Dairy Learning Lab 2. Cow Health & Reproduction. Gidi Smolders

Transcription

1 Dairy Learning Lab 2 Cow Health & Reproduction Arusha, Tanzania Kasisi, Zambia Mbarara, Uganda June June June Gidi Smolders organimprove@upcmail.nl

2 Outline of programme Day 1 a) Intro on health management b) On natural behaviour c) Looking at healthy cows d) On reproduction Day 2 e) On preventive management f) On diseases and illnesses g) On farmers solutions h) On advisory

3 a) Intro on Cow Health & Reproduction Health management as 3-step approach

4 Step 1: Preventive measures

5 Step 2: Growing conditions

6 Step 3: Direct treatment

7 Why keep animals healthy? Disease Tuberculosis, Q-fever Brucellosis Salmonellosis Leptospirosis Listeriosis E-coli Anthrax Liver fluke Rabies Tape worms Lice, mites, ringworm Paratuberculosis Transmit to humans via Air, milk Milk, wounds, contact Faeces Water and food Cheese, water, vegetables Meat, faeces Meat Contaminated greens Bites, wounds Meat Contact Milk

8 Why keep animals healthy? Happy dairy cow => happy farmer Animal welfare Higher production More milk Better weight gain Better reproduction More years of production Lactation curve Lower replacement rate Lower veterinarian costs Less medicine in products and environment

9 b) on natural behaviour

10 Natural behaviour Herd animals like to synchronise behaviour Herd ranking system Fleeing as a defence mechanism Dairy cow needs are: Fodder Water Light Air Rest Space A friendly farmer

11 Do: Always feed and fresh water

12 Do: Clean surface, but not slippery

13 Do?: Mutilations cause/reduce stress Dehorning Removing extra teats Taildocking Clipping part of ear Branding numbers Tattooing numbers

14 c) Looking at healthy cows

15 Do: watch, reflect, act and learn Watch your herd a few times a day and check: What cow behaviour do you see? Do all cows synchronize their behaviour? What causes this behaviour? What is your reflection? Is action required? Why? Why not? What do you learn from this action?

16 What to look for in individual cows? Awareness/attent Shiny coat, happy lines Development in relation to age Cleanliness Body condition Rumen fill and ruminating Skin damages/swellings/hairless patches Locomotion Behaviour Discarding from eye, nose, vulva Claws Signs of heat

17 Welfare quality assessment in 7 steps hindquarter neck/ shoulder/ back tarsus (incl. hock) flank/ side/ udder carpus

18 1. Cleanliness Acceptable Dirty Region WQ Score 0 WQ Score 1 lower hind legs (coronary band to hock) little or no dirt, minor splashing plaques of dirt above the coronary band (a) hind quarter and flank (upper leg, flank and rear view excluding udder udder no or minor splashing of dirt no or minor splashing of dirt plaques of dirt (a) plaques of dirt on udder or around the teats (a) teats no dirt present ANY dirt on teats (b) Ad a. Plaques of dirt are three dimensional and size the palm of a hand, or more than half the area under consideration is covered Ad b. Record 2 if area covered with dirt has diameter of > 2 cm.

19 2. Body condition: average is OK

20 3. Hairless/lesion/swelling

21 4. Check faeces consistency 1. thin fluid, pea soup, slop, no rings or dimples. 2. thin pulp, faeces less than 2.5 cm high, rings. 3. medium pulp, like porridge, faeces 3 to 4 cm high, rings, dimples, sticking to the tip of your gumboot. 4. thick, not sticky, faeces 5 to 8 cm high, no rings, dimples. 5. Compact faeces, faeces higher than 8 cm

22 5. Discharge eyes, nose, vulva

23 6. Locomotion score 0 Not Lame: Timing of steps and weight-bearing equal on all four feet. 1 Lame: Imperfect temporal rhythm in stride creating a limp (irregular foot fall uneven temporal rhythm between hoofbeats, weight not borne for equal time on each of the four feet) 2 Severely Lame: Strong reluctance to bear weight on one limb, or more than one limb affected.

24 7. Claw assessment The 6 criteria of a normal claw are: A plain surface Claws are not bended Halves same length (cows: 7.5cm) No or little space between claws contact to surface of the whole claw Angle to ground near 50 If 2 criteria of a normal claw are not fulfilled on at least one of the examined claws, then you score overgrown claws.

25 d) On reproduction

26 Oestrus cycle

27 Time to breed

28 Managing cow fertility Ideally one service should give pregnancy Heifers in good condition need 1.1 service which means 90% pregnant after one service High yielding cows, skinny cows are less fertile: Cost of more services vs calving interval Consider recovery time for high yielders High quality feed to skinny cows. How long do you continue breeding ( 4, 5, 6,7. times?

29 Calving interval determined by 1. Planned interval between calving and next mating/insemination When you want a calving interval of 1 year, mating should be within tree month post partum 2. Heat detection When do you watch your animals Do cows show heat symptoms 3. Pregnancy rate after first mating or insemination Each mating increases the interval with about a month 60% pregnancy rate means that 4 out of 10 cows need at least one more mating 4. Early embryonic death Happens after 2-3 month, cycle starts again

30 Breeding calender

31 Reproductive problems (1) Retained placenta: afterbirth should drop within 8 hrs. No treatment, oxytocin or prostaglandins, antibiotics. Anoestrus: no heat signs for a long time. Adequate feeding of roughage, minerals, trace-elements Endometritis: inflammation of mucus membrane of uterus, after abnormal delivery. Hygiene, disinfect calving area Pyometra: pus in uterus caused by Corynobacterium pyogenes. Estrogens and oxytocin.

32 Reproductive problems (2) Silent heat: no regular signs or skips a period. Adequate quantity and quality roughage, minerals, trace-elements, Improve heat detection. Vibriosis: early embryonic death, infertility caused Campylobacter fetus. Artificial Insemination or bulls without infections. White heifer disease: in BBl and Shorthorn (white coat)

33 Day 2 e) On preventive management

34 Cows get used to pathogens on farm But, new pathogens can enter the farm via: Bringing in new cows to the farm Using common grazing areas Receiving visitors Measures: Do not introduce animals from other farms You avoid contact with animals from other farms Make appointments about sanitation/vaccination Indigenous breeds are less sensitive than exotic breeds Boosting the immune system

35 Boosting the immune system = less treatments Inborn and gained immunity (resistance) First barrier: intact skin and gastric juice Breeds have different immunity Pathogens influence immunity * vaccination against specific pathogen Stress lowers immunity: * caused by naturalness, housing, feeding, care, disease, attitude farmer High resistance => self curing => less treatments Treatment: Yes or no!! Profitable/prospects/prognosis

36 Prevention during calving (1) Calving area is clean, dry, quiet Provide help if the cow shows signs of difficulty during the birth. If delivery takes longer than 24 hours and the allantoic sac has not protruded, the cow will require assistance from a veterinarian. If there has been no expulsion of the foetus or any contractions for more than two hours after the rupture of the allantoic sac, veterinary assistance will be required. During this period, there is the possibility of milk fever, uterine prolapse, or downer cow occurring.

37 Prevention during calving (2) Foetal membrane should occur 3-8 h after calving. If it is retained over 12 h, the cow will require assistance. Remove the foetal membrane from the calving area or pen floor, clean the pen and the rearing area of the dam to reduce risk of infection by flies. Feed enough good quality and palatable feed because the cow has less appetite and may remain stressed from delivery. There is risk for retained placenta, metritis, milk fever, uterine prolapse and mastitis. The immune system is low from two weeks before till two weeks post partum. Avoid contact with animals with contagious diseases.

38 Prevention of claw disease:

39 Prevention of mastitis From GART manual Milking place: quiet, clean, relaxed Cow: tasteful feed, wipe udder/teats, (restrain?), massage udder, clip hair Milking technic: check milk for flakes, squeeze the milk, not pull teats, 12 h interval, antiseptic teat dip, treat lesions Milking equipment: clean after milking and dry in sun

40 General prevention of eye problems Apply tick grease or other repellants around the eyes. Manually remove ticks. When spraying make sure NOT to spray directly into the eye. Do not hit the animal around the eyes Do not herd where there are many thorny plants or plants with irritating sap Use only leafy trees and shrubs for fencing in animal pen Separate animals with infectious eye diseases Control Camel pox Pink eye Eye worms Squamous Cell Carcinoma

41 Vaccination Age Vaccinate against Application Remarks 3-8 months f or heifers Brucellosis S/C - Once in a lifetime During threats of outbreak the whole breeding herd may be vaccinated. S19 live vaccine can cause brucellosis in humans. 3 months to 3 years Anthrax and Blackquarter S/C - Yearly or upon warning of impending outbreak Vaccine is cheap. Anthrax is deadly for humans and animals. 2 weeks and above CBPP Yearly in endemic areas. In other areas upon warning of impending outbreak. (through tail tip). To be administered by trained veterinarians. Animals can loose their tails from this vaccination. 1 month and above ECF S/C under the ear. Vaccine is commercialized in Tanzania. Only to be used by licensed Veterinarians 2 weeks and above Foot and Mouth disease S/C - Every 6 months in endemic areas. Different strains exist. Consult you veterinarian on the choice of vaccine. 3 months and above Rabies I/M or S/C - Annually and when there is an outbreak A vaccine that can protect already affected herds (within a week after the outbreak) 6 months and above Rift Valley Fever S/C - After heavy rains or when there is a risk of outbreak. Pregnant animals may abort if live vaccine is used. In humans RVF can be deadly so control is very important 1 month and above Lumpy skin S/C - Preventive when there is a risk of outbreak. With live vaccine, separate cattle from sheep and goats, as the vaccine can cause pox in sheep and goats.

42 Preventive measures are less expensive than the cost of diseased animals Keep robust breeds/crosses Prevent heavy calving Don t introduce strange animals Avoid contact with neighbours animals Provide adequate feed and water Meet requirements of animals Provide adequate shelter Provide adequate care Vaccinate against diseases you cannot avoid

43 f) on diseases and illnesses

44 Causes of disease organism Disease Treatment Virus flue Sanitation, desinfection, vaccination Bacteria Tuberculosis, mastitis, salmonellosis Protozoa Coccidiossis Antibiotics Fungi Ringworm Prevention Antibiotics, vaccination. Internal parasites Worms, liver flue Dewormers, rotational grazing External parasites Lice, flies, ticks, mites Antiparasitca Diet composition Off feed, acidosis Supply proper diet Minerals Milk fever Supply minerals/ trace-element Plastic, wire, soil Digestition Clean surroundings

45 Respiratory diseases Haemorrhagic Septicaemia (HS): Vaccination, antibiotics, quarantine Contagious Bovine Pleuro-Pneumonia CBPP: Vaccination, isolated sick animals East Coast Fever: Vaccination, tick control (dipping twice/week), pour on, pyrethrum grease in ears and below tail base Pneumonia in young calves: Colostrum within 3 h, hygiene, dry place, no cold draft, antibiotics Tuberculosis: Hygiene, strengthen immune system, isolated sick animals, sterilize milk for calves, sunlight kills bacteria

46 Different ticks (most important on cattle) Blue tick, or cattle tick (Boophilus sp). Transfers Anaplasmosis and Babesiosis Brown Ear tick (Rhipicephalus sp) around the ears an under the tail. Transfers East Coast Fever (ECF) Hyalomma ticks. Transfers Sweating sickness Amblyomma ticks, boring right into the skin of the animals, difficult to remove by hand. Transfer Heartwater disease.

47 Tick born disease (1) Anaplasmosis, acute fever caused by a parasite Anaplasma marginale, which multiplies in red blood cells, causing severe anaemia. Incubation period is 2-12 weeks. Dipping/spraying, resistance, vaccination. Babesiosis (Redwater), fever producing disease by the protozoan parasites Babesia bigemina and Babesia bovis. Dipping/spraying, resistance, vaccination. Bovine Petechial Fever, haemorrhages, fever, oedema, and abortion caused by Ehrlichia ondiri. Keep cattle away from forest edges and from reed- and bushbuck

48 Tick born disease (2) Heartwater, caused by Ehrlichia ruminantium. Indigenous breeds more resistant. Dipping/spraying, don t introduce infested stock, infection&treatment method Sweating sickness, toxic condition that affects the skin and visible mucous membranes, caused by a toxin attracted to skin, secreted by females of Hyalomma truncatum. Dipping/spraying, resistance, Let ticks attached for 4 days to produces immunity.

49 Flies and Mosquito Borne Diseases 3-Day Sickness (Ephemeral Fever), most recovered cattle have life-long immunity, spread by midges and mosquitoes Vaccination in endemic areas, no treatment needed. Bluetongue, an infectious, non-contagious virus disease spread by Culicoides imicola. Vaccination, pour on Rift Valley Fever (RVF), accute or peracute, viral disease. Vaccination, pour on, confinement of stock. Trypanosomiasis, protozoal infection caused by genus Trypanasoma and spread by Glossina tsetse. Tolerant breeds, trapping flies, dipping/spraying, pour on

50 Managemement disease (1) Frothy bloat, gas in their stomach because of lush green pastures. Free gas bloat is an obstruction of the oesophagus. Feed some dry feed before grazing, avoid abrupt changes in diet. Supply anti-foam agents. Bovine Viral Diarrhoea, Incidence is low but mortality is high. Infection in different stages of pregnancy creates persistent infected calves, antibody negative calves, abortion. Remove infected calves from the herd.

51 Management disease (2) Enteroxamia (Dysentery) acute diarrhoea, abdominal pain and convulsions. Death may occur within a few hours, but less severe cases may survive. Vaccination of the dam Foot and mouth disease, highly contagious viral infectious disease. Disinfection, vaccination Haemorrhagic Septicaemia (shipping fever) is an acute bacterial disease, caused by Pasteurella multocida. Vaccination, boost immune system, herd quarantine

52 Management diseases (3) Mastitis, not visible (sub-clinical) and visible (clinical). Different pathogens and other causes. Preventive solutions preferred (changes in management) and as less treatments as possible. Milk fever does not occur in indigenous cows. It is caused by too low calcium available at the onset of lactation at calving. To keep mobilisation of Ca from the bones active, feed low calcium diet in the dry period Acetonemie occurs when fat from the body is used in times of energy shortage, at peek production. Feed more energy to prevent using own body reserves Hypomagnesia occurs when magnesium is low and Potassium and protein is high. Provide magnesium in diet, licks.

53 Shortage of minerals, trace-elements and vitamins Element Signs of shortage solution Calcium (Ca) Phosphorus (P) Zinc (Zi) Copper (Cu) Magnesium (Mg) Bones, milk fever Bones, digestion Hair, skin, claws Hair, blood, fertility Neromucular system Potassium (K) Low feed and water intake Young plants Sodium (Na) Chloride (Cl) Cobalt (Co) Feed intake, water metabolism Vitamin B12 Vitamin A Still birth Fresh grass Vitamin D Bones, low growth Ca + sunlight Vitamin E Fertility, immunity

54 Transmission of mastitis Via the hands of the person milking Through milking cloth Via flies Via the liners of milking cup (if milking machine is used) Via the mouth of the suckling claves Through environmental contamination of the stable or the outdoor run (wet and dirty beddings) Through contaminated water Via contaminated teat dips Via intra-mammary infusions Teat skin lesions and wounds

55 Diarrhoea of the young calf (1) Salmonella infections, 14 days - weaners. Faeces foul smelling, with blood, clots and mucous. High fever. Calves lose weight and die despite antibiotic treatment. Clostridial diarrhoea, few days old strong calves with good appetite. Onset sudden with depression, weakness, bloody diarrhoea, abdominal pain and death within few hours. Clostridia produce a toxin which kills very fast. Most die before treatment can be started. Viral infections, due to Rotavirus or Coronavirus, 5-15 days old and up to 3 months of age. Most continue to drink milk. Faeces are several days soft to liquid, containing much mucous. Response to fluid and electrolyte and nutritional support is usually very good.

56 Diarrhoea of the young calf (2) Cryptosporidiosis, in the second week of life, with persistent diarrhoea not responding to treatment. Mixed with other organisms it may be severe and life-threatening. Coccidiosis, diarrhoea up to weaning age. Thin watery with blood look red at first and become dark. Calves may not eat and become dehydrated. Dietary diarrhoeas, calves >3 weeks old and shows pasty faeces of a gelatinous consistency. Initially calves are bright and alert and have good appetites but if the diet is not corrected they become weak and emaciated

57 Diseases of the skin Bovine Farcy, caused by Nocardia farcinica. Prevent wounds. Isolate or cull affected animals, no cure. Elephant Skin Disease (Besnoitiosis) affects skin, subcutaneous tissue, blood vessels and mucous membranes. Protozoal parasite Besnoitia besnoiti. Separate sick animals, control ticks/flies. Lumpy Skin Disease (LSD) caused by a poxvirus. Vaccination Pseudo-lumpy Skin Disease (PLSD), harmless herpes virus. Mange, small mites under the skin. Don t introduce it in the herd, acaricide dipping, washing. Photosensitization, plant poison and sunlight. Remove from paddock and from sun Worm Nodule Disease, small lumps full of worms and larvae just under the skin. Ivermectin.

58 Worms or nematodes Adult tape (segmented) worms, different types with different livecycles \ and hosts. Drugs. Larval tape worm (different types in humans and dogs). Treat humans and dogs, use pit latrines. Liver fluke (fasciola gigantica and fasciola hepatica). Avoid wet land, rotational grazing Lung worm (Dictyocaulus viviparous). Boost resistance, remove animals to clean paddock, vaccinate. Round worms (different types with dif. livecycles), rotational grazing, grazing >6 cm, rest pasture, drugs.

59 Life cycle gastrointestinal parasites

60 Life cycle giant liver fluke weeks 6 weeks

61 f) on farm solutions

62 Prevention: the right breed What do you want. What can you offer. What fits best.

63 Prevention: improved housing

64 Prevention: hygienic measures

65 Conditions: feeding ration

66 Conditions at the start of lactation At the start of the lactation, increased risks of mastitis, metritis, abomassal displacement, acidosis and ketosis. Weight loss after calving means insufficient energy in the diet. On large farms cows could be grouped for feeding and management according to their milk production. One month after calving check the reproductive tract for uterine involution, metritis and ovarian functions. The cow should show signs of oestrus within 60 days postpartum. cows requiring more than 3 inseminations need a check by a vet.

67 Conditions: calf care first 3 days A new-born calf needs to be licked by the cow to stimulate respiration and blood circulation. Remove slime, water from the nose and mouth. Cut the navel 3 and dip in iodine. Feed colostrum within 2 hrs after birth (10-15% of the calf s birth weight). Absorption of antibodies is highest in the first 6-8 h. Colostrum is high in nutritive value and contains antibodies.

68 Conditions: calf care first month Feed milk twice a day. (clean buckets and teats after use) Feed the calf concentrate and roughage from week 2 onwards. Easy digestible solid food stimulates rumen development. Clean water must be available at all times. Common health problems during this period are: navel-ill, diarrhoea (scours), respiratory infection (pneumonia) and arthritis

69 Conditions: calf care till weaning Calves should be dehorned at one to two months of age. All female calves should be vaccinated against brucellosis (S19) at three to eight months of age. Weaning at about three to four months of age calf is able to eat roughage and 1 kg concentrate per day body weight between kg (depending on the breed). De-worm the calf against roundworm, tapeworm and flukes. Also, eliminate external parasites such as ticks by spraying. In this period problems to be aware of, are parasites, bloat and arthritis.

70 Conditions: care up to 18 month Body weight should not be less than 270 kg in crossbred or 300 kg in pure-bred cattle at first service. Heat detection to determine the right time for breeding. Heifers being over 18 month not seen in heat and heifers requiring repeated insemination (more than three times) need to be checked by a veterinarian. Pregnancy diagnosis: 45 to 60 days after the last insemination. Common health problems that occur during this age are, three-day sickness (ephemeral fever), tick fever, and other infectious diseases and parasites.

71 Condition: heifer care pre partum Feed with good quality roughage and concentrate as a supplement to pregnant heifers in poor condition. Mineral supplement can be used for pregnant heifers to prevent shortages. Vaccinate against FMD, haemorrhagic septicaemia and other diseases as a vaccination program in the dairy region. De-worming for external and internal parasites should be carried out routinely. Be alert for heifers mastitis (mastitis before calving) and abortion.

72 Conditions: drying off and dry period Check for pregnancy before drying off the cow. Dry period of two month (not longer). During the first week of the dry period the immune system is low. So take care if it were your best cow. Prevention of mastitis during the dry period and after calving is important. Maintaining the routine vaccination program. Treat for internal and external parasites. Hoof trimming can be done during this period. Maintaining good feed management during the dry period.

73 Conditions: cows with painful claws do not eat Prevention: feeding, housing, good floor, regular food bath with copper, zinc, formaldehyde Treatment: pedicure when necessary; medicine in case of interdigital dermatitis, mortellaro

74 Direct treatment (3 rd step)

75 Treat with chemicals only when really needed Be aware: What to use it for Antibiotics don t work against virus Respect the withdrawal period Some days - weeks after last use Cause residuals in animal products Cause resistant pathogens Antibiotics are not effective anymore Can be harmful for the soil Via manure in the soil

76 SCC at drying off and in begin of lactation, with and without antibiotics celgetal*1000 antibiotics no antibiotics week

77 Use local available therapy

78 Radical treatment: cull animals When animals don t cure, culling might be the best solution for the animal and the farmer Don t infect other animals Save medicine and time Don t suffer longer Don t take a place of a healthy animal Save feed for rest of the herd Care can be given to other animals

79 Manuals

80 Heifer international Section about - Appropriate breeds - Housing - Keeping dry cows - Calving and diseases - Good calf management - Breeding - Health problems - Disease prevention

81 We effect Sections about - Appropriate breeds and breeding - Housing - Reproduction and fertility management - Management of breeding stock - Dairy hygiene, quality and standard - Calf rearing - Milking - Animal health and disease - Disease prevention

82 Kasisi training centre Sections about - Management of the pregnant animal - Calf and heifer rearing and housing - Young stock health - Milking - Dairy animal health and welfare - Animal health management

83 NAADS Uganda Sections about - Breeds (no local) - Young stock rearing incl. some diseases - Milking - Drying off

84 Thank you for sharing When you can t digest it all in once, Check out