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不同饲养方式下家兔的生长性能和肉质

Growth performance and meat quality of rabbits under different feeding regimes.

作者信息

Khan Kamran, Khan Sarzamin, Khan Rajwali, Sultan Asad, Khan Nazir Ahmad, Ahmad Naseer

机构信息

Department of Animal Sciences, Shaheed Benazir Bhutto University Sheringal, Sheringal, Khyber Pakhtunkhwa, Pakistan.

Faculty of Animal Husbandry and Veterinary Sciences, The University of Agriculture Peshawar, Peshawar, 25130, Khyber Pakhtunkhwa, Pakistan.

出版信息

Trop Anim Health Prod. 2016 Dec;48(8):1661-1666. doi: 10.1007/s11250-016-1140-4. Epub 2016 Sep 12.

Abstract

This study evaluated the growth, carcass characteristics and meat quality of indigenous rabbits in northern Pakistan. Weaned rabbits (age 35 days, weight 323 g) of four distinct phenotypes (white, black and white, brown and black) were fed four experimental diets: alfalfa hay (AH), berseem fodder (BF), BF supplemented with low-level concentrate (50 %; LLC) and high-level concentrate (75 %; HLC). Each experimental diet was fed to 48 rabbits, 12 of each phenotype, in a randomized complete block design. The duration of the experiment was 55 days, including 1 week of adaptation. Rabbits fed the BF and AH diets had poor body weight gain (P < 0.05) compared to rabbits fed the LLC and HLC diets. Feed conversion efficiency was best in the LLC (4.47) and HLC (4.58) groups. Average carcass yield (743 g) and carcass dressing percentage (56.2) were higher (P < 0.05) in LLC. Growth rate was not improved significantly by feeding HLC. Fat deposition in animals was higher (P < 0.05) in the groups supplemented with concentrate. Cost per kilogram of rabbit meat was lowest (P < 0.05) for BF, followed by AH, LLC and HLC. Brown phenotypes had the best (P < 0.05) feed conversion efficiency, body weight gain, carcass yield and carcass dressing. It was concluded that local rabbits do not necessarily need high levels of concentrates but can be well fattened with low-level concentrates along with forages.

摘要

本研究评估了巴基斯坦北部本土兔的生长性能、胴体特性和肉质。选取了四种不同表型(白色、黑白相间、棕色和黑色)的断奶兔(35日龄,体重323克),分别饲喂四种试验日粮:苜蓿干草(AH)、埃及三叶草饲料(BF)、添加低水平浓缩料(50%;LLC)的BF和添加高水平浓缩料(75%;HLC)的BF。采用随机完全区组设计,每种试验日粮饲喂48只兔,每种表型各12只。试验持续55天,包括1周的适应期。与饲喂LLC和HLC日粮的兔子相比,饲喂BF和AH日粮的兔子体重增加较差(P < 0.05)。LLC组(4.47)和HLC组(4.58)的饲料转化率最佳。LLC组的平均胴体重(743克)和胴体屠宰率(56.2)较高(P < 0.05)。饲喂HLC并未显著提高生长速度。添加浓缩料组动物的脂肪沉积较高(P < 0.05)。BF组每千克兔肉成本最低(P < 0.05),其次是AH组、LLC组和HLC组。棕色表型的饲料转化率、体重增加、胴体产量和胴体屠宰率最佳(P < 0.05)。研究得出结论,本地兔不一定需要高水平的浓缩料,但低水平浓缩料与草料搭配可以使其育肥良好。

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