二、提ti高gao蛋dan白bai質zhi的de生sheng物wu學xue價jia值zhi。采cai用yong理li想xiang的de蛋dan白bai質zhi模mo式shi,改gai善shan蛋dan白bai質zhi中zhong各ge種zhong氨an基ji酸suan的de平ping衡heng狀zhuang況kuang,可ke提ti高gao蛋dan白bai質zhi的de生sheng物wu學xue利li用yong價jia值zhi,有you效xiao降jiang低di飼si料liao粗cu蛋dan白bai質zhi水shui平ping,提ti高gao飼si料liao中zhong氮dan的de利li用yong率lv,減jian少shao糞fen便bian中zhong氮dan的de排pai泄xie量liang。這zhe樣yang既ji可ke節jie省sheng大da量liang的de天tian然ran蛋dan白bai質zhi飼si料liao資zi源yuan,又you可ke減jian輕qing集ji約yue化hua水shui產chan養yang殖zhi對dui環huan境jing的de氮dan汙wu染ran程cheng度du。
三、合(he)理(li)使(shi)用(yong)添(tian)加(jia)劑(ji)。部(bu)分(fen)添(tian)加(jia)劑(ji)的(de)合(he)理(li)使(shi)用(yong)可(ke)以(yi)在(zai)一(yi)定(ding)程(cheng)度(du)上(shang)改(gai)善(shan)飼(si)料(liao)的(de)品(pin)質(zhi)和(he)風(feng)味(wei),促(cu)進(jin)水(shui)產(chan)動(dong)物(wu)攝(she)食(shi),提(ti)高(gao)飼(si)料(liao)的(de)利(li)用(yong)率(lv),從(cong)而(er)可(ke)以(yi)減(jian)輕(qing)對(dui)水(shui)體(ti)環(huan)境(jing)的(de)汙(wu)染(ran)程(cheng)度(du)。
1、肽製劑:taishiyizhonggaoxiaodeshengwuhuoxingwuzhi,wuyaowucanliu,buhuichanshengkangyaoxing。weilejiangdisiliaochengben,zaipeizhishuichansiliaoshiwangwangxuyaotianjiayidingliangdezhiwuxingyuanliao。shiyongtaizhijihoubujinkeyigaishansiliaodeshikouxing,erqiehaikeyiquanmiancujinsiliaoyingyangchengfendexiaohuahexishou,tigaosiliaoliyonglv,congerdadajianshaoshuichandongwupaixiewuzhongdeyoujiwu、氮磷等營養物質的排出量,減少飼料中未消化物質對水環境的汙染。
2、高效礦物質:雖sui然ran水shui產chan動dong物wu可ke以yi從cong水shui環huan境jing中zhong吸xi收shou一yi部bu分fen礦kuang物wu質zhi,但dan仍reng不bu能neng滿man足zu生sheng長chang需xu要yao,因yin此ci必bi須xu在zai飼si料liao中zhong補bu充chong一yi定ding量liang的de礦kuang物wu質zhi。目mu前qian大da部bu分fen飼si料liao礦kuang物wu質zhi添tian加jia劑ji的de使shi用yong還hai停ting留liu在zai無wu機ji鹽yan階jie段duan,而er以yi無wu機ji鹽yan形xing式shi添tian加jia的de礦kuang物wu質zhi在zai動dong物wu體ti內nei利li用yong率lv極ji低di,容rong易yi導dao致zhi添tian加jia量liang不bu斷duan增zeng加jia,對dui環huan境jing的de汙wu染ran也ye越yue來lai越yue嚴yan重zhong。采cai用yong有you機ji鹽yan形xing式shi的de礦kuang物wu質zhi添tian加jia劑ji則ze可ke以yi提ti高gao礦kuang物wu質zhi的de生sheng物wu利li用yong率lv,減jian少shao其qi在zai飼si料liao中zhong的de添tian加jia量liang,減jian輕qing對dui環huan境jing造zao成cheng的de汙wu染ran,從cong而er達da到dao降jiang低di生sheng產chan成cheng本ben的de目mu的de。
四、改善加工工藝。飼料加工工藝(如粉碎、混合、製粒以及膨化等)可影響水產動物對飼料營養成分的利用率,在生產水產飼料時,應該根據不同品種的生活習性、不同的發育階段以及不同的生理機能,采用相應的生產工藝,配製適合其攝食和消化的優質飼料。
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