芒果视频下载

漢中(zhong)(zhong)(zhong)白(bai)豬(zhu)(zhu)(zhu)簡稱漢白(bai)豬(zhu)(zhu)(zhu)，主(zhu)產于陜西省(sheng)漢中(zhong)(zhong)(zhong)地區(qu)，屬向(xiang)脂(zhi)型豬(zhu)(zhu)(zhu)種.主(zhu)要用蘇白(bai)豬(zhu)(zhu)(zhu)、巴(ba)克夏豬(zhu)(zhu)(zhu)和漢江黑豬(zhu)(zhu)(zhu)雜交培(pei)育而成。現有豬(zhu)(zhu)(zhu)種多分(fen)布于漢中(zhong)(zhong)(zhong)市、南鄭縣(xian)(xian)和城固縣(xian)(xian)等地、漢中(zhong)(zhong)(zhong)白(bai)豬(zhu)(zhu)(zhu)適應性強、生長快、耐粗飼、嗣體品質好(hao)。該(gai)品種豬(zhu)(zhu)(zhu)頭中(zhong)(zhong)(zhong)等大(da).面微凹，耳中(zhong)(zhong)(zhong)等大(da)小(xiao).向(xiang)上(shang)向(xiang)外伸展。背腰平(ping)直，腿臀(tun)較豐滿。

產地環境與分布

漢(han)(han)(han)中白(bai)豬主產區漢(han)(han)(han)中市(shi)位(wei)于北(bei)亞熱(re)(re)帶，地處(chu)東經106°51~107°10、北(bei)緯33°2~33°22之(zhi)間，屬亞熱(re)(re)帶氣候(hou)(hou)。氣候(hou)(hou)溫暖，雨量充沛(pei)，土壤肥沃(wo)，農業發達。年平均氣溫14.3℃，降雨量 871.8 ，生態環境(jing)良好(hao)(hao)，主要(yao)作(zuo)物有(you)水稻、小(xiao)麥、玉米、甘薯、油菜(cai)等(deng)，農副產品(pin)豐富，青綠飼料(liao)常年種(zhong)植，四季(ji)不斷(duan)，為育成(cheng)漢(han)(han)(han)白(bai)豬提供(gong)良了好(hao)(hao)的飼料(liao)條件(jian)。主要(yao)分布于漢(han)(han)(han)中市(shi)、漢(han)(han)(han)中縣(xian)、勉(mian)縣(xian)、南鄭、城固、洋縣(xian)、西鄉(xiang)、寧強、鎮巴、留壩(ba)等(deng)市(shi)、縣(xian)。

品種特征

中為脂(zhi)肉(rou)兼用型。 被毛全白，膚色全白,部分眼(yan)圈皮膚有(you)小塊黑(hei)斑(ban)，母(mu)豬無(wu)鬃(zong)毛，少數公(gong)豬有(you);體(ti)型較大(da)，體(ti)質結(jie)實(shi)，結(jie)構呈(cheng)長(chang)方形(xing);頭(tou)大(da)小適中，面(mian)側微凹，額部無(wu)皺紋，嘴筒中等;耳(er)中等大(da)小，前沖，不(bu)(bu)下(xia)垂;體(ti)軀長(chang)，背腰平直，腹部下(xia)垂不(bu)(bu)明(ming)顯，臀(tun)部豐(feng)滿度適中;有(you)效(xiao)乳頭(tou)6對以上，排列整(zheng)齊(qi)均勻;四(si)肢結(jie)實(shi)，粗壯，肢勢正常;尾根粗，高(gao)。肋骨(gu)7對;公(gong)豬無(wu)獠牙。

繁殖性能

小(xiao)公(gong)(gong)豬(zhu)(zhu)(zhu)(zhu)(zhu)110日齡、體(ti)重(zhong)(zhong)40公(gong)(gong)斤(jin)(jin)左(zuo)右(you)(you)時(shi)出現爬(pa)跨行為，小(xiao)母豬(zhu)(zhu)(zhu)(zhu)(zhu)120月齡、體(ti)重(zhong)(zhong)35~40公(gong)(gong)斤(jin)(jin)時(shi)出現第一次發情。公(gong)(gong)豬(zhu)(zhu)(zhu)(zhu)(zhu)10月齡、體(ti)重(zhong)(zhong)100公(gong)(gong)斤(jin)(jin)以(yi)上，母豬(zhu)(zhu)(zhu)(zhu)(zhu)8月齡體(ti)重(zhong)(zhong)90公(gong)(gong)斤(jin)(jin)左(zuo)右(you)(you)時(shi)開(kai)始配種。繁殖利用年(nian)限，公(gong)(gong)豬(zhu)(zhu)(zhu)(zhu)(zhu)一般(ban)為4年(nian)，母豬(zhu)(zhu)(zhu)(zhu)(zhu)為6年(nian)。母豬(zhu)(zhu)(zhu)(zhu)(zhu)發情周期一般(ban)為21 天(tian)，發情持續期，經產(chan)(chan)(chan)母豬(zhu)(zhu)(zhu)(zhu)(zhu)2~3天(tian)，初產(chan)(chan)(chan)母豬(zhu)(zhu)(zhu)(zhu)(zhu)4~5天(tian)，斷乳后發情時(shi)間為7天(tian)左(zuo)右(you)(you)。經產(chan)(chan)(chan)母豬(zhu)(zhu)(zhu)(zhu)(zhu)(17頭)排卵數16.06±2.77枚。妊娠期115.43±2.8天(tian)。公(gong)(gong)豬(zhu)(zhu)(zhu)(zhu)(zhu)一次射精量 300~500毫升(sheng)，精子(zi)活力0.7以(yi)上，密度中等(2億左(zuo)右(you)(you))。初產(chan)(chan)(chan)母豬(zhu)(zhu)(zhu)(zhu)(zhu)(215窩)平均產(chan)(chan)(chan)仔(zi)數9.76頭;經產(chan)(chan)(chan)母豬(zhu)(zhu)(zhu)(zhu)(zhu)(173窩)平均產(chan)(chan)(chan)仔(zi)數11.4頭，仔(zi)豬(zhu)(zhu)(zhu)(zhu)(zhu)20日齡窩重(zhong)(zhong)41.46公(gong)(gong)斤(jin)(jin)，60日齡斷乳窩重(zhong)(zhong)108.4公(gong)(gong)斤(jin)(jin)。