Effect of dietary lysine level on lipogenesis in broilers

Grisoni, ML; Uzu, G.; Larbier, M.; Geraert, P. A.

doi:10.1051/rnd:19910608

Cited by 37 publications

(26 citation statements)

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“…Along with our findings, Holsheimer and Ruesink (1993) also observed that incremental levels of lysine, in the starter period, did not significantly affect the abdominal fat percentage. Grisoni et al (1991) used 8 levels of lysine and reported that different levels of lysine had no significant effect on abdominal fat weight. However, increasing dietary lysine level reduced the percentage of abdominal fat relative to body weight and carcass weight.…”

Section: Resultsmentioning

confidence: 99%

Effect of different levels of lysine and threonine on carcass characteristics, intestinal microflora and growth performance of broiler chicks

Kheiri

Alibeyghi

2017

Italian Journal of Animal Science

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The aim of current study was to evaluate the effect of different levels of lysine and threonine on performance, carcass characteristics and intestinal microflora of broiler. Nine hundred and sixty Ross 308 one-day-old female broiler chicks were selected, and they were randomly divided in a factorial design with 12 treatments, four replicates and 20 chicks in each replicate. The tested diets included four levels of lysine (100, 110, 120 and 130%, suggested by NRC) and three levels of threonine (100, 110 and 120%, suggested by NRC). Two phase (starter 0-21d; finisher 22-42 d) feeding schedule was followed. Results showed that of 21 days of age, 120% of lysine and threonine the live and carcass weights and breast, thigh and liver yields in chicks increased (p < .05). At the age of 42 days those treatments which received 120% of threonine gained the highest rate of live and carcass weights and yield of carcass characteristics. The intestinal microflora, in 42 days of age, with the increase in concentration of lysine significantly decreased in the intestinal microflora. The level of threonine in diet, and the interaction between threonine and lysine at 42 days of age effect on intestinal microflora. The best feed conversion ratio was related to 120% lysine. According to the results of this study, the carcass characteristics and growth performance can be improved with increasing in lysine and threonine levels to 120% above from NRC recommendations for commercial broilers. ARTICLE HISTORY

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Section: Resultsmentioning

confidence: 99%

Effect of different levels of lysine and threonine on carcass characteristics, intestinal microflora and growth performance of broiler chicks

Kheiri

Alibeyghi

2017

Italian Journal of Animal Science

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“…The ability of increased dietary lysine to decrease abdominal fat and feed conversion ratio and to increase weight gain and breast meat yield has been reported by Velu et al (1972), Sibbald and Wolynetz (1986), Grisoni et al (1991), Baker (1991), Holsheimer and Veerkamp (1992), and Holsheimer and Ruesink (1993). The influence of lysine on carcass variables has been shown to be dependent on strain cross (Bilgili et al, 1992).…”

Section: Discussionmentioning

confidence: 96%

Lack of Interactions Between Dietary Lysine or Strain Cross and Photoschedule for Male Broiler Performance and Carcass Yield ,

1994

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The purpose of this study was to test interactions of dietary lysine or strain crosses provided increased lysine with photoschedule on broiler performance and carcass quality. In Experiment 1, treatments were factorially arranged as two lysine levels [control grower and finisher (NRC, 1984) or control grower and finisher plus .15% L-lysine HCl] and two photoschedules [23 h light (L):1 h dark (D) or 14L:10D]. All birds received a control starter feed and dietary treatments were initiated at 22 d of age. In Experiment 2, treatments were factorially arranged as two strain crosses [Peterson x Arbor Acres (PAA) or Ross x Ross (RR)] and two photoschedules (23L or 16L). All birds received standard starter and standard grower and finisher plus .15% L-lysine HCl. There were no lysine by photoschedule or strain cross by photoschedule interactions in this study. The high-lysine diet increased BW, improved feed efficiency, increased lean carcass weight and yield of breast meat, and decreased abdominal fat and yield of thighs. The PAA strain cross had better feed conversion, fewer Grade A carcasses, more back bruises and breast blisters, greater yield of wings and drumsticks, and less yield of breast meat than RR. The 23L had greater BW, better feed efficiency, fewer breast blisters, greater carcass weight (Experiment 1), more abdominal fat (Experiment 2), lower yield of wings (Experiment 1), drumsticks, and thighs, and greater yield of breast meat than the treatments with shorter photoschedules. Increased dietary lysine did not compensate for decreased breast meat yield associated with 14L (Experiment 1).

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“…In liver, the primary site for the de novo synthesis of long-chain FAs in birds, the most of the NADPH required for this process is furnished via malic enzyme (Wakil et al, 1983;Volpe and Vagelos, 1973). It is reported that the malic enzyme activity is positively correlated with abdominal fat proportion (Grisoni et al, 1991), Figure 5 Differentially expressed genes in different ages between two chicken lines. A total of 81 genes at 1 week of age, 966 genes at 4 weeks of age and 610 genes at 7 weeks of age were differentially expressed between two lines.…”

Section: Discussionmentioning

confidence: 99%

Microarray analysis of genes differentially expressed in the liver of lean and fat chickens

Wang

Zhang

et al. 2010

Animal

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Excessive accumulation of lipids in the adipose tissue is one of the main problems faced by the broiler industry nowadays. In chicken, lipogenesis occurs essentially in the liver, in which much of the triglycerides that accumulate in avian adipose tissue are synthesized. In order to better understand the gene expression and its regulation in chicken liver, the gene expression profiles of liver at developmental stages of chicken (1 week, 4 weeks and 7 weeks of age) were investigated and differentially expressed genes between lean and fat chicken lines divergently selected for abdominal fat content for eight generations were screened. Our data indicated that 4 weeks of age was a very important stage on chicken liver lipogenesis compared to 1 week and 7 weeks of age, and the glycometabolism in chicken liver could be related to lipid metabolism and the difference of glycometabolism could be another potential reason for the fat and lean phenotype occurrence besides the difference of lipogenesis in chicken liver. Our result have established groundwork for further study of the basic genetic control of chicken obesity and will benefit chicken research communities as well as researches that use chicken as a model organism for developmental biology and human therapeutics.

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Effect of dietary lysine level on lipogenesis in broilers

Cited by 37 publications

References 1 publication

Effect of different levels of lysine and threonine on carcass characteristics, intestinal microflora and growth performance of broiler chicks

Effect of different levels of lysine and threonine on carcass characteristics, intestinal microflora and growth performance of broiler chicks

Lack of Interactions Between Dietary Lysine or Strain Cross and Photoschedule for Male Broiler Performance and Carcass Yield ,

Microarray analysis of genes differentially expressed in the liver of lean and fat chickens

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