Singh Yazavinder, Dalle Zotte Antonella, Palumbo Bianca, Cullere Marco
Department of Animal Medicine, Production and Health-MAPS, University of Padova, Viale dell'Università 16, 35020 Legnaro, PD, Italy.
Animals (Basel). 2025 Jul 23;15(15):2173. doi: 10.3390/ani15152173.
(CS) is an emerging sustainable oilseed crop with interesting feed application potentialities. The research assessed the potentiality of (CS) in the diet for free-range laying hens, aiming at reaching a nutritional claim. To this purpose, two feeding groups of hens ( = 100 Livorno hens, = 25 hens/pen) were farmed outdoor and received either a Control diet, which was a commercial diet for laying hens, or a CS diet. The latter was formulated to include the 5% CS cake and 1% CS oil, replacing conventional feedstuffs. Diets were isoprotein and isoenergy and were available throughout the laying period (February-September). At day 1, = 12 eggs/diet were sampled to assess the initial proximate composition and FA profile. Every 7 days the sampling was repeated to analyze the eggs' FA profile, up to day 35. At the end of the laying season, = 6 hens/dietary treatment were slaughtered and subjected to meat quality evaluations. Results highlighted that a 28-day feeding was the period required to obtain 227 mg of C18:3 -3 and 81 mg of C20:5 -3 + C22:6 -3/100 g egg, whereas a further 7 days of feeding trial were ineffective in further enhancing the omega-3 FA content of eggs. CS eggs were comparable to Control ones for overall physical traits, proximate composition, and shelf-life. In addition, at the end of the laying period, the meat of CS hens was also found to be healthier than that of Control ones, thanks to a higher omega-3 FA proportion ( < 0.01), which was, however, not sufficient to reach any nutritional claim. Instead, the proximate composition of CS meat was overall comparable to Control hens. In conclusion, the present research demonstrated that feeding meal and oil to laying hens is feasible and allows to reach the nutritional claim in eggs "rich in omega-3 FA" after a feeding period of 28 days, without any negative effects on other eggs' quality trials. can thus be defined as a promising sustainable feedstuff for the poultry sector for diversification purposes and to enhance the nutritional quality of eggs.
羽扇豆是一种新兴的可持续油料作物，具有有趣的饲料应用潜力。该研究评估了羽扇豆在自由放养蛋鸡日粮中的潜力，旨在实现一项营养声明。为此，将两组蛋鸡（每组100只利沃诺蛋鸡，每栏25只）在户外养殖，分别给予对照日粮（一种蛋鸡商业日粮）或羽扇豆日粮。后者的配方包含5%的羽扇豆饼粕和1%的羽扇豆油，替代了传统饲料原料。日粮为等蛋白和等能量，在整个产蛋期（2月至9月）均可获取。在第1天，每种日粮采集12枚鸡蛋以评估初始的近似成分和脂肪酸谱。每7天重复采样以分析鸡蛋的脂肪酸谱，直至第35天。在产蛋季节结束时，每种日粮处理组宰杀6只母鸡并进行肉质评估。结果表明，28天的饲喂期是获得每100克鸡蛋227毫克C18:3n-3以及81毫克C20:5n-3 + C22:6n-3所需要的时间，而进一步7天的饲喂试验对于进一步提高鸡蛋的ω-3脂肪酸含量并无效果。羽扇豆鸡蛋在总体物理特性、近似成分和保质期方面与对照鸡蛋相当。此外，在产蛋期结束时，还发现羽扇豆蛋鸡肉比对照蛋鸡肉更健康，这得益于更高的ω-3脂肪酸比例（P < 0.01），然而，这一比例仍不足以达到任何营养声明。相反，羽扇豆蛋鸡肉的近似成分总体上与对照蛋鸡相当。总之，本研究表明，给蛋鸡饲喂羽扇豆粕和羽扇豆油是可行的，并且在28天的饲喂期后能够在鸡蛋中实现“富含ω-3脂肪酸”的营养声明，而对其他鸡蛋品质指标没有任何负面影响。因此，羽扇豆可被定义为一种有前景的可持续饲料原料，用于家禽业的多样化发展以及提高鸡蛋的营养品质。
