effect of factors on this prevalence in small dairy farmers. The data of 419 calvings and PP periods from 35 small dairy farms was collected during two years 2013 and 2014. Cows which failed to express estrus signs by day 60th after calving were submitted for manual palpation and transrectal ultrasonography to evaluate ovarian state. 49.9% of observed cows were not detected in estrus by the stockman during the first 60 days PP. The prevalence of type I, type II, cystic, pyometral and detective anestrus (or subestrus) was 27.0, 6.7, 0.5, 0.7 and 15.0%, respectively. The presence of dystocia or uterine infection was accompanied by an increase in risk of the type I anestrus (36.7% vs 23.1%, P = 0.005; 41.4% vs 21.5% , P < 0.001, respectively). Cows with a low BCS at calving (< 3) or at the 30th day PP (< 2.5) significantly showed a high risk of the type I anestrus than cows with a medium or high BCS at the same periods. In conclusion, the anestrus type I and subestrus mainly contriduted to high risk of PP anestrus in small dairy farms in HCMC. The dystocia, uterine infection, low BCS at calving and at day 30th PP constituted major causes of the type I anestrus. [less ▲]

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See detailBetween bovine milk production and reproduction : the challenge.
Hanzen, Christian ULiege; Nguyen Kien, Cuong

in Vo Thi Tra; Ho Thi Kim, Hoa; Le Thanh, Hien (Eds.) et al Proceedings of the 19th Federation of Asian Veterinary Association Congress (2016, September 07)

Huge differences in dairy milk production can be observed around the world. They can be explained by differences in genetic, nutritional resources and management including the capacities of the farmers ... [more ▼]

Huge differences in dairy milk production can be observed around the world. They can be explained by differences in genetic, nutritional resources and management including the capacities of the farmers and veterinarian to prevent and treat the different pathologies inducing of the wellbeing of the animals. According to the world market of milk production, the challenge of each farm is not only to produce a milk of quality but also to reduce the costs of milk production by improving reproductive performances. Anywhere in the world we are responsible to encourage and develop a sustainable approach of milk production and agriculture development according to his three pillars: environment, economic and social. Our presentation will present (1) the mains figures about the milk production in the world, (2) the definitions and prevalences of the different periods involved in the reproductive life of a cow, (3) the nutritional, genetic and pathological factors involved in the milk production on general and more specifically in reproduction (dystocia, placental retention, uterine infections, postpartum anoestrus), the relationships between these factors, (‘) the state of art of the definition, methods of diagnostic state of art of the main reproduction pathologies (dystocia,) affecting the dairy cows during the waiting and reproduction periods. [less ▲]

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See detailAnatomie et physiologie génitale bovine
Hanzen, Christian ULiege; Nguyen, Kien Cuong

Learning material (2014)

La présentation concerne les rappels physiologiques et anatomiques du tractus génital de la vache. Traduite en vietnamien par le Dr. Nguyen Kien Cuong, doctorant au service de Theriogenologie de la ... [more ▼]

La présentation concerne les rappels physiologiques et anatomiques du tractus génital de la vache. Traduite en vietnamien par le Dr. Nguyen Kien Cuong, doctorant au service de Theriogenologie de la Faculté de Médecine Vétérinaire, elle a été donnée en aout 2014 aux étudiants de la faculté agrovétérinaire de l'université Nong Lam de HCMville [less ▲]

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See detailEffects of the dose of equine Chorionic Gonadotropin (eCG) on estrus and follicular growth parameters in african bovine breed N’Dama
Okouyi, Marcel; Nguyen Kien, Cuong; Hanzen, Christian ULiege

Poster (2014, August 28)

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See detailA post-mortem study of physiopathological characteristics of genital tracts of culled dairy cows in South Vietnam.
Nguyen Kien, Cuong; Okouyi, Marcel; Hanzen, Christian ULiege

Poster (2014, August 28)

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See detailEstudio ante y postmortem de las caracteristicas fisiopatologicas del tracto genital y sus factores de riesgo en vacas lecheras en el sur de Vietnam
Nguyen, Kien Cuong; Tomas Mulet, Cristina; Okouyi-Mfoumou, Marcel et al

Conference (2014, June)

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See detailExamen ante et postmortem du tractus génital de vaches laitières du Sud Vietnam.
Nguyen Kien, Cuong; Hanzen, Christian ULiege

in Revue d'Élevage et de Médecine Vétérinaire des Pays Tropicaux (2013), 66(3), 85-90

De février à août 2012, 507 vaches de réforme, de race croisée Holstein x Lai Sind, d’âge moyen 8,5 ans, ont été examinées ante-mortem (détermination de l’âge par l’examen de la denture, évaluation du ... [more ▼]

De février à août 2012, 507 vaches de réforme, de race croisée Holstein x Lai Sind, d’âge moyen 8,5 ans, ont été examinées ante-mortem (détermination de l’âge par l’examen de la denture, évaluation du score corporel, examen vaginal au moyen d’un spéculum) et post-mortem (examen échographique des ovaires, examen du contenu utérin). Près de la moitié (44,4 %) avaient un score corporel inférieur à 2,5. Les fréquences du pneumovagin et de l’urovagin étaient respectivement de 33,1 % et 14,7%. L'âge et le score corporel ont exercé un effet significatif sur la fréquence de ces affections. Les fréquences des écoulements vaginaux et des contenus utérins anormaux étaient respectivement de 12,1% et 5,4%. Sur les 507 vaches examinées, 226 vaches (44,6%) étaient en anœstrus. Parmi les anœstrus, les fréquences des anœstrus pathologiques fonctionnels (types 0, I et II), associés à un kyste, à un pyomètre ou à une gestation ont été respectivement de 37,3%, 2 %, 0,4 % et 4,9 %. Les anœstrus pathologiques de type 0 et I ont été plus fréquemment observés chez les vaches maigres et chez celles qui étaient âgées de moins de 6 ans. [less ▲]

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