{"id":5665,"date":"2020-10-02T07:52:09","date_gmt":"2020-10-02T07:52:09","guid":{"rendered":"http:\/\/www.apytd.com\/?p=5665"},"modified":"2020-10-02T07:52:29","modified_gmt":"2020-10-02T07:52:29","slug":"there-are-many-reasons-for-the-low-fertilization-rate-of-breeders","status":"publish","type":"post","link":"https:\/\/www.apytd.com\/fr\/there-are-many-reasons-for-the-low-fertilization-rate-of-breeders\/","title":{"rendered":"De nombreuses raisons expliquent le faible taux de fertilisation des s\u00e9lectionneurs."},"content":{"rendered":"<p>Dans le processus de production, les agriculteurs pr\u00eatent g\u00e9n\u00e9ralement attention \u00e0 l'immunisation syst\u00e9matique des \u00e9leveurs et \u00e0 la s\u00e9lection des coqs d'\u00e9levage, mais ignorent souvent certains d\u00e9tails du processus d'ins\u00e9mination. En cons\u00e9quence, le taux de fertilisation des s\u00e9lectionneurs est faible alors que tous les indicateurs de test sont qualifi\u00e9s. L'auteur discute du processus de diagnostic en laboratoire, des mesures de traitement et de la pr\u00e9vention du cas<\/p>\n<p>Une ferme de poulets a signal\u00e9 au laboratoire que cinq poulaillers de cette ferme avaient de faibles taux de fertilisation pendant plusieurs mois.<\/p>\n<p>1 sympt\u00f4mes cliniques<\/p>\n<p>Il y a environ 2000 poules dans chaque poulailler, environ 100 coqs, et les m\u00e2les et les poules d'environ 40 semaines, sans sympt\u00f4mes cliniques \u00e9vidents, proc\u00e9dures immunitaires raisonnables, et la production normale d'\u0153ufs.<\/p>\n<p>2 diagnostics de laboratoire<\/p>\n<p>2.1 Diagnostic s\u00e9rologique<\/p>\n<p>Dans cinq poulaillers \u00e0 faible taux de fertilisation, 16 \u00e9chantillons de sang ont \u00e9t\u00e9 pr\u00e9lev\u00e9s dans chaque maison, et un total de 80 \u00e9chantillons de sang ont \u00e9t\u00e9 pr\u00e9lev\u00e9s dans cinq maisons.<\/p>\n<p>2.1.1 Utiliser un test d'inhibition de l'h\u00e9magglutination pour d\u00e9tecter des anticorps tels que ND, H5 et H9. Apr\u00e8s le test, son taux d'anticorps est sup\u00e9rieur \u00e0 7 log2 (5 log2 est qualifi\u00e9).<\/p>\n<p>2.1.2 Utilisation d'un test d'agglutination sur plaque\u00a0: d\u00e9tection de Salmonella. Aucune anomalie de Salmonella n'a \u00e9t\u00e9 trouv\u00e9e apr\u00e8s le test, et toutes \u00e9taient n\u00e9gatives.<\/p>\n<p>Selon les r\u00e9sultats du diagnostic ci-dessus, le niveau d'anticorps des poulets est \u00e9lev\u00e9 et toutes les bact\u00e9ries Salmonella sont n\u00e9gatives, et aucune circonstance suspecte ne se trouve dans les poules.<\/p>\n<p>2.2 Test de sperme<\/p>\n<p>Recueillir au hasard le sperme de 10 coqs de 100 coqs dans chaque poulailler. Au total, 50 \u00e9chantillons de sperme ont \u00e9t\u00e9 pr\u00e9lev\u00e9s dans cinq b\u00e2timents.<\/p>\n<p>2.2.1 Contr\u00f4le de la qualit\u00e9 de l'apparence.<\/p>\n<p>2.2.1.1 Volume d'\u00e9jaculation\u00a0: Utiliser un gobelet gradu\u00e9 de collecte de sperme pour mesurer et recueillir le sperme. Les m\u00e2les s\u00e9lectionn\u00e9s devraient avoir une moyenne de 0.6 \u00e0 0.8 ml.<\/p>\n<p>2.2.1.2 Couleur du sperme\u00a0: Le sperme de coq frais normal est blanc laiteux. Plus la densit\u00e9 de sperme est \u00e9lev\u00e9e, plus le blanc laiteux est \u00e9lev\u00e9, plus la densit\u00e9 de sperme est faible, plus la couleur est claire. Ceux qui sont m\u00e9lang\u00e9s avec du sang sont roses\u00a0; ceux qui sont m\u00e9lang\u00e9s avec des excr\u00e9ments sont jaune-brun\u00a0; ceux qui sont m\u00e9lang\u00e9s avec de l'urate sont de la laine blanche\u00a0; ceux qui sont m\u00e9lang\u00e9s avec du liquide clair sont de l'eau claire\u00a0; ceux qui ont la maladie et aucun sperme sont de l'eau jaune. En bref, toute personne de couleur anormale ne doit pas \u00eatre utilis\u00e9e pour l'ins\u00e9mination.<\/p>\n<p>2.2.1.3 R\u00e9sultats des contr\u00f4les\u00a0:<\/p>\n<p>(1) Volume d'\u00e9jaculation\u00a0: Le volume d'\u00e9jaculation de 50 hommes est normal.<\/p>\n<p>(2) Couleur du sperme\u00a0: 44 \u00e9chantillons \u00e9taient normaux, 6 \u00e9chantillons \u00e9taient de couleur claire, aucune autre anomalie.<\/p>\n<p>2.2.2 Examen microscopique<\/p>\n<p>2.2.2.1 Densit\u00e9 du sperme\u00a0: mettre le microscope dans un incubateur sp\u00e9cial, agrandir environ 400 fois \u00e0 une temp\u00e9rature de 41-42 degr\u00e9s Celsius pour inspection.<\/p>\n<p>2.2.2.2 M\u00e9thode d'estimation de la densit\u00e9\u00a0: m\u00e9langer d'abord le sperme, prendre une lame de verre propre et goutte \u00e0 goutte une goutte de sperme avec une pipette st\u00e9rile \u00e0 une extr\u00e9mit\u00e9, puis ajouter un verre de couverture (ne n\u00e9cessite pas de bulles) et le placer \u00e0 400 fois V\u00e9rifier au microscope (notez que le stade du microscope doit \u00eatre plat). Ajustez le microscope au champ sombre pour l'observation. Selon la densit\u00e9 du sperme dans le champ de vision, il est divis\u00e9 en trois niveaux\u00a0: \u00ab dense \u00bb, \u201cmoyen\u201d et \u00ab diluer \u00bb.<\/p>\n<p>\"Dense\": Cela signifie que sous le microscope, tout le champ de vision est compl\u00e8tement occup\u00e9 par le sperme, et l'espace entre le sperme et le mouvement d'un seul spermatozo\u00efde est presque invisible. Le sperme vigoureux est comme un nuage roulant. \u00c0 l\u2019heure actuelle, la densit\u00e9 de spermatozo\u00efdes par millilitre est sup\u00e9rieure \u00e0 4 milliards.<\/p>\n<p>\"Moyen\" signifie qu'il y a un \u00e9cart \u00e9vident \u00e9gal \u00e0 la longueur d'un sperme entre le sperme dans le champ de vision, et le mouvement d'un seul sperme peut \u00eatre vu. \u00c0 ce moment, la densit\u00e9 de sperme est de 2 \u00e0 4 milliards par millilitre.<\/p>\n<p>\"mince\" fait r\u00e9f\u00e9rence au grand \u00e9cart entre le sperme dans le champ de vision, qui peut accueillir deux spermatozo\u00efdes ou plus, et la densit\u00e9 de sperme est inf\u00e9rieure \u00e0 2 milliards par millilitre. Essayez de ne pas utiliser ce sperme.<\/p>\n<p>2.2.2.3 Motilit\u00e9 des spermatozo\u00efdes<\/p>\n<p>Il existe trois types de mouvement des spermatozo\u00efdes\u00a0: le mouvement lin\u00e9aire, le mouvement de rotation et le swing in situ. L'\u00e9valuation de la motilit\u00e9 des spermatozo\u00efdes est bas\u00e9e sur la proportion de spermatozo\u00efdes se d\u00e9pla\u00e7ant en ligne droite. La motilit\u00e9 du sperme est g\u00e9n\u00e9ralement \u00e9valu\u00e9e par un syst\u00e8me \u00e0 dix niveaux, c'est-\u00e0-dire que 10 spermatozo\u00efdes ont un mouvement lin\u00e9aire comme premier niveau\u00a0; deux mouvements lin\u00e9aires sont le deuxi\u00e8me niveau\u00a0; et ainsi de suite au dixi\u00e8me niveau\u00a0; seul le sperme avec mouvement lin\u00e9aire peut \u00eatre f\u00e9cond\u00e9, mouvement lin\u00e9aire Plus vous en avez, meilleure est votre vitalit\u00e9. G\u00e9n\u00e9ralement, la motilit\u00e9 des spermatozo\u00efdes et la densit\u00e9 du sperme sont v\u00e9rifi\u00e9es en m\u00eame temps. Au cours de l'examen, le mouvement du sperme \u00e9tait ondul\u00e9 ou tumbling comme un nuage, qui est une forte concentration de sperme. Le mouvement circulaire peut \u00eatre caus\u00e9 par un gonflement de la petite t\u00eate\u00a0; la rotation en place et la flexion \u00e0 gauche et \u00e0 droite sont des signes de sperme trop faible\u00a0; le non-mouvement du sperme est un sperme mort\u00a0; l'agglutination du sperme est caus\u00e9e par des excr\u00e9ments contamin\u00e9s.<\/p>\n<p>V\u00e9rifiez la motilit\u00e9 des spermatozo\u00efdes pour faire attention aux points suivants\u00a0:<\/p>\n<p>1) Un jugement correct ne peut \u00eatre fait qu'apr\u00e8s beaucoup d'observation.<\/p>\n<p>2) Lors de la fabrication d'\u00e9chantillons microscopiques, ne pas avoir trop de sperme, il est pr\u00e9f\u00e9rable de couvrir le verre de couverture sans d\u00e9bordement, et il ne devrait pas y avoir de bulles.<\/p>\n<p>3) Il est pr\u00e9f\u00e9rable d'observer dans le champ sombre lors de l'inspection.<\/p>\n<p>4) \u00c0 une temp\u00e9rature de 40-42\u00b0C.<\/p>\n<p>5) V\u00e9rifiez imm\u00e9diatement apr\u00e8s la collecte de sperme.<\/p>\n<p>6) Secouez le tube \u00e0 sperme, et apr\u00e8s avoir m\u00e9lang\u00e9, prenez une autre goutte de sperme et v\u00e9rifiez la temp\u00e9rature.<\/p>\n<p>2.2.2.4 R\u00e9sultats de laboratoire<\/p>","protected":false},"excerpt":{"rendered":"<p>Dans le processus de production, les agriculteurs pr\u00eatent g\u00e9n\u00e9ralement attention \u00e0 l'immunisation syst\u00e9matique des \u00e9leveurs et \u00e0 la s\u00e9lection des coqs d'\u00e9levage, mais ignorent souvent certains d\u00e9tails du processus d'ins\u00e9mination. En cons\u00e9quence, le taux de fertilisation des \u00e9leveurs est faible...<\/p>","protected":false},"author":1,"featured_media":5666,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[19],"tags":[],"post_series":[],"class_list":["post-5665","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","entry","has-media"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>There are many reasons for the low fertilization rate of breeders | Xiangfa<\/title>\n<meta name=\"description\" content=\"In the production process, farmers generally pay attention to the routine immunization of breeders and the selection of breeding roosters, but often\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link 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