Ortíz-Domínguez Gabriel Andrés, González-Pech Pedro Geraldo, Torres-Acosta Juan Felipe de Jesús, Ventura-Cordero Javier, Villalba Juan, Sandoval-Castro Carlos Alfredo
Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Yucatán, Km 15.5 Carretera Mérida-Xmatkuil, Mérida C.P. 97315, Yucatán, Mexico.
Facultad de Ciencias Agropecuarias, Universidad Autónoma de Campeche, Calle 53 S/N, Col. Unidad, Esfuerzo y Trabajo #2, Escárcega C.P. 24350, Campeche, Mexico.
Animals (Basel). 2024 Feb 12;14(4):603. doi: 10.3390/ani14040603.
We evaluated the relationship between individual and herd GIN infection level, nutrition, production performance and anemia parameters in a tropical farm context. Fifty-four female goats were monitored to assess their body condition score (BCS, nutritional status indicator), live weight (LW) and LW gain (LWG, both used as production level indicators), FAMACHA© and hematocrit (HT, both used as anemia indicators). Goats browsed for 4 h in a tropical forest and received balanced feed and chopped grass. The eggs per gram of feces (EPG) indicated the GIN burden, with fecal samples obtained at 7:00 (AM) and 15:00 h (PM.) from each goat at six sampling points during the study. The variables and their relationship with GIN burdens were analyzed using Kruskall-Wallis, ANOVA and Friedman tests and Spearman correlations. The fecal samples obtained in the AM and PM can be equally representative of parasitic burdens (similar and highly correlated). However, the EPG of individual goats from periods of 30 days apart can be considered independent. The BCS and LWG varied between sampling times ( < 0.05), whereas EPG, LW and HT did not ( > 0.05). The GIN burden was negatively correlated with HT and BCS (-0.21, = 0.01 for each one). The individual pattern of infection demonstrates the true impact of GINs on their hosts. Additionally, feeding and nutritional status may present important variations influencing the performance of the goats more than the impact of GINs under the farm conditions of the present study. However, GIN infection contributed to the variation in goat health and productivity in this tropical farm.
我们在热带农场环境中评估了个体和群体胃肠道线虫（GIN）感染水平、营养、生产性能及贫血参数之间的关系。对54只母山羊进行监测，以评估其体况评分（BCS，营养状况指标）、活体重（LW）和体重增加量（LWG，均用作生产水平指标）、FAMACHA©评分和血细胞比容（HT，均用作贫血指标）。山羊在热带森林中采食4小时，并给予均衡饲料和切碎的草料。每克粪便中的虫卵数（EPG）表明GIN感染负荷，在研究期间的六个采样点，于上午7:00和下午15:00从每只山羊采集粪便样本。使用克鲁斯卡尔 - 沃利斯检验、方差分析、弗里德曼检验和斯皮尔曼相关性分析变量及其与GIN感染负荷的关系。上午和下午采集的粪便样本对寄生虫负荷具有同等代表性（相似且高度相关）。然而，间隔30天的个体山羊的EPG可视为独立数据。BCS和LWG在采样时间之间存在差异（<0.05），而EPG、LW和HT则无差异（>0.05）。GIN感染负荷与HT和BCS呈负相关（均为-0.21，P = 0.01）。个体感染模式表明了GIN对其宿主的真实影响。此外，在本研究的农场条件下，饲养和营养状况可能存在重要差异，对山羊生产性能的影响大于GIN感染。然而，GIN感染导致了该热带农场山羊健康和生产力的差异。
