Effects of amino acids supplementation in low crude protein diets on growth performance, carcass traits and serum parameters in finishing gilts

Jiao, Xiaohong; Ma, Wenfeng; Chen, Yanrong; Li, Zhentian

doi:10.1111/asj.12542

Cited by 14 publications

(12 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…No significant effects of dietary protein levels and amino acid balance patterns on carcass characteristics were observed (Table 4). The similar result was also reported in Jiao et al [34]. Thus, different amino acids supplementation in low protein diets had no significant effects on carcass characteristics.…”

Section: Resultssupporting

confidence: 90%

Effect of different dietary protein levels and amino acids supplementation patterns on growth performance, carcass characteristics and nitrogen excretion in growing-finishing pigs

Zhao

Tian

Chen

et al. 2019

J Animal Sci Biotechnol

View full text Add to dashboard Cite

Background This study was conducted to determine the effects of different dietary protein levels and amino acids supplementation patterns in low protein diets on the growth performance, carcass characteristics and nitrogen excretion in growing-finishing pigs. Forty-two barrows (25.00 ± 0.39 kg) were randomly assigned to 7 diets. Diet 1: the high crude protein diet with balanced for 10 essential amino acids (EAAs). Diet 2: the medium crude protein diet with 2% (approx) decreased protein level of Diet 1 and balanced 10 EAAs. Diet 3: the low crude protein diet with 4% decreased protein level of Diet 1 and balanced 10 EAAs. The protein levels of Diet 4, 5, 6 and 7 were the same as that of Diet 3. Diet 4 was only balanced for lysine (Lys), methionine (Met), threonine (Thr) and tryptophan (Trp); Diet 5 and 6 were further supplemented with extra isoleucine (Ile) or valine (Val), respectively; Diet 7 was further supplemented with extra Ile + Val. Results Over the 112 days trial, the reduction of dietary protein by 2% or 4% with balanced10 EAAs significantly decreased nitrogen excretion (P < 0.05), but had no effects on growth performance and carcass characteristics (P > 0.05). In low protein diet, Val supplementation significantly increased body weight gain at 25–50 kg phase (P < 0.05), while Ile supplementation at 75–100 kg phase and 100–125 kg phase significantly reduced the ratio of feed to gain (P < 0.05). No effect of different dietary protein levels and amino acids supplementation patterns in low protein diets on carcass characteristics was observed (P > 0.05). The total N excretion of pigs supplemented with only Lys, Met, Thr and Trp was numerically higher than that of pigs fed with extra Ile, or Val, or Ile + Val diets. Conclusion In low protein diet, Val is more required than Ile in the early growing phage (25–50 kg), while Ile becomes more required in the late growing and finishing phage (75–125 kg).

show abstract

Section: Resultssupporting

confidence: 90%

Effect of different dietary protein levels and amino acids supplementation patterns on growth performance, carcass characteristics and nitrogen excretion in growing-finishing pigs

Zhao

Tian

Chen

et al. 2019

J Animal Sci Biotechnol

View full text Add to dashboard Cite

show abstract

“…With the development of industrial synthetic AA technology, supplementary feed grade AA, such as L-valine and L-isoleucine have become available for use in livestock diets, resulting in the potential for further reduction in dietary CP (Wang et al, 2018). According to the results of the Jiao et al (2016), crystalline amino acids supplementation allows the reduction of dietary CP levels by 3 to 4 percentage units with no effects on carcass traits for finishing gilts. The results of Peng et al (2016) indicate that reducing dietary CP level from 20% to 15.30%, supplemented with indispensable AA, had no significant effect on growth performance and had a limited effect on immunological parameters.…”

Section: Resultsmentioning

confidence: 99%

Effects of low protein diets with amino acids supplementation on biochemical and faeces parameters in weaned piglets

Bujňák

Bindas

Maskaľová

et al. 2019

Acta fytotechn zootechn

View full text Add to dashboard Cite

“…In contrast, Qin et al (2015), Jiao et al (2016) and Peng et al (2016) reported that these growth variables were unaffected when CP content was reduced, but the requirement for the more limiting AA (Lys, Met, Trp, Thr) must be reached in the diet. The use of lower levels of AA in our experiment with a performance similar to that of the control protein diet, leads us to determine that a,b,c,d Means with different superscript differ (P≤0.05).…”

Section: Low-protein Dietsmentioning

confidence: 87%

“…The use of low-protein diets (LPD) in fattening pigs is a viable option for reducing nitrogen emission into the environment, which reduces the amount of greenhouse gases and soil contamination (Osada et al 2011). In addition, LPD enable to obtain a similar growth performance compared to standard diets when supplemented with crystalline AA (He et al 2016, Jiao et al 2016, Peng et al 2016. However, the reduction of more than 4-6% of crude protein (CP) in the diet affects growth performance and digestive enzymatic production (He et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of reduced amino acids diets added with protected protease on productive performance in 25-100 kg barrows

Figueroa

Martinez

Sánchez-Torres

et al. 2019

Austral j. vet. sci.

View full text Add to dashboard Cite

The objective of this research was to evaluate the effect of adding protected protease to low-amino acids (AA) diets on the growth performance of barrows. Three decreasing levels of AA (protein levels), with or without the addition of protease were fed to 48 hybrid barrows (27.42±3.48 kg initial body weight). The experimental design was a completely randomised with a factorial arrangement of treatments. An analysis of variance was performed with GLM of SAS and the means comparison was performed with Tukey test (P≤0.05). The productive performance was not affected by addition of proteases in the diet at the three stages (P>0.05). Only in growing barrows, the interaction of standard protein diet and protease reduced backfat thickness (P≤0.05). Protein level in finishing I barrows did not affect (P>0.05) growth performance variables. Low-protein diets increased (P≤0.05) average daily gain, final body weight and fat-free lean gain in growing and finishing II barrows. Concentration of urea in plasma decreased with the reduction of CP and increased with the addition of protease (P≤0.05) at the three stages. In conclusion, low protein diets improved or maintained growth performance variables and reduced the plasma urea nitrogen, whereas supplementation with protease did not show any effect on productive performance.

show abstract

Effects of amino acids supplementation in low crude protein diets on growth performance, carcass traits and serum parameters in finishing gilts

Cited by 14 publications

References 28 publications

Effect of different dietary protein levels and amino acids supplementation patterns on growth performance, carcass characteristics and nitrogen excretion in growing-finishing pigs

Effect of different dietary protein levels and amino acids supplementation patterns on growth performance, carcass characteristics and nitrogen excretion in growing-finishing pigs

Effects of low protein diets with amino acids supplementation on biochemical and faeces parameters in weaned piglets

Evaluation of reduced amino acids diets added with protected protease on productive performance in 25-100 kg barrows

Contact Info

Product

Resources

About