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​鸭的养分有什麼特点
来源:http://www.zuixianya888.com 时间:2018-12-10 16:25:37
鸭的养分有什麼特点
What are the nutrient characteristics of ducks?
1.能量养分特点鸭能顺应日粮中较宽的能量浓度变化范围,如北京鸭的ME顺应范围爲10.03~13.38MJ/kg,番鸭爲10.87~12.75MJ/kg日粮。鸭的采食质变化范围也较大。与雏鸡相比,雏鸭对高能量精料能很好地调理代谢能摄人量,而能量耗费比鸡大,但对蛋白质的需求量不如雏鸡严厉。鸭与鸡相比,能将更多的代谢能堆积爲体脂肪。鸭对纤维的消化能高于鸡。鸭对豆饼粉、大麦和苜蓿粉的代谢能值比鸡辨别高6.7%、3.1%和6.6%。印度学者发现,生临时(1~8周龄)康贝尔鸭,饲料转化率随日粮蛋白质和能量程度(CP爲17%、20%、23%;ME爲、10.88MJ/kg、11.72MJ/kg和12.55MJ/kg进步而分明改善,但能量程度爲11.72MJ/kg和12.55MJ/kg之间差别不明显,日粮蛋白质的应用率随日粮蛋白质程度进步而下降,而能量应用率却随日粮能量添加而进步。实验还发现,在4周龄以前的雏鸭,当日粮蛋白质含量爲23%时,生长速度高;而4—8周龄雏鸭,在日粮蛋白质含量爲20%时生长好;日粮代谢能含量以11.72MJ/kg时,从1日龄到56日龄的实验期,增重大。据报道,在目前的日粮配方中,日粮的能量程度不影响雏番鸭的生长,但随日粮能量程度降低,饲料应用效率也进步,体内脂肪堆积也添加。研讨标明,坚持日粮蛋白质在相反程度时,鸭饲料应用率随日粮中脂肪添加程度的添加而直线进步。雏鸭日粮中添加占干物质2%~3%的脂肪,雏鸭增重进步10%~15%,每千克增重饲料耗费下降8%~12%。

1. Energy nutrient characteristics of ducks can adapt to a wide range of energy concentration in the diet, such as Beijing duck's ME compliance range of 10.03-13.38 MJ/kg, Muscovy duck's 10.87-12.75 MJ/kg diet. The range of feeding quality of ducks is also large. Compared with chickens, ducklings can regulate metabolizable energy intake well with high energy concentrate, and the energy consumption is higher than chickens, but the demand for protein is less severe than chickens. Ducks accumulate more metabolic energy into body fat than chickens. The digestive energy of ducks is higher than that of chickens. The metabolic energy of ducks to soybean cake powder, barley and alfalfa powder was 6.7%, 3.1% and 6.6% higher than that of chickens. Indian scholars found that dietary protein and energy levels (CP 17%, 20%, 23%) significantly improved feed conversion of temporary (1-8 weeks old) Campbell ducks, while ME, 10.88 MJ/kg, 11.72 MJ/kg and 12.55 MJ/kg improved significantly, but energy levels were 11.72 MJ/kg and 12.55 MJ/kg, there was no significant difference between dietary protein levels. The application rate decreased with the improvement of dietary protein level, while the energy utilization rate increased with the increase of dietary energy. It was also found that the growth rate of ducklings before 4 weeks of age was the highest when the dietary protein content was 23%, while that of ducklings aged 4-8 weeks was the best when the dietary protein content was 20%, and that of ducklings aged from 1 day to 56 days, when the Dietary Metabolizable Energy content was 11.72 MJ/kg, the weight gain was the largest. It is reported that the energy level of diet does not affect the growth of Muscovy ducklings in the current dietary formulation, but with the decrease of energy level of diet, the efficiency of feed application is also improved, and fat accumulation in the body is also added. The results showed that the application rate of duck feed increased linearly with the increase of fat content in the diet when dietary protein was insisted on in the opposite degree. The weight gain of ducklings increased by 10%-15% and the feed consumption per kg of weight gain decreased by 8%-12% by adding 2%-3% of dry matter to the diet of ducklings.

醉仙鸭

2.蛋白质养分特点用两种养分程度日粮饲喂北京雏鸭的实验发现,饲喂低蛋白日粮(CP爲16%,ME/CP=19.2)时,雏鸭14日龄的体重比高蛋白质日粮(CP爲28%,ME/CP=11)低30%,但48日龄体重两组之间无分明差别。但在消费条件下满足雏鸭晚期蛋白质需求对到达大晚期体重非常重要。研讨标明,雏番鸭从出生开端就能顺应粗蛋白质程度较高的日粮,且随日龄添加粗蛋白质的需求量降低。对3周龄雏鸭,当每千克日粮粗蛋白质爲190g,代谢能爲12.55MJ时生长快;到4—6或8周龄时日粮粗蛋白质含量以不超越150g/kg爲宜。关于雏鸭,含硫氨基酸是限制性氨基酸。对生长鸭,D—蛋氨酸的应用效率不如L—蛋氨酸高。在代谢能含量爲12.55MJ/kg、粗蛋白质爲139g/kg的日粮中添加蛋氨酸0.0、1.0、2.0g/kg,6周龄和6~11周龄体重随日粮蛋氨酸程度降低(0.0~1.0之间)而添加;6~11周龄增重、饲料耗费率、11周龄腹脂量都随蛋氨酸添加量的添加而改善。赖氨酸是鸭的第二限制性氨基酸,补充分解赖氨酸能增加蛋白质的供给量。
2. The experiment of feeding Beijing ducklings with two nutrient level diets showed that the body weight of 14-day-old ducklings was 30% lower than that of high-protein diets (CP 28%, ME/CP 11) when fed with low-protein diets (CP 16%, ME/CP=19.2), but there was no distinct difference between the two groups at 48-day-old. However, it is very important to meet the late protein requirement of ducklings under consumption conditions for reaching the maximum late body weight. Studies have shown that Muscovy ducklings can adapt to diets with higher crude protein levels from birth, and the demand for crude protein increases with age. For 3-week-old ducklings, when the crude protein per kg diet was 190 g and the metabolic energy was 12.55 MJ, the growth rate was the fastest; when the crude protein content was 4-6 or 8 weeks old, the optimal dietary crude protein content was not more than 150 g/kg. As for ducklings, sulfur-containing amino acids are the first limiting amino acids. For growing ducks, the application efficiency of D-methionine is lower than that of L-methionine. Methionine 0.0, 1.0 and 2.0 g/kg were added to diets with 12.55 MJ/kg of metabolizable energy and 139 g/kg of crude protein. The body weight of 6-week-old and 6-11-week-old was increased with the decrease of dietary methionine level (between 0.0 and 1.0). The weight gain, feed consumption rate and abdominal fat of 6-11-week-old were improved with the addition of methionine. Lysine is the second limiting amino acid in ducks. Supplementary lysine decomposition can increase protein supply.
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