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De la subfamilia Lepturinae (Cerambycidae) se revisaron 57 ejemplares, colectados sobre flores de Bucida macrostachya Standl. (Combretaceae) conocida en la región como cacho de toro, Hechtia schotii Baker ex Hemsley (Bromeliaceae), Jatropha curcas L. (Euphorbiaceae) piñón y Forsteronia spicata (Jacq.) G. Mey (Apocinaceae) bejucos leñosos, en cuatro municipios del estado de Chiapas. Se determinaron las especies: Choriolaus howdeni Giesbert and Wapes, 1999, Cyphonotida rostrata Sapes (Bates, 1872), Strangalia biannulata (Lynsley, 1935), Strangalia bicolorella Chemsak, 1969, Strangalia brachialis (Bates, 1885) Strangalia doyeni Chemsak & Linsley, 1976, Strangalia melampus (Bates, 1885), Strangalia palaspina Chemsak, 1969, y Strangalia pectoralis (Bates, 1885), las cuales se encuentran depositadas en la colección entomológica de la Facultad de Ciencias Agronómicas Campus V, Villaflores (CACH). De acuerdo con la literatura consultada la especie Cyphonotida rostrata pectorales (Bates) no está registrada para Chiapas por lo que estos datos representan los primeros registros.

The objective of this study was to assess the effects of a probiotic strain Clostridium butyricumMIYAIRI 588 (CBM588) on broiler and weaned piglet health and zootechnical performance. Five field studies were carried out in broilers and five in weaned piglets under European feed additive guidelines. Each study followed a randomized blocked design with two treatments: Control (basal diet) and CBM588 supplemented groups. The zootechnical performance parameters selected were body weight, daily gain, feed intake and feed efficiency (feed:gain). Broilers fed diets with CBM588 gained significantly more weight (+2%, p < .001) and exhibited significantly better feed efficiency (-1.6%, p < .001) in comparison with Controls. Similarly, analysis of pooled data of weaned piglet trials showed that CBM588-fed piglets were significantly heavier than Controls (+2.6%, p = .014), exhibited significantly higher mean daily gain (+4.7%; p = .004), and significantly improved feed efficiency (-4.2%, p = .001). In addition to the zootechnical efficacy studies, the preventive effect of CBM588 on necrotic enteritis (NE) was assessed in a natural challenge model in broilers where CBM588 reduced the incidence and severity of NE lesions. These data indicate the potential of CBM588 to improve broiler and weaned piglet zootechnical performance, and to make a positive contribution to animal health.

Male growing pigs were fed a diet containing 250 g/kg of native corn starch (CS; 26% amylose, 74% amylopectin) or 250 g/kg of raw potato starch (RPS), as examples of digestible starch and resistant starch (Type II), respectively. Whole-tract digestibilities of organic matter, crude protein and starch were greater in pigs fed CS than in those fed RPS through at least d 23 of the study. However, the values progressively increased in the RPS-fed pigs up to d 38, at which time the groups did not differ in organic matter and starch digestibility. The digestive tract and colonic digesta were heavier and colon length longer in pigs fed the RPS diet. Digestibility of starch in the ileum on d 38 was significantly lower in RPS-fed pigs, but rose from ileum to rectum; most starch was extensively fermented in the cecum and proximal colon. Purine base (PB) and short-chain fatty acid (SCFA) concentrations in feces initially increased and then decreased beginning on d 4 for PB and on d 21 for SCFA. PB concentration in feces was greater in pigs fed RPS than in those fed CS. In the large bowel digesta, PB and SCFA concentrations increased from the ileum to the cecum and proximal colon and then fell in the distal colon. Pigs fed the RPS diet had a higher PB concentration in the middle colonic digesta and a greater SCFA concentration in the proximal colonic digesta than the CS-fed group. Adaptation of growing pigs to supplementary RPS required 5 wk, as reflected by whole-tract digestibility and PB and SCFA fecal excretion data.