Increased incidence of retained placenta associated with heat stress in dairy cows

Dubois, Paul; Williams, D. J.

doi:10.1016/0093-691x(80)90120-x

Cited by 51 publications

(29 citation statements)

References 3 publications

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“…It was observed that cows which calved in autumn, spring and winter had a relatively higher incidence of endometritis than those which delivered in summer (31.2, 25.3 and 24.7 vs. 18.8% respectively). These findings were in agreement with those of Arthur [14,15], but not with the results reported by Dubois and Williams [16], who stated that the incidence of puerperal endometritis was higher in summer (May to September) than in the rest of the year. The higher incidence of endometritis in autumn, spring and winter might be due to an unhygienic calving environment during the seasons in which rainfall may dampen the ground.…”

Section: Discussionsupporting

confidence: 90%

Factors Leading to Endometritis in Dairy Cows in Egypt with Special Reference to Reproductive Performance.

Ghanem

Shalaby

Sharawy

et al. 2002

Journal of Reproduction and Development

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Abstract. The incidence of endometritis and risk factors between herds and between breeds and its effect on the subsequent fertility of cows may differ among countries. It is therefore necessary to study the etiology of endometritis in these different circumstances. This work was carried out on 190 Holstein Friesian cows (2.5-13 years old) belonging to El-Salhia Agriculture project (Ismailia Province, Egypt) during the period from January 1996 to April 1997. The incidence of endometritis was 22.4%, and the most prominent risk factors leading to the occurrence of endometritis were retained placenta, stillbirth, external interference by herdmen during calving and difficult birth (20.6, 19.1, 12.3 and 5.3% respectively). The cows in the first parity had a higher incidence of endometritis (27.7%) than cows in the subsequent parities. Cows which calved in autumn (31.2%) had a higher incidence of endometritis than cows which calved in the other seasons. The endometritic cows had inferior reproductive indices than the normal cows. The interval between calving and first service in cows with endometritis was 14 days longer than the normal ones. The first service conception rate (12.5%) and final conception rate (45.5%) in cows with endometritis were lower than those in the normal cows (50 and 100%) (P<0.05 ). In conclusion the most important risk factors leading to endometritis are retained placenta and abnormal calving in dairy cows in Egypt. Moreover, postpartum endometritis adversely affects subsequent fertility in dairy cows in Egypt.

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Section: Discussionsupporting

confidence: 90%

Factors Leading to Endometritis in Dairy Cows in Egypt with Special Reference to Reproductive Performance.

Ghanem

Shalaby

Sharawy

et al. 2002

Journal of Reproduction and Development

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“…In tendency, the incidence was higher in THI classes below 50 than in classes above this value. This trend is contrary to DuBois and Williams (1980), who found higher incidences of retained placenta and postpartum metritis during warm months than during cold months. Accordingly, heat stress was stated to shorten the gestation period and enhancing the incidence of retained placenta and postpartum metritis.…”

Section: Discussioncontrasting

confidence: 94%

Climatic effects in Central Europe on the frequency of medical treatments of dairy cows

Sanker

Lambertz

Gauly

2013

Animal

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In the present study, the relationship between the temperature-humidity index (THI) and the incidence of medical treatments in lactating dairy cows in Lower Saxony, Germany, was investigated. Records of all veterinary-treated cases over 2 years (2003 and 2005) from eight Holstein-Friesian dairy herds raised in loose-housing systems (55 to 170 cows per herd) were evaluated. After exclusion of management-dependent and climate-independent cases, a total of 5547 treatments were analyzed. Treatments were clustered into the following groups: metabolism, fertility, udder and foot/leg. Meteorological data were compiled from the nearest weather station (average distance 6 s.d. 39 6 13 km). Hourly temperatures and relative humidity values were used to calculate the THI, which was divided into classes. Out of the total number of treatments, 37.4%, 32.9%, 21.6% and 8.1% belonged to metabolism, udder, fertility and foot/leg, respectively. Data were analyzed with a mixed model that included THI class, season and year as fixed effects and farm as random effect. In general, incidences were neither affected by the year ( P . 0.05) and season ( P . 0.05) nor by THI classes ( P . 0.05). In tendency, incidences of metabolic treatments increased with increasing THI and incidences of udder treatments increased with decreasing THI. In conclusion, indications of moderate heat stress during summer months in Central Europe were found in the present study, although THI and season did not affect the different disease complexes significantly.

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“…This illustrates that an increase in temperature, relative humidity, sunshine radiation and THI, could lead to lengthen DP and ICP by several days (Table 4). Similar findings were reported by Du Bois and Williams (1980), Weller and Folman (1990), Ray et al (1992), Bouraoui et al (2002), Jordan et al (2002), Mishra and Joshi (2009) and Gaafar et al (2011). Thus, calving schedules could be adjusted to minimize the adverse effect of heat stress.…”

Section: Effect Of Climatic Variables On Dry Period and Inter Calvingsupporting

confidence: 89%

Effect of macroclimatic factors on milk production and reproductive efficiency of Holstein Friesian Deoni crossbred cows

Zewdu¹,

Thombre²,

Bainwad³

2014

J. Cell Anim. Biol.

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This study was undertaken to evaluate the effects of different macro climatic variables on milk production and reproduction efficiency of Holstein Friesian × Deoni crossbred cows. Data of 256 HF × Deoni crossbred cows with 1485 total records of lactation and the meteorological data over a 30-year period (1981 to 2010) were obtained from Marathwada Agricultural University Cattle Cross Breeding Project and the University Meteorological Observatory Weather Station, respectively. The parameters used as indicators of milk production and reproduction performance in this study were lactation milk yield, lactation length, dry period and inter calving period. They were plotted against the monthly climatic variable for regression analysis. It was observed that maximum temperature, maximum humidity, bright sunshine hours and maximum temperature humidity index exhibited negative and significant regression result with lactation milk yield and lactation length. All the considered climatic variables accounted for 28 and 21% direct variation on lactation milk yield and lactation length as verified by the value of coefficients of determination (R 2 ). In contrast, maximum temperature, maximum humidity, wind speed and maximum temperature humidity index showed positive and significant regression on dry period and inter calving period. All the considered climatic variables accounted for 25 and 23% direct variation on dry period and inter calving period, respectively. The summary of the meteorological data confirmed that there were high values of temperature humidity index for considerable months yearly, which suggested that most crossbred cows were exposed to the negative effects of heat stress. Hence, other productive and reproductive strategies like improving environmental, productive and reproductive management of cows are needed to reduce the adverse effect of heat stress.

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Increased incidence of retained placenta associated with heat stress in dairy cows

Cited by 51 publications

References 3 publications

Factors Leading to Endometritis in Dairy Cows in Egypt with Special Reference to Reproductive Performance.

Factors Leading to Endometritis in Dairy Cows in Egypt with Special Reference to Reproductive Performance.

Climatic effects in Central Europe on the frequency of medical treatments of dairy cows

Effect of macroclimatic factors on milk production and reproductive efficiency of Holstein Friesian Deoni crossbred cows

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