Sustaining live performance in broilers offered reduced crude protein diets based on corn and wheat blend

2021 ◽  
pp. 114928
Author(s):  
C.W. Maynard ◽  
A. Ghane ◽  
P.V. Chrystal ◽  
P.H. Selle ◽  
S.Y. Liu
Keyword(s):  
Crude Protein ◽  
Live Performance ◽  
Reduced Crude Protein ◽  
Protein Diets

The effects of diets with reduced crude protein and digestible energy content on the performance of growing and finishing pigs and the characteristics of slurry produced

1999 ◽  
Vol 1999 ◽  
pp. 24-24
Author(s):  
P A Lee ◽  
A Armsby
Keyword(s):  
Crude Protein ◽  
Energy Content ◽  
Nutrient Balance ◽  
Carcass Characteristics ◽  
Finishing Pigs ◽  
N Retention ◽  
Digestible Energy ◽  
Reduced Crude Protein ◽  
Sparing Effect ◽  
Protein Diets

Formulating diets to match more closely the requirements of the pig for amino acids results in diets which are lower in crude protein (CP) than conventional commercial diets. The lower intake of nitrogen (N) which is concomitant with these diets results on lower N excretion. The excretion of excess N requires energy and previous nutrient balance work undertaken at Terrington (Lee and Kay, 1998) indicated that the ‘energy sparing’ effect of the reduced crude protein diets can be utilised by reducing the digestible energy (DE) content of reduced CP diets whilst at the same time maintaining the level of N retention. The objective of this work was to determine the performance carcass characteristics and slurry characteristics of growing/finishing pigs given reduced CP/DE diets.

Impact of feeding reduced crude protein diets to lactating sows on nitrogen utilization1

2015 ◽  
Vol 93 (11) ◽  
pp. 5254-5264 ◽  
Author(s):  
L. Huber ◽  
C. F. M. de Lange ◽  
U. Krogh ◽  
D. Chamberlin ◽  
N. L. Trottier
Keyword(s):  
Crude Protein ◽  
Lactating Sows ◽  
Reduced Crude Protein ◽  
Protein Diets

scholarly journals Impacts of reduced-crude protein diets on key parameters in male broiler chickens offered maize-based diets

2020 ◽  
Vol 99 (1) ◽  
pp. 505-516 ◽  
Author(s):  
Peter V. Chrystal ◽  
Amy F. Moss ◽  
Ali Khoddami ◽  
Victor D Naranjo ◽  
Peter H. Selle ◽  
...  
Keyword(s):  
Broiler Chickens ◽  
Crude Protein ◽  
Reduced Crude Protein ◽  
Protein Diets

scholarly journals Synthetic and Crystalline Amino Acids: Alternatives to Soybean Meal in Chicken-Meat Production

Animals ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 729 ◽  
Author(s):  
Peter H. Selle ◽  
Juliano Cesar de Paula Dorigam ◽  
Andreas Lemme ◽  
Peter V. Chrystal ◽  
Sonia Y. Liu
Keyword(s):  
Amino Acids ◽  
Soybean Meal ◽  
Broiler Chickens ◽  
Crude Protein ◽  
Chicken Meat ◽  
Meat Production ◽  
Dietary Crude Protein ◽  
Reduced Crude Protein ◽  
Crystalline Amino Acids ◽  
Protein Diets

: This review explores the premise that non-bound (synthetic and crystalline) amino acids are alternatives to soybean meal, the dominant source of protein, in diets for broiler chickens. Non-bound essential and non-essential amino acids can partially replace soybean meal so that requirements are still met but dietary crude protein levels are reduced. This review considers the production of non-bound amino acids, soybeans, and soybean meal and discusses the concept of reduced-crude protein diets. There is a focus on specific amino acids, including glycine, serine, threonine, and branched-chain amino acids, because they may be pivotal to the successful development of reduced-crude protein diets. Presently, moderate dietary crude protein reductions of approximately 30 g/kg are feasible, but more radical reductions compromise broiler performance. In theory, an ‘ideal’ amino acid profile would prevent this, but this is not necessarily the case in practice. The dependence of the chicken-meat industry on soybean meal will be halved if crude protein reductions in the order of 50 g/kg are attained without compromising the growth performance of broiler chickens. In this event, synthetic and crystalline, or non-bound, amino acids will become viable alternatives to soybean meal in chicken-meat production.

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