Hopkins D L, Hall D G, Channon H A, Holst P J
NSW Agriculture, PO Box 129, Cowra, New South Wales 2794, Australia.
Meat Sci. 2001 Nov;59(3):277-83. doi: 10.1016/s0309-1740(01)00080-8.
The meat quality of 8-9-month-old cryptorchid, wether and ewe lambs (Poll Dorset×Border Leicester×Merino) was assessed. These lambs were grazed over summer and autumn from weaning (November) on lucerne (Medicago sativa) or ryegrass/clover (Lolium rigidum/trifolium subterranean) pasture at two locations (A or B). After 72 days lambs grazed on lucerne were supplemented with either ad lib clover hay or clover silage. Those grazed on the ryegrass/clover pasture were supplemented from weaning with either oat grain (400-600 g/h day and clover hay ad lib) or oat grain (200-400 g/h day) plus sunflower seed meal (200 g/h day) and clover hay ad lib. Lambs were slaughtered in April and May after they reached 48 kg liveweight. Lambs supplemented solely with roughage produced muscle (m. longissimus thoracis et lumborum; LTL) with a higher (P<0.05) pH, but there was no effect of nutrition or sex on meat colour or tenderness. Slaughter day affected tenderness of the topside (m. semimembranosus). Assessment of aroma, flavour and acceptability was undertaken on the m. biceps femoris from wether and cryptorchid lambs using an experienced taste panel. There was no clear effect of sex or nutrition on the assessment of the sensory attributes. However, panellists considered meat from cryptorchid lambs fed the oats/sunflower supplement and grazed at location B, to have a stronger aroma and flavour (P<0.05) and in some cases to be less acceptable than meat from other combinations of sex, diet and location. The most acceptable meat came from lambs supplemented with oats, irrespective of sex or location. As such, these effects could not be attributed solely to either the diet or sex, but suggest there are conditions where meat from cryptorchids can be less acceptable.
对8至9月龄的隐睾公羔、去势公羔和母羔（波德代×边境莱斯特×美利奴）的肉质进行了评估。这些羔羊在夏季和秋季从断奶（11月）开始，在两个地点（A或B）的紫花苜蓿（紫花苜蓿）或黑麦草/三叶草（硬直黑麦草/地下三叶草）牧场上放牧。在紫花苜蓿上放牧72天后，给羔羊补饲任意量的三叶草干草或三叶草青贮料。在黑麦草/三叶草牧场上放牧的羔羊从断奶开始，补饲燕麦谷物（400 - 600克/小时·天）和任意量的三叶草干草，或燕麦谷物（200 - 400克/小时·天）加葵花籽粕（200克/小时·天）和任意量的三叶草干草。羔羊在4月和5月达到48千克活重后进行屠宰。仅补饲粗饲料的羔羊所产肌肉（胸腰最长肌；LTL）的pH值较高（P<0.05），但营养或性别对肉的颜色或嫩度没有影响。屠宰日影响股二头肌（半膜肌）的嫩度。使用经验丰富的味觉小组对去势公羔和隐睾公羔的股二头肌进行香气、风味和可接受性评估。性别或营养对感官特性评估没有明显影响。然而，小组成员认为，在B地点放牧并补饲燕麦/葵花籽的隐睾公羔的肉具有更浓郁的香气和风味（P<0.05），在某些情况下，其可接受性低于其他性别、日粮和地点组合的肉。最可接受的肉来自补饲燕麦的羔羊，与性别或地点无关。因此，这些影响不能仅仅归因于日粮或性别，而是表明在某些情况下，隐睾羊的肉可接受性较低。
