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<pre class=\\\"answer-content\\\">Diet nutrition and cannibalism in poultry
Beyond the range of egg birds in the laying rate and egg shell quality are adversely affected. This is mainly because after the imbalance of calcium and phosphorus, expressed as loss of appetite, producing shell eggs, soft egg, breaking a 33 - ⑨ Zhonggu 28 years of mining poultry 20o6 No. 2 loss rate. Protein content of logistics out of curiosity, the other chickens were pecking eggs, then feed into active curiosity. Peck at the egg to form ringworm. However,adidas scarpe, calcium may also cause zinc deficiency produces an incomplete keratinization of skin, induced pecking eggs addiction. According to reports, experimental ducklings fed phosphorus (0.36%) diet to 2 weeks of age all the incidence, morbidity and mortality of 100% and 65% respectively. NRC (1994) recommended calcium requirements of laying hens to 4%,UGG stivali, available P requirement of 0.31%. 5.2 Sodium is the major extracellular electrolytes, is to maintain extracellular fluid osmolality of major components. Serum sodium falls, the secretion of aldosterone excretion of sodium leaving the growth rate and reduce or delay the extracellular sodium to maintain stability. Such as severe lack of sodium, limited by regulation can not fundamentally improve and maintain the osmotic pressure of body fluids, the strong performance of halophilic For poultry, leading to fresh egg addiction, weight loss, reduced egg production. At the same time the lack of salt can cause anal pecking of laying hens. It has been reported, salt deficiency anal pecking of laying hens, and death (Anshu Sheng, 2004). Chicken rearing standards of requirements for the 0.37% salt, natural diet containing only 0.1%. Sodium content can not meet the needs of poultry, must make an additional salt. 5.3 Sulfur Sulfur is required in the body constant mineral elements, the in vivo content of 0.15%. Feed sulfur or sulfur-containing amino acids supply the lack of the main reasons for feather pecking in poultry. The relative concentration of protein in poultry feathers, when the diet is low in sulfur constant, this time led to sulfur metabolism. Decreased feed intake of poultry, slow growth, hair loss de plume, and instinct Linchuan Wei (2001) in poultry diets in the mix of 0.3% ferrous sulfate powder, use 3 to 5 days, can effectively prevent the disease of poultry feather pecking. 5.4 zinc in maintaining normal epithelial cells and superficial morphology, growth ChinaPoultryVoL28, No. 2.2006 and health. The biochemical basis of zinc and sulfur amino acid mucopolysaccharide participation related. Zinc deficiency anorexia, decreased feed intake, feed utilization decreased, so the slow weight gain, developmental delay, skin parakeratosis or hyperkeratosis, sick feathers, dull, damaged, induced feather pecking. Studies have found that zinc deficiency animals, possibly through one or more of the following ways to influence the metabolism of sulfur amino acids: ① the process of sulfur-containing amino acids blocked the formation of protein; ② the formation of sulfur-containing amino acid peptide (eg glutathione) and other blocked the process of material; ③ nucleic acid metabolism (replication, transcription, etc.) blocked. Zinc deficiency is a metabolic disorder of sulfur amino acids led to cannibalism important reasons (Zhou, 1999). NRC requirements for the zinc layer 44mg/kg. 6 specific nutrients can adjust some special nutrients the body\\\'s physiological balance of chickens,tory burch flats, and promote the absorption of nutrients to improve disease resistance of chickens to reduce the incidence of cannibalism. Studies have shown that the addition of complete feed in about 10% of the grains, can be effective in preventing feather pecking addiction, and make more orderly growth of duck feathers and shiny. The ducks feed in the enzyme preparation can be added to improve feed digestibility and effective in preventing feather pecking test addiction has been confirmed. Also use some of the raw materials containing active yeast can improve digestive function and the effective prevention of Muscovy duck feather pecking addiction, and more glossy feathers (Xu Jiao, 2000). Japan humic acid made from an organic natural rubber ions, after drying as an additive (add 4% -8%), chickens, acid-base balance of the body can be adjusted so as to enhance egg laying ability and resistance to disease,mbt shoes italia, and to prevent the chicken pecking anal. 7 birds in a variety of other factors, stress and under the circumstances moldy feed energy, protein and other nutrients greatly increased requirements, essential amino acids, vitamins, and some special nutritional effects of electrolytic ions more evident. At this point, the lack of nutrients caused by a variety of chickens through the drinking behavior to compensate for different nutritional deficiencies, the formation of cannibalism. 8 Conclusion Many factors influence cannibalism, so we developed formula should take into account all nutritional substances in the body is not isolated, they are cooperative, mutual transformation, mutual antagonism, mutual substitution relationship. Practical applications, can be protected by microencapsulation of vitamin in the storage,keen shoes sale, processing without being damaged by oxidation. When considering a particular nutrient, should be considered associated with it in other nutrients or dietary anti-nutritional factors, the level of various nutrients as much as possible consistent with the best needs of the poultry. Mouth of a 34 -
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