| dc.contributor.author | Anderson, Giovana Maranho | |
| dc.description.abstract | 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). | en_US |
| dc.publisher | North Dakota State University | en_US |
| dc.rights | NDSU policy 190.6.2 | |
| dc.title | Does Consumption of Beef from Cattle Administered Growth-Enhancing Technology Trigger Early Estrus in Pre-Pubertal Gilts? | en_US |
| dc.type | Master's paper | en_US |
| dc.date.accessioned | 2012-06-01T13:38:49Z | |
| dc.date.available | 2012-06-01T13:38:49Z | |
| dc.date.issued | 2012 | |
| dc.identifier.uri | http://hdl.handle.net/10365/21552 | |
| dc.subject.lcsh | Beef cattle -- Nutrition. | en_US |
| dc.subject.lcsh | Hormones in animal nutrition. | en_US |
| dc.subject.lcsh | Feed additives. | en_US |
| dc.subject.lcsh | Estrus. | en_US |
| dc.rights.uri | https://www.ndsu.edu/fileadmin/policy/190.pdf | |
| ndsu.degree | Master of Science (MS) | en_US |
| ndsu.college | Agriculture, Food Systems and Natural Resources | en_US |
| ndsu.department | Great Plains Institute of Food Safety | en_US |
| ndsu.program | Food Safety | en_US |
| ndsu.advisor | Berg, Eric P. | |
