![]() All birds were monitored twice daily for overt signs of PHS and mortality were recorded. At termination of the study (d40 & 41), slaughter performance traits were determined on two birds per replicate. Animal performance was determined at weekly intervals. All birds were fed basal diet consistinf of maize-soybean meal. ![]() The experiment was divided into three phases: a starter phase (1-14 d), a grower phase (15-28 d) and a finisher phase (29-40 d). concentrations higher than recommended levels. Both DMG and TMG were fed at 100 % methyl group donors, i.e. The treatment diets comprised of the following: a negative control group (NC basal diet which was low in supplemental methionine (0.16 % methionine) and no additional choline chloride a betaine group (NC + Betaine, where 1.042 g/kg of pure betaine (100 %) was added to the basal diet) a DMG group (NC + DMG, where equal molar equivalents of DMG (1.380 g/kg) was added to the basal diet) a positive control (PC) group (basal diet which contained additional levels of DL-methionine (0.21 % methionine) and additional choline chloride (250mg/kg)). Birds were allocated to treatments based on a factorial arrangement comprising of two sexes and four dietary treatment groups of which each group had 12 replicate pens with 17 birds each. females) broiler chicks were distributed equally amongst 96 pens. A total of 1,632-day-old separate sex (males vs. These AIC included high (>38.8☌) eggshell temperatures during mid-late incubation (Embryonic Day 11 (ED11) to Embryonic Day 18 (ED18)) and cold temperatures during brooding which increases the bird?s relative oxygen requirements and basal metabolic rate, as a means to incite pulmonary hypertension syndrome (PHS). The present trial aimed to evaluate the effects of these different methylamines on production and slaughter performance and ascites-relates traits in broilers, and to assess oxidative stress in broilers with ascites.Ī challenge study was conducted where broilers were subjected to ascites-inducing conditions (AIC) from embryonic stage until 40 days of age. Recently, DMG has been supplemented to broiler chicken diets as a means to alleviate pulmonary hypertension syndrome (PHS or ascites) in rapidly growing broiler chickens. DMG possess non-enzymatic anti-oxidant properties and have been implicated in enhanced oxygen utilisation while TMG posses osmolytic, methyl-donating, lipolytic and also potentially anti-oxidant-like properties. ![]() Both N, N-dimethylglycine (DMG) and trimethylglycine (Betaine TMG) are intermediary metabolites in the pathway of choline-to-glycine metabolism. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |