生产系统和饲料对本地Gochu Asturcelta猪生产性能、胴体性状和估计能量平衡的影响

IF 0.8 4区农林科学 Q3 AGRICULTURE, MULTIDISCIPLINARY

Spanish Journal of Agricultural Research Pub Date : 2022-06-09 DOI:10.5424/sjar/2022203-18194

B. De la Roza-Delgado, I. Feito, Francisco Fuente-Maqueda, S. Modroño, A. Argamentería, M. Ciordia

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引用次数: 3

摘要

研究目的:评价粗放型、ES型饲养系统的效果;半粗放(SES)和饲料(放牧林地、橡子、栗子、配合饲料)对土产Gochu asturcela猪生产性能、胴体性状和能量平衡的影响。研究区域:阿斯图里亚斯(西班牙)。材料与方法:连续2年7 - 12月，选取免疫去势的Gochu Asturcelta猪58头(母25头，公33头)，初始体重为93.39±3.36 kg，平均年龄为6.82±0.24月龄，随机分为ES区和SES区。ES猪以林地、橡子(Quercus robur L.)和栗子(Castanea sativa Mill.)为食，在此基础上添加1.5 kg配合饲料/头·d。SES动物仅饲喂2.5 kg配合饲料/头·d。分析了饲料的化学成分和代谢能、能量平衡、生长性能和猪胴体性状。主要结果:橡子和栗子的化学成分非常接近，除了多酚含量和轮廓外，ω -6/ ω -3比低于配合饲料。ES组猪的活重和胴体重分别比SES组低25%和30% (p<0.001)。ES组总代谢能需要量(MJ/天)低于SES组。研究重点:观察到的生产和胴体参数是ES环境中猪能量摄入低于SES环境的结果，因此在ES环境中饲养Gochu Asturcelta猪时，有必要大幅降低放养率，以增加体重并改善胴体性状。

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Influence of production system and feeds on performance, carcass traits and estimated energy balance of autochthonous Gochu Asturcelta pigs

Aim of study: To assess the effects of rearing system (extensive, ES; semi-extensive, SES) and feeds (grazed woodland, acorns, chestnuts, compound feed) on the performance, carcass traits and energetic balance of autochthonous Gochu Asturcelta pigs. Area of study: Asturias (Spain). Material and methods: In two successive years, a total of 58 immunocastrated Gochu Asturcelta pigs (25 females, 33 males), with an initial weight of 93.39 ± 3.36 kg and mean age of 6.82 ± 0.24 months, were randomly divided between ES and SES plots from July to December. ES pigs grazed woodland, acorns (Quercus robur L.) and chestnuts (Castanea sativa Mill.) and they were given additionally 1.5 kg compound-feed/pig·day. SES animals received only 2.5 kg compound-feed/pig·day. Chemical composition and metabolizable energy of feeds, energetic balance, growth performances and pig carcass traits were analysed. Main results: Acorns and chestnuts were both very close in their chemical composition, except for the polyphenol content and profile, and had a lower omega-6/omega-3 ratio than compound feeds. Live weight for the ES pigs was 25% lower and carcass weight 30% lower than for SES pigs (p<0.001). Total ME requirement (MJ/day) was lower in ES than in SES pigs. Research highlights: The productive and carcass parameters observed are a consequence of a lower energy intake for pigs in ES than in SES, it being necessary to drastically reduce the stocking rate to increase weight gain and to improve carcass traits when Gochu Asturcelta pigs are reared in ES.

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来源期刊

Spanish Journal of Agricultural Research 农林科学-农业综合

CiteScore

2.00

自引率

0.00%

发文量

审稿时长

6 months

期刊介绍： The Spanish Journal of Agricultural Research (SJAR) is a quarterly international journal that accepts research articles, reviews and short communications of content related to agriculture. Research articles and short communications must report original work not previously published in any language and not under consideration for publication elsewhere. The main aim of SJAR is to publish papers that report research findings on the following topics: agricultural economics; agricultural engineering; agricultural environment and ecology; animal breeding, genetics and reproduction; animal health and welfare; animal production; plant breeding, genetics and genetic resources; plant physiology; plant production (field and horticultural crops); plant protection; soil science; and water management.