Kannan Alagarsamy, Sastry Vadali Rama Bhadra, Agrawal Dinesh Kumar, Kumar Avneesh
Animal Nutrition Division, Indian Veterinary Research Institute, Izatnagar, UttarPradesh 243122, India.
Trop Anim Health Prod. 2013 Aug;45(6):1289-95. doi: 10.1007/s11250-013-0359-6. Epub 2013 Jan 24.
To study the effect of feeding calcium hydroxide-treated or vitamin E-supplemented cottonseed meal (CSM) incorporated diets on plasma gossypol, blood parameters and animal performance, 24 male Bikaneri lambs of 6-7 months of age and of uniform body weight were divided into four groups of six animals each in a completely randomized design and respectively fed isonitrogenous and isocaloric concentrate mixtures containing 20% soybean meal (CON) or 40% raw CSM (RCSM), 40% raw CSM supplemented with 500 IU of vitamin E per head per day (ERCSM), and 40%, 1.5% calcium hydroxide-treated CSM (CaCSM) along with ad libitum wheat straw throughout 510 days of experimental feeding. The lambs on all the diets grew linearly throughout the experimental period. The total weight gain, in turn the average daily gain (ADG), was not affected by dietary variations. The daily intake of dry matter, crude protein (CP), digestible crude protein (DCP) and total digestible nutrients (TDN) were found comparable among lambs of all the groups. Though total gossypol intake was similar in RCSM, ECSM and CaCSM groups, however, free gossypol intake was significantly higher (P < 0.01) in RCSM, ECSM groups as compared to CaCSM group. Serum iron and blood hemoglobin levels were significantly (P < 0.05) lower in RCSM group as compared to CaCSM and CON groups, and ALT activity was significantly (P < 0.05) higher on RCSM group as compared to other groups. Plasma gossypol and osmotic fragility of erythrocytes were significantly (P < 0.05) increased in RCSM group as compared to CaCSM and ERCSM groups. However, there was no significant difference in the concentration of other blood/serum biochemical constituents among the lambs on different groups. Based on the results, it may be concluded that feeding of 40% CSM in the concentrate mixture of the diet in Bikaneri lambs did not have any major adverse effect in blood parameters and animal performance. Either calcium hydroxide treatment or vitamin E supplementation did not produce any major additional benefits.
为研究饲喂添加氢氧化钙处理或维生素E的棉籽粕（CSM）日粮对血浆棉酚、血液参数和动物生产性能的影响，将24只6 - 7月龄、体重均匀的雄性比卡内里羔羊按完全随机设计分为四组，每组6只，分别饲喂含20%豆粕（CON）或40%生棉籽粕（RCSM）、40%生棉籽粕且每头每天添加500 IU维生素E（ERCSM）、40%经1.5%氢氧化钙处理的棉籽粕（CaCSM）的等氮等热量浓缩混合料，并在整个510天的试验期内自由采食小麦秸秆。所有日粮组的羔羊在整个试验期内均呈线性生长。总增重以及平均日增重（ADG）不受日粮差异的影响。所有组羔羊的干物质、粗蛋白（CP）、可消化粗蛋白（DCP）和总可消化养分（TDN）的日摄入量相当。虽然RCSM组、ECSM组和CaCSM组的总棉酚摄入量相似，但RCSM组和ECSM组的游离棉酚摄入量显著高于CaCSM组（P < 0.01）。与CaCSM组和CON组相比，RCSM组的血清铁和血红蛋白水平显著降低（P < 0.05），且RCSM组的谷丙转氨酶（ALT）活性显著高于其他组（P < 0.05）。与CaCSM组和ERCSM组相比，RCSM组的血浆棉酚和红细胞渗透脆性显著增加（P < 0.05）。然而，不同组羔羊的其他血液/血清生化成分浓度没有显著差异。根据结果可以得出结论，在比卡内里羔羊日粮的浓缩混合料中饲喂40%的CSM对血液参数和动物生产性能没有任何重大不利影响。氢氧化钙处理或维生素E添加均未产生任何重大额外益处。
