Youngstock Welfare in Cattle: Weaning to First Calving
Weaning and Post-Weaning Welfare
Weaning is a major welfare stress for calves; post-weaning management critically determines subsequent growth and welfare. Key principles: ensure solid feed (starter concentrate, hay/straw) intake before weaning; wean by reducing milk over 7-14 days rather than abruptly; maintain social groups at weaning (weaning alone adds to social stress); provide hay at all times post-weaning to support rumen development; and ensure adequate water access. Post-weaning growth checks should be minimised.
Nutrition and Growth Rate Targets
Heifers must achieve adequate growth to calve at the target weight (typically 85-90% mature body weight) and age (22-24 months for most Holstein/Friesian heifers). Under-grown heifers at calving have higher dystocia risk, poorer metabolic transition, and lower lifetime production. Over-grown heifers have increased dystocia risk due to excessive foetal size. Regular body weight and body condition score monitoring every 2-3 months allows early detection of growth rate deviation and nutritional adjustment.
Housing and Social Welfare
Youngstock benefit from group housing that allows social interaction and play. Adequate lying space (particularly important during housed periods), comfortable bedding, and good ventilation are essential. Minimising regrouping (which causes social stress, reduced feed intake, and aggression) is important; stable group composition from weaning to service period improves welfare. Access to pasture during the summer is beneficial for young cattle welfare, growth, and future ease of management.
Health and Disease Management
Bovine respiratory disease (BRD) peaks at weaning, housing, and during mixing events. Vaccination protocols (intranasal at housing, injectable before weaning or at housing) reduce BRD incidence. Regular health checks (minimum weekly during high-risk periods) enable early detection and treatment. BVD virus (cattle mucosal disease/diarrhoea) is a major cause of immunosuppression; identifying and removing persistently infected (PI) animals from the herd eliminates the primary virus reservoir.
Reproductive Management
Heifers should reach puberty and be served at the correct weight and age. Oestrus detection (visual observation, pedometers, activity monitors) and accurate timing of AI or natural service is important for pregnancy rates. Pregnancy diagnosis at 5-7 weeks after service prevents delay in identifying non-pregnant heifers requiring re-service. Pre-calving management (move to calving facilities 3 weeks before expected calving, BCS optimisation) reduces dystocia and transition disease risk in first-calving heifers.