Orzuna-Orzuna José Felipe, Dorantes-Iturbide Griselda, Lara-Bueno Alejandro, Mendoza-Martínez Germán David, Miranda-Romero Luis Alberto, Hernández-García Pedro Abel
Departamento de Zootecnia, Universidad Autónoma Chapingo, Chapingo CP 56230, Mexico.
Departamento de Producción Agrícola y Animal, Unidad Xochimilco, Universidad Autónoma Metropolitana, Mexico City CP 04960, Mexico.
Animals (Basel). 2021 Mar 30;11(4):955. doi: 10.3390/ani11040955.
The objective of this study was to determine the effects of the supplementation of a polyherbal mixture (HM) on the productive performance, carcass characteristics, meat quality, and the profile of blood metabolites of lambs fed a high-concentrate diet. Thirty-six male Pelibuey lambs (25.21 ± 0.96 kg BW) were housed in individual pens during a 56-day feeding period and were randomly assigned to four treatments: (1) Control (CON): Basal diet without HM; (2) HM1: CON + 1 g of HM kg dry matter (DM); (3) HM2: CON + 2 g of HM kg DM; and (4) HM3: CON + 3 g of HM kg DM. Data were analyzed using the GLM (General Linear Model) procedure of statistical analysis system (SAS), and linear and quadratic effects were tested to evaluate the effects of the HM level. A quadratic increase was observed in the dry matter intake and in daily weight gain ( < 0.05) of lambs fed with HM2 and HM1, respectively. However, final body weight, body condition, carcass characteristics, and meat quality were similar among treatments ( > 0.05). It was observed a linear increase ( < 0.05) in the mean corpuscular hemoglobin concentration. Lymphocytes in blood from lambs supplemented with the HM1 diet increased and segmented neutrophils decreased compared to lambs receiving the CON treatment ( < 0.05). The concentration of uric acid in the blood had a linear increase ( < 0.05) and the serum creatinine level decreased ( < 0.05) as the HM dietary dose increased. In conclusion, dietary inclusion of 2 and 1 g of HM kg of DM improves feed consumption and daily weight gain, respectively, without affecting carcass characteristics, meat quality, and health status on finishing lambs.
本研究的目的是确定添加多草药混合物（HM）对采食高浓缩日粮的羔羊生产性能、胴体特性、肉质和血液代谢物谱的影响。36只雄性佩利布埃伊羔羊（体重25.21±0.96千克）在56天的饲喂期内单独圈养，并随机分为四个处理组：（1）对照组（CON）：不添加HM的基础日粮；（2）HM1组：CON + 1克HM/千克干物质（DM）；（3）HM2组：CON + 2克HM/千克DM；（4）HM3组：CON + 3克HM/千克DM。使用统计分析系统（SAS）的GLM（通用线性模型）程序对数据进行分析，并测试线性和二次效应以评估HM水平的影响。分别观察到，饲喂HM2和HM1的羔羊干物质摄入量和日增重呈二次增加（P<0.05）。然而，各处理组之间的最终体重、体况、胴体特性和肉质相似（P>0.05）。平均红细胞血红蛋白浓度呈线性增加（P<0.05）。与接受CON处理的羔羊相比，补充HM1日粮的羔羊血液中的淋巴细胞增加，分叶中性粒细胞减少（P<0.05）。随着HM日粮剂量的增加，血液中尿酸浓度呈线性增加（P<0.05），血清肌酐水平降低（P<0.05）。总之，日粮中添加2克和1克HM/千克DM分别提高了采食量和日增重，而不影响育肥羔羊的胴体特性、肉质和健康状况。
