titlegoeshereoneortwolinesasneeded-資料下載頁
2024-10-24 17:00本頁面
【導(dǎo)讀】訓(xùn)練場(chǎng)地應(yīng)該清潔、干燥、光照良好且無干擾。倒會(huì)羞于再次爬跨。訓(xùn)練區(qū)域大小應(yīng)在8×10英尺左右，以便公豬能夠集中。如有可能,先對(duì)先前接受了訓(xùn)練的公豬采精。使其等于或略高于訓(xùn)練公豬的高度。訓(xùn)練時(shí)間應(yīng)該短些。幾次訓(xùn)練中只是探究豬圈和假母豬。用使公豬安定的聲調(diào)召喚公豬。增加人工授精站的有效工時(shí)。降低精液運(yùn)輸成本。Shelf-lifeis7to14days有效期7～14天
【正文】 r size窩產(chǎn)仔數(shù) +.24 Mating gilts at puberty with a vasectomizedboar increased farrowing rate 用輸精管切除的公豬與初情期小母豬交配可提高分娩率 Study 研究 Gilts mated to sterile boar at puberty用不育公豬與初情期小母豬交配 Gilts were not mated不與小母豬交配 Difference 差異 1 (n = 265) 2 (n = 192) Note: Gilts were mated to fertile boar at second 二情期小母豬與有生育力公豬交配 Mating gilts at puberty with a vasectomized boar increased litter size 用輸精管切除的公豬與初情期小母豬交配可提高窩產(chǎn)仔數(shù) Study研究 Gilts mated to sterile boar at puberty用不育公豬與初情期小母豬交配 Gilts were not mated不與小母豬交配 Difference 差異 1 (n = 265) 2 (n = 192) 3 (n = 98) 4 (n = 34) Note: Gilts were mated to fertile boar at second estrus.用第二情期小母豬與有生育力公豬交配 Pregnancy Diagnosis妊娠診斷 ? Blood tests (23 to 30 days)驗(yàn)血 (23～ 30天 ) – Progesterone (RIA procedure)孕酮 (放射免疫法 ) – Estrone sulphate硫酸雌酮 – Estrone glucuronide葡 (萄 )糖苷酸 雌酮 – Estradiol glucuronide]葡 (萄 )糖苷酸 雌二醇 ? Fecal tests (20 to 21 days)糞檢 (20～ 21天 ) – Progesterone (RIA procedure)孕酮 (放射免疫法 ) – Estrone (ELISA procedure)雌酮 (ELISA)法 ? Urine tests (23 to 30 days)尿檢 (23～ 30天 ) – Conjugated estrone (RIA) 共軛 雌酮 (放射免疫法 ) – Estrone sulphate (immunoenzymatic)硫酸雌酮 (免疫酶法 ) ? Ultrasound techniques超聲波技術(shù) Synchronization of Estrus同期發(fā)情 ? PGF2a – can be effective in shortening the luteal phase after d 12 of the estrous cycle. Usually 2 . injections of 10 mg/ea 12 h PGF2a可有效縮短發(fā)情周期 12天后的黃體期。通常注射二次，每次 10毫克，肌肉注射；二次注射間隔 12小時(shí) ? Matrix – a progestagen? (altrenogest) fed to cycling sows and gilts at 15 mg/d for 14 d. Upon removal of matrix, estrus occurs 6 days later. Costs ~ $(烯丙孕素，為人工合成的孕激素 )飼喂給發(fā)情的母豬和小母豬，每天喂 15毫克，喂 14天。停喂后 6天即發(fā)情。每天每頭 ? Weaning – Weaned sows exhibit estrus by d 3 7 after weaning. This may be bined with administration of PG 600 (~$).斷奶 ——斷奶母豬會(huì)在斷奶后 3～ 7天發(fā)情?？稍跀嗄痰耐瑫r(shí)應(yīng)用 PG600(每劑 )
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