The Association Between Clinical Disease, Production and Culling of Holstein-Friesian Cows

Martin, S W; Aziz, Saepul; Sandals, W. C. D.; Curtis, R A

doi:10.4141/cjas82-073

Cited by 65 publications

(39 citation statements)

References 7 publications

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“…Furthermore, the 305 day milk yield equivalent in the previous lactation was not significantly different between the cystic and the non-cystic cows, suggesting a non-causal association. This finding is in agreement with some previous reports [16,17], but not in accord with the results of other studies [12][13][14]. It was reported that cystic lactations produced more milk than non-cystic lactations [12,14].…”

Section: Discussionsupporting

confidence: 83%

“…This finding is in agreement with some previous reports [16,17], but not in accord with the results of other studies [12][13][14]. It was reported that cystic lactations produced more milk than non-cystic lactations [12,14]. However in the present study and in agreement with the study reported by Nanda et al [17], lactations of cystic cows did not produce more 305 day milk yield equivalent than lactations of non-cystic cows.…”

Section: Discussionsupporting

confidence: 42%

“…The most widely accepted hypothesis is that it is a early lactation stress, twin calving, breed and is thought to be hereditary [12,13]. It is widely thought that high milk production increases the risk of a cow to develop COD [12][13][14]. Many authors also agree that lactations from cows that have COD produce a greater 305 day milk yield than non cystic lactations [12][13][14][15].…”

mentioning

confidence: 96%

“…It is widely thought that high milk production increases the risk of a cow to develop COD [12][13][14]. Many authors also agree that lactations from cows that have COD produce a greater 305 day milk yield than non cystic lactations [12][13][14][15]. However some authors argue that high milk production is not the cause of COD [16,17].…”

mentioning

confidence: 99%

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Risk Factors of Cystic Ovarian Disease in Dairy Cattle.

Zulu

Penny

1998

Journal of Reproduction and Development

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Abstract. Production and reproduction records of the Holstein dairy herd at Edinburgh University's Langhill farm were analyzed to study the incidence, possible risk factors and to assess the reproductive performance of cows with cystic ovaries. Risk factors investigated were whether a cow was from the genetically selected or control herd, 305 day milk yield equivalent of the previous lactation to the cystic one, and age/parity. For analysis of the consequences of cystic ovarian disease, cystic cows were individually matched to non-cystic herd mates for selection or control herd, age/parity, and month of calving. The cumulative lactational incidence of cystic ovarian disease was 8.1%. Selected herd cows were more at risk of developing cystic ovarian disease than control herd cows (p<0.05) and odds ratio 3.55. There was no significant association between high milk production in the previous lactation and COD (p<0.05). However, a significant association between increasing age/parity and cystic ovarian disease was found (p<0.01). The 305 day milk yield equivalent in the previous and cystic lactation for the cystic cows was not significantly different from the paired herd mates (p>0.05) respectively. However, the cystic cows produced significantly higher 305 day milk yield equivalent in the cystic lactation than the previous non-cystic lactation (p<0.001). The calving to conception and calving intervals were significantly longer in the cystic cows than the non-cystic paired cows (p<0.05) respectively. In conclusion, cystic ovarian disease causes an increase in the calving to conception and calving intervals. COD is common in older cattle. To understand risk factors more research needs to be done, especially high milk production prior to cystic ovarian disease diagnosis in the same lactation.

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Section: Discussionsupporting

confidence: 83%

Section: Discussionsupporting

confidence: 42%

mentioning

confidence: 96%

mentioning

confidence: 99%

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Risk Factors of Cystic Ovarian Disease in Dairy Cattle.

Zulu

Penny

1998

Journal of Reproduction and Development

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“…Warnick et al (1995) observed that milk yield was reduced for up to 2 weeks before lameness was recognised, perhaps resulting from reduced intakes and negative energy balance. Other authors have reported an increase in milk yield (Barkema et al, 1994) and no change in milk yield (Martin et al, 1982).…”

Section: Introductionmentioning

confidence: 96%

Risk factors and milk yield losses associated with lameness in Holstein-Friesian dairy cattle

Onyiro

Offer²,

Brotherstone

2008

Animal

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Weekly locomotion scores on a scale of 1 to 5 were used to investigate the relationship between cattle lameness, management systems and the impact of lameness on milk production. The data were 14 026 locomotion scores from 248 Holstein-Friesian cows. Cows were managed in two groups, XE (high-concentrate feed and housed indoors all year) and XM (low-concentrate feed and outdoors in summer). Analysis was performed using residual maximum likelihood. Results indicated that the most significant variables affecting locomotion were time of year when the animal was locomotion scored and management group. Cows scored during February and August had increased locomotion problems. Cows in the more intensively managed group had significantly poorer locomotion compared with those in the more extensive group. Older animals were more susceptible to lameness than heifers. Body weight, body condition score and days in milk (DIM) also accounted for significant variation in locomotion score. Poor locomotion was associated with a significant reduction in the milk yield of later lactation cows. There was a significant difference in the shape of the lactation curve depending on whether or not the cow was lame during lactation. Average persistency was greater for the group of cows never lame throughout lactation compared with those lame before 60 DIM.

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The association between antibody titres againstCampylobacter fetus and reproductive efficiency in dairy cattle

Akhtar¹,

Riemann²,

Thurmond³

et al. 1993

Vet Res Commun

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The relationship between the antibody titres against Campylobacter fetus and various indices of reproductive efficiency was studied in a cross-sectional study of 178 dairy cows from three California Dairy Herd Improvement Association herds. Blood samples were collected from the lactating cows during December 1986. Enzyme-linked immunosorbent assays were used to determine the antibody titres of the cow against Campylobacter fetus, Haemophilus somnus and Leptospira hardjo and were classified as either negative or positive. The status of a cow as either negative or positive against Campylobacter fetus and Haemophilus somnus represents serological evidence of natural exposure to the corresponding bacterial agents. However, the status against Leptospira hardjo was assumed to reflect a vaccinal titre since all the cows studied had been routinely vaccinated against this organism in September 1986. The data on demographic and reproductive parameters pertained only to the current lactation of the cows and were obtained from Dairy Herd Improvement Association individual cow records of December 1986. Five indices of reproductive efficiency were used, namely the recent calving interval, the calving-to-conception interval, the calving-to-last-service interval, the number of services per conception, and the number of services since last calving. The serological status against Haemophilus somnus, Leptospira hardjo and other covariates suggested by the results of previous studies were included in modelling the relationships of interest. Stepwise multiple linear regression analyses were carried out to study the adjusted relationship of Campylobacter fetus with each measure of reproductive efficiency. Multivariate analyses revealed that the adjusted relationship for Campylobacter fetus with all five measures of reproductive efficiency was non-significant (p > 0.05). Among the covariates, Leptospira hardjo had a strong and independent relationship with recent calving interval, the unstandardized partial regression coefficient being -0.77. The possible biological mechanisms of these associations are discussed.

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The Association Between Clinical Disease, Production and Culling of Holstein-Friesian Cows

Cited by 65 publications

References 7 publications

Risk Factors of Cystic Ovarian Disease in Dairy Cattle.

Risk Factors of Cystic Ovarian Disease in Dairy Cattle.

Risk factors and milk yield losses associated with lameness in Holstein-Friesian dairy cattle

The association between antibody titres againstCampylobacter fetus and reproductive efficiency in dairy cattle

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