CAJ | 학술논문

通过将农用硝酸稀土以不同的浓度分别添加到不同种类、不同用途畜禽(肉猪、肉鸡和蛋鸡)日粮中进行饲养试验,研究测定稀土对其生产性能、动物血液生化指标和产品品质的影响,通过大量试验证明畜禽日粮中添加适量稀土可以有效促进畜禽生长,提高产肉、产奶、产蛋能力,降低饲料消耗,提高饲养效益,给出了不同畜禽的适宜添加量.试验同时证明畜禽日粮中添加适量稀土对幼畜(禽)成活率、鸡蛋质量等无不良影响.目前许多国家动物饲养中限制使用抗生素,可以考虑稀土作为家畜安全、廉价的饲料添加荆用于动物生产.
통과장농용초산희토이불동적농도분별첨가도불동충류、불동용도축금(육저、육계화단계)일량중진행사양시험,연구측정희토대기생산성능、동물혈액생화지표화산품품질적영향,통과대량시험증명축금일량중첨가괄량희토가이유효촉진축금생장,제고산육、산내、산단능력,강저사료소모,제고사양효익,급출료불동축금적괄의첨가량.시험동시증명축금일량중첨가괄량희토대유축(금)성활솔、계단질량등무불량영향.목전허다국가동물사양중한제사용항생소,가이고필희토작위가축안전、렴개적사료첨가형용우동물생산.
The experiments were conducted with different domestic animals (pigs, broilers and laying hens) fed the diets supplemented with different levels of agricultural-use nitric acid lanthanide. The objective of the study was to find whether lanthanide elements had any effect on productive performance and product quality of the animals. The results showed that the rare earth elements as feed additive improved growth and egg production, reduced feed consumption, and increased feed efficiency in those domestic animals. Optimal supplemental level of the rare earth elements for different animal species was also found. It was demonstrated that the use of the lower level of lanthanide as feed additives to the diet of the domestic animals has no side effects on livability of young animals as well as quality of eggs products. Since the use of antibiotics as growth promoters in animal feed has been restricted in many countries, the study indicates the possibility of using rare earth elements as safe and inexpensive alternative performance enhancers for pigs, broilers and laying hens.