By the end of 2011, the USDA reported the overall national culling rate
Generally, the culling rate
and reasons for culling were not significantly influenced by the cow's breed (p>0.
The incidence rate for morbidity, mortality, case fatality and culling rate
for chickens of each production system was calculated.
And with the estimated culling rate
of 80,000 camels a year, the government would not be able to match the alarming birth rate.
Fowler's scepticism is understandable in view of slaughter figures indicating the sow culling rate
during the second quarter remained faster than a year earlier.
In English dairy farms the average annual culling rate
is about 22 to 25% (Esslemont and Kossaibati, 1997; Whitaker et al.
In this study, WEI was not affected by treatments and the culling rate
was highest in the 3,100 kcal/kg ME treatments.
keep the culling rate
up to maintain an efficient herd.
This minimizes the labor requirement of the buyer, decreases the culling rate
, and eliminates the delay between animal purchase and milk flow to the tank.
Prices were still very attractive,``It is unlikely that such a high culling rate
will be maintained in 2003,'' she said.
For each time point (parity), we used the Cochran-Armitage test to examine the association of sow cumulative culling rate
with body weight at d 109 of gestation of parity 1.
Even under good management conditions, herds that fill with purchased heifers normally experience a 20-30 percent culling rate
the first year, sometimes higher.