inventories are also good numbers for gauging the impact of drought years on cattle numbers.
A third type of farm in the model also had 100 Holsteins with average frame size and 80 replacement heifers
. But in this system, the cows were able to graze for up to 7 months every year.
What is the target weight, expressed as a percentage of mature weight, to breed Hereford and Angus replacement heifers
? What percent of body weight should they reach by calving?
The objective of this study was to evaluate herbage mass, allowance, and nutritive value of Florigraze and Arbrook pastures under continuous stocking management and to compare animal performance of Holstein replacement heifers
grazing the two cultivars in North Florida.
Nutrition of replacement heifers
affects mammary development and their ability to produce milk.
Effects of dietary physically effective neutral detergent fiber content on the feeding behavior, digestibility, and growth of 8- to 10-month-old Holstein replacement heifers
. J Dairy Sci 2017;1161-9.
* a slower pace of herd reduction, with record-high dairy cow culling offset by an ample supply of dairy replacement heifers
The farm has around 300 replacement heifers
, plus 11,500 breeding ewes and 3,000 acres of combinable cropping.
Feed represents about 50 to 55 percent of total costs of developing replacement heifers
This could be an important adjunct to current UC recommendations, which suggest using age and weight in selecting replacement heifers
. With a sensitivity ranging from 76.9% to 83.3%, 17% to 23% of heifers that are truly pubertal will be called prepubertal and be at risk of being culled.
Consequently, the number of beef cow replacement heifers
calving and entering the herd is expected to be down this year.
Conference topics covered include information on melding EPDs and cattle conformation to selecting replacement heifers
, marketing cattle, etc.