Effect of clinical mastitis and other diseases on reproductive performance of Holstein cows

Ahmadzadeh, A.; Frago, F.; Shafii, Bahman; Dalton, J.C.; Price, William J.; McGuire, Mark A.

doi:10.1016/j.anireprosci.2008.04.024

Cited by 61 publications

(59 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The higher incidence of CM is associated with lower reproductive performance. Cows with mastitis had a longer interval from calving to first artificial insemination (AI), longer days open (DO) and higher number of services per conception (SC) compared to cows with no mastitis (Ahmadzadeh et al, 2009;Nava-Trujillo et al, 2010). In a study by Bouamra et al (2017), cows with signs of CM before the first insemination had greater days to first insemination (DFI) and DO than cows that exhibited CM after the first insemination or cows without signs of CM.…”

Section: Introductionmentioning

confidence: 99%

Incidence of Clinical Mastitis and its Influence on Reproductive Performance of Dairy Cows

Elmaghraby¹,

El‐Nahas²,

Fathala³

et al. 2017

AJVS

View full text Add to dashboard Cite

Key words:Clinical mastitis, Reproductive Performance, Dairy CowsThe objectives of this study were to determine the incidence of clinical mastitis (CM) in relation to some risk factors and its impact on reproductive performance of Holstein cows. Lactation records (n = 1875) were obtained from Dina farms covering the period between 2013 and 2016. One third of cows (647/1875) had contracted at least one episode of CM throughout the entire lactation. Frequency of CM decreased progressively with the month of lactation, and approximately half of the cases occurred within the first three months postpartum. Incidence decreased (P<0.001) with level of milk yield, but increased (P<0.001) with parity. CM significantly (P<0.05) increased calving to first estrus (+ 7.7 days), and to calving first insemination intervals (+6.5 days) compared to non-affected ones. Furthermore, cows contracted CM before conception required 31 days more and +0.47 inseminations to conceive than cows without mastitis. In brief, CM has a negative impact on reproductive performance of Holstein cows, and its occurrence is associated with level of milk yield, lactation order and stage of lactation.

show abstract

Section: Introductionmentioning

confidence: 99%

Incidence of Clinical Mastitis and its Influence on Reproductive Performance of Dairy Cows

Elmaghraby¹,

El‐Nahas²,

Fathala³

et al. 2017

AJVS

View full text Add to dashboard Cite

show abstract

“…Lameness is one of the important reasons for culling a cow together with infertility and mastitis (Whitaker et al, 2004). Indirectly, there will be an added effect of lameness on culling as, like mastitis, it impacts negatively on fertility (Garbarino et al, 2004;Ahmadzadeh et al, 2009). The impact of foot disorders on welfare because of these negative impacts on other health traits is likely to be underestimated in our model.…”

Section: Discussionmentioning

confidence: 99%

Assessing the welfare impact of foot disorders in dairy cattle by a modeling approach

Bruijnis

Beerda

Hogeveen

et al. 2012

Animal

120

View full text Add to dashboard Cite

Foot disorders are the main cause of dairy cow lameness and are considered to have a major impact on the welfare of dairy cattle. This study adopts a modeling approach, using a dynamic stochastic model, to provide more insight into the welfare impact of different types of foot disorders, both clinical and subclinical. The impact of specific foot disorders on welfare was assessed by simulating the incidence and duration of foot disorders and the pain associated with them. Pain assessment was based on locomotion scores, with underlying knowledge obtained from scientific literature and experts. The results demonstrated the seriousness of the welfare impact of foot disorders. The negative welfare impact was measured on a scale from 0 to 60, where the maximum outcome represents a cow having very severe pain during the whole year. On average, each cow achieves a welfare impact score of 12, which is 20% of the maximum welfare impact score. This welfare score equals having severe pain for a period of 3 months, indicating a serious impact on welfare. On average, digital dermatitis impacts most on welfare, which is caused by a high incidence of the painful clinical stage, followed by sole hemorrhages (SoH) and interdigital dermatitis and heel horn erosion (IDHE). The combination of a high incidence and long duration of SoH and IDHE causes this relatively high welfare impact of foot disorders that occur mostly subclinically. On average, over 1 year, 46% of the welfare impact due to foot disorders is caused by clinical foot disorders. The fact that subclinical foot disorders contribute more or less equally to the effects on welfare as clinical ones, indicates that farmers may readily underestimate the welfare impact by a factor two. Modeling welfare impact at cow level, individual cases of foot disorders, stresses the importance of pain intensity, indicating the importance of clinical foot disorders. This study demonstrated the serious welfare impact of foot disorders in dairy cattle and pointed out the considerable impact of subclinical foot disorders. Furthermore, the approach of welfare assessment, for example herd v. cow level, influenced the ranking of foot disorders for their impact on animal welfare. Potentially, this leads to different prioritization of specific solution strategies for dairy farmers, for example, focusing on cow comfort, hygiene or preventive medical treatments, foot trimming and/or health monitoring. The findings in this study support in raising awareness about this welfare issue.

show abstract

“…También se han investigado los efectos que tienen la presentación de patologías frecuentes en bovinos de leche (mastitis, retención de membranas fetales, metritis, hipocalcemia puerperal, cetosis y cojeras) durante el postparto sobre la dinámica ovárica y la fertilidad, reportándose relaciones importantes entre la presentación de dichas patologías y el pobre desempeño reproductivo (7)(8)(9).…”

Section: Introductionunclassified

“…The effects of common pathologies in dairy bovines have also been investigated (mastitis, retention of fetal membranes, metritis, puerperal hypocalcemia, ketosis and lameness,) on ovarian dynamics and fertility during postpartum, reporting important relationships between the occurrence of such pathologies and poor reproductive performance (7)(8)(9).…”

Section: Introductionmentioning

confidence: 99%

Risk factors for ovarian postpartum resumption in Holstein cows, under high tropical conditions

Zambrano

2014

Rev MVZ Córdoba

View full text Add to dashboard Cite

Objective. To evaluate the factors associated with postpartum ovarian resumption and follicular dynamics in Holstein cows under high altitude conditions (2,600 masl). Materials and methods. Forty-five Holstein cows were studied between 14 days before and 120 days after calving. Uterine involution, follicular dynamics, serum progesterone and peripartum pathologies were evaluated; additionally, body condition (BC), calving type, milk yield, were also evaluated. According to hormonal and reproductive findings, cows were classified into two groups: early ovarian resumption (EOR) or delayed ovarian resumption (DOR). Results. The occurrence of the first follicular for EOR animals (n=31) was produced on average 9.58±3.45 days postpartum and was similar to the DOR group (n=10) [10.8±4.83 days; p>0.05)]. The first postpartum ovulation occurred at 21.55±5.90 days (EOR) and was significantly delayed (48.7±27.85 days) for DOR animals (p<0.05). Thirty-six point five percent of the cows (n=f) had normal estrus cycles (18 to 24 days), while 63.5% (n=26) showed dysciclia. The factors associated with ovarian resumption and cyclicity were the loss of BC [OR=3.3, CI 95% (1.2-13.3) (p<0.05)] and lameness [OR= 9.0, CI 95% (1.2-13.3) (p<0.05)]. Conclusions. Although the emergence of postpartum follicular waves was observed early, under the experimental conditions of this study there are factors that may affect the first ovulation favoring the occurrence of anovulatory conditions. The determinant factors were low body condition and lameness.Key words: Anovulation, ovarian follicle, postpartum (Source: DeCS). RESUMENObjetivo. Evaluar los factores asociados con la reactivación ovárica y la dinámica folicular postparto en vacas de la raza Holstein bajo condiciones de altura (2600 msnm). Materiales y métodos. Cuarenta y cinco vacas Holstein fueron estudiadas entre 14 días preparto y 120 días posteriores al mismo. Fueron evaluadas la involución uterina, dinámica folicular, progesterona sérica y presentación de patologías en el periparto; adicionalmente la condición corporal (CC), tipo de parto y producción de leche. De acuerdo con los hallazgos reproductivos y hormonales, las vacas se agruparon en dos grupos: reactivación ovárica temprana (ROT) o retardada (ROR). Resultados. La emergencia de la primera onda folicular para animales ROT (n=31), ocurrió en promedio 9.58±3.45 días postparto y fue . Conclusiones. Aunque la emergencia de ondas foliculares postparto se presentó de manera rápida, bajo las condiciones experimentales del presente estudio, existen factores que afectan la primera ovulación favoreciendo la presentación de condiciones anovulatorias. La presentación de cojeras, y la pérdida de CC postparto fueron factores determinantes.Palabras clave: Anovulación, folículo ovárico, postparto (Fuente: DeCS).

show abstract

Effect of clinical mastitis and other diseases on reproductive performance of Holstein cows

Cited by 61 publications

References 14 publications

Incidence of Clinical Mastitis and its Influence on Reproductive Performance of Dairy Cows

Incidence of Clinical Mastitis and its Influence on Reproductive Performance of Dairy Cows

Assessing the welfare impact of foot disorders in dairy cattle by a modeling approach

Risk factors for ovarian postpartum resumption in Holstein cows, under high tropical conditions

Contact Info

Product

Resources

About