Date of Award
2012
Publisher
North Dakota State University
Document Type
Master's Paper
Degree Awarded
Master of Science (MS)
Program
Food Safety
Department
Great Plains Institute of Food Safety
College
Agriculture, Food Systems and Natural Resources
Faculty Advisor
Berg, Eric P.
Description
The objective was to determine if pre-pubertal gilts supplemented ground beef obtained from steers implanted with growth enhancing technology caused precocious puberty. Twenty-four gilts were selected for the same birth date from common parentage. Upon reaching 61 days of age, daily delivery of the low-estrogenicity base diet was supplemented with: 114 g beef natural patty (NAT), 114 g beef patty from steers that had received growth promoting implants (100 mg trenbolone acetate and 14 mg estradiol benzoate; IMP), 198 g tofu patty (TOFU), or the negative control (base diet only; CON). The estradiol equivalents (ng/kg) of the TOFU were approximately 500 fold times the NAT and 350 fold the IMP supplement. No differences (P = 0.55) were observed in number of days to reach estrus, feed efficiency (P > 0.19), live weight gain (P = 0.89), loin muscle development (P = 0.45), or subcutaneous fat deposition (P = 0.71).
Recommended Citation
Anderson, Giovana Maranho, "Does Consumption of Beef from Cattle Administered Growth-Enhancing Technology Trigger Early Estrus in Pre-Pubertal Gilts?" (2012). Food Safety. 17.
https://digitalcommons.ndsu.edu/food-safety/17
Rights
NDSU policy 190.6.2
Rights Link
https://www.ndsu.edu/fileadmin/policy/190.pdf
Handle Identifier
https://hdl.handle.net/10365/21552