- 期刊
- OpenAccess
飼料添加薑黃粉對第二期蛋雞產蛋性能、蛋品質及骨骼特性之影響
Effects of dietary turmeric powder supplement on performance, egg quality, and bone characteristics in second-cycle laying hens
摘要
產蛋後期蛋雞因體內鈣磷代謝失恆，常出現骨質疏鬆症，冀能利用薑黃粉（turmeric powder, TP）富含薑黃素（curcumin）之特性，改善鈣磷代謝和骨骼強度以便緩解此症並增加產蛋性能和蛋品質。選用120隻羅曼褐色蛋雞，逢機分配至3個處理組，分別餵飼添加0（對照組）、0.4與0.6%TP之飼料，每處理4重複欄，每欄10隻90週齡之蛋雞，飼於上置巢箱且鋪有粗糠之水泥地面上，以4週為1周期，連續測量4周期，試驗期共16週，試驗期間每周期測量產蛋性能與蛋品質，並於試驗結束收集血清與脛骨。結果顯示，飼料添加0.4%TP具有增加試驗結束時脛骨破裂強度卻又具有降低蛋殼強度與脛骨磷量之趨勢（P<0.10），但不影響血清鈣或磷之濃度。飼料添加TP不影響產蛋性能（P>0.05），而可較對照組提升試驗全期蛋黃羅氏比色扇（Roche yolk color fan）色度、a*（紅色）及b*值（黃色）之色澤，並可提升蛋黃類薑黃素濃度（P<0.01），以及具有減低蛋黃丙二醛（malondialdehyde, MDA）濃度之趨勢（P=0.08）。綜上所述，飼料添加0.4或0.6%TP不影響高齡蛋雞之產蛋性能、骨骼或蛋殼強度，但可增加蛋黃顏色深度與類薑黃素蓄積，而添加0.4%TP可能對骨骼和蛋殼強度具有相反之重分配趨勢，需要更進一步探討。
並列摘要
Osteoporosis is frequently observed in laying hens particularly during the second laying stage of egg production. The prevention and treatment measures may accompany changes in the laying performance and egg quality. Turmeric powder (TP), rich with curcumin, has been shown to reduce bone loss and enhance bone mineralization; however, the beneficial effect of TP on the egg industry remains to be learned. The purpose of this study was to investigate the effects of dietary supplementation of TP on bone characteristics, laying performance, and egg quality, in the second phase of laying hens. A total 120 of 90-week-old laying hens were randomly allocated into twelve pens with three dietary treatments: control diet, control diet supplemented with 0.4% TP, and with 0.6% TP. Ten hens were housed in 4 m^2 floor pens with set nests for 16 weeks. Egg production was recorded every day and 2 eggs per pen were randomly collected every 4 weeks for analysis of egg quality. Two birds per pen were randomly selected and sacrificed for tibia collection after blood sampling at the end of the trial. Results showed that dietary supplementation of 0.4% TP tended to improve the bone strength but reduce the egg shell strength and the tibia P content at the end of trail (P < 0.10). Serum Ca and P concentration remained unchanged. Supplementation of 0.4 and 0.6% TP affected litter on the laying performance, but all significantly enhanced the yolk Roche yolk color fan score, Hunter a*, and b* when comparing to the control (P < 0.05). The yolk curcuminoid concentration was increased (P < 0.01) and yolk malondialdehyde level (P = 0.08) was decreased by TP supplementation. It is concluded that, in the second-cycle laying hens, both 0.4 and 0.6% TP supplementation affected little on the bone characteristics, shell strength, and laying performance, but significantly increased the yolk redness, yellowness and curcuminoid content. As noted, supplementation of 0.4% TP might exert an opposite effect on bone and egg shell strength, indicating a repartition mechanism, but it requires furthers confirmation.