Electron beam and roasting treatments of cottonseed meal: Implications for gossypol content, rumen degradability parameters and fattening performance in lambs

IF 1.8 3区工程技术 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Applied Radiation and Isotopes Pub Date : 2026-05-01 Epub Date: 2026-02-06 DOI:10.1016/j.apradiso.2026.112484

Farzad Ghanbari , Hormoz Mansouri , Nader Papi , Taghi Ghoorchi , Parvin Shawrang , Noormohammad TorbatiNejad , Davood Ebrahimi Meymand , Esmaeil Esmaeili Rad

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Abstract

This study evaluated the nutritional value of cottonseed meal (CSM) processed by roasting (125 °C for 30 min) and electron beam (EB) irradiation (75 kGy), using both in situ and in vivo approaches. Ruminal degradation kinetics were assessed via the nylon bag technique. A fattening trial was conducted using 18 male Shal lambs (32.44 ± 5.20 kg) in a completely randomized design (CRD). The lambs were assigned to three groups (n = 6), each receiving one of the experimental diets (treatments) containing untreated CSM (control), heat-treated (roasted) CSM (RCSM), or EB-irradiated CSM (ICSM). Both processing methods reduced the effective ruminal degradability of dry matter and crude protein at outflow rates of 0.02, 0.05, and 0.08 h⁻¹ (P < 0.05); however, EB irradiation was more effective. Blood parameters remained unaffected (P > 0.05). Notably, lambs fed ICSM exhibited higher feed intake (P = 0.02), daily weight gain (P = 0.03), total weight gain (P = 0.03), and final body weight (P = 0.04) compared with those receiving RCSM. Feed conversion ratio showed a favorable trend (P = 0.08). Additionally, hot and cold carcass weights (P = 0.02, P = 0.04) and eye muscle width (P = 0.01) were greater in the ICSM group. These results suggest that EB irradiation improves ruminal protein protection and enhances growth performance and carcass quality in fattening lambs.

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电子束和焙烧处理棉籽粕：对羔羊棉酚含量、瘤胃可降解性参数和育肥性能的影响

本研究采用原位和体内两种方法，对经125 °C烘焙30 min和75 kGy电子束辐照处理的棉籽粕（CSM）的营养价值进行了评价。采用尼龙袋技术评价瘤胃降解动力学。采用完全随机设计（CRD），选用18只雄性夏尔羊（32.44 ± 5.20 kg）进行育肥试验。羔羊被分为三组（n = 6），每组饲喂一种试验饲粮（处理），其中包括未处理的CSM（对照）、热处理（烤）CSM （RCSM）或eb辐照CSM （ICSM）。在流出速率为0.02、0.05和0.08 h−1时，两种处理方法均降低了干物质和粗蛋白质的瘤胃有效降解率（P <； 0.05）；而EB照射更有效。血液参数未受影响（P >； 0.05）。与RCSM组相比，ICSM组羔羊的采食量（P = 0.02）、日增重（P = 0.03）、总增重（P = 0.03）和末重（P = 0.04）显著增加。饲料系数呈良好趋势（P = 0.08）。此外，ICSM组热胴体重和冷胴体重（P = 0.02,P = 0.04）和眼肌宽度（P = 0.01）均大于ICSM组。综上所述，EB辐照可改善育肥羔羊瘤胃蛋白质保护，提高生长性能和胴体品质。

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来源期刊

Applied Radiation and Isotopes 工程技术-核科学技术

CiteScore

3.00

自引率

12.50%

发文量

406

审稿时长

13.5 months

期刊介绍： Applied Radiation and Isotopes provides a high quality medium for the publication of substantial, original and scientific and technological papers on the development and peaceful application of nuclear, radiation and radionuclide techniques in chemistry, physics, biochemistry, biology, medicine, security, engineering and in the earth, planetary and environmental sciences, all including dosimetry. Nuclear techniques are defined in the broadest sense and both experimental and theoretical papers are welcome. They include the development and use of α- and β-particles, X-rays and γ-rays, neutrons and other nuclear particles and radiations from all sources, including radionuclides, synchrotron sources, cyclotrons and reactors and from the natural environment. The journal aims to publish papers with significance to an international audience, containing substantial novelty and scientific impact. The Editors reserve the rights to reject, with or without external review, papers that do not meet these criteria. Papers dealing with radiation processing, i.e., where radiation is used to bring about a biological, chemical or physical change in a material, should be directed to our sister journal Radiation Physics and Chemistry.