Strengthen selection and selection of ram selection: Select breeding rams from the ewes with high reproductive rates. Body shape is required to be standard, robust, testicles are well developed, male characteristics are obvious, and rams that do not meet the requirements are found and removed through semen quality checks, descendant identification, and other measures. Ewe selection: Select excellent individuals from multiple litter ewes and pay attention to their lactation and lactation performance, and select multiple ewes based on the pedigree. The use of multiple fetuses to introduce multiple breeds and cross them with local breeds is the fastest, most effective and easiest way to increase the reproductive rate of mutton sheep. Reproductive Technology Controls Estrus Control: I. Early weaning of lambs is beneficial to the implementation of two-year-old technology. Second, hormone treatment. The lambs were first weaned and then treated with progesterone for about 10 days. After cessation of treatment, gonadotropin (RMSG) was injected to induce estrus and ovulation. Third, the use of prostate hormone law. A few days after the end of estrus in the ewes, intrauterine infusion or intramuscular injection of prostaglandins is performed. The ewe will be in estrus 2 to 3 days after treatment. Induced twin births, multiple births: First, supplemental aphrodisiac method. Supplementing one month before mating, enhance physical fitness and promote estrus. Second, use double lamb or double placenta. Aqueous preparations were injected subcutaneously in the neck 5 and 2 weeks before ewes were mated, 1 ml each; oil preparations were injected intramuscularly once every 2 weeks before ewes were mated, each with 2 ml. Artificial insemination: The use of advanced insemination techniques to increase the conception rate.
KN95 Face Masks With Valve For Adult
Product Dimesnion: 6.18" x 4.13" /15.70cmx10.50cm
Mask Fabric Material: 5-ply material,100% polypropelyne
Ear Loop Material: 70% polyamide, 30% elastane
when to use: suitable for adults to use daily in a variety of settings such as home, outdoors and work
packaging: 5 pcs of mask in one sealed printed plastic bag to ensure hygiene or 10pcs per box
certification/standard: GB2626-2006(China KN95 standard) and FDA registered
about the manufacturer: Kapanou is china-based healthcare company
KN95 mask with vent valve;pm2.5 KN95 dust mask with valve;KN95 mask with valve ok
Ningbo Debeida Science&Technology Co.,ltd. , https://www.dbdmask.com