Institute of Animal Nutrition, Sichuan Agricultural University, Ya'an, Sichuan, People's Republic of China.
Poult Sci. 2011 Jul;90(7):1516-22. doi: 10.3382/ps.2010-01126.
To investigate the effect of canthaxanthin supplied via a maternal route on the production of both breeder hens and chickens, 270 Chinese Three-Yellow breeder hens were randomly divided into 2 groups consisting of 135 birds each (5 replicates of 27) for study. The breeder hens were fed either a basal diet or the basal diet supplemented with 6 mg of canthaxanthin/kg for 24 wk. At the end of the 24-wk breeder experiment, all hatching eggs laid in 5 consecutive days of each group were collected and incubated. For each breeder group, 100 newly hatched chicks (5 replicates of 20) were reared under environmentally controlled conditions for 21 d. Canthaxanthin supplementation resulted in the following outcomes: an enhancement of the serum total antioxidant capacity (TAC) of breeder hens (P = 0.029), a significant increase in the yolk colorimetric score of Roche Yolk Color Fan (RYCF; P < 0.001), and a significant improvement of the antioxidant status of the egg yolk (P < 0.05). The chicks that hatched from eggs laid by breeder hens fed the canthaxanthin supplementation diet demonstrated a higher pigmentation colorimetric score of RYCF for their shank skin (P < 0.05), and the antioxidant capacity of the newly hatched chicks was significantly increased (P < 0.05). Both of these positive effects on shank skin pigmentation colorimetric score of RYCF and antioxidant capacity were observed for at least 7 d posthatching, and the chicks that hatched from canthaxanthin-enriched eggs showed a lower mortality (0 vs. 4%) during the first 21 d posthatching. These findings support the hypothesis that canthaxanthin supplementation of the maternal diet enhances the protective capacity of tissues against oxidative stress in vivo, which might be beneficial for poultry producers.
为了研究经母体途径补充角黄素对种鸡和肉鸡生产的影响，将 270 只中国三黄种鸡随机分为两组，每组 135 只（5 个重复，每个重复 27 只）进行研究。种鸡分别饲喂基础日粮或基础日粮添加 6mg/kg 角黄素，试验期 24 周。在 24 周种鸡试验结束时，收集每组连续 5 天所产的所有种蛋并进行孵化。对于每个种鸡组，在环境控制条件下饲养 100 只刚孵化的小鸡（每个重复 20 只）21 天。角黄素补充导致以下结果：种母鸡血清总抗氧化能力（TAC）增强（P=0.029），罗氏蛋黄颜色扇（RYCF）的蛋黄颜色比色评分显著增加（P<0.001），蛋黄抗氧化状态显著改善（P<0.05）。饲喂添加角黄素日粮的种母鸡所产鸡蛋孵化的小鸡胫皮肤的 RYCF 比色评分更高（P<0.05），并且新孵化小鸡的抗氧化能力显著增强（P<0.05）。胫皮肤 RYCF 比色评分和抗氧化能力的这些积极影响至少在孵化后 7 天内持续存在，并且孵化自角黄素富集鸡蛋的小鸡在孵化后 21 天内的死亡率较低（0 对 4%）。这些发现支持了这样的假设，即母体日粮中补充角黄素增强了组织在体内对抗氧化应激的保护能力，这可能对家禽生产者有益。
