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The purpose of this study was to assess the effects of the methionine-to-lysine ratio (MLR) in a low-protein (17%) starter on the growth, blood, digestive traits, and carcass traits of goat kids. Forty-five goat kids were assigned to one of three different starter groups (MLR): A (0.29), B (0.31), or C (0.33). During the six-week trial, growth and blood parameters were evaluated every 2 weeks, and digestive traits were evaluated from 0 to 14 days during the treatment. At the end of the treatment period, five goat kids from each group were slaughtered to measure their carcass traits. Results showed no significant growth differences among the groups. Blood parameters were in a normal range and without significant differences. There were no significant differences in digestive traits among the three groups. For carcass traits, group C had significantly higher carcass and heart weights (P < 0.05). In conclusion, adjusting the MLR from 0.29–0.33 in 17% crude protein starter had no negative effect on goat kids. This approach may not only decrease feed costs and reduce nitrogen emission to achieve environmental benefits, but also increase feeding efficiency. [ABSTRACT FROM AUTHOR]

Chick (CE) or duck embryo eggs are known for nutritional supplement foods in traditional East countries for physical fitness enhancement and postpartum conditioning for many years. In this study, we evaluated the effects of different parts of the 10-day CE (embryo: CEr, yolk: CEw, and chorioallantoic membrane: CEp) on the antifatigue and antiaging activities in a D-galactose- (D-gal) induced aging mice model. The results showed CEp obviously increased the muscle weight and the liver and muscle glycogen content and enhanced exercise performance. In the antiaging assay, CEp significantly increased the activity of superoxide dismutase (SOD) and Glutathione Peroxidase (GPx). Moreover, the immunohistochemistry results of NRF-2 and HO-1 were also detected in the livers of mice in the D-gal/CEp group. The only partially potential such as CEr might improve OFT function with TG level, and CEw had strange grip strength. Therefore, we suggest that CEp has a potent antifatigue ability and could minimize the occurrence of age-associated disorders, more than other parts of the 10 days chicken embryo egg. [ABSTRACT FROM AUTHOR]