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首页> 外文期刊>Tropical Animal Health and Production >Estimating pasture intake and nutrient digestibility of growing pigs fed a concentrate-forage diet by n-alkane and acid-insoluble ash markers
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Estimating pasture intake and nutrient digestibility of growing pigs fed a concentrate-forage diet by n-alkane and acid-insoluble ash markers

机译：用正构烷烃和酸不溶性灰分标记物估算以精饲料为食的成年猪的草场摄入量和养分消化率

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摘要

A study was carried out to determine voluntary forage intake and nutrient digestibility in growing pigs fed a mixed forage and concentrate diet. Twenty-five 8-week-old Large White x Landrace crossbred male pigs (27 +/- 3.8 kg) were blocked by weight into five groups, and each was randomly allocated to four indoor treatments (A, B, C, and D), which received 100, 90, 80, and 70 % of ad lib concentrated intake and an outdoor treatment (E) that received 80 % of ad lib concentrate. Indoor treatments were either fed the concentrate only (A) or also received freshly cut Kikuyu grass (Pennissetum clandestinum) ad libitum (B, C, and D), while pigs on treatment E were reared outdoors in Kikuyu grass paddocks. There was a significant correlation between the amount of concentrate offered and its intake (P < 0.01). The intake of Kikuyu was similar among treatments (P > 0.05). Mean acid-insoluble ash digestibility estimates of organic and dry matter were superior to C-32 estimates (P < 0.05). Kikuyu intake was higher (P < 0.05) than the estimated intake by 0.076 +/- 0.03 kg. It was concluded that Kikuyu intake was not affected by the reduction of the concentrate allowance, and this should be taken into consideration when feeding pigs on pasture.
机译：进行了一项研究，以确定饲喂混合饲料和浓缩饲料的成年猪的自愿饲料摄入量和营养物质消化率。将25只8周大的大白x长白杂交种公猪（27 +/- 3.8千克）按体重分成5组，每组随机分配给4种室内处理（A，B，C和D） ，分别接受100％，90％，80％和70％的ad lib浓缩摄入量，而室外处理（E）则接受80％的ad lib浓缩摄入量。室内处理只喂饲浓缩物（A），也可以随意采食新鲜切开的菊菊草（Pennissetum clandestinum）（B，C和D），而采用E处理的猪则在菊菊草围场户外饲养。所提供的精矿量与其摄入量之间存在显着相关性（P <0.01）。不同治疗方法中菊苣的摄入量相似（P> 0.05）。有机物和干物质的平均酸不溶性灰分消化率估计值优于C-32估计值（P <0.05）。 Kikuyu摄入量比估计摄入量高（P <0.05）0.076 +/- 0.03 kg。结论是，菊苣汤的摄入量不受浓缩物配额减少的影响，在牧场上喂猪时应考虑到这一点。

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