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The aim of the presented study was to estimate the influence of the traits of hoof measurement in dairy cows on claw disorders, lameness, and locomotion scores were determined. Data on claw health and measurement trait of claws were collected from 68 primiparous cows housed in tie stalls and from 76 primiparous cows housed in free stalls. Data were collected during professional claw trimming. The following claw disorders were recorded: sole haemorrhage, digital dermatitis, interdigital dermatitis, sole ulcer, interdigital growth, axial wall fissure, sand-crack (vertical fissure), laminitis, and dermatitis of the toe. Locomotion scores were defined directly before claw trimming. The angles of claws were measured in degrees with an electronic protractor. The heel depth, dorsal border, and diagonal sole surface were measured with an electronic caliper. Moderate association of claw measurements with claw disorders was demonstrated. No significant differences were found in hoof measurement traits between cows with normal gait and clinical lameness.
The objective of this study was to estimate the influence of age (parity) and housing system on the incidence of claw lesions and lameness in Polish Holstein-Friesian dairy cows. The incidence of hoof lesions and lameness in 1,330 cows was determined at claw trimming at 11 dairy farms in 2003-2004. In the front limbs, the mean of healthy claws was 86.6%, while in the hind limbs, it was 38.7%. The percentage of main diseases in the total number of observed claw lesions was 32.1% for sole ulcers, 18.4% for sole haemorrhage, 17.8% for digital dermatitis, 9.4% for white line disease, 8.1% for thick hock, and 4.5% for interdigital dermatitis. Primarily, the sole ulcers were associated with sole haemorrhage, white line disease, interdigital growth, interdigital dermatitis, and thick hock. The incidence of lameness was noted in 31.4% (locomotion score 2) and 11.7% (locomotion score 3). Parity and housing systems (tethered and free stalls) had no effect on the total percentage of healthy claws and the distribution of the locomotion score. The incidence of sole ulcers was 47.6% and 55.4% of the total numbers of claw lesions in cows with locomotion scores 2 and 3 respectively.
Fifty-six cows that became lame within 60 d postpartum and 157 healthy cows (controls) were used in the study. The results from the following variables were analysed: calving to the first service interval, calving to conception interval, conception rate at the first service, and overall conception rate. Lameness was associated with a statistically significant 9 d increase in the interval from calving to the first service. In the lame cows, the interval from calving to conception was by 27 d longer (P<0.05) than those in the control cows. The conception rate at the first service was 41.4% (control - 54.6%). The serum vitamin E concentration was lower in the cows with lameness than that in the control cows: 2.31±0.24 µg/mL versus 2.44±0.12 µg/mL. However, the difference was not statistically significant. The serum P concentration in the lame cows (4.56±0.24 mg/dL) was significantly different from that in the controls (5.35±0.16 mg/dL). The mean Zn concentration was significantly lower one in the cows with lameness (57.81±3.8 µg/dL) compared with the control cows (85.51±6.01 µg/dL). These results suggest that there is a possible interaction between lameness, fertility, and serum P and Zn concentrations in dairy cows.
Concentrations of serum sialic acid, malondialdehyde (MDA), retinol, zinc, and copper were measured in 52 lactating Holstein cows. Out of them, 15 were controls, 21 mildly lame, 7 moderate lame, and 9 severely lame. The animals were housed in free-stall barns with a slurry surface and were not released for pasture feeding. Compared to control animals, the mean serum total sialic acid concentrations in animals with severe lameness, but not in those with mild and moderate lameness, were increased significantly (P<0.01). The levels of MDA were higher in severely lame animals than in controls as well as in mildly and moderately lame animals and the differences were statistically significant (P<0.001). Contrary to the elevated serum concentrations of sialic acid and MDA in severely lame cows, the mean serum retinol value of these animals showed a remarkable decline (P<0.05). As for serum zinc and copper concentrations, there were statistically no significant alterations between the groups. In conclusion, results of the present study indicate that the concentrations of serum total sialic acid, MDA and retinol are associated with a degree of the lameness.
Lameness of cows is an important factor influencing the longevity and performance of the herd, including milk yield losses. It has a negative impact on reproductive performance and constitutes an increasing risk for early culling. Claw disorders, such as white line diseases, sole ulcers or papillomatous digital dermatitis, are the most frequent causes of clinical lameness in dairy cows. Lameness most often appears within 100 days postpartum, and its incidence was calculated at 54.5 to 65% per 100 cows, whereas the mean prevalence of lameness has been estimated at 20.6%. Lame cows exhibit different oestrus behavior than non-lame cows. Above all, lame cows had a shorter oestrus, and an increased locomotion score was associated with a shorter time of standing and walking as a consequence of a longer time of lying down. A poor oestrus detection rate is likely to be a more important factor in reducing average fertility levels. Hence, the average conception rate and pregnancy rate for lame cows are lower, and the rates of services per conception are higher. Lame cows have a longer interval from calving to conception compared with non-lame cows. In the case of lame cows with lesions and multiple lesions this interval amounted to 140 and 170 days, respectively, as compared with 100 days for healthy cows. Ovarian cysts are observed in about 10-30% of lactating dairy cows and are more likely to occur within the first 80 days postpartum, i.e. during the same period when hoof disorders and lameness occur. Lameness in cows within the first 30 days postpartum was associated with a higher incidence of ovarian cysts, a lower likelihood of pregnancy and lower fertility than in non-lame cows. The effect of lameness on culling within the first 60 DIM was lower, but cows diagnosed in this period seemed to be at a greater risk of being culled between 121 and 240 DIM. Nevertheless, when deciding whether to cull a cow, one should consider such factors as parity, lactation stage, milk yield, reproductive performance, health, season and animal welfare.
The aim of this paper was to investigate the impact of clinical lameness in Polish Holstein-Friesian dairy cows on milk yield as well as on fat, protein, and lactose yields during early lactation (120 d). The dataset includes 312 monthly test-day milk yields and milk composition records from 78 cows, which calved from October 2008 to April 2009. Twice a week, during the first 120 d postpartum, the cows were examined for lameness and they were scored fortnightly according to a 5-point locomotion scoring system. Factors affecting milk yield and milk components included calving season, parity, month of lactation, and degree of lameness. In cows, which were clinically lame for a month and which were clinically lame for more than a month (maximum per 2 months), the total mean reduction in milk yield per 120-d lactation was approximately 308 and 283 kg, respectively, as compared with cows, which were never lame in early lactation.
The study was conducted in the years 2006–2008. The experimental materials comprised 368 Holstein-Friesian cows purchased from Germany as in-calf heifers. The objective of this study was to determine the health status of cows in a commercial herd kept in the Olsztyn region, based on the type and incidence of diseases that occurred during three consecutive lactations, and to analyze the effect of these diseases on milk yield and composition in the first, second and third lactation cycle. The cows were divided into five groups: HEA – clinically healthy cows (showing no disease symptoms), MAS – cows with mastitis, LAM – cows with foot/leg defects and lameness, REP – cows with reproductive problems (retention of the placenta, endometritis, ovarian cysts), MET – cows with metabolic diseases (ketosis, abomasal displacement). It was found that the most common diseases during three consecutive lactations in the investigated herd were endometritis (37.63%) which occurred soon after calving (on day 18 post-partum), mastitis (35.48%), formation of ovarian cysts (10.10%), ketosis (8.39%) and leg/foot defects (6.44%). Retention of the placenta and abomasal displacement were diagnosed much less frequently (1.62% and 0.34% respectively). The percentage of healthy cows decreased in successive lactations (19.81% in the first lactation, 12.28% in the second lactation, 6.22% in the third lactation). During each lactation, more than one third of cows suffered from mastitis. The proportion of cows showing the symptoms of ketosis increased with age, from 5.12% in the first lactation to 12.23% in the third lactation. The highest yields of milk and milk components over a 305-day lactation cycle were noted in cows with reproductive diseases (ROZ). Foot/led defects and lameness (LAM), mastitis (MAS) and metabolic diseases (MET) had the most significant effect on a decrease in milk production.
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