WebJun 9, 2024 · The Dairy Calf and Heifer Association indicates that Holstein heifers should calve at 21-24 months and Jersey heifers should calve at 20-22 months for optimal economic return. Research shows that for Holsteins, first lactation milk yield is maximized when heifers calve between 22 and 25 months of age. WebFeb 15, 2024 · In this article, CAFRE’s Gavin Duffy discusses calving heifers at 24 months, the benefits, key targets and heifer rearing costs. To maintain dairy herd size, it is necessary to have a good supply of quality heifers to replace animals that have to be …

Calf Health Module Introduction Cornell University …

WebThe rationale behind this are: 1) heifers require longer to recover and resume cycling after calving; 2) this allows extra time for their calves to grow and be more in line with the calves from the cow herd (possibly making marketing easier); 3) higher selection pressure for fertility can be applied and 4) concentrating their calving time … Web2 days ago · Breed to Calve by 24 Months of Age Maximum lifetime productivity for a heifer is achieved when heifers calve by 24 months of age (Nunez-Dominguez et al., 1991). When heifers do not reach this goal, it is often attributed to failure of the heifer to achieve puberty by the first breeding season. give another name to adivasis

Reproductive Management for Bos indicus-Influenced Cows

WebOct 10, 2005 · The dairy farmer's goal should be to raise healthy, well-grown heifers that calve and enter the milking herd by 22 to 24 months of age. Producers should strive for an average calving age of 23 months. Research and field data indicate that lifetime production and profitability increase with calving slightly below 24 months of age. WebApr 1, 1992 · These data indicate that heifers exposed for 30-mo first calving are heavier, taller, have larger pelvic area, and have greater reproductive performance than those … give another name of adivasis