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首页> 外文期刊>The Bovine Practitioner >Effect of Different Castration Methods on Growth Performance and Behavior Responses of Postpubertal Beef Bulls
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Effect of Different Castration Methods on Growth Performance and Behavior Responses of Postpubertal Beef Bulls

机译：不同去势方法对青春期后公牛生长性能和行为反应的影响

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Fifty mixed-breed, 790 Ib (359 kg) preconditioned bulls were utilized to examine the effect of different castration methods on animal performance and behavior response. Cattle were blocked by weight and randomly assigned to one of five treatments: non-castrated control (CNT); castrated using high-tension rubber bands (BND); castrated using high-tension rubber bands with lidocaine local anesthesia (BNDL); castrated surgically (SURG); and castrated surgically with lidocaine local anesthesia (SURGL). Cattle were fed individually for 28 days post-castration. Castrated cattle tended to have lower dry matter intake (DMI) than CNT cattle throughout the study (P=0.12). BND/BNDL cattle had higher DMI than SURG/SURGL cattle during the first week post-castration (P=0.04), however, SURG/SURGL cattle had higher DMI than BND/BNDL cattle during the last week of the study (P=0.05). Castrated cattle had lower average daily gain (ADG; P<0.01) and gain efficiency (GE; P<0.01) than CNT cattle. SURG/SURGL cattle had more favorable ADG (P<0.01) and GE (P<0.01) than BND/BNDL cattle during the study. There were minimal to no behavioral differences observed post-castration between treatment groups. Use of local lidocaine anesthesia had no effect on performance, post-castration behavior or vocalization during castration, regardless of castration method utilized. A positive correlation was found between scrotal circumference and vocalization (P=0.05); however, the correlation between body weight and vocalization was not significant.
机译：使用五十种790 Ib（359 kg）的混养公牛来检验不同的去势方法对动物生长和行为反应的影响。牛被体重限制并随机分配到五种处理之一：非cast割对照（CNT）;使用高压橡皮筋（BND）割;使用带有利多卡因局部麻醉（BNDL）的高压橡皮筋割;手术去势（SURG）;并使用利多卡因局部麻醉（SURGL）进行手术cast割。 cast割后将牛单独喂养28天。在整个研究中，割牛的干物质摄入量（DMI）往往比CNT牛低（P = 0.12）。在-割后的第一周，BND / BNDL牛的DMI高于SURG / SURGL牛（P = 0.04），但是在研究的最后一周，SURG / SURGL牛的DMI高于BND / BNDL牛（P = 0.05） ）。割牛的平均日增重（ADG; P <0.01）和增效效率（GE; P <0.01）比CNT牛低。在研究期间，SURG / SURGL牛的ADG（P <0.01）和GE（P <0.01）比BND / BNDL牛更有利。 groups割后各治疗组之间的行为差​​异极小至无。不管使用哪种cast割方法，局部利多卡因麻醉的使用对performance割过程中的演奏，-割后的行为或发声均无影响。阴囊周长与发声之间呈正相关（P = 0.05）;然而，体重和发声之间的相关性并不显着。

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