Sources of Betaine as Methyl Group Donors in Broiler Diets
نویسندگان
چکیده مقاله:
Betaine is donor of methyl groups and can partially replace methionine in diets for this purpose. The objective of this study was to evaluate three sources of betaine in partial substitution of methionine supplement in broiler diets. The Cobb-500 broiler chickens were allocated in a completely randomized experimental design with 5 treatments and 7 replicates of 49 birds each. The positive control treatment consisted of standard level of digestible methionine, the negative control was the digestible methionine reduced by 17% and the other three treatments consisted of the negative control diet supplemented with natural betaine (95%) or hydrochloride betaine (72%), HCl 1 and HCl 2 that had the same composition, and were obtained from two different manufacturers. The performance was evaluated from 7 to 21 days, 7 to 35 days and 7 to 43 days. At 43 days, the carcass and carcass parts (breast, thigh+drumstick, liver and abdominal fat) were determined and an economic analysis of each diet was performed. The performance results of the negative control were similar to the other treatments; however, there was a reduction in breast meat yield of birds fed the negative control compared to positive control and betaine HCl 2. The birds from the negative control had the lowest breast meat yield and the highest thigh + drumstick yield. The chickens fed betaine HCl 2 had greater amount of breast in the carcass (42.85 vs. 41.17%) and the cost of production of breast was reduced (US$1.941 vs. US$ 2.042) compared to the negative control. There was not difference between treatments in carcass yield, percentage of liver and abdominal fat. There was a tendency to higher abdominal fat deposition in carcass in animals fed with the negative control. As a conclusion, the inclusion of betaine in the diets of chickens containing restricted levels of methionine is economically feasible, reducing the cost of breast meat production.
منابع مشابه
Poultry No. 1573 The replacement value of betaine for DL-methionine and Choline in broiler diets
Especially in times of high raw material prices as a result of limited availability of feed ingredients nutritionist look for ways to keep feed cost as low as possible. Part of this discussion is whether certain ingredients can be replaced by others while avoiding impairments of performance. This discussion sometimes includes the question whether supplemental methionine can be replaced by betai...
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متن کاملByerrum Et Al-betaine as a Methyl Donor
methvlation can occur. It was found that after feeding choline-methyl-C14 to plants, radioactive betaine and dimethylglycine had been produced. Choline could give rise to betaine either by transferring its methyl groups to glycine, or some methylated glycine, to yield betaine, or oxidation of choline to betaine could occur. The experiments of Cromwell and Rennie (5) and of Bregoff and Delwiche ...
متن کاملfaculty of psychology and social sciences group of anthropology master thesis in major of anthropology
چکیده پایان نامه (شامل خلاصه، اهداف، روش های اجرا و نتایج به دست آمده): کار جمع آوری گو یش های محلی در سال های اخیر شتاب امیدوار کننده ای به خود گرفته است. شاید از بارزترین اهداف جمع آوری گویش های مختلف، ثبت و ضبط آن، جلوگیری از نابودی و مهمتر از همه حل مشکلات دستوری زبان رسمی باشد. دقت در فرآیند های زبانی گویش های محلی نوع ارتباط مردم نواحی مختلف با پیرامون نشان را به ما نشان خواهد داد. از س...
Betaine as a methyl donor and an antioxidant agent in levodopa-induced hyperhomocysteinemia and oxidative stress in rat's kidney
BACKGROUND: Betaine has been shown to be antioxidantand methyl donor effects in our recent studies. OBJECTIVES: Inthe present study, the antioxidant and methyl donor properties ofbetaine in levodopa/benserazide-mediated hyperhomocysteinemiaand levodopa-induced oxidative stress in rat's kidney wereexamined. METHODS: Sprague-Dawley male rats were dividedinto levodopa (LD), Betaine (Bet.), levodop...
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عنوان ژورنال
دوره 8 شماره 2
صفحات 325- 332
تاریخ انتشار 2018-06-01
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