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鸭的养分有什麼特点
来源:http://www.zuixianya888.com 时间:2018-12-3 15:16:42
鸭的养分有什麼特点
What are the nutrient characteristics of ducks?
产蛋鸭的养分特点产蛋鸭顺应性强,抗应激才能强,产蛋量高,容易豢养。产蛋鸭生长和消费进程可分爲三个阶段:育雏期(0~28日龄)、育成期(28日龄到产蛋开端)和产蛋期(从产蛋开端到产蛋完毕)。
Nutrient characteristics of laying ducks laying ducks laying ducks are strong compliance, strong ability to resist stress, high egg production and easy to raise. The growth and consumption process of laying ducks can be divided into three stages: brooding period (0-28 days), growing period (28 days to the beginning of laying) and laying period (from the beginning of laying to the end of laying).
1.育雏期雏鸭生长快,对养分要求高。消化零碎发育不健全,消化酶分泌量少且活性低,胃容积小,肌胃研磨饲料才能差,采食量低,消化才能弱。因而,应饲喂营养含量高、易消化、粗纤维含量低的日粮。生长发育所必需的氨基酸要充足战争衡,尤其是含硫氨基酸应特别留意供应。粗蛋白质爲15.5%、代谢能爲12.26MJ,/kg、钙爲1.0%的日粮,可满足育雏蛋鸭肌肉和骨骼零碎生长发育的需求。

1. The ducklings grow fast and require high nutrients. The digestive fragments are not well developed, the secretion of digestive enzymes is low and the activity is low, the volume of stomach is small, the grinding feed of musculogastric stomach is poor, the intake is low, and the digestive ability is weak. Therefore, diets with high nutrient content, digestibility and low crude fiber content should be fed. Amino acids necessary for growth and development should be adequately supplied, especially sulfur-containing amino acids. The diets with crude protein 15.5%, metabolic energy 12.26 MJ, / kg and calcium 1.0% could meet the needs of muscle and bone fragmentary growth and development of laying ducks.

醉仙鸭

2.育成期育成期是鸭体质、生殖器官和羽毛生长发育的时期。产蛋鸭在育成期,应严厉控制体重。如母鸭体重过重过肥,脂肪堆积过多,会形成产蛋机能妨碍,招致早产、产蛋顶峰期短和产蛋量下降。公鸭过肥,体态轻巧,既不利于精子的正常构成,又不利于交配行爲,形成受精率低。产蛋鸭在120~160d时期应限制豢养,降低日粮营养程度,控制采食量,避免过早产蛋。160日龄后逐步进步日粮蛋白质和代谢能程度。但蛋白贡程度添加不应过快,因而时母鸭还未产蛋,蛋白质需求量不高,如蛋白质添加过猛,将招致“掉啐毛”景象,严重影响鸭的正常开产。
2. Growing period is the period of growth and development of duck physique, reproductive organs and feathers. Laying ducks should strictly control their weight during the breeding period. If the female duck is overweight and overweight, excessive fat accumulation will result in obstruction of egg laying function, premature delivery, short peak period of egg laying and decrease of egg production. Male ducks are overweight and lightweight, which is not conducive to the normal composition of sperm and mating behavior, resulting in low fertilization rate. Laying ducks should be restricted in 120 to 160 days, reduce dietary nutrition, control feed intake and avoid premature eggs. Dietary protein and metabolizable energy levels were progressively improved after 160 days of age. However, the addition of protein tribute should not be too fast, so the duck did not lay eggs, and the demand for protein was not high. If the protein was added too fast, it would cause "spitting" phenomenon, seriously affecting the normal production of ducks.
3.产蛋期产蛋期的日粮应依据不同的生理阶段、产蛋率和环境条件来配制,保证日粮中蛋白质、能量、维生素、微量元素和矿物质的供应,并留意各养分物质之间的均衡。此期假如日粮中蛋白质、能量低,其他养分物质缺乏或缺乏,以及各养分物质之间的比例不均衡,均将形成母鸭体重加重、产蛋率下降、蛋小、蛋壳质量差、种蛋受精率和孵比率下降。产蛋初期日粮蛋白质程度普通以15%~16%爲宜。2~3周后进入产蛋顶峰期,蛋白质程度应进步到17%~18%左右,日粮中氨基酸程度不只保证量的供应而且应坚持均衡,其他养分物质供应也应平衡,这对坚持和延伸母鸭的产蛋顶峰,以及全年产蛋量和种蛋质量至关重要。
3. Diets for laying period should be prepared according to different physiological stages, laying rate and environmental conditions to ensure the supply of protein, energy, vitamins, trace elements and minerals, and pay attention to the balance of nutrients. In this period, if the diet is low in protein and energy, other nutrients are deficient or deficient, and the proportion of nutrients is not balanced, the weight of ducks will increase, the rate of laying eggs will decrease, the size of eggs will be small, the quality of eggshells will be poor, the fertilization rate and hatching rate of eggs will decrease. At the beginning of laying, the protein level of diet was generally 15%-16%. After 2-3 weeks, the egg-laying peak should be reached, and the protein level should be improved to about 17%-18%. The amino acid level in the diet should not only guarantee the supply of quantity, but also maintain the balance of other nutrients. This is very important to maintain and extend the egg-laying peak of ducks, as well as the annual egg production and egg quality.
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