Developing model equation to subdivide methionine + cystine requirements into requirement for growth and maintenance in pigs
نویسندگان
چکیده
منابع مشابه
Methionine Requirement and Commercial Methionine Sources in Growing Pigs
Methionine is a limiting amino acid in commercial swine diets and commonly supplemented as dry DL-methionine (DL-Met, 99%) or as liquid DL-methionine hydroxy analogue-free acid (liquid MHA-FA, containing 88% of active substance). New and intriguing research has been published in poultry and swine as to what is the nutritional effectiveness of liquid MHA-FA relative to DLMet, and what are the re...
متن کاملLysine requirement for maintenance in growing pigs
Probably due to methodological problems the knowledge about the AA requirement for maintenance in pigs is rather scarce. In the present study an alternative experimental approach was applied and its underlying hypothesis was tested, whether protein retention decreases with body weight (BW), when daily lysine intake remains constant and acts as the limiting factor for protein retention, and whet...
متن کاملGrowth and Lipotropism I. the Dietary Requirements of Methionine, Cystine, and Choline by C. R. Treadwell*
Since the reviews by McHenry and Patterson (1) and Best and Lucas (2) on the relationships of lipotropic substances to fat metabolism, several publications have appeared which indicate progress in clarifying the somewhat conflicting views regarding the influence of amino acids and proteins on the fat content of the liver. Beveridge and coworkers (3) have shown that certain essential amino acids...
متن کاملMaintenance requirements for methionine and cysteine, and threonine for poultry
________________________________________________________________________________ Abstract This study aimed to estimate the methionine & cystine (M&C), and threonine (THR) requirements for maintenance of adult roosters differing in liveweight and body composition, and to estimate the concentrations of M&C and threonine in ‘ideal’ protein for maintenance. Five metabolism trials were conducted usi...
متن کاملThe Optimum Methionine to Methionine Plus Cystine Ratio for Growing Pigs Determined Using Plasma Urea Nitrogen and Nitrogen Balance
The objective of this study was to determine the optimum ratio of methionine to methionine plus cystine for growing pigs. A nitrogen balance trial was conducted using a total of 21 barrows (Large White×Landrace) over two replicates. The initial body weight was 20.36±1.22 kg (mean±SD) in the first replicate and 23.54±1.02 kg (mean±SD) in the second. For each replicate, the 21 pigs were randomly ...
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ژورنال
عنوان ژورنال: Asian-Australasian Journal of Animal Sciences
سال: 1997
ISSN: 1011-2367,1976-5517
DOI: 10.5713/ajas.1997.86