Dias-Silva Tairon Pannunzio, Abdalla Filho Adibe Luiz, Katiki Luciana Morita, Amarante Alessandro Francisco Talamini do, Abdalla Adibe Luiz, Louvandini Helder
Universidade Federal do Piauí, Bom Jesus, PI, Brasil.
Laboratório de Nutrição Animal, Centro de Energia Nuclear na Agricultura, Universidade de São Paulo, Piracicaba, SP, Brasil.
Rev Bras Parasitol Vet. 2020;29(2):e002220. doi: 10.1590/s1984-29612020026. Epub 2020 May 18.
This study aimed to evaluate the effects of Trichostrongylus colubriformis infection on the hemato-biochemical parameters, feed digestibility, and nitrogen balance in Santa Inês lambs. Eighteen three-month-old Santa Ines castrated male lambs (16.9 ± 1.43 kg of body weight) were randomly distributed in two experimental treatments: infected with T. colubriformis (I, n = 9) and uninfected (U, n = 9). The I group received a total of 45,000 L3 larvae of T. colubriformis (5,000 infective larvae, three times per week, for three weeks). During the experimental period, blood, feed digestibility, and nitrogen balance were evaluated. The I lambs showed a reduction in erythrocytes, hemoglobin, hematocrit, mean corpuscular volume, and total proteins, as well as an increase in platelets and eosinophils compared to those in the U group (p < 0.05). With the exception of total protein content, these values were within the normal range for the species. Furthermore, lower dry matter and organic matter digestibility were observed in the I lambs (p = 0.08). The present findings highlight that T. colubriformis infection has the potential to impair some hemato-biochemical parameters as well as feed digestibility in lambs, which could affect their productivity.
本研究旨在评估蛇形毛圆线虫感染对圣伊内斯羔羊血液生化参数、饲料消化率和氮平衡的影响。18只3月龄的圣伊内斯去势公羔（体重16.9±1.43千克）被随机分为两种实验处理组：感染蛇形毛圆线虫组（I组，n = 9）和未感染组（U组，n = 9）。I组共接种45,000条蛇形毛圆线虫L3期幼虫（5,000条感染性幼虫，每周3次，共3周）。在实验期间，对血液、饲料消化率和氮平衡进行了评估。与U组相比，I组羔羊的红细胞、血红蛋白、血细胞比容、平均红细胞体积和总蛋白含量降低，血小板和嗜酸性粒细胞增加（p < 0.05）。除总蛋白含量外，这些值均在该物种的正常范围内。此外，I组羔羊的干物质和有机物消化率较低（p = 0.08）。目前的研究结果表明，蛇形毛圆线虫感染有可能损害羔羊的一些血液生化参数以及饲料消化率，进而影响其生产性能。
