发布日期: 2024-03-16 发布人: 紫鸽电气 浏览数: 69
With in-ovo sex identification, men embryos might be detected following excluded off next creativity just before otherwise while in the incubation. Some other sex commitment processes occur you to definitely disagree throughout the level of invasiveness, that will determine hatchability (18, 19) [discover (3), to have remark]. With the day 8 out of incubation, the new egg is permeated by an excellent needle and you may lower amounts away from physical topic is taken away to determine the sex of embryo with the use of a particular biomarker ( A comparable system is revealed by Weismann ainsi que al. (sixteen, 17), where into the-ovo sexing takes place of the examining estrone sulfate on allantoic fluid from the incubated egg (20). Male embryos has actually lower levels out-of estrone sulfate compared to females, and sexing reliability significantly more than 98% might be reached with this approach (16). The technique needs acute the latest egg, which will be a risk for emergency due to infection risks. Which inside-ovo strategy are demonstrated to dump hatching price and you can rearing results out of coating people, that happen to be sampled at the big date 9 off incubation in the place of an unsampled manage class, but zero impact on laying abilities are noted (17).
Another type of method of inside the-ovo sex dedication is via optical imaging procedures (3) such as reflectance (21), infrared (22), and you can Raman spectroscopy (23–26). By acute this new egg with a CO dos laser beam and utilizing spectroscopy on the embryo, the new sex of one’s embryo is computed centered on various other absorption spectra (3). This procedure is shorter intrusive than just deleting physical situation, it however need beginning the eggshell. Fourier alter infrared spectroscopy is achievable inside the non-incubated eggs because it is considering assessing the new blastoderm muscle regarding the germinal disk (22). For those optical imaging ways to evaluate sex, the fresh new eggshell has to be established, that is a risky path as aspect of your hole regarding eggshell minimizes hatching rate (23). From the gap on the eggshell, near-infrared fluorescence is also identify new sex of embryo [to have details, come across (24–26)]. These types of imaging techniques is popular more examining biomarkers regarding allantoic liquid employing reasonable likelihood of contamination, getting get in touch with totally free and you may timely, and certainly will be produced automatic. From the what age away from https://lovingwomen.org/da/filipina-brud/ embryonic invention the new inside ovo procedure is actually used would-be an essential aspect that might help people dictate even though this procedure is chosen as an option to CMC. A low-acute during the-ovo sex character system is thru genetic establishing out of sex chromosomes (27, 28). Cockerels possess a few Z sex chromosomes (we.e., he could be homogametic), whenever you are people get one Z and something W sex chromosome (we.age., he could be heterogametic). Genetically technologies the fresh new lady try analyzed of the Doran mais aussi al. (29) and you will Quansah ainsi que al. (30). They noted the reproduction hens’ Z chromosome with a neon necessary protein. Throughout the germinal disc, sex-specific patterns could be determined to assess sex inside the low-incubated egg (29).
A new replacement for CMC during the hatch is by rearing the male level chicks due to their beef, which in particular training has been chose as a reasonable solution (15, 31). Layer chickens are bred to the production of eggs; for this reason, both sexes are lean, has actually a premier supply consumption, and so are of smaller mature weight compared with broilers especially bred getting higher growth rate and you may muscle (32). Also, the fresh new carcass properties away from coating males can be other than the broiler birds (33). Layer men would-be kept to 18 weeks of age so you can visited a pounds around 2 kg (9). Broiler chickens (person) can also be build in order to dos kilogram when you look at the 33 days and you may grow away to 5 kg within the 70 months according to genotype put (2). Parts of the body including the nipple muscle mass otherwise legs from broilers are used once the meats items, but the chicken regarding level cockerels has to be canned toward other issues, such as for example hamburgers (15). The chicken facts extracted from the coating cockerel try out of less high quality and amounts (34), therefore more costly (we.e., less less expensive), much less renewable weighed against broiler animal meat by large price of eating and construction these types of birds for a bit longer of energy and extra running means. Right now, only a finite level of producers on the Netherlands utilize this avenue almost certainly due to the financial and you will sustainable circumstances.
