Renco Lean-Meater® SERIES 12
“Ultrasound for Ultra Profits”® (假一罚十)
The Lean-Meater Series 12 is a microprocessor controlled A-Mode ultrasonic instrument. It is designed to measure the total thickness of the skin and up to three layers of back fat. When the measurement is complete, the instrument will display the number of fat layers detected and the total thickness in millimeters with a greater accuracy than ever before. 

The Series 12 has a number of new features. Two of the most significant are the automatic detection of the number of layers present and the display of the result.

The primary use is the measurement of back fat in swine for the determination of sow condition, gilt selection, quality and other genetic aspects. Other uses include fat measurement in cattle, sheep and other land animals, as well as blubber measurement in aquatic animals. (The Lean-Meater is not intended for measurement of muscle tissue.)

The Lean-Meater can be thought of as an electronic ruler. Ultrasonic pulses sent into the animal are reflected back to the instrument from tissues of interest. The times until these echoes are received are translated into distances in mm. Measurements are non-invasive—no piercing of the skin with the consequent danger of infection. The animals are neither hurt nor irritated.

The use of LED’s (Light Emitting Diodes) assures sharp, crisp, readings. Only the Lean-Meater uses an LED display which will operate over a wider range of temperature and be more visible under adverse light conditions.

The instrument features rugged all-metal construction and a Nickel Metal Hydride—“green”—rechargeable battery, which does not need to be recycled. Battery charging and low power indicators are also provided.

The instrument is fast. Measurements are made quickly and easily as follows:

Simply wet the test site (usually by the last rib) with a coupling fluid, such as cooking oil, press the button to turn the instrument on and apply to the test site. Move it around to remove air bubbles. The display locks in when the total depth and number of layers has been determined. Note the reading on the display, which from left to right, shows the number of fat layers detected and the digital reading of total thickness of skin and fat layers. The figures below illustrate various displays.
产品参数：
产品规格：新型背膘厚度测定仪，快速，准确。
仪器部件：主机，探头，探头线，充电器，吻合剂，测试棒；
外壳：全金属外壳；
反应时间：10秒左右；
范围/精度：4-45 mm；
显示：2位LED的厚度，3个LED的显示1，2或3层被测量；
电池：可充电；
控制：开/关按钮；
电路：全固态电路电脑环境的保护电路板；
电源：金属氢化物镍电池；
电池组寿命：大约2-4年（1000充电/放电；）
工作电源：全工作状态6-10小时；
充电时间：12-14小时；
电池充电器：115-230伏；
大小： 18 × 7 × 2.5厘米；
重量：340克；
运输重量：总包：1050克。
产品特点：

1. 该仪器用来量度背脊脂及厚度，易于携带。
2. 金属所制成,手持型工作仪器.电源使用充电式电池，方便操作。
3. Renco瘦肉测量器是唯一获美国专利权的背脊脂肪数字测定器。
4. 运高(Renco)瘦肉测量器使用超声波(高频超声波)量度脊肪，动物既不会受伤或不舒服，也不会因使用刺破皮层的方法而有受到细菌传染的危险。

5. 读数是用毫米直接显示，故此无须解释，而又可获得高度的准确性。

各阶段母猪的背膘厚要求及能量需求:

各阶段	后备猪配种时背膘厚	母猪断奶时背膘厚	妊娠期61日龄的背膘厚	妊娠期85日龄的背膘厚	妊娠期110日龄的背膘厚
B点两层背膘	14-16mm	14-16mm	16-18mm	16-18mm	18-20mm
评分	3分	3分	3.5分	3.5分	4.0分
0阶段	0-21天	21-60天	61-84天	86-110天	哺乳
初产饲喂量:kg/天	1.8-2.0	1.4-2.6	2.8-3.2	2.8-3.2
经产饲喂量:kg/天	2.0-2.2	1.4-2.8	3.0-3.5	3.0-3.5

背膘不理想的解决方案：
1、后备母猪150日龄时，测背膘，12-14mm。低于10mm，增加饲料能量。
2、体重不足100公斤，B点背膘低于下限（12 mm），则增加营养浓度。
3、B点背膘接近上限或高于上线（14mm）应该减少营养浓度。
4、经产母猪（断奶如果B点背膘低于16mm或者B点背膘高于23mm的）按母猪饲养七阶段精细化饲养。