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首页> 外文期刊>Tropical Animal Health and Production >Interaction of space allowance and diet on growth performance and physiological responses of piglets raised in tropical conditions
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Interaction of space allowance and diet on growth performance and physiological responses of piglets raised in tropical conditions

机译：空间津贴和饮食对热带条件下饲养仔猪生长性能和生理反应的相互作用

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摘要

Intensification of pig production in developing countries has resulted in increased number of animals per unit area leading to welfare and growth performance issues. This study was then performed to evaluate the effects of space allowance and dietary energy and amino acid content on growth performance and physiological parameters of piglets reared under tropical conditions. A total of 1280 piglets (castrated males and females) with initial body weight of 5.9 +/- 0.4 kg were used. Animals were distributed in a 2 x 2 factorial arrangement composed by two space allowances (0.30 and 0.22 m(2)/animal) and two diets during 43 to 63 days of age (control and experimental diet with increased ME and AA content). The experimental period lasted 42 days subdivided into four phases according to the growth stage of the animals: pre-initial I (21 to 27 days of age), pre-initial II (28 to 34 days), initial I (35 to 42 days), and initial II (43 to 63 days). During pre-initial I and II, and initial I phases, pigs housed at a space allowance of 0.30 and 22 m(2)/animal had similar (P > 0.05) feed intake, weight gain, and feed conversion. During initial phase II, space allowance did not affect (P > 0.05) feed intake nor weight gain of the animals. Whereas, pigs fed the experimental diet had greater weight gain when compared to the control group (530 vs. 515 g/day,P = 0.03). According to our results, reducing space allowance from 0.30 to 22 m(2)/animal during the nursery phase (21 to 63 days of age) had negligible effects on piglet feed intake and weight gain, whereas feeding piglets with diets containing higher energy and amino levels resulted in greater weight gain.
机译：在发展中国家的猪产量的强化导致每单位面积增加的动物数量导致福利和增长性能问题。然后进行该研究以评估空间余量和膳食能量和氨基酸含量对热带条件下仔猪生长性能和生理参数的影响。使用初始体重为5.9 +/- 0.4千克的总共1280颗仔猪（阉割的男性和雌性）。动物分布在2×2的因子排列中，由两个空间余量（0.30和0.222米（2）/动物）和两年龄饮食（43至63天）（对照和实验饮食，增加ME和AA含量）。实验期持续42天细分为42天，根据动物的生长阶段分为四个阶段：预先初始I（21至27天），初始II（28至34天），最初i（35至42天） ），初始II（43至63天）。在初始I和II的初始I和II期间，初始I阶段，容纳在0.30和22μm（2）/动物的空间余量处的猪具有相似（p> 0.05）进料摄入，重量增益和进料转化。在初始阶段II期间，空间余量不影响（P> 0.05）进料摄入也不是动物的重量增益。然而，与对照组相比，喂养实验饮食的猪在重量增加（530 vs.515克/天，p = 0.03）。根据我们的结果，在幼儿园（21至63天）期间减少0.30至22米（2）/动物的空间津贴对仔猪进料摄入和体重增加的影响可忽略不计，而饲喂含有更高能量的饮食仔猪氨基水平导致更大的体重增加。

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