Level II Agricultural Business Operations Shiny coat Steady breathing Bright eyes Body temperature Clear warm nose Normal behaviour Pricked ears Feed intake Normal faeces Milk yield Dull coat Laboured breathing Sunken eyes High/Low temp Runny nose On its own Droopy ears Off feed Diarrhoea Hunched Consumer perception Loss of production Welfare issues Loss of health status Antibiotic use / resistance Milk price Financial losses Sickness/death Inflammation of the mammary gland (udder) Infection caused by microorganisms, mainly bacteria, that invade the udder Multiply & produce toxins that are harmful to the mammary gland A healthy cow is essential to ensure a profitable dairy business Mastitis is one of the main reasons for culling cows in N. Ireland In an average dairy herd 25 out of every 100 cows are affected by clinical mastitis This session will look at prevention, treatment and impact on health and welfare Direct Costs Indirect Costs Treatment Higher culling rate Your time Risk of fatality Vets time Replacement costs Discarded milk Reduced yield Reduced herd selection for other weaknesses Average: £177/case Duct blocked by scar tissue following mastitis Gland cistern Teat cistern Milk secreting cells Single alveolus Teat sphincter muscle Teat canal Teat orifice Clinical Mastitis ◦ Visible change to the milk and/or udder. ◦ Cow may appear unwell. ◦ Can be either chronic, acute or toxic (extreme cases). Sub-clinical Mastitis ◦ Cow appears well - no visible changes to milk. ◦ Observed through milk recording; SCC >200,000. Examination of foremilk before applying clusters Check milk filter for clots after milking Examine udder for signs of heat, redness, swelling Reduced yield No clinical signs of disease - high somatic cell count (SCC) SCC’s are mainly white blood cells that combat infection Increased numbers indicate the presence of infection Bulk tank SCC indicates level of sub-clinical mastitis in herd Detected by milk recording and California milk test Contagious ◦ Caused by bacteria found on cow’s udder/teats ◦ Spreads from cow to cow at milking time, e.g. via hands, clusters and worn liners ◦ Udder cloths can transfer infection ◦ Milk high Somatic Cell Count cows last Environmental ◦ Caused by bacteria in the cow’s environment, e.g. cubicle bed and dung ◦ Bacteria transferred to teats/udder between milk ◦ Bacteria enters teat canal at milking Summer ◦ Affects dry cows and heifers ◦ Mixture of bacterial infections ◦ Quarter swells rapidly with thick yellow foul secretion ◦ Irritation and kicking due to flies ◦ General illness The Five Point Plan: 1. Treat and record all cases promptly. 2. Disinfect teats. 3. Cull chronic mastitis cases. 4. Use dry cow therapy. 5. Maintain milking machine. Early treatment essential to limit spread Bacterial identification required for treatment Range of treatment options: ◦ Short or long acting intramammary antibiotics ◦ Injectable antibiotics ◦ Anti-inflammatory treatments ◦ Drying off Select appropriate treatment Milk out infected quarter Hygiene - disinfect teats & wear gloves Partially insert antibiotic tube into teat canal and infuse contents Massage antibiotic into quarter Teat spray all teats Clearly mark cow Follow milk with-hold instructions Record details in vet medicine book The only way to determine the actual level of mastitis in the herd is to record incidence Record cases as part of daily management. Record cow no., teat affected & treatment Monitor to identify trends in cases, SCC, repeat offenders, etc Benchmark and implement a plan for improvement If incidence of clinical mastitis is high Identification of invading organism can speed up treatment/cure Hygiene critical at sampling One of the most effective mastitis control measures, if done properly Pre milking disinfection can reduce the incidence of environmental mastitis by 50% Post milking disinfection prevents bacteria entering the teat canal until it is fully closed Cover entire length and diameter of teat Use a good quality teat dip product Informed decision based on SCC Bacteriology Age Stage of lactation History Other e.g. Lameness, infertility The aim is to ..... Eliminate existing infection Prevent new infections during dry period Reduce incidence of post calving mastitis Reduce somatic cell counts Reduce incidence of summer mastitis Targeted use of antibiotics Consult vet re treatment Teat sealants Identify and fix problems early – Service regularly Replace rubber & silicone pipes if cracked/perished Change cluster liners every 2000 -2500 milkings Air filter should be clean Check vacuum level against parlour recommendation Air bleeds e.g. on clusters should be clear Monitor pulsation Ensure cows not over or under milked Farmer ◦ Keep hands clean ◦ Operate effective milking routine 5% more milk Teat health maintained Transfer of bacteria minimised Early identification and treatment of mastitis Assess the following areas: Ventilation Cubicles - number design, dimensions Flooring – cleanliness, slippiness Cubicle bedding – type, frequency Dry cow/calving pens cleaned and disinfected regularly Udder hygiene at grass is better if: Roadways and gateways maintained. Avoid poaching around water troughs and gateways. Use electric fences to exclude cows from heavily poached areas. Promote cow cleanliness - clip tails, udders and flanks. Feed to avoid very wet dung Avoid rushing cows when moving them Pre and post milking teat spraying and dipping Avoid allowing cows to lie down for 20 minutes after milking allows teats to close properly Milk cows with mastitis or high cell counts last Cow brushes improve cow cleanliness Clipping tails & udders Cow brushes Mastitis is an infection of the udder caused by bacteria Significant impact on herd health Prevention is better than cure-promoting cow cleanliness and comfort and maintaining milking equipment will help to prevent mastitis The Five Point Plan is the foundation of any herd mastitis treatment and control policy What are the signs of lameness ? Uneven weight bearing. Nodding of head. Arching of back. Short strides. Slow walking speed. Lameness may be a problem on dairy farms Welfare issue as animal suffers Costly to dairy industry – loss of production & treatment A farm moving from average incidence of lameness to top 10% will save equivalent to 1ppl Can predispose animal to other diseases e.g. mastitis, ketosis and infertility Direct Costs Treatment Your time Vets time Discarded milk Reduced yield Indirect Costs Higher culling rate Extended calving interval Additional services Increased incidence of other diseases Total Cost Of Lameness Approx £4000 /100 Cows /Year Lameness causes pain 50 - 75% of cases are undiagnosed Most lameness in outer claw of hind limbs Identify cause by examination and trimming Foot Conditions Sole Ulcer White line disease Laminitis Skin Conditions Foul foot Digital dermatitis Calving ◦ Disrupts hoof horn formation Excessive standing ◦ Cubicle number and design Nutrition ◦ Feeding high levels of concentrates can lead to laminitis and lameness General management ◦ ◦ ◦ ◦ Wet hooves Poor floor surfaces Rough handling Hoof wear/poor trimming Treatment; Pare affected side so not weight bearing May need to apply shoe Remove any protruding tissue May need antibiotic Prevention; Encourage increased cow lying time Ensure clean, dry and maintained floors Identify potential nutritional causes Bacterial infections Excessive time standing Wet hooves Contaminated environment Introduction of carrier animals Treatment; Clean and dry lesion Antibiotic (topical and/or injection) Bandage – remember to remove/replace Footbath Prevention; Footbath regularly - any antiseptic will do (cheaper than antibiotic). e.g. Formalin Reduce time spent standing in slurry 1. Mobility scoring 2. Assess risk factors – Environment 3. Nutrition & Breeding 4. Foot bathing 5. Hoof trimming Scale 0-3 0 = Not lame 3 = Chronic lameness Regular scoring Early detection and treatment Identification of trends and causes Stocking rate in shed – 5% more cubicles than number of cows. Flooring - rough or slippery. Scraping down - at least twice daily. Cubicle design and bedding. Lanes and yards Grooved floor finish Gives cow extra grip Rubber flooring Well bedded cubicles Wide passages scraped regularly Clean Feet Well occupied cubicles Head to Head cubicles Well constructed lane Clean, smooth concrete Nutrition Major changes in diet at calving High proportion of cereal in diet Rumen acidosis can contribute to lameness Breeding Foot & leg conformation can affect incidence Foot characteristics are heritable Differences between and within breeds Foot colour suggested as having an effect Dark hooves – less prone to lameness Purpose - washing, disinfection, hardening hoof Choice of product? Ask vet advice re problem Footbath for three consecutive days per month Clean feet before footbathing - double bath Cow needs three strides – min. 3 metres Depth of 100mm of solution, keep clean & top up levels Used to help reduce the incidence of clinical lameness Aim Restore original balance to the foot while improving locomotion Detect hoof disorders before they develop into more serious lameness disorders Carried out by skilled operators Reduces clinical lameness Restores original balance to foot Improves locomotion Early detection of disorders Carried out by skilled operators Claw after foot-trimming Lameness is a costly problem Significant animal health and welfare issue Early identification and treatment essential Prevention is better than cure ◦ Regular foot trimming and bathing ◦ Pay attention to nutrition & breeding ◦ Suitable environment, clean housing and well maintained surfaces