Lub cev teebmeem ntawm kev yug me nyuam teeb ntawm broiler thiab pw hens

Nqaij qaib muaj qhov pom tau pom tau zoo heev, tuaj yeem ua kom pom lub teeb pom kev zoo thiab xim. Txoj kev tshawb fawb no tau siv LED teeb, ib qho tib - wavelin teeb pom kev zoo ntawm lawv txoj kev loj hlob, kev loj hlob, thiab kev tsim khoom ntau heev. The results showed that in the early growth phase of broilers exposed to green light, the broiler group gained weight faster but had a lower feed-to-grain ratio. Later in the growth phase, the blue light group gained weight significantly but had a lower feed-to-grain ratio. Tsis tas li ntawd, qhov hnyav carcass, tus ncej puab lub cev, plab hlaub siab, thiab kev txom nyem rau 19,86% siab dua cov uas nyob rau lwm pab pawg. This indicates that, compared with red and white light, green light promotes growth in the early growth phase, while blue light promotes growth in the later growth phase. Tsis tas li ntawd, siv lub teeb ci fluorescent los ua kom pom tseeb cov menyuam ntsuab, nws tau pom nyob hauv qab xiav {13} Lub teeb ntsuab ntsuab tau nce siab dua li cov teeb liab lossis dawb. Cov txiaj ntsig tau qhia tias lub teeb pwm tuaj yeem cuam tshuam rau kev loj hlob thiab kev loj hlob ntawm cov qaib. Cov wavelengths sib txawv ntawm lub teeb tuaj yeem cuam tshuam tus cwj pwm ntawm cov qaib broiler. Piv txwv li, cov zaub mov ci tau tsa hauv lub teeb liab thiab dawb zoo li yog kev ua kom tsis muaj ntsej muag, thaum cov neeg tsa hauv qab xiav thiab lub teeb ntsuab ntau dua. Qhov no yuav piav qhia txog lub cev hnyav dua, ncej puab tes nyhav, nyuj kom hnyav, thiab everidated lub teeb loj nciab rau cov uas tau tsa hauv lub teeb liab thiab dawb.

The spleen is a large immune organ in animals, containing a large number of lymphocytes and macrophages, and serves as the center of both cellular and humoral immunity. Cellular immunity thickens the periarterial lymphoid sheaths, while humoral immunity results in lymphoid nodules proliferation and a significant increase in plasma cells and macrophages within the splenic cords. Therefore, using HE histological and immunohistochemical staining, we investigated the morphological changes in the spleen and the differences in splenocyte proliferation in laying hens raised under different monochromatic light environments, providing fundamental data for lighting in the poultry industry. The results showed that the diameter of the splenic corpuscles in the red light group increased with age from 20 to 37 weeks, with no significant change from 37 to 52 weeks (P>0.05). Txawm hais tias thaj tsam ntawm Lymphoid Sheath nyob ib ncig ntawm cov kab mob sib cais poob qis ntawm 37 lub lis piam, nws tau rov qab ntawm 52 lub lis piam. Cov txiaj ntsig no qhia tau tias lub teeb liab kis tuaj yeem txhim kho lub cev tiv thaiv kab mob ntawm splenocytes nyob rau hauv kev tso hens thaum lub qe qe lig}} tso sij hawm.