Lysine and threonine responses in Ross x Ross TP16 male broilers | Posted on:2010-08-08 | Degree:M.S | Type:Thesis | University:Mississippi State University | Candidate:Everett, Derrick Lashawn | Full Text:PDF | GTID:2443390002981271 | Subject:Agriculture | Abstract/Summary: | | The purpose of this study was to evaluate the Lys and Thr responses of TP-16 male broilers. Experiment 1 (14-28 d of age) showed no significant live performance effects. In Experiment 2, Lys and Thr (P=0.021) interacted to affect 28 to 42 d body weight gain and (P=0.004) feed intake. Lys main effects improved body weight gain (P=0.002), and feed conversion (P=0.009). Thr fed at the 0.68% level improved body weight gain and feed conversion. Mortality did not differ among treatments and averaged 0.09% across all treatments. The study indicated the sensitivity of the Thr:Lys ratio when broilers are fed diets containing marginal Lys. Although Thr X Lys interactions occurred in this study, the Lys levels in the test diets may have been too high for determining a ratio to an amino acid in a factorial study. Interaction results indicate that the Thr:Lys ratio in broilers from 28 to 42 days of age is between 0.57 to 0.68. | Keywords/Search Tags: | Lys, Thr, Broilers, Body weight gain | | Related items |
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