Carvalho Camila Lopes, Andretta Ines, Galli Gabriela Miotto, Bastos Stefanello Thais, Camargo Nathalia de Oliveira Telesca, Mendes Ricardo Evandro, Pelisser Giovanna, Balamuralikrishnan Balasubramanian, Melchior Raquel, Kipper Marcos
Department of Animal Science, Faculdade de Agronomia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.
Department of Pathobiology, Pharmacology and Zoological Medicine, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium.
Front Vet Sci. 2023 Dec 5;10:1229485. doi: 10.3389/fvets.2023.1229485. eCollection 2023.
The objective of this study was to assess the impact of β-mannanase and probiotic on the performance, serum biochemistry, gut morphometric traits, and fresh egg quality of laying hens. A total of 120 cages, housing light-weight laying hens (36 weeks old), were randomly assigned to four different treatments. These treatments included a control group fed non-supplemented diets; diets supplemented with 300 g/ton of beta-mannanase; diets supplemented with 50 g/ton of probiotic; or diets containing both 300 g/ton of β-mannanase and 50 g/ton of probiotics. The trial spanned a duration of 26 weeks and was divided into three productive phases, each lasting 28 days. The inclusion of β-mannanase resulted in a significant improvement in the laying rate by 11% ( < 0.05) compared to the control treatment. Similarly, the addition of probiotics also enhanced the laying rate by 7% ( < 0.05), as well as the supplementation with combined additives (11.5%). Combined additives showed an increase in egg masses, and additive association improved by 13.9% ( < 0.001) in contrast to the control treatment. Overall, β-mannanase and combined additives used during the supplementation period resulted in improvements in the weight of fresh eggs. These benefits were observed after a period of 14 weeks without supplementation ( < 0.05). Furthermore, significant differences were observed in the serum biochemistry and egg masses of birds that were fed diets containing both additives (β-mannanase + probiotics) compared to the control group. Parameters such as uric acid, total cholesterol, and triglycerides displayed notable variations. The villi height: crypt depth showed differences with combined additives (β-mannanase + probiotics). The β-mannanase improved specific gravity, yolk height, length, and pH, and yolk color traits compared to the control treatment. The use of probiotics helped to improve yolk height, pH, and color score. Besides, combined additives (β-mannanase + probiotics) improve yolk height, length, weight, pH, and better traits in yolk color. Hence, incorporating β-mannanase and probiotics into laying hen diets proves to be a highly effective strategy for enhancing laying rate and overall health status, while simultaneously elevating certain quality attributes of fresh eggs.
本研究的目的是评估β-甘露聚糖酶和益生菌对蛋鸡生产性能、血清生化指标、肠道形态特征及鲜蛋品质的影响。总共120个笼子，饲养体重较轻的蛋鸡（36周龄），随机分为四种不同处理。这些处理包括：对照组饲喂未添加任何物质的日粮；添加300克/吨β-甘露聚糖酶的日粮；添加50克/吨益生菌的日粮；或同时含有300克/吨β-甘露聚糖酶和50克/吨益生菌的日粮。试验为期26周，分为三个生产阶段，每个阶段持续28天。与对照处理相比，添加β-甘露聚糖酶使产蛋率显著提高了11%（P<0.05）。同样，添加益生菌也使产蛋率提高了7%（P<0.05），同时添加复合添加剂（提高了11.5%）也有此效果。与对照处理相比，复合添加剂使蛋重增加，添加剂组合效果提高了13.9%（P<0.001）。总体而言，在添加期使用β-甘露聚糖酶和复合添加剂可使鲜蛋重量增加。在不添加任何物质的14周后观察到了这些益处（P<0.05）。此外，与对照组相比，饲喂同时含有两种添加剂（β-甘露聚糖酶+益生菌）日粮的鸡的血清生化指标和蛋重存在显著差异。尿酸、总胆固醇和甘油三酯等参数表现出明显变化。绒毛高度与隐窝深度在添加复合添加剂（β-甘露聚糖酶+益生菌）时存在差异。与对照处理相比，β-甘露聚糖酶改善了蛋的比重、蛋黄高度、长度和pH值以及蛋黄颜色特征。使用益生菌有助于提高蛋黄高度、pH值和颜色评分。此外，复合添加剂（β-甘露聚糖酶+益生菌）改善了蛋黄高度、长度、重量、pH值以及蛋黄颜色的更好特征。因此，在蛋鸡日粮中添加β-甘露聚糖酶和益生菌被证明是提高产蛋率和整体健康状况的高效策略，同时还能提高鲜蛋的某些品质特性。
Zotero 插件