Webillustrates breeding and calving weight targets for heifers of differing mature size based on desired age at first calving. Table 1. Target weights for dairy animals of differing mature … WebOct 15, 2024 · In the dairy industry, we’ve known that a cow gets close to maximum size from 48-54 months. In a 2015 study (see chart), Canadian researchers put the mature size of Holsteins at 1562 lbs. Using 55% of mature weight as a target for breeding, that would lead to a target of 859 lbs. at 13.6 months. The current popular literature has done a great ...
Monitoring Dairy Heifer Growth - Penn State Extension
WebCalving first-lactation cows at 22 to 24 months of age with an optimal body weight is most favorable for decreasing feed costs for heifer rearing and increasing productive life.2 … WebApr 16, 2024 · Frequent weighing of dairy heifers and comparison to target weights is critically important and should be a major component of every farm’s rearing plan. The major targets to benchmark your heifers’ performance is at 6 months (30% of mature bodyweight), 15 months (60% of mature bodyweight) and 22 months (90% of mature bodyweight). 11套
Heifer weights and weighing - DairyNZ
WebOct 25, 2024 · For example, if average cow weight is 1400 lbs and 60% of mature weight by breeding is the goal, heifers need to weigh 840 lbs at breeding. Taking target weight … WebTarget weight is assumed to be the weight of a heifer at various stages of her growth to achieve a weight at calving which will maximise her productivity and longevity. Research has shown that the desirable weight at first calving is 85% of mature liveweight. Therefore for a herd with an optimal mature weight of 600 kg, the ideal heifer is 510 ... WebJul 1, 2013 · In heifers with a live weight record between 18 and 21 months of age, every 1% increase in the percentage of target live weight attained was associated with an increase in milk volume of 23 ± 0.6 ... 11妹