Endocrine responses and body composition changes during feed restriction and realimentation in young bulls2
| Autor: | C S Krishnan, T.C. Jenkins, J. R. Ward, Donald M. Henricks, L Grimes |
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| Rok vydání: | 1994 |
| Předmět: | |
| Zdroj: | Journal of Animal Science. 72:2289-2297 |
| ISSN: | 1525-3163 0021-8812 |
| Popis: | Changes in serum metabolic hormones, carcass composition, and body weight gains were examined in 21 Angus bulls (9 mo old) subjected to feed restriction and realimentation. They were allotted to three feeding regimens: 1) control (CON); 2) restricted (REST); and 3) realimented (REAL). The CON group was fed 3.2% of their body weight; the REST group was fed 1.5%. The REAL group was fed the restricted diet (1.5% BW) for 84 d then fed the control diet (3.2% BW) until slaughter. The CON and REAL groups were slaughtered at approximately 400 kg and the REST group at 346 kg. For the experiment, average daily gains (kg/d) were different (P .05) as the CON group. Serum GH was higher in the REST than in the CON group (P < .05). In the REAL group, serum GH values rose to a level similar to that of the REST group; realimentation lowered serum GH (P < .05).(ABSTRACT TRUNCATED AT 250 WORDS) |
| Databáze: | OpenAIRE |
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