🐄Calf Care and Early Management

The first six months of a calf’s life carry the highest mortality risk and the highest long-term impact on productivity. Management failures during this window — inadequate colostrum, poor hygiene, incorrect feeding — permanently reduce the animal’s lifetime output. This lesson follows the chronological sequence of management: pre-birth preparation (drying off the dam) → birth → first hours (colostrum) → first weeks (identification, weaning) → first months (feeding, health interventions).

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Drying Off the Dam (Pre-Birth Context)

Before the calf is born, the dam must be properly prepared. The dam should be dried off 6–8 weeks before expected calving. This is not optional — it is a biological necessity.

Why the dry period matters: The mammary gland contains secretory cells (alveolar cells) that produce milk. These cells need time to undergo programmed regression and then regeneration. If the dry period is too short, secretory cells are still in the regression phase when calving occurs — the next lactation begins with fewer functional cells and lower peak yield.

• Minimum dry period: 60 days (2 months)
• Inadequate dry period: subsequent lactation yield drops by 15–25%

Method of drying off: Reduce milking frequency gradually — twice daily → once daily → alternate days — over 1–2 weeks. Abrupt cessation causes udder engorgement and mastitis.

Pregnancy allowance: Feed extra concentrate mix of 1.25–1.75 kg/day as pregnancy allowance throughout the dry period.

Steaming Up (Lead Feeding): During the last 8 weeks of gestation, feed 1 kg extra concentrate per day. Three purposes:

1. Build body fat and protein reserves for the high energy demands of early lactation
2. Stimulate mammary gland development (more secretory tissue = higher peak yield)
3. Accustom rumen microbes to higher concentrate diet before calving — prevents digestive upsets post-calving

Laxative feed: Provide 3–5 days before and after calving: wheat bran 3 kg + 0.5 kg groundnut cake + 100 gm mineral mixture/salt.

Why laxative feed? Hormonal changes around calving (high progesterone and oestrogen) slow gut motility, causing constipation. The laxative ration: (1) keeps the gut moving to prevent impaction, (2) is easily digestible during the physiologically stressful calving period, (3) prevents milk fever through mineral supplementation.

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Care of the Newborn Calf

The first minutes of a calf’s life require a specific sequence of actions. Each step has a clear biological rationale.

Step 1 — Clear the Airways

Remove mucus from the nose and mouth immediately. If the calf does not start breathing:

• Press and relax the chest walls alternately with hands (manual chest compressions) — stimulates first breath
• Hold calf by rear legs, lift with head down — gravity expels amniotic fluid trapped in lungs

Both techniques help expel amniotic fluid from the respiratory tract and trigger the respiratory reflex.

Step 2 — Navel Cord Care

The navel (umbilical cord stump) is a major bacterial entry point. Disinfection is critical.

• Tie the cord 2–5 cm from the body
• Cut 1 cm below the ligature
• Apply tincture of iodine, boric acid, or antibiotic to the cut end
• Repeat treatment for 2–3 days

Why this matters: untreated navels develop navel ill (omphalophlebitis) — a bacterial infection causing septicaemia and joint swelling in calves. It is a leading cause of early calf mortality.

Step 3 — Dry the Calf

If the cow does not lick the calf dry, or if the weather is cold, wipe the calf clean and dry manually.

Why: newborn calves have very limited body fat reserves. A wet calf in cold weather rapidly develops hypothermia — a dangerous, potentially fatal drop in body temperature.

Early Calf Milestones

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Colostrum Feeding

Colostrum is the first milk secreted by the dam after calving. It is not ordinary milk — it is the calf’s only source of passive immunity.

Why timing is critical: The calf’s small intestine can absorb intact immunoglobulin (IgG/antibody) molecules only during a brief window after birth. This process — called passive transfer of immunity — depends on specialised intestinal cells that are present at birth and decline rapidly. IgG absorption drops sharply after 6 hours and is virtually absent by 24 hours. A calf that does not receive colostrum in this window has no immune protection.

Feeding Rates

• Feed colostrum within 1–2 hours of birth
• Continue colostrum for first 3–5 days at 2–2.5 litres/day
• Whole milk: max 1/10th body weight, maximum 5–6 litres/day; continue for 6–10 weeks
• Overfeeding causes Calf Scours (diarrhoea)

Composition and Functions of Colostrum

Colostrum prevents:

• Calf Scour (diarrhoea)
• Night Blindness
• Navel Ill

Meconium

Meconium = the first faecal matter of the newborn calf — dark, tarry stool consisting of intestinal epithelial cells, mucus, and amniotic fluid ingested during gestation. It must be expelled in the first day of life.

• Colostrum’s natural laxative effect normally expels meconium
• If meconium is not voided: give a mild enema — dissolve soap in 1 litre warm water and administer rectally

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Identification of Calves

Identification is required for breeding records, health records, production records, and lineage tracking. Without reliable identification, good herd management is impossible — especially on breeding farms.

Methods of Identification

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Body Weight Monitoring

Body weight is recorded along with body length, breadth, and height to calculate milk allowance and monitor growth. Regular monitoring ensures the calf grows at the expected rate and feeding is adjusted accordingly.

• Target for crossbred calves: 400 grams/day or 2.5–3 kg/week

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System of Calf Rearing

The central decision in calf management is when and how to separate the calf from the dam. Each approach has specific trade-offs.

Weaning System (Most Common Commercial System)

The calf is separated from the dam after the colostrum period (3–4 days). Feeding and management thereafter is entirely by the dairyman.

• Pail feeding used after weaning (open pail or nipple pail)
• Individual pen recommended for the first few weeks — prevents cross-sucking, disease transmission, and competition for feed

Housing by Age

Advantages of Weaning System

1. If the calf dies accidentally, cow milking continues undisturbed
2. Calves are fed economically — only as much as necessary
3. Protects calf from diseases like diarrhoea (controlled feeding prevents overfeeding)
4. Actual milk yield can be recorded accurately
5. Total milk yield increases — weaning is essential for maximum milk production
6. Most important advantage: milking without calf is more hygienic and sanitary

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Calf Feeding Schedule

Feeding follows a developmental progression. Each phase stimulates the next stage of rumen development. Early introduction of grain (calf starter) produces volatile fatty acids (VFAs) via microbial fermentation inside the rumen — these VFAs stimulate rumen papillae development, which is essential for efficient nutrient absorption throughout adult life.

Milk Feeding Phase

Solid Feed Introduction

Role of antibiotics in calf starter: Aureomycin and Terramycin fed to calves improve appetite, increase growth rate, and prevent calf scours.

Pail Feeding Technique

• Nipple pail: Slows intake and mimics natural suckling — reduces bloat and digestive upsets. Preferred for very young calves.
• Open pail: Rapid intake can cause digestive upsets. Teaching method — place fingers in calf’s mouth, after it nurses pull its head gently down into the pail.
• Temperature must be 98–102°F — mimics milk coming directly from the udder
• Never overfeed — the calf’s abomasum (true stomach) capacity is limited
• A 2-month-old calf drinks 4–6 litres milk/day
• Utensils must be kept clean — contaminated utensils directly cause calf scours

Supernumerary Teat Removal

• Normal number of teats: maximum 4
• Extra (supernumerary) teats interfere with milking machine attachment
• Remove at 1–2 months of age using sterilised scissors
• Must be done before teat development begins

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Disbudding and Dehorning

Why Act Early?

The horn bud is not attached to the skull until after approximately 10 days of age. Before attachment, it is a loose button of keratin-producing tissue sitting on the skin — it can be destroyed with minimal pain and bleeding. After it attaches to the skull and horn growth begins, removal becomes a painful surgical procedure involving bone and significant bleeding. Early intervention is therefore both kinder and safer.

Disbudding = destroying horn-producing cells before horn growth begins (within 3–10 days of birth).

Methods of Disbudding

Purposes of Dehorning

• Less space needed in sheds
• Prevents bruises and injuries between animals (significant economic losses)
• Safer for operators and farm workers
• Easier animal handling and movement
• Prevents horn cancer (squamous cell carcinoma — common in Indian breeds, especially bullocks)

Disadvantages of Dehorning

• Exhibition value of well-shaped horns is lost
• Some breeds use horns for breed identification (Kankrej: lyre-shaped horns; Murrah buffalo: tightly curled horns)
• Dehorned animals cannot self-defend

Dehorning (Older Animals)

Uses specially designed clippers or a dehorning saw. More invasive — requires proper restraint, local anaesthesia, and post-operative wound care.

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Deworming and Deticking

Why Young Calves Need Frequent Deworming

Young calves have immature immune systems and are highly susceptible to internal parasites, especially Ascaris (roundworms), lungworms, and coccidia. Heavy worm burdens cause poor growth, anaemia, diarrhoea, and can be fatal.

Deworming Schedule

Drug for Ascaris (roundworms): Piperazine salt — paralyses roundworms, causing them to release from the intestinal wall and be expelled in faeces.

Deticking

Ticks, lice, and mites attach to the body surface and cause:

• Irritation and blood loss
• Anaemia (from heavy infestation)
• Disease transmission: babesiosis and theileriosis (tick-borne diseases)

Regular deticking using acaricides (tick-killing chemicals): spraying or dipping. Grooming (daily brushing) also helps control ectoparasites.

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Castration of Bull Calves

Castration = removal or destruction of the testicles (unsexing of the male). Eliminates testosterone production → docile animal, no unwanted breeding.

Objectives:

• Prevent unwanted reproduction
• Increase faster growth and weight gains
• Produce desirable meat type (castrated males gain more efficiently)
• Make the animal docile and easier to handle for draught work

Best age: 8–10 weeks — less stress, quicker healing, and minimal bleeding compared to older animals.

Methods of Castration

Nose Ring

• Nasal septum punctured for nose ring at 12 months of age
• Provides safe and effective control of bulls
• Pressure on sensitive nasal tissues gives effective control even of large, aggressive bulls

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Calf Disease Management

Most calf deaths occur in the first month from the following diseases:

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Management Practices Timeline

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Summary Cheat Sheet

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References

• Banerjee, G.C. — A Textbook of Animal Husbandry (8th Ed.), Oxford & IBH Publishing Co.
• NDDB (National Dairy Development Board) — Calf Rearing Guidelines
• ICAR (Indian Council of Agricultural Research) — Livestock Management Standards
• NADCP (National Animal Disease Control Programme) — Government of India, Dept. of Animal Husbandry & Dairying