體貌
廣(guang)靈大尾(wei)羊(yang)(yang)體(ti)格中(zhong)等,周歲公(gong)羊(yang)(yang)平均體(ti)重(zhong)33.4公(gong)斤(jin)(jin),周歲母羊(yang)(yang)31.5公(gong)斤(jin)(jin),成年(nian)(nian)公(gong)羊(yang)(yang)51.95公(gong)斤(jin)(jin),成年(nian)(nian)母羊(yang)(yang)43.55公(gong)斤(jin)(jin)。成年(nian)(nian)公(gong)羊(yang)(yang)剪(jian)毛(mao)(mao)(mao)量(liang)1.39公(gong)斤(jin)(jin),成年(nian)(nian)母羊(yang)(yang)0.83公(gong)斤(jin)(jin)。根據武德虎(1984)的研究資料,廣(guang)靈大尾(wei)羊(yang)(yang)毛(mao)(mao)(mao)被屬異(yi)質毛(mao)(mao)(mao),其纖(xian)維類型組成為:無髓(sui)(sui)毛(mao)(mao)(mao)占(zhan)53.5%,兩(liang)型毛(mao)(mao)(mao)占(zhan)153.5%,有髓(sui)(sui)毛(mao)(mao)(mao)占(zhan)30.6%,干死毛(mao)(mao)(mao)占(zhan)0.6%。
體軀呈長方形,四肢結(jie)實端正,尾回方,寬(kuan)度略大于長度,多(duo)數(shu)有小尾,向上(shang)翹起。公羊羊尾可垂至(zhi)飛節(jie)。色純(chun)白,雜色者少(shao),被毛著生良好(hao),絨(rong)毛適中,呈明顯的毛股結(jie)構,干死毛極少(shao)。體質(zhi)結(jie)實緊湊,耐粗飼 ,適應性強,增(zeng) 重速度快,出(chu)肉率高,肉質(zhi)良好(hao),細嫩鮮(xian)美, 無(wu)座味。生長期短,周轉速度快, 遺傳性能穩定。
外觀特征
廣(guang)靈(ling)大(da)(da)尾(wei)羊(yang)頭中等(deng)大(da)(da)小,耳略下垂,公(gong)羊(yang)有(you)角(jiao)(jiao),母羊(yang)無角(jiao)(jiao),頸細而圓,體(ti)型呈長方形,四肢強健(jian)有(you)力。脂尾(wei)呈方圓形,寬(kuan)度略大(da)(da)于(yu)長度,多數有(you)小尾(wei)尖向上(shang)(shang)翹起;成年(nian)(nian)公(gong)羊(yang)尾(wei)長21.84厘米,尾(wei)寬(kuan)22.44厘米,尾(wei)厚7.93厘米,成年(nian)(nian)母羊(yang)上(shang)(shang)述指標相應為(wei)18.69厘米。毛色純白,雜色者很少。
生產特性
廣靈大(da)尾羊(yang)(yang)6—8月齡(ling)性(xing)成熟,初(chu)配年齡(ling)一般在(zai)1.5—2歲,母羊(yang)(yang)春、夏、秋三(san)季均可(ke)發情配種(zhong),在(zai)良好的飼養管(guan)理條件下,可(ke)一年兩產(chan)或(huo)兩年三(san)產(chan),產(chan)羔率102%。
生長特性
廣靈(ling)大(da)尾(wei)(wei)羊生長發育(yu)快,成熟早,產肉力(li)羔。8月(yue)齡羯羊除放牧外(wai),每日補(bu)飼精料0.25公(gong)(gong)斤(jin)(jin),共(gong)補(bu)飼120天,到(dao)1歲時活重達61.9公(gong)(gong)斤(jin)(jin),胴(dong)(dong)體(ti)(ti)重35.41公(gong)(gong)斤(jin)(jin),凈肉重23.6公(gong)(gong)斤(jin)(jin),脂(zhi)尾(wei)(wei)重占胴(dong)(dong)體(ti)(ti)重的(de)16.1%;成年羯羊(中等膘)宰(zai)前活重平均44.3公(gong)(gong)斤(jin)(jin),胴(dong)(dong)體(ti)(ti)重23.17公(gong)(gong)斤(jin)(jin),凈肉重15.7公(gong)(gong)斤(jin)(jin),脂(zhi)尾(wei)(wei)重2.8公(gong)(gong)斤(jin)(jin),屠宰(zai)率52.3%,凈肉率67.8%,脂(zhi)尾(wei)(wei)重占胴(dong)(dong)體(ti)(ti)重的(de)11.7%。
它增長速度快,育肥效果好,肉質鮮嫩,皮(pi)毛(mao)品質好。成年羊(yang),體(ti)高62厘(li)米(mi)以上,體(ti)重50公斤左右,尾長18—21厘(li)米(mi),尾寬(kuan)19—22厘(li)米(mi),尾厚5.5—7.9厘(li)米(mi)。
產肉特性
廣靈大尾羊(yang)一般是(shi)11個月(yue)后(hou)即可屠宰(zai)。曾(ceng)經試(shi)宰(zai)9只(zhi)(zhi)羊(yang),每(mei)只(zhi)(zhi)羊(yang)飼(si)養13.5個月(yue),平均(jun)活重66公(gong)(gong)斤(jin),屠宰(zai)后(hou)胴(dong)體重38.42公(gong)(gong)斤(jin),其中凈肉(rou)33.3公(gong)(gong)斤(jin),肉(rou)脂重2.7公(gong)(gong)斤(jin),尾脂重8公(gong)(gong)斤(jin),頭蹄重4.07公(gong)(gong)斤(jin),內臟(zang)總重5.56公(gong)(gong)斤(jin)。
主要產地
原產于山西省北部的(de)廣靈縣及其周圍地區(qu)。是草原地區(qu)的(de)蒙古羊帶入農區(qu)以(yi)后,在當地生態經濟條件下和(he)群眾長期選擇(ze)、精心飼養(yang)管理(li)、閉鎖繁育形成的(de)地方肉脂兼(jian)用的(de)優(you)良綿羊品種。
主要價值
廣靈大(da)尾羊是以產肉為主,產皮毛(mao)(mao)(mao)(mao)(mao)為輔的兼(jian)用型羊種。具有(you)極高的經濟(ji)價值。廣靈大(da)尾羊皮板致密,絨(rong)毛(mao)(mao)(mao)(mao)(mao)豐滿(man),毛(mao)(mao)(mao)(mao)(mao)色(se)純白,粗細毛(mao)(mao)(mao)(mao)(mao)比例適中(zhong),達到收購一級皮的標準(zhun)。根(gen)據12張羊皮測定(ding),平(ping)均(jun)長87.7厘米(mi)(mi),寬48.7厘米(mi)(mi),面積4366.7平(ping)方厘米(mi)(mi)。羊毛(mao)(mao)(mao)(mao)(mao)品質(zhi):根(gen)據10只成(cheng)年(nian)母羊側白羊毛(mao)(mao)(mao)(mao)(mao)分析:毛(mao)(mao)(mao)(mao)(mao)被屬(shu)于(yu)異質(zhi)毛(mao)(mao)(mao)(mao)(mao)。其纖維(wei)類(lei)型組成(cheng):絨(rong)毛(mao)(mao)(mao)(mao)(mao)占(zhan)53.5%,兩型毛(mao)(mao)(mao)(mao)(mao)占(zhan)15.3%,發毛(mao)(mao)(mao)(mao)(mao)占(zhan)30.6%,干死毛(mao)(mao)(mao)(mao)(mao)占(zhan)0.6%,外層股長7.5厘米(mi)(mi),底層絨(rong)毛(mao)(mao)(mao)(mao)(mao)長4.4厘米(mi)(mi)。絨(rong)毛(mao)(mao)(mao)(mao)(mao)平(ping)均(jun)直徑24.5微米(mi)(mi)。羊毛(mao)(mao)(mao)(mao)(mao)密度(du)每平(ping)方厘米(mi)(mi)1653根(gen),凈(jing)毛(mao)(mao)(mao)(mao)(mao)率(lv)68.6%。廣靈習慣(guan)于(yu)春抓(zhua)絨(rong),秋剪毛(mao)(mao)(mao)(mao)(mao)。一只成(cheng)年(nian)羊,一般(ban)春抓(zhua)絨(rong)1.22公斤,秋剪毛(mao)(mao)(mao)(mao)(mao)1.54公斤。