Department of Animal Science, Federal Rural University of Pernambuco, Dom Manuel de Medeiros Street, s/n, Dois Irmãos, Recife, PE, 52171-900, Brazil.
Department of Animal Morphology and Physiology, Federal Rural University of Pernambuco, Dom Manuel de Medeiros Street, s/n, Dois Irmãos, Recife, PE, 52171-900, Brazil.
Trop Anim Health Prod. 2021 Apr 22;53(2):281. doi: 10.1007/s11250-021-02731-1.
The objective of this study was to evaluate the effect of three varieties of cactus cladodes resistant to carmine cochineal on the animal performance and histology of the large intestine of sheep. Forty lambs (21.0 ± 2.0 kg body weight) were distributed in a completely randomized design, with four treatments and ten repetitions. The experimental treatments consisted of a control diet and three more diets in which part (750 g/kg) of the elephant grass hay, and all the corn were replaced by Miúda cactus cladodes, IPA-Sertânia cactus cladodes, or Orelha de Elefante Mexicana (O.E.M.) cactus cladodes. On the 60th day after the introduction of the tested diets, blood samples were collected to quantify serum magnesium (Mg) levels. After 63 days of experiment, the animals were slaughtered and fragments of the cecum and colon were collected for histopathological analysis. The inclusion of the Miúda and O.E.M. cactus cladodes in the diet caused inflammatory lesions in the cecum (100% of the animals) and in the colon (71.43% of the animals) of the sheep. The inflammation in the cecum caused by Miúda and O.E.M. cactus cladodes was considered accentuated (P = 0.009). Less voluntary water intake was observed for animals submitted to diets with cactus cladodes (P < 0.001), as well as higher water content in the feces (P < 0.001). The cactus cladodes, especially the Miúda and O.E.M. varieties, cause lesions in the tissue morphology of the cecum and colon of sheep, but improve productive performance.
本研究旨在评估三种抗胭脂虫红的仙人掌属茎对绵羊动物性能和大肠组织学的影响。将 40 只羔羊（21.0±2.0kg 体重）随机分为完全设计，设四个处理组，每组 10 个重复。实验处理包括对照日粮和三种日粮，即用米乌达仙人掌属茎、IPA-Sertânia 仙人掌属茎或墨西哥象耳仙人掌属茎替代 750g/kg 象草干草和全部玉米。在引入试验日粮后的第 60 天，采集血样以测定血清镁（Mg）水平。实验 63 天后，屠宰动物并采集盲肠和结肠片段进行组织病理学分析。在日粮中添加米乌达和墨西哥象耳仙人掌属茎导致绵羊盲肠（100%的动物）和结肠（71.43%的动物）出现炎症病变。米乌达和墨西哥象耳仙人掌属茎引起的盲肠炎症被认为较为严重（P=0.009）。摄入仙人掌属茎日粮的动物饮水量减少（P<0.001），粪便含水量增加（P<0.001）。仙人掌属茎，尤其是米乌达和墨西哥象耳仙人掌属茎，会导致绵羊盲肠和结肠组织形态出现病变，但能提高生产性能。
