二、忌超量擠奶一般奶牛泌乳期為305天,但由於其年齡、胎次、biaoqingjisiyangshuipingdengyinsuyingxiang,youshimiruqihuiyanchanghuosuoduan。eryixieyangniuhucongchanhouyizhijidaomeiyounaishifangcaitingzhijinai,zaochengnainiuguoduxiaohaoyingyang,chuxianfaqingbumingxian、性周期紊亂、較難受孕進而影響泌乳量的提高等問題。因此,在泌乳期內擠奶時,應當讓奶牛有充分的時間來彌補營養的損耗,一般應在斷乳前1個月左右停止擠奶,為奪取下胎較高產奶量打下基礎。
三、忌ji幹gan奶nai期qi減jian料liao奶nai牛niu經jing過guo產chan犢du泌mi乳ru,體ti內nei營ying養yang損sun失shi多duo,加jia上shang懷huai孕yun,胚pei胎tai發fa育yu對dui營ying養yang的de需xu要yao,均jun需xu在zai幹gan奶nai期qi恢hui複fu補bu充chong。而er不bu少shao奶nai牛niu戶hu認ren為wei不bu擠ji奶nai時shi應ying喂wei差cha些xie,便bian大da幅fu度du減jian少shao精jing料liao喂wei養yang,結jie果guo造zao成cheng臨lin產chan奶nai牛niu膘biao情qing嚴yan重zhong下xia降jiang,產chan犢du過guo程cheng延yan長chang,犢du牛niu體ti質zhi瘦shou弱ruo,泌mi乳ru質zhi量liang差cha產chan量liang低di。因yin此ci,奶nai牛niu除chu剛gang幹gan奶nai後hou幾ji天tian和he臨lin產chan前qian幾ji天tian可ke適shi當dang減jian少shao精jing料liao喂wei量liang外wai幹gan奶nai期qi喂wei料liao量liang一yi定ding要yao供gong給gei充chong足zu的de精jing料liao,一yi般ban日ri喂wei量liang以yi占zhan母mu牛niu體ti重zhong的de0.8%為宜。
四、jibushuaniutinainiupifuxinchendaixiemingxian,waijiechentumingan。dangbeimaofuyouganfenbianhuochangyoujishengchongshi,nainiuhuigandaobushufu,changyongshetianhuoyongshenticaganqiangdengfangshichuyang,yingxiangshuimian,xiaohaobubiyaodeyingyang,pingshiyingbaohuniutiweishengqingjie,zuohaotiwaijishengchongdefangzhi,bingjianchimeitianyongshuazi、梳子刷拭一次。
五忌係樁拴養很多奶牛戶習慣將母牛用繩係頸拴養,限製了奶牛的活動,帶來奶牛難產、胎衣不下、發情滯後、體況較差及犢牛發育較慢等不良後果。為此,奶牛平時除拴養外,還必須保證其每天有不少於2小時的戶外活動時間,犢牛應讓其在犢牛欄內自由活動,這樣可有效促進新陳代謝,增加食欲,保證正常繁殖,提高抗病能力。
liujibujiangweishengbushaonainiuhurenweinainiukangbinglihenqiang,yangzhizhongbuzhuyihuanjingxiaoduhesiliaoyinshuiweisheng,wangwangdaozhinainiuranbingsiwang。dongchunjimeizhoubixuyongshengshihui、來蘇爾等對牛舍及周圍環境消毒一次,夏秋每周消毒兩次,並做到飼料、飲水衛生,不喂黴變飼料。
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