體貌
廣(guang)靈(ling)大尾羊體格(ge)中等,周歲(sui)公(gong)(gong)羊平均(jun)體重33.4公(gong)(gong)斤(jin)(jin)(jin)(jin),周歲(sui)母(mu)羊31.5公(gong)(gong)斤(jin)(jin)(jin)(jin),成(cheng)(cheng)年(nian)公(gong)(gong)羊51.95公(gong)(gong)斤(jin)(jin)(jin)(jin),成(cheng)(cheng)年(nian)母(mu)羊43.55公(gong)(gong)斤(jin)(jin)(jin)(jin)。成(cheng)(cheng)年(nian)公(gong)(gong)羊剪毛(mao)(mao)量1.39公(gong)(gong)斤(jin)(jin)(jin)(jin),成(cheng)(cheng)年(nian)母(mu)羊0.83公(gong)(gong)斤(jin)(jin)(jin)(jin)。根據武德虎(1984)的研究資料,廣(guang)靈(ling)大尾羊毛(mao)(mao)被屬異質毛(mao)(mao),其纖(xian)維類型組成(cheng)(cheng)為(wei):無髓毛(mao)(mao)占(zhan)53.5%,兩(liang)型毛(mao)(mao)占(zhan)153.5%,有髓毛(mao)(mao)占(zhan)30.6%,干死毛(mao)(mao)占(zhan)0.6%。
體軀呈長(chang)方形(xing),四肢(zhi)結(jie)實端正,尾(wei)回方,寬度(du)略大于長(chang)度(du),多數有小尾(wei),向(xiang)上翹起。公(gong)羊羊尾(wei)可垂至飛節。色純白,雜色者少,被(bei)毛(mao)著生良好(hao),絨毛(mao)適(shi)中(zhong),呈明顯的(de)毛(mao)股結(jie)構,干死毛(mao)極少。體質結(jie)實緊(jin)湊,耐粗飼 ,適(shi)應(ying)性強,增 重速度(du)快(kuai),出肉(rou)率(lv)高,肉(rou)質良好(hao),細(xi)嫩鮮(xian)美, 無座味。生長(chang)期短,周轉速度(du)快(kuai), 遺傳性能(neng)穩定。
外觀特征
廣靈大(da)尾羊(yang)頭中等大(da)小,耳略(lve)下垂,公羊(yang)有(you)(you)角,母羊(yang)無(wu)角,頸(jing)細而圓,體型呈長(chang)方形,四肢(zhi)強健有(you)(you)力。脂尾呈方圓形,寬度略(lve)大(da)于長(chang)度,多數有(you)(you)小尾尖向(xiang)上翹起;成年公羊(yang)尾長(chang)21.84厘米,尾寬22.44厘米,尾厚7.93厘米,成年母羊(yang)上述指標(biao)相(xiang)應為18.69厘米。毛色(se)純白,雜色(se)者很少(shao)。
生產特性
廣靈大尾羊6—8月齡性成熟,初(chu)配年(nian)(nian)齡一(yi)般(ban)在(zai)(zai)1.5—2歲(sui),母(mu)羊春、夏(xia)、秋三(san)季均可(ke)發情配種,在(zai)(zai)良(liang)好的(de)飼養管理(li)條件下,可(ke)一(yi)年(nian)(nian)兩(liang)(liang)產或(huo)兩(liang)(liang)年(nian)(nian)三(san)產,產羔率102%。
生長特性
廣靈大尾(wei)羊生長發育快,成(cheng)熟早,產肉力羔。8月(yue)齡羯(jie)羊除放牧(mu)外,每日補飼精(jing)料0.25公(gong)斤,共補飼120天,到1歲(sui)時活(huo)重達61.9公(gong)斤,胴(dong)體重35.41公(gong)斤,凈肉重23.6公(gong)斤,脂尾(wei)重占胴(dong)體重的16.1%;成(cheng)年(nian)羯(jie)羊(中等(deng)膘)宰(zai)(zai)前活(huo)重平均44.3公(gong)斤,胴(dong)體重23.17公(gong)斤,凈肉重15.7公(gong)斤,脂尾(wei)重2.8公(gong)斤,屠宰(zai)(zai)率52.3%,凈肉率67.8%,脂尾(wei)重占胴(dong)體重的11.7%。
它增長速度(du)快,育肥效果好,肉質(zhi)鮮嫩,皮毛(mao)品(pin)質(zhi)好。成年羊,體高(gao)62厘(li)米(mi)以(yi)上,體重50公(gong)斤左右,尾(wei)長18—21厘(li)米(mi),尾(wei)寬(kuan)19—22厘(li)米(mi),尾(wei)厚(hou)5.5—7.9厘(li)米(mi)。
產肉特性
廣靈大尾羊一般是11個月(yue)后即可屠宰(zai)。曾經(jing)試宰(zai)9只羊,每只羊飼養13.5個月(yue),平均活重(zhong)66公(gong)斤,屠宰(zai)后胴體(ti)重(zhong)38.42公(gong)斤,其(qi)中(zhong)凈肉33.3公(gong)斤,肉脂重(zhong)2.7公(gong)斤,尾脂重(zhong)8公(gong)斤,頭蹄重(zhong)4.07公(gong)斤,內臟總重(zhong)5.56公(gong)斤。
主要產地
原(yuan)產于山西省北部(bu)的(de)(de)廣靈縣及其周圍(wei)地(di)區。是草原(yuan)地(di)區的(de)(de)蒙古羊帶入(ru)農(nong)區以后,在當地(di)生態(tai)經濟(ji)條(tiao)件(jian)下和群眾長期(qi)選擇、精心飼養管理、閉(bi)鎖繁育形(xing)成(cheng)的(de)(de)地(di)方肉脂兼用的(de)(de)優良綿羊品種。
主要價值
廣(guang)(guang)靈大(da)尾羊(yang)(yang)是以產肉為(wei)主,產皮毛(mao)(mao)為(wei)輔(fu)的(de)(de)兼用(yong)型(xing)羊(yang)(yang)種。具有極(ji)高的(de)(de)經濟價值。廣(guang)(guang)靈大(da)尾羊(yang)(yang)皮板致密(mi),絨(rong)(rong)毛(mao)(mao)豐滿(man),毛(mao)(mao)色純(chun)白(bai)(bai),粗細毛(mao)(mao)比例適中,達到收購一(yi)級皮的(de)(de)標準(zhun)。根據12張羊(yang)(yang)皮測定,平均(jun)長87.7厘(li)(li)米(mi)(mi),寬48.7厘(li)(li)米(mi)(mi),面積4366.7平方厘(li)(li)米(mi)(mi)。羊(yang)(yang)毛(mao)(mao)品質:根據10只(zhi)成年(nian)母(mu)羊(yang)(yang)側白(bai)(bai)羊(yang)(yang)毛(mao)(mao)分析:毛(mao)(mao)被屬于異質毛(mao)(mao)。其纖(xian)維類(lei)型(xing)組成:絨(rong)(rong)毛(mao)(mao)占(zhan)53.5%,兩型(xing)毛(mao)(mao)占(zhan)15.3%,發毛(mao)(mao)占(zhan)30.6%,干死毛(mao)(mao)占(zhan)0.6%,外層(ceng)(ceng)股(gu)長7.5厘(li)(li)米(mi)(mi),底層(ceng)(ceng)絨(rong)(rong)毛(mao)(mao)長4.4厘(li)(li)米(mi)(mi)。絨(rong)(rong)毛(mao)(mao)平均(jun)直徑24.5微米(mi)(mi)。羊(yang)(yang)毛(mao)(mao)密(mi)度每(mei)平方厘(li)(li)米(mi)(mi)1653根,凈毛(mao)(mao)率(lv)68.6%。廣(guang)(guang)靈習慣于春(chun)抓(zhua)絨(rong)(rong),秋剪(jian)毛(mao)(mao)。一(yi)只(zhi)成年(nian)羊(yang)(yang),一(yi)般春(chun)抓(zhua)絨(rong)(rong)1.22公斤(jin),秋剪(jian)毛(mao)(mao)1.54公斤(jin)。