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The effect of graded levels of digestible valine : digestible lysine ratio on performance and carcass traits of male broilers fed low crude protein diets

2020.03.16

The effect of graded levels of digestible valine : digestible lysine ratio on performance and carcass traits of male broilers fed low crude protein diets

Source : Schothorst Feed Research

Objective

Determine the optimal d.Val : d.Lys ratio for maximum growth, best feed efficiency, maximum breast meat weight and yield and lowest feed cost in male Cobb broilers from day 0-42 of age 

Materials and Methods

● Experimental animals : 960 Cobb 500 Broilers (8 treatment * 6 replicates * 20 broilers)

● Age at arrival : One-day-old

● Starting date : 26th April, 2017

● Duration of the trial : 42 days

The effect of graded levels of digestible valine

Results

The effect of graded levels of digestible valine 2

Conclusion

Valine has a wide range of physiological functions widely known, and as the importance of its function in foods and in swine feeds is growing, its usage is increasing accordingly. These functions of valine can play a very important role in broiler chickens as well. As mentioned in the text, when the ratio of valine to lysine is 80%, it is possible to maximize the potential productivity of broiler chickens and to help chickens maintain healthy condition. 

In conclusion, for economic and environmental benefits it is very important to accurately evaluate the amount of valine used in the feed and to design a proper ratio.

References

1. Corrent E. and Bartelt J., 2011. Valine and Isoleucine: The nest limiting amino acids in broiler diets. Lohmann Information 46(1): P 59.

2. Corzo A. Kidd M. T. Dozier W. A. III Vieira S. L. 2007. Marginality and needs of dietary valine for broilers fed certain all-vegetable diet. J. Appl. Poult. Res. 16: 546554.

3. Dever T.E. and Hinnebusch A.G., 2005. GCN2 whets the appetite for amino acids. Mol. Cell. 18(2): 141-142.

4. Shimomura Y., Murakami T., and Nakai N. 2004. Exercise promotes BCAA catabolism: Effects of BCAA supplementation on skeletal muscle during exercise. J. Nutr. 134(6): 1583S-15875S.

5. Zhang S, Qiao S, Ren M, Zeng X, Ma X, Wu Z et al. (2013) Supplementation with branched-chain amino acids to a low-protein diet regulates intestinal expression of

amino acid and peptide transporters in weanling pigs. Amino Acids. 45:1191-205
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