![]() ![]() We monitored all healthy female Holstein and Jersey calves born between July and October 2021, for a total of 33 heifers (24 Holsteins, 9 Jerseys) in this study. Further research is warranted to understand ways to improve the ear-tagging process. Indeed, impressions along the top of tag, likely caused by rubbing against the ear, were observed for nearly the full duration of the study. This suggests that extrinsic factors, such as mechanical disturbance and irritation, may have contributed to prolonged wound healing. We found that impressions, crust, tissue growth, and desquamation were still seen in many calves by 12 wk of age. Ears were scored as “piercing only” when tissue around the ear tag was intact. We developed this system to score the presence or absence of external tissue types related to piercing trauma or mechanical irritation along the top of the tag (impressions, crust, and desquamation) and around the piercing (exudate, crust, tissue growth, and desquamation). This approach generated 10 to 22 observations per calf that were analyzed using a novel wound scoring system. ![]() Calves (n = 33) were ear tagged at 2 d of age, and wound photos were taken weekly until 9 to 22 wk of age. Our objective was to develop a detailed scoring system and use it to quantify wound healing in dairy calves with plastic identification tags. Although it is known that ear tag application causes damage, little is known about the duration and process of wound healing associated with this procedure. Ear punches are kept clean and dipped in disinfectant between each animal.Application of ear tags in cattle is a common husbandry practice for identification purposes.Ear marking pliers are kept well maintained and sharpened before use.When ear marking, producers should ensure that: In addition, all cattle treated with a hormonal growth implant must be permanently identified using the HGP triangular ear mark in the middle of the right ear. In some states livestock must be ear marked prior to sale. Producers should check with their state department of primary industries as to the legal requirement to ear mark livestock in their State. It is possible that these requirements may change as part of the development of new Australian Standards and Guidelines for the Welfare of Animals. The requirement to ear mark (ear notch) livestock varies around Australia. Keep the applicators clean and dip in disinfectant between each animal (when in use).Keep ear tag applicators in good working order.When applying NLIS devices producers need to: NLIS devices are available from NLIS state authorities. NLIS devices include the Property Identification Code (PIC) or the brand in Western Australia. NLIS devices for sheep and goats can either be a visual ear tag or an RFID ear tag. NLIS devices for cattle can be either an ear tag or a rumen bolus/visual ear tag combination. The NLIS is Australia's system for the identification and tracing of cattle, sheep and goats for biosecurity, food safety, product integrity and market access purposes. ![]() It also has business benefits by enabling livestock to be identified on-farm, leading to improved management. Ear tagging and ear marking are used to identify livestock.Įar tagging is an essential part of the National Livestock Identification System (NLIS) and ear marking or notching is a mandatory requirement in some states. ![]()
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