共查询到20条相似文献,搜索用时 15 毫秒
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《Veterinary Medicine and Science》2018,4(3):218-226
Lameness is one of the most serious economic and welfare issues in the dairy industry. Early detection of lameness can be difficult, but provision of early treatment is crucial. Previous studies have used infrared thermography to show that increased foot temperature (FT) is associated with lameness and foot lesions. However, poor accuracy has limited the management application potential. This study analysed ambient‐temperature (AT)‐adjusted foot‐surface temperatures and temperature differences between the hind feet of individual cows to enhance lameness detection. Cow FTs were recorded on a 990‐cow farm using an infrared thermometer fortnightly for 6 months. Additionally, mobility level was scored using the AHDB Dairy 4‐point scale. The averages of FTs and ATs were 23.83 ± 0.03°C and 13.99 ± 1.60°C, respectively. The FT of cows with lameness was significantly higher than that of cows without lameness (P < 0.001). Increases in FTs correlated with the mobility score (MS) (P < 0.001). According to receiver operating characteristic (ROC) curves, the optimal threshold based on actual FTs was 23.3°C with 78.5% sensitivity and 39.2% specificity. However, the ROC curve for the AT‐adjusted FT and FT difference parameters showed minimal improvements over the FT in detecting lameness. In conclusion, the infrared thermometer results demonstrated the association between elevated FTs and lameness, but further improvements to this detection technique will be required before it can be implemented as a management tool for detecting cows that could benefit from treatment. With additional validation, the technique could be used as a screening device to identify cows in need of further assessment. 相似文献
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随着畜牧业的快速发展和国际贸易自由化进程的加快,动物福利对我国畜牧业发展的影响越来越大。阐述了动物福利的概念、实施动物福利的现实意义,指出了我国畜禽福利所存在的问题,并提出了相关改善措施。 相似文献
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Hemsworth PH 《Australian veterinary journal》2007,85(5):194-200
The objective of this review is to consider the ethics of stockmanship, particularly from the perspective of the nature and extent of the duties of stockpeople to their farm animals. It will consider what science tells us about the impact of stockmanship on the animal, particularly the welfare of the farm animal. The effects of human-animal interactions on the stockperson will also be considered, since these interactions affect the work performance and job satisfaction of the stockperson and thus indirectly affect animal welfare. Animal ethics is broader than animal welfare and includes economic as well as philosophical, social, cultural and religious aspects. This paper is predicated on the view that farm animals can suffer, and that animal suffering is a key consideration in our moral obligations to animals. Housing and husbandry practices affect farm animal welfare and thus farmers and stockpeople have a responsibility to provide, at minimum, community-acceptable animal housing and husbandry standards for their animals. The farmer's or stockperson's attitudes and behaviour can directly affect the animal's welfare and thus they also have a responsibility to provide specific standards of stockmanship for these animals. However, research suggests that the behaviour of some stockpeople is not as correct as it might be. Such situations exemplify the inevitably unequal human - domestic animal relationship, and this inequality should be considered in analysing the boundary between right and wrong behaviour of humans. Thus ethical discussion, using science and other considerations and involving stockpeople, livestock industries, government and the general public, should be used to establish and assure acceptable stockperson competencies across the livestock industries. Training programs targeting the key attitudes and behaviour of stockpeople presently offer the livestock industries good opportunities to improve human-animal interactions. 相似文献
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MB Allworth B Goonan JE Nelson G Kelly SR McGrath RG Woodgate 《Australian veterinary journal》2023,101(8):293-295
Anthelmintic resistance (AR) is a well-recognized challenge in farmed ruminants. The use of anthelmintics in combination is one of the strategies recommended to slow the rate of AR development. Two studies were undertaken in 2017 and 2019 to assess the efficacy of single-dose macrocyclic lactone (ML) anthelmintic and ML combination drenches. In total, 11 Faecal Egg Count Reduction Trials (FECRTs) were set up in 10 different beef herds, with results available from 10 of those FECRTs (9 herds). AR to a single ML anthelmintic was detected in all 9 herds, with resistance to Cooperia and Haemonchus spp on 9 farms, and resistance to Ostertagia and Trichostrongylus spp on 2 farms. In contrast, for the ML combination anthelmintics, all FECRTs resulted in efficacies of 99%–100%. The results suggest that cattle producers should strongly consider using combination drenches in their herds in preference to single actives. 相似文献
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当前我国肉牛业正处于积极向上发展的良好势头。在肉牛产业化生产中充分重视动物福利要求,提高牛肉产品的质量,在更大范围和更深层次上参与国际竞争是肉牛业发展的必然趋势。本文就我国肉牛生产中存在的系列动物福利问题进行剖析和阐述,具体包括初生犊牛护理、育成牛和架子牛的饲养、育肥牛场的管理、出栏牛的运输和屠宰问题。继而针对该系列问题,提出当前我国肉牛产业化生产中应采取的对策和建议措施,以提高从业人员的动物福利意识,促进肉牛生产中动物福利工作的开展。为我国肉牛业从容应对国际动物福利贸易壁垒,提升国际市场竞争力提供借鉴和指导。 相似文献
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Liu HW Zhong RZ Zhou DW Sun HX Zhao CS 《Journal of animal physiology and animal nutrition》2012,96(6):1127-1135
The study was conducted to evaluate the effects of different lairage time after 8 h road transport on some blood indicators of welfare and meat quality traits in sheep. A total of 84 Ujimqin male sheep (average body weight 27.5 kg, 6 months old) were randomly allotted to one of seven groups: one control group (untransported) and six lairage groups (8 h road transport with 0, 2, 6, 12, 24 and 48 h lairage times respectively). No significant lairage time effects were observed on weight loss. Sheep in 48 h group showed lower hot carcass weight, dressing percentage and higher pH24 h than that in other groups. The total haem pigment contents in sheep meat rose and were higher in 24 and 48 h groups than that in the control group. After transport, sheep in 0, 2, 24 and 48 h groups showed higher serum creatine kinase activities, cortisol and glucose concentrations than that in control group. Sheep in lairage groups had higher serum triiodothyronine and thyroxine levels compared with the control sheep. Sheep in 48 h group showed significant higher packed cell volume, total protein and blood urea nitrogen than that in other groups. Compared with the control group, the white blood cell counts were higher in 0 and 48 h groups. The neutrophil counts in 24 or 48 h groups were higher than that in the control group. The opposite was true for lymphocyte counts. A 6–12 h lairage is recommended in terms of the present transported pattern. 相似文献
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McCosker K Letchford P Petherick JC Meyer D McGowan M 《Australian veterinary journal》2010,88(12):497-503
Objective To determine morbidity and mortality rates in yearling heifers spayed by two methods under commercial conditions in northern Australia. Design In study 1,600 Brahman heifers were allocated to one of three treatments: physical restraint and ear-tagging (Control); physical restraint, ovariectomy by the Willis dropped ovary technique, ear-tagging and ear-marking (WDOT); or electroimmobilisation, ovariectomy via flank incision, ear-tagging and ear-marking (Flank). Heifers were monitored post spaying. Mortalities occurred at unanticipated times, so study 2 investigated their timing and cause in similar WDOT-spayed heifers (n = 574). Results In study 1, morbidity on the day of spaying was 6.0% in the Flank and 2.7% in the WDOT group (not statistically different). Spayed heifers showed behaviours indicative of acute pain/discomfort in the 6 h post spaying. Body weights and gains were significantly lower in the spayed compared with control heifers at days 21 and 42, and 5% of flank wounds were not healed at day 42. Mortalities were 0%, 1.5% and 2.5%, respectively, for Control, WDOT (3 estimated to have occurred on day 11) and Flank (2 on the day after spaying and 1 on each of days 5, 11 and 22). In study 2, the mortality was 0.5%, all within 4 days of spaying. Conclusions In yearling heifers, WDOT spaying resulted in lower morbidity and short-term mortality compared with flank spaying. Both methods compromised the health and welfare of some animals for up to 4 days and body weight gains were reduced during the 6 weeks post spaying. 相似文献
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内蒙古牧区放牧羊的福利养殖现状分析 《畜牧与饲料科学》2020,41(5):86-90
内蒙古牧区放牧羊来自天然大草原, 以其肉质鲜美、多汁、无膻味、绿色无污染而享誉国内外。面对发达国家日益加剧的“动物福利”贸易壁垒, 打造内蒙古福利肉羊品牌, 打破世界贸易壁垒, 提高内蒙古肉羊产业的国际竞争力已迫在眉睫。对内蒙古牧区放牧羊的福利养殖现状进行分析评估, 以期为加速推进内蒙古牧区放牧羊福利养殖提供参考。 相似文献
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Rafael S. Spurio Adriana L. Soares Rafael H. Carvalho Vivaldo Silveira Junior Moisés Grespan Alexandre Oba Massami Shimokomaki 《Animal Science Journal》2016,87(2):277-283
Throughout the chicken production chain, transport from farm to the commercial abattoir is one of the most critical sources of stress, particularly heat stress. The aim of this work was to describe the performance of a new prototype truck container designed to improve the microenvironment and reduce the incidence of pale, soft and exudative (PSE) meat and dead on arrival (DOA) occurrences. Experiments were carried out for four different conditions: regular and prototype truck, both with and without wetting loaded cages at the farm (for bird thermal stress relief) just before transporting. While there was no difference in the DOA index (P ≥ 0.05), the prototype truck caused a reduction (P < 0.05) in the occurrence of PSE meat by 66.3% and 49.6% with and without wetting, respectively. The results of this experiment clearly revealed a low‐cost solution for transporting chickens that yields better animal welfare conditions and improves meat quality. 相似文献
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An epidemiological study was conducted in 18 dairy herds with the objective to characterize those groups of cows where skin injuries to the body and thighs occurred most frequently. Data were analyzed with multivariable logistic regression. The epidemiologic patterns were different in first and later lactations. In first lactation some degree of injury occurred among 7.7% of 1793 cows. For most cows occurrence of sole ulcer was positively associated with injury while occurrence of heel horn erosion was negatively associated with injury. The association between injury and body weight differed depending on month of calving (significant interaction). Injuries occurred most frequently among high yielding cows. Severe reproductive, metabolic, and/or infectious diseases were associated with injuries. In later lactations some degree of injury occurred among 13.4% of 832 cows in lactations 2 to 9 where severity of injury increased with lactation number. Injuries occurred least frequently at examinations made in the January to March. They occurred most frequently among cows with sole ulcers. Calving in March through October was associated with injuries especially if the cows were treated for limb disorders. Most cases of injuries occurred early or late in lactation or among high or very low yielding cows in lactations 2 to 9. 相似文献
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规模化、集约化肉牛养殖方式在一定程度上可以降低生产成本,是提高生产效益的有效途径。然而,集中式、拴系式、高密度的生产方式下,常常导致肉牛的动物福利得不到有效保障,会对肉牛的生长和健康产生不利影响。改善肉牛动物福利可提高生产性能和养殖效益,实现绿色健康可持续发展。文章介绍了动物福利的概念、肉牛在饲养管理中的福利标准要求,以及在肉牛养殖过程中动物福利的重要意义,同时对我国肉牛生产福利的研究发展进行了展望,以期为生产实际提供指导和参考。 相似文献
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Daisuke KOHARI Takami KOSAKO Michiru FUKASAWA Hideharu TSUKADA 《Animal Science Journal》2007,78(4):413-416
We examined the role of trees as grooming objects in grazing pasture and investigated their necessity. Four grazing Japanese Black cows were used. Experimental pastures with restricted (RST) and released (RLS) grooming with trees were established. Examination was carried out for 24 h in each RST and RLS. The respective frequencies and duration of self‐grooming, allo‐grooming (social grooming) and grooming with trees was recorded by a continuous scan sampling method, and maintenance behavior was recorded by a 2‐min group animal scan sampling method. Grooming with trees in RLS occurred 29 ± 12 times/24 h and for 1342 ± 475 s/24 h. Total frequencies and duration of grooming in RLS tended to increase from that in RST (P = 0.08, P = 0.06, respectively). However, self‐grooming and allo‐grooming exhibited no differences. The results indicate that cattle may enrich their grooming through the use of trees if the latter are available. Furthermore, they may not substitute grooming with trees with other forms of grooming if no trees are available in the grassland. No difference was observed in the general proportion of their maintenance behavior. These results suggest that trees in grassland provide a good environmental enrichment object that satisfies cattle's potential needs of grooming and did not restrict their general behavior. 相似文献
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Petherick JC McCosker K Mayer DG Letchford P McGowan M 《Australian veterinary journal》2011,89(4):131-137
Objective To determine the value of peripheral blood concentrations of cortisol, creatine phosphokinase (CPK), aspartate aminotransferase (AST), non‐esterified fatty acids (NEFAs) and haptoglobin as indicators of welfare in Brahman heifers spayed by either the Willis dropped ovary technique (WDOT) or the flank laparotomy method. Design A total of 24, 2‐year‐old Brahman heifers were allocated to: crush (head‐bail) restraint alone (Control, n = 5); crush restraint and ear‐punch (Ear‐punch, n = 5); crush restraint, WDOT spay and ear‐punch (WDOT, n = 9); or crush restraint, elecrtoimmobilisation, flank spay and ear‐punch (Flank; n = 5). Cattle were blood sampled frequently to 8 h, and then daily to day 4 and were monitored to 42 days post‐procedure. Peripheral blood concentrations of bound and unbound cortisol, CPK, AST, NEFAs and haptoglobin were determined. Results Concentrations of plasma bound cortisol peaked in the spayed heifers 3–4 h post‐procedure; values in the Flank (1603 nmol/L) and WDOT (1290 nmol/L) groups were similar and significantly greater (P < 0.05) than in the Controls (519 nmol/L). Flank heifers had elevated plasma haptoglobin levels to day 4 postprocedure. Liveweights were significantly lower in the spayed compared with the Control heifers at 21 and 42 days post‐procedure, with liveweight gains also significantly reduced at day 21. Conclusions Bound cortisol responses in spayed heifers were elevated to 6 h post‐procedure and similar in WDOT‐ and flank‐spayed animals, indicating comparable levels of pain and stress. An inflammatory response, indicated by haptoglobin concentrations, was sustained for longer in Flank than in WDOT spayed heifers, suggesting longer‐lasting adverse effects on welfare from flank spaying than WDOT spaying. 相似文献
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MC Playford I Evans JB Lloyd P Lawton AR Rabiee IJ Lean 《Australian veterinary journal》2012,90(11):415-422
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The effect of presenting a companion's face picture on social isolation stress was assessed by saliva sampling in cows. Three Japanese Black test cows and another companion cow were used. At 09.00 hours, one of the test cows was housed in an experimental pen with the companion in a neighboring pen. At 11.30 hours, the test cow was socially isolated by taking the companion out the neighboring pen. At 12.00 hours, the test cow was exposed to one of four treatments until 15.00 hours; presenting a blank picture (P‐Blank), a white‐ground picture of the companion's face (P‐Com) or an unfamiliar Holstein's face (P‐Hol), or the companion in the neighboring pen and a blank picture (Com). The cows were randomly exposed to all treatments. The cows' saliva were sampled for measuring salivary cortisol and chromogranin A concentrations (Sa‐Cort, Sa‐ChA) at 11.30, 12.00, 12.30 and 14.00 hours. At 12.00 hours, Sa‐ChA was higher than that at 11.30 hours (P < 0.01). At 12.30 hours Sa‐ChA of Com and P‐Com were lower than that of P‐Blank (P = 0.09, P = 0.08). At 14.00 hours Sa‐Cort of Com was lower than that of P‐Blank (P < 0.01), but Sa‐Cort of P‐Com was higher than that of P‐Blank (P < 0.01). It is suggested that P‐Com might decrease isolation stress only a short time, but afterward induced stress in cows. 相似文献
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Stella M. Huertas Frank van Eerdenburg Andrs Gil Jos Piaggio 《Veterinary Medicine and Science》2015,1(1):9-15
The objective of this work was to characterize bruises in bovine carcasses in Uruguay and to evaluate the economic impact. Thirteen abattoirs were visited during 2 years and bruises were identified, classified, and quantified by zone and degree (depth and size). One hundred carcasses were separated and bruises were cut out and weighed separately. From a total of 15 157 carcasses observed, 60.0% had at least one bruise; 42.0% of these had bruises on both sides. The expensive butt zone was the most damaged, followed by rib, shoulder and loin, respectively. The mean weight and standard error of the condemned trimmed meat was 1602 ± 212 g. It suppose a loss of 899 g per animal slaugtered in Uruguay. In a country sending 2.5 million heads of cattle to be slaughter yearly, this indicates an important financial loss. Improving transport conditions and personnel skills will probably result in a better welfare for the animals as well as better financial profit. 相似文献