Mineral status, bone characterisitics, carcass characteristics, and performance of feedlot lambs implanted with zeranol /
. Lambs had ad libitum access to a high concentrate diet
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| Format: | Thesis eBook |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
1998.
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| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | . Lambs had ad libitum access to a high concentrate diet .67) and 78.9 vs 80.7% (P =- .85), respectively. This (2.56 g/d vs 3.19 g/d) on d 28. The percentage difference (P <.05) in I lambs compared to NI lambs. However, there 61.4% (P=.32) 45.4 vs 55.8% (P=.04)1 50.5 vs 53.5/'o (P = accumulate for 2 d. Excreta was collected and analyzed for P ADG and 16.8% improvement (P=.02) in feed efficiency compared allotted to pens of 3 to 4 in an open sided barn and assigned and larger livers (P < 10). Bone breaking load was increased and N content. Lambs were slaughtered on d 67 and carcass appears to follow the pay-Out, curve of the zeranol implant. bone characteristics and increased hide thickness and liver bone characteristics. Lambs were blocked by sire, randomly characteristics were determined. Phosphorus excretion characteristics" containing 38% TDN and 16% CP or 67 d. Lambs were fed for 21 d prior lo implanting. At 14 d intervals post implanting, excretion, animal performance, carcass characteristics, and expressed as a percentage of P intake for I vs NI treatment feedlot lambs. Zeranol treatment also altered metacarpal Fifty-four Rambouillet (avg wt, 34.6 kg) wether lambs were groups at 4, 28, 42, and 56 d post implanting was 55.7 vs however, implanted lambs did have thicker hides (P < . 0 1) metacarpal bones. Results of this study indicate that pens were thoroughly cleaned and excreta allowed to resulted in an increase (P<. 05) in P retention for 1 lambs There was no effect (P> . 1O) of zeranol oil N excretion in this study. Implanted lambs had a 26.3% greater (P =.0009) to either an implant (1) or non-implant (NI) treatment group used to determine the effects of zeranol of p and N weights. were no other differences in physical characteristics of the with NI lambs. implanting treatment did not affect carcass zeranol improved P utilization, feed efficiency, and ADG in |
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| Item Description: | "Major subject: Nutrition". Vita. |
| Physical Description: | x, 54 leaves : illustrations ; 28 cm. Also available online. Issued also on microfiche from Lange Micrographics. |
| Bibliography: | Includes bibliographical references: pages 45-53. |