久热在线观看视频_欧美一区久久久_免费精品国产的网站免费观看_偷拍亚洲精品

長毛兔純種繁育以及雜交繁育的技術的區別

發布日期:2023-12-28 來源:http://m.uying888.com 發布人:創始人

純種繁育

Purebred breeding

良種兔的純種育種是指該品種(素)的雄性和雌性兔的配對,使得這個品種的特點可以很好地遺傳到下一代,保持了完好的品種的特點,以及生產性能不斷改進。必須嚴格選擇純種繁殖。長毛兔應選擇具有良好性狀的兔子,如健康,良好的體形和高產量的兔子。科學選擇,為后代傳遞良好品質,不符合標準的不良標準。后代的個體。當長毛兔已形成品種后需要加強詞養管理,注意性狀的不斷鞏固和提高。純種繁育進一步定句繁育種群,品種內部建立品系、品族,防止生活力衰退,并隨時發現和淘汰不同性狀的手代。

The purebred breeding of high-quality rabbits refers to the pairing of male and female rabbits of this breed (element), so that the characteristics of this breed can be well inherited to the next generation, maintaining the characteristics of the intact breed, and continuously improving production performance. Strict selection of purebred reproduction is necessary. Long haired rabbits should choose rabbits with good traits, such as health, good physique, and high yield. Scientific selection, passing on good qualities to future generations, and eliminating substandard standards. Individual offspring. After the long haired rabbit has formed a variety, it is necessary to strengthen the management of breeding and pay attention to the continuous consolidation and improvement of its traits. Pure breed breeding further determines the breeding population, establishes strains and lineages within the variety to prevent decline in vitality, and constantly discovers and eliminates hand generations with different excellent traits.

所謂的“品系”是指來自該品種中同一祖先的后商群。這組后商不僅具有良好的一般特征,而且在一個或幾個特征中脫穎而出。他們之間保持著某種親緣關系,同時他們之間的關系是相似的。該系的育種是指使用各種方法培育該系。

8beebedd-d1e9-411b-8a60-cdd3a01853a5

The so-called "lineage" refers to the later Shang group from the same ancestor in the variety. This group of post quotients not only has good general characteristics, but also stands out among one or several features. They maintain a certain kinship relationship, and their relationship is similar. The breeding of this line refers to the use of various methods to cultivate it.

用這種方法來降低近親程度,經濟效果好。品系繁育選出特別突出、的雄兔,對該雄兔的遺傳性能、繁殖力、生產性能進行詳細鑒定,證明是的雄兔把它定為原祖。用這種雄兔與的雌兔配對,培育出一群具有原祖優點的個體,并具有一定數量即可稱為一個晶系。如從國外引進了的德系的兔子,用雄的德系的兔子與雌的德系的兔子配對,不斷擴大德系的兔子種群。不要與其他品種的兔配種,以免造成血統混亂,生產性能不穩定。

Using this method to reduce the degree of kinship has a good economic effect. The first step in breed breeding is to select a particularly outstanding male rabbit, and to conduct a detailed identification of its genetic performance, reproductive ability, and production performance, proving that the male rabbit is designated as its ancestor. Pairing this type of male rabbit with excellent female rabbits to cultivate a group of individuals with ancestral advantages and a certain number can be called a crystal system. If excellent German rabbits are introduced from abroad, male German rabbits are paired with female German rabbits to continuously expand the population of German rabbits. Do not breed rabbits with other breeds to avoid confusion in bloodline and unstable production performance.

雜交繁育

Hybrid breeding

雜交是指不同品系的長毛兔之間的配對,通過用不同的品種進行雜交來獲得種后代生產性能高的雜種免群,可降低生產成本,提高利潤,長毛兔雜交一代有很強的雜交優勢,成活率高,成長快。有目的地從遠方兔場引進健康種兔,與本場兔雜交;或利用不同品種兔雜交繁育。長毛兔生產中,長毛兔雜交方式有以下三種。

Hybridization refers to the pairing of different strains of long haired rabbits to obtain hybrid offspring with high production performance through hybridization with different varieties, which can reduce production costs and increase profits. The hybrid generation of long haired rabbits has strong hybridization advantages, high survival rate, and fast growth. Purposefully introducing healthy breeding rabbits from distant rabbit farms and crossbreeding with local rabbits; Or cross breed rabbits of different breeds. There are three hybridization methods for producing long haired rabbits.

(1)改良雜交 某一品種長毛兔與另一品種長毛兔之間條交,目的是使某一品種在保持原有品種特性基礎上再吸收另品種的性狀,從而提高其種兔的產毛量和品質。例如,飼養的本地毛兔產毛性能較差,直接影響飼養的經濟利益,為T迅速改變本地毛兔的這種狀況,用本地毛兔作雌本,從外地透用良種雄兔作為父本進行雜交,使之產生產毛性能好的雜種后代,例如用中系的兔子為雌本,與德系的兔子雜交,雜種一代的年產毛量為400~500克,大大超過了純種中系的兔子的產毛量。

(1) The purpose of improving the crossbreeding between a certain breed of long haired rabbit and another breed of long haired rabbit is to enable one breed to absorb the characteristics of another breed while maintaining the original breed characteristics, thereby improving the wool production and quality of its breeding rabbits. For example, the poor wool production performance of locally bred rabbits directly affects the economic benefits of breeding. In order to quickly change the situation of local rabbits, local rabbits are used as female parents, and high-quality male rabbits from other regions are used as male parents for hybridization to produce hybrid offspring with good wool production performance. For example, using Chinese rabbits as female parents and crossing with German rabbits, the annual wool production of the hybrid generation is 400-500 grams, Greatly exceeding the wool production of purebred Chinese rabbits.

(2)育成雜交 就是把兩只兔子或兩只以上的兔子品種去進行雜交,一個兔種必然具有若干品質,例如要產毛性能,就型然要在體格、毛密度、毛的生長速度及其他各品質上表現,面實際上不可能每只種免都使這么多品質保持在水平上。為了保持該免種的這些性狀,就必須選擇具有不同特性的種兔,譬如某兔的毛密度性能特別,另一種免的毛品質特別,以它們為基礎建立成各個晶系,以后通過品系間的雜交使后代兼備這幾個品系的特點。因為品系間的親撐茶一般遠,所以通過晶系間兔子的配對也可避免不恰當的近交如法國戴葆斯選用了灰色野兔、喜馬拉雅兔和藍色兔作為豪本箱 于1913年育成青紫藍兔,使其兔皮毛具有獨特的青紫藍色彩,深受消費者青睞。如今在國內培育粗毛型長毛兔的過程中,也應用過這種雜交的手段。

(2) Breeding crossbreeding is the process of crossbreeding two or more rabbit breeds. Each rabbit breed must possess several qualities, such as the ability to produce wool, which must be reflected in its physique, wool density, wool growth rate, and other qualities. In fact, it is impossible for each breed to maintain such many qualities at a level. In order to maintain these traits of the breed, it is necessary to choose rabbits with different characteristics. For example, one rabbit has a special wool density performance, while the other breed has a special wool quality. Based on them, various crystal lines are established, and future generations can combine the characteristics of these strains through hybridization between strains. Due to the fact that the affinity between different strains of tea is generally far apart, improper inbreeding can also be avoided through the pairing of rabbits between crystal lines. For example, France's Deborah chose gray wild rabbits, Himalayan rabbits, and blue rabbits as luxury boxes and bred them into blue and purple rabbits in 1913, giving their fur a unique blue and purple color, which is highly favored by consumers. Nowadays, this hybridization method has also been used in the cultivation of coarse haired rabbits in China.

久热在线观看视频_欧美一区久久久_免费精品国产的网站免费观看_偷拍亚洲精品
欧美色窝79yyyycom| 成人精品国产一区二区4080| 亚洲视频一区二区在线观看| 国产亚洲综合在线| 久久久久国产精品麻豆ai换脸| 日韩欧美久久久| 2017欧美狠狠色| 中文字幕高清一区| 日韩伦理av电影| 亚洲精品一二三区| 午夜电影久久久| 日本欧美肥老太交大片| 免费成人小视频| 国产精品99精品久久免费| 91在线国产福利| 在线精品视频小说1| 日韩欧美一级特黄在线播放| 久久综合色一综合色88| 中文字幕制服丝袜成人av| 国产精品久久久久久久久动漫 | 高清av一区二区| fc2成人免费人成在线观看播放 | 91精品国产福利在线观看| 欧美tickle裸体挠脚心vk| 国产精品青草久久| 亚洲欧美乱综合| 日本不卡一区二区三区| 国产一区二区三区免费播放| av在线不卡网| 日韩精品在线一区二区| 中文字幕中文字幕在线一区| 天堂蜜桃91精品| 成人av影院在线| 欧美一级高清片| 亚洲图片你懂的| 国产一区二区主播在线| 欧美主播一区二区三区美女| 久久在线免费观看| 亚洲成a人v欧美综合天堂下载| 国产精品中文有码| 7777精品伊人久久久大香线蕉经典版下载 | 日韩高清国产一区在线| 国产成人丝袜美腿| 日韩一区二区在线观看| 亚洲精品日日夜夜| 国产一区二区三区黄视频| 日本高清成人免费播放| 久久久精品免费网站| 性欧美疯狂xxxxbbbb| 国产麻豆91精品| 91麻豆精品国产91久久久久久| 中文字幕一区av| 国内精品国产三级国产a久久| 在线免费观看成人短视频| 国产午夜精品一区二区三区四区| 婷婷综合另类小说色区| 成人av电影免费观看| 精品国产乱码久久久久久浪潮| 亚洲另类一区二区| a在线欧美一区| 国产亚洲欧美激情| 精品影院一区二区久久久| 欧美日本在线观看| 亚洲成人av免费| 91精彩视频在线| 亚洲精品免费在线| 色久综合一二码| 一区二区三区小说| 色婷婷综合久久| 亚洲精品国产第一综合99久久| 99国内精品久久| 亚洲人成7777| 在线视频一区二区三| 亚洲精品视频在线观看网站| 97精品国产露脸对白| 亚洲女同一区二区| 欧美亚洲综合在线| 无码av免费一区二区三区试看| 欧美揉bbbbb揉bbbbb| 婷婷国产在线综合| 制服丝袜在线91| 久久97超碰国产精品超碰| 337p日本欧洲亚洲大胆精品| 国产一区二区三区电影在线观看| 精品国产免费人成电影在线观看四季| 蜜桃一区二区三区在线| 久久久亚洲综合| 国模大尺度一区二区三区| 精品国产电影一区二区| 国产乱一区二区| 亚洲视频在线观看一区| 欧美日韩日本视频| 国产一区二区中文字幕| 亚洲视频一区二区在线观看| 欧美午夜精品一区二区蜜桃| 久久精品国产亚洲aⅴ| 中文在线一区二区| 欧美主播一区二区三区| 捆绑调教美女网站视频一区| 国产女人18毛片水真多成人如厕 | 91麻豆成人久久精品二区三区| 亚洲国产一区视频| 欧美精品一区二区三区蜜桃视频| 成人免费视频一区| 亚洲va中文字幕| 久久在线观看免费| 欧美最新大片在线看| 国产一区二区三区免费播放| 亚洲精品成人天堂一二三| 欧美变态tickle挠乳网站| 91在线精品一区二区三区| 青草av.久久免费一区| 国产精品欧美一级免费| 欧美精品第1页| 99久久国产综合精品麻豆| 午夜精品久久久久久久久久久| 国产日韩精品一区二区三区| 欧美日韩三级在线| 97精品超碰一区二区三区| 日本欧美在线观看| 夜夜精品视频一区二区| 国产精品污www在线观看| 日韩精品一区二区在线| 在线观看视频欧美| 97久久精品人人爽人人爽蜜臀| 精一区二区三区| 午夜视频一区在线观看| 亚洲视频一区在线| 国产欧美精品一区二区三区四区| 欧美日韩亚洲综合在线 欧美亚洲特黄一级 | 亚洲美女在线国产| 国产欧美一区二区在线| 日韩视频一区在线观看| 欧美综合色免费| 97精品超碰一区二区三区| 高清久久久久久| 国产精品456| 国产在线视频精品一区| 日韩高清在线一区| 日韩在线一区二区三区| 亚洲成va人在线观看| 樱花影视一区二区| 亚洲情趣在线观看| 亚洲视频资源在线| 亚洲六月丁香色婷婷综合久久 | 欧美老肥妇做.爰bbww视频| 日本久久电影网| 色香色香欲天天天影视综合网| av中文字幕在线不卡| 成人免费黄色在线| 97久久精品人人做人人爽50路| www.欧美日韩| 色综合久久综合| 精品视频免费看| 欧美日韩一区二区三区不卡| 在线精品国精品国产尤物884a| 欧美综合亚洲图片综合区| 欧美亚洲禁片免费| 欧美精品三级在线观看| 91精品国产色综合久久ai换脸 | 国产一区二区三区美女| 国产精品888| 91麻豆自制传媒国产之光| 91国偷自产一区二区使用方法| 欧美亚一区二区| 日韩一区二区三区精品视频 | 欧美日韩一区二区在线观看 | 国产成人精品免费在线| 99热在这里有精品免费| 色综合久久久久综合体桃花网| 欧美三级视频在线播放| 日韩一二在线观看| 精品sm捆绑视频| 国产精品嫩草影院com| 夜夜揉揉日日人人青青一国产精品| 亚洲444eee在线观看| 国产在线视频一区二区三区| 94-欧美-setu| 欧美一区二区三区的| 欧美激情综合网| 亚洲a一区二区| 国产69精品一区二区亚洲孕妇| 色综合色综合色综合| 欧美一区二区三区免费| 国产精品久久久一区麻豆最新章节| 尤物视频一区二区| 极品销魂美女一区二区三区| 色婷婷综合久久| 精品久久久久久无| 亚洲精品自拍动漫在线| 久久99热国产| 欧美体内she精高潮| 久久久精品影视| 亚欧色一区w666天堂| av资源网一区| 久久综合99re88久久爱| 亚洲成a人片综合在线| 97久久精品人人做人人爽50路| 日韩欧美视频一区| 一区二区三区四区在线免费观看|