CN112400803B - 舍饲母羊1年2胎繁殖方法 - Google Patents
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- A—HUMAN NECESSITIES
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Abstract
本发明涉及养殖技术领域,提供舍饲母羊1年2胎繁殖方法,所述母羊为肉羊母体,对母羊配种时间和发情进行调节;对母羊围产期营养保健和产后保健进行调控;当母羊产糕后进行早期断奶分饲,并对羔羊做早期补饲和补硒,提高羔羊成活率。有益效果:实现舍饲母羊1年两胎,怀孕期平均150天;哺乳期21‑28天;断奶后3‑15天配种,第一情期受胎率可达80‑85%,总受胎率90%,两胎周期平均370天,羔羊存活率99.2%以上。
Description
技术领域
本发明涉及养殖技术领域,特别涉及舍饲母羊1年2胎繁殖方法。
背景技术
几只母羊实现1年2胎并不难,难的是让几百只母羊都达到1年2胎。规模化自繁自养羊场能不能盈利关键看母羊繁殖效率。羊的规模化舍饲远远落后于鸡、猪、奶牛等畜禽,原因在于鸡、猪、奶牛解决了制度化的繁殖技术问题。羊的繁殖受季节影响较大,羊的发情配种季节主要在秋季,一部分在春节。一般羊场执行的是“2年3胎”繁殖制度,3胎中有2胎发生在非繁殖季节。在非繁殖季节羊的发情率、受胎率都很低。
母羊实现1年2胎繁殖周期是182.5天,而怀孕占去150天,产后哺乳和发情配种只剩下32.5天左右,困难在于母羊不断奶是不会发情的,传统技术条件下,羔羊过早断奶其成活率大大降低。因此,需要提供一种新的技术来促使规模化舍饲母羊实现1年2胎繁殖并且同时提高羔羊的成活率。
发明内容
本发明的目的在于提供舍饲母羊1年2胎繁殖方法,以解决上述背景技术中提出的问题。
为实现上述目的,本发明采用如下技术方案:舍饲母羊1年2胎繁殖方法,所述母羊为肉羊母体,对母羊配种时间和发情进行调节;对母羊围产期营养保健和产后保健进行调控;当母羊产羔后进行早期断奶分饲,并对羔羊做早期补饲和补硒,提高羔羊成活率。
优选的,母羊第一情期配种时间调节为:春、秋两季配种,提前发情的母羊不配种,超过配种期不发情、不怀孕的母羊淘汰,过期不配;所述春季为3-5月,秋季为9-11月。
优选的,对产后母羊进行血配,即母羊产后28天后连续3天每天盲目阴道输精1次。
优选的,母羊发情调节为光照调节,即1月2月每天光照14小时,不足部分通过补光灯补光;3-5月春季为母羊配种时间,从3月2日起,启用遮光帘,以3月1日自然光照时间为基础,每日递减光照时间2分钟,持续到配种结束或春季结束。
优选的,母羊围产期营养保健采用日粮配方加基础保健配方,所述日粮配方为:秸秆和干草粉55%~60%,精料占40%~45%;
所述精料的配方为:以下原料按重量比,玉米52%、麸皮20%、豆饼15%、杂饼或饲料酵母6%、石粉2%、磷酸二氢钙1%、碳酸氢钠2%、食盐1%、微量元素与维生素添加剂1%;
所述基础保健配方为:90%含量卵磷脂1kg、维生素ADE粉1kg、精料500kg;基础保健配方从产前一个月开始到断奶连续添加;所述维生素ADE粉中维生素A≥500万IU/kg、维生素D3≥100万IU/kg、维生素E≥3000IU/kg、水分≤10%。
优选的,所述早期断奶分饲为:单羔哺乳期28天,双羔哺乳期25天,多羔哺乳期21天。
优选的,所述产后保健指春季空怀母羊每天拌料饲喂15-20g/只“好来喜”。
优选的,所述羔羊早期补饲和补硒为:羔羊补饲:7—10日龄诱食优质青干草;10—15日龄诱食代乳料;补硒:1周龄以内0.1%亚硒酸钠溶液皮下注射1ml/只;断奶皮下注射0.1%亚硒酸钠溶液2ml/只;间隔三个月皮下注射0.1%亚硒酸钠溶液2ml/只。
优选的,所述代乳料中添加“鑫维康”和90%含量卵磷脂,每天每只羔羊各1g,从15日龄开始至45日龄结束。
有益效果:实现舍饲母羊1年两胎,怀孕期平均150天;哺乳期21-28天;断奶后3-15天配种,第一情期受胎率可达80-85%,总受胎率90%,两胎周期平均370天,羔羊存活率99.2%以上。
具体实施方式
通过对实施例的描述,对本发明作进一步详细说明,目的是帮助本领域的技术人员对本发明的构思、技术方案有更完整、准确和深入的理解,并有助于其实施。
实施例1
舍饲母羊1年2胎繁殖方法,用于舍饲肉羊,包括山羊、绵羊等;通过对母羊配种时间和发情进行调节;对母羊围产期营养保健和产后保健进行调控;当母羊产糕后进行早期断奶分饲,并对羔羊做早期补饲和补硒,提高羔羊成活率。具体实践中,分为以下几步:
一、配种计划:坚持春秋两季配种,提前发情的母羊不配种,超过配种期不发情、不怀孕的母羊淘汰,过期不配。所述春季为3-5月,秋季为9-11月。
二、母羊发情及母羊围产期营养保健和产后保健
1、搞好母羊围产期营养保健
基础保健:卵磷脂(含量90%)1kg+维生素ADE粉1kg,拌精料500kg,产前一个月开始到断奶连续添加。
卵磷脂具有很好的乳化作用,可提升油脂利用率,降低脂肪肝的发生,同时节约油脂、胆碱和抗氧化剂等,预防酮血症。
维生素ADE粉含量:维生素A≥500万IU/kg、维生素D3≥100万IU/kg、维生素E≥3000IU/kg、水分≤10%。维生素ADE提高机体免疫力和抗病力,缓解畜禽各类应激,促进动物健康成长,促进动物钙磷吸收,预防肢蹄病、流产死胎、产前产后瘫痪等。
精料(配合料)配方:玉米52%、麸皮20%、豆饼15%、杂饼或饲料酵母6%、石粉2%、磷酸二氢钙1%、碳酸氢钠2%、食盐1%、微量元素与维生素添加剂1%。
母羊的日粮配方,秸秆和干草粉可占55%~60%,精料占40%~45%。
作用:①预防母羊妊娠毒血症;②预防母羊产后瘫、产后不食;③降低弱羔率;④奶水充足、奶水质量好;⑤断奶后发情及时、下胎双羔率、多羔率提高明显。
2、早期断奶。单羔哺乳期28天,双羔哺乳期25天,特别多羔哺乳期21天。必须以羔羊保成活技术为前提,有了这个技术保障,早期断奶对母羊、羔羊生产力发挥都有利。选用质量可靠的商品代乳料,保持环境清洁和适当的温度。
3、产后保健
产后3—5天要尽量做好补血、补气、补能、补钙。促进子宫复位。母羊配种前要抓“短期优饲”,春季空怀母羊可以配合使用“好来喜”,每只空怀母羊每天拌料饲喂15-20g。
“好来喜”是山川生物科技(武汉)有限公司的产品。产品成分:曲菌属提取物、β—胡萝卜素、酵母、天然VE。产品功效:增加母羊的生殖能力,提高受胎率。预防繁殖障碍,对于弱发情或不发情的羊,具有良好的激发效果;改善精液品质,增加精子活力,提高受精率;可明显缩短分娩时间,促进内容物的排出,减少乳房炎、生殖道感染,增加泌乳量,提高乳汁质量;调节各种激素的分泌,促进机体健康发育,改善体质;提高机体的免疫机能,可有效降低应激的影响,具有抗生素的功能而无副作用;增进内分泌作用,促进羊的消化机能,有效提高饲料转化率。
4、血配研究
家畜产后第一次排卵不出现发情征状,马、驴、兔、小尾寒羊等具有血配实践。申请人经研究发现,母羊产后第一次排卵发生时间3-4周,产后28天连续3天每天盲目阴道输精1次,如果巧遇排卵就可能怀孕。对于不发情的母羊通过输精能够促使其发情。
5、光照控制调节发情
羊是短日照发情动物,秋天发情春天产羔最有利于其繁衍,是自然选择的结果。采取1年2产一次配种选择在繁殖季节,另一次是在非繁殖季节,采取2年3产一次配种选择在繁殖季节,另两次都在非繁殖季节。在非繁殖季节现有的多数羊场采用激素栓塞或注射进行发情调节、虽然能达到发情配种的目的、但种羊利用年限大大缩短、同时还造成母羊体质下降多病。
本申请根据羊的生物学特性采取环境控制(主要是光照控制,其次是温度控制)促使母羊在非繁殖季节正常发情,该方案效果好、成本低。光照控制方案如下(以2019年为例):
1月1日起(天亮07:05:33,天黑17:29:55,亮光10:24:22),利用感光器控制补光03:36:00,每天递减灯光1.4分钟,每天维持光照14小时;
2月1日起(天亮06:54:22,天黑18:01:22,亮光11:07:22),此时补光减少到02:53:00,利用感光器控制补光每天递减灯光3.86分钟,每天维持光照减少2分钟;14小时
3月1日起(天亮06:20:59,天黑18:32:33,亮光12:11:34)不再补光。从3月2日启用遮光帘,早上06:22:00定时卷起,下午18:31:00放下,3月3日早上06:23:00定时卷起,下午18:30:00放下,一直类推,每天维持光照减少2分钟,直到配种结束或到5月底。
3-5月份气温适宜,不需要调控。
三、提高羔羊成活率
1、羔羊及时补饲:7—10日龄适当诱食优质青干草;
10—15日龄诱食代乳料。
2、补硒:1周龄以内0.1%亚硒酸钠溶液皮下注射1ml/只;
断奶皮下注射0.1%亚硒酸钠溶液2ml/只;
间隔三个月皮下注射0.1%亚硒酸钠溶液2ml/只。
3、提高羔羊体质、防病促生长、促进消化机能健全:
将山川生物“鑫维康”、卵磷脂(含量90%)拌入代乳料中饲喂,每天每只羔羊各1g,15日龄开始—45日龄结束共30天。羔羊成活率高、健康活泼、60日龄每只多增重1—1.5kg,以后的生长优势更加明显。代乳料无特定产品,但符合“NY T 2999-2016羔羊代乳料”要求即可。
4、早期断奶对羔羊以后的生长发育有利,但其保健培育不容忽视。诱补草、料要及时,代乳品质量和进食温度要稳定有保障,营养保健要跟上,个别有毛病尽量不用抗生素、可选用植物精油去防治。
不同营养保健生产效益对比如表1所示:
表1
四、基础设施
1、羊舍清洁卫生,空气新鲜。产羔房配备温水供应系统,保证母子冬季饮用温水。产羔房、母羊舍配备遮光帘和补光控制系统。
2、配置羔羊保育舍,配备恒温版、代乳品哺乳设备,供应温水。
以往经验认为羔羊45日龄以上断奶比较安全,产后母羊体能也逐渐得到恢复,等待发情后进入下一个繁殖周期。申请人研究发现,母羊正常产羔后在不哺乳的情况下,采取保健措施促进子宫复原和内分泌协调,一个月内可以发情配种。本申请的早期断奶技术可以使20日龄断奶的羔羊达到正常的成活率,特别是一胎多羔成活率高于正常哺乳羔羊,并且生长速度明显提高。母羊哺乳期短、失重小、配合上述围产期营养保健和产后保健,都能够及时发情配种,并且下一胎双羔会明显提高。产羔数越多越要提前断奶,否则对母子伤害都很大,母羊严重亏虚,羔羊营养不足。
以上对本发明进行了示例性描述,只要是采用了本发明的方法构思和技术方案进行的各种非实质性的改进;或未经改进,将本发明的上述构思和技术方案直接应用于其它场合的,均在本发明的保护范围之内。
Claims (1)
1.舍饲母羊1年2胎繁殖方法,所述母羊为肉羊母体,其特征在于:对母羊配种时间和发情进行调节,对产后母羊进行血配;对母羊围产期营养保健和产后保健进行调控;当母羊产羔后进行早期断奶分饲,并对羔羊做早期补饲和补硒,提高羔羊成活率;
母羊配种时间调节为:春、秋两季为配种期,提前发情的母羊不配种,超过配种期不发情、不怀孕的母羊淘汰,过配种期不配;所述春季为3-5月,秋季为9-11月;
母羊发情调节为光照调节,即1月2月每天光照14小时,不足部分通过补光灯补光;3-5月春季为母羊配种时间,从3月2日起,启用遮光帘,以3月1日自然光照时间为基础,每日递减光照时间2分钟,持续到春季结束;
所述血配为母羊产后28天后连续3天每天盲目阴道输精1次;
母羊围产期营养保健采用日粮配方加基础保健配方,所述日粮配方为:按重量比,秸秆和干草粉55%~60%,精料占40%~45%;
所述精料的配方为:以下原料按重量比,玉米52%、麸皮20%、豆饼15%、杂饼或饲料酵母6%、石粉2%、磷酸二氢钙1%、碳酸氢钠2%、食盐1%、微量元素与维生素添加剂1%;
所述基础保健配方为:90%含量卵磷脂1kg、维生素ADE粉1kg、精料500kg;基础保健配方从产前一个月开始到断奶连续添加;
所述早期断奶分饲为:单羔哺乳期28天,双羔哺乳期25天,多羔哺乳期21天;
所述羔羊早期补饲和补硒为:羔羊补饲:7—10日龄诱食优质青干草;10—15日龄诱食代乳料;补硒:1周龄以内0.1%亚硒酸钠溶液皮下注射1ml/只;断奶皮下注射0.1%亚硒酸钠溶液2ml/只;间隔三个月皮下注射0.1%亚硒酸钠溶液2ml/只。
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