Photoperiod and melatonin effects on growth and endocrine response in white-tailed deer (Odocoileus virginianus) /
(r--.832). Photoperiod through melatonin regulated fat
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| Format: | Thesis eBook |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
1995.
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| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | (r--.832). Photoperiod through melatonin regulated fat 11 mo) were utilized to establish the role of endogenous 159. Daily protein gain averaged 13 g/d in non-melatonin fed 83, and 180. IGF-I concentrations in controls began at 66.5 83, then decreased to 84.7 pg/ml at day 159, as daylength Captive white-tailed deer (Odocoileus virginianus) fawns (4- concentrations averaged 26.1 28.6, and 23.7 gg/dl at day -4, decreasing (196 ng/ml, d 83) and then increasing in parallel deuterium oxide (D20) dilution system was developed with I I development patterns in these growing fawns. fawns but declined from 21 to 3.4 g/d over the length of the fawns for estimation of body composition in deer. Empty body fawns maintained (P < .05) elevated melatonin (average 92 fed high, medium, or low intake. Body composition was in short days to 3.19 kg, and then declined to 2.07 kg at day increased to 12.4 hr. Body fat, initially 2.33 kg, increased increased to 67.09 pg/ml (d 180) in parallel with daylength Lean body mass and its'components, fat, and gut fill, were measured at four points, melatonin at six time points, and melatonin (5 mg/d at 2 h before sunset) or no melatonin, and Melatonin levels increased, as daylength declined from 10.9 melatonin, was the driving force in the growth and ng/rnl, d 12) fed fawns, and generally mirrored daylength, of protein deposition in deer fawns. Photoperiod, through pg/ml higher) until day 159. Melatonin concentrations were pg/ml, (d -4) decreased to 36.4 pg/ml (d 83), and then predicted with R2s of .989,.988,.985,.961,.656, respectively. similar for male and female fawns. Plasma concentrations of storage and retrieval, and melatonin treatment reduced rates T3 were similar for control and melatonin (average 312 T3, T4, and IGF- I at ten time points during the experiment. to 10.3 h/d, from 74.3 pg/ml at day 12 to 120.7 pg/rnl at day trial (P = .0001) in deer receiving melatonin. Melatonin fed versus exogenous melatonin on patterns of growth. A weight, water, lean body mass, protein, and fat were well predicted with the developed systems. Fawns were fed with daylength (203.3 ng/dI, d 180). Plasma T4 |
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| Item Description: | "Major subject: Nutrition". Vita. |
| Physical Description: | x, 94 leaves : illustrations ; 28 cm. Also available online. Issued also on microfiche from Lange Micrographics. |
| Bibliography: | Includes bibliographical references. |