芒果视频下载

漢中白豬(zhu)簡稱漢白豬(zhu)，主(zhu)產于陜西(xi)省漢中地區，屬向脂型豬(zhu)種.主(zhu)要(yao)用蘇白豬(zhu)、巴克夏豬(zhu)和(he)漢江黑豬(zhu)雜交培育而(er)成。現(xian)有豬(zhu)種多(duo)分布(bu)于漢中市、南(nan)鄭縣和(he)城固縣等(deng)地、漢中白豬(zhu)適應性強(qiang)、生(sheng)長快、耐粗飼、嗣體品質(zhi)好。該品種豬(zhu)頭(tou)中等(deng)大.面(mian)微凹，耳(er)中等(deng)大小.向上向外(wai)伸展。背腰平直，腿臀較豐滿。

產地環境與分布

漢(han)(han)中(zhong)(zhong)白豬主(zhu)(zhu)產(chan)區(qu)漢(han)(han)中(zhong)(zhong)市(shi)位(wei)于北(bei)亞熱帶(dai)，地處東經106°51~107°10、北(bei)緯33°2~33°22之間，屬(shu)亞熱帶(dai)氣候(hou)(hou)。氣候(hou)(hou)溫暖，雨量充沛，土壤肥沃，農業發達。年(nian)平均(jun)氣溫14.3℃，降雨量 871.8 ，生態(tai)環境良好(hao)，主(zhu)(zhu)要作物有水稻、小麥(mai)、玉米、甘(gan)薯、油菜等，農副(fu)產(chan)品豐富，青(qing)綠(lv)飼料(liao)常年(nian)種植，四季不斷，為育(yu)成漢(han)(han)白豬提供良了好(hao)的飼料(liao)條件(jian)。主(zhu)(zhu)要分布(bu)于漢(han)(han)中(zhong)(zhong)市(shi)、漢(han)(han)中(zhong)(zhong)縣(xian)、勉縣(xian)、南鄭、城固、洋縣(xian)、西鄉、寧強(qiang)、鎮巴、留(liu)壩(ba)等市(shi)、縣(xian)。

品種特征

中(zhong)為(wei)脂(zhi)肉兼用型。 被毛(mao)全(quan)白，膚(fu)色全(quan)白,部分眼圈皮膚(fu)有小塊黑斑，母(mu)豬(zhu)無(wu)鬃毛(mao)，少(shao)數公(gong)豬(zhu)有;體(ti)型較大，體(ti)質結(jie)實，結(jie)構(gou)呈(cheng)長(chang)方形(xing);頭(tou)大小適中(zhong)，面側微凹，額(e)部無(wu)皺紋，嘴(zui)筒中(zhong)等(deng);耳中(zhong)等(deng)大小，前沖，不下(xia)垂;體(ti)軀長(chang)，背(bei)腰平直，腹部下(xia)垂不明顯，臀部豐(feng)滿度適中(zhong);有效(xiao)乳頭(tou)6對以上，排列整齊均勻;四肢結(jie)實，粗壯，肢勢(shi)正常;尾(wei)根粗，高。肋骨7對;公(gong)豬(zhu)無(wu)獠牙。

繁殖性能

小(xiao)公(gong)(gong)(gong)(gong)豬(zhu)(zhu)(zhu)(zhu)110日(ri)齡(ling)(ling)、體(ti)重(zhong)(zhong)(zhong)40公(gong)(gong)(gong)(gong)斤(jin)左(zuo)右時出現爬跨行為(wei)(wei)(wei)，小(xiao)母豬(zhu)(zhu)(zhu)(zhu)120月齡(ling)(ling)、體(ti)重(zhong)(zhong)(zhong)35~40公(gong)(gong)(gong)(gong)斤(jin)時出現第一(yi)次(ci)發情(qing)。公(gong)(gong)(gong)(gong)豬(zhu)(zhu)(zhu)(zhu)10月齡(ling)(ling)、體(ti)重(zhong)(zhong)(zhong)100公(gong)(gong)(gong)(gong)斤(jin)以(yi)上，母豬(zhu)(zhu)(zhu)(zhu)8月齡(ling)(ling)體(ti)重(zhong)(zhong)(zhong)90公(gong)(gong)(gong)(gong)斤(jin)左(zuo)右時開始配種。繁殖利用年限，公(gong)(gong)(gong)(gong)豬(zhu)(zhu)(zhu)(zhu)一(yi)般為(wei)(wei)(wei)4年，母豬(zhu)(zhu)(zhu)(zhu)為(wei)(wei)(wei)6年。母豬(zhu)(zhu)(zhu)(zhu)發情(qing)周期一(yi)般為(wei)(wei)(wei)21 天(tian)，發情(qing)持續期，經產(chan)(chan)(chan)母豬(zhu)(zhu)(zhu)(zhu)2~3天(tian)，初產(chan)(chan)(chan)母豬(zhu)(zhu)(zhu)(zhu)4~5天(tian)，斷乳后發情(qing)時間(jian)為(wei)(wei)(wei)7天(tian)左(zuo)右。經產(chan)(chan)(chan)母豬(zhu)(zhu)(zhu)(zhu)(17頭)排卵(luan)數16.06±2.77枚。妊娠期115.43±2.8天(tian)。公(gong)(gong)(gong)(gong)豬(zhu)(zhu)(zhu)(zhu)一(yi)次(ci)射精量 300~500毫升，精子活力0.7以(yi)上，密度中等(deng)(2億左(zuo)右)。初產(chan)(chan)(chan)母豬(zhu)(zhu)(zhu)(zhu)(215窩)平均(jun)產(chan)(chan)(chan)仔(zi)數9.76頭;經產(chan)(chan)(chan)母豬(zhu)(zhu)(zhu)(zhu)(173窩)平均(jun)產(chan)(chan)(chan)仔(zi)數11.4頭，仔(zi)豬(zhu)(zhu)(zhu)(zhu)20日(ri)齡(ling)(ling)窩重(zhong)(zhong)(zhong)41.46公(gong)(gong)(gong)(gong)斤(jin)，60日(ri)齡(ling)(ling)斷乳窩重(zhong)(zhong)(zhong)108.4公(gong)(gong)(gong)(gong)斤(jin)。