Effect of acetylated soyabean peptides on rumen
fermentation and nitrogen metabolism in sheep

Cao, Zhen-Zhen; Li, S L; Wang, Y J; Ma, M; Chen, P

doi:10.22358/jafs/74476/2007

Cited by 2 publications

(2 citation statements)

References 6 publications

(8 reference statements)

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“…Zhang et al 29 found that small peptides had a positive effect on nitrogen retention and the use of protein in goats. In addition, Cao et al 30 reported that, despite digesting greater amounts of nitrogen than those fed SBM, soybean peptide-fed sheep had smaller losses of nitrogen from the feces and urine. However, Wang et al 31 demonstrated a decrease in NDF and ADF digestibility due to infusion of soybean small peptides.…”

Section: Discussionmentioning

confidence: 99%

Fermented soybean meal affects the ruminal fermentation and the abundance of selected bacterial species in Holstein calves: a multilevel analysis

Feizi

Zad

Jalali

et al. 2020

Sci Rep

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The effect of soybean meal (SBM) replacement with fermented SBM (FSBM) on ruminal fermentation and bacterial abundance in Holstein calves was investigated in this study. Thirty nine calves were randomized to: (1) control: 27% SBM + 0% FSBM (FSBM0, n = 13); (2) 18% SBM + 9% FSBM (FSBM9, n = 13); and (3) 13.5% SBM + 13.5% FSBM (FSBM13, n = 13). SBM contained a greater amount of large peptides containing 3 to 10 amino acids (AAs), while FSBM had a greater amount of ammonia nitrogen (NH 3-N), free AAs, and small peptides containing 2 to 3 AAs. The calves fed FSBM13 had the lowest acetic acid, NH 3-N, and the ratio of acetate to propionate, with the greatest concentration of caproic acid, valeric acid and isovaleric acid in ruminal fluid. Compared to those fed FSBM9 or FSBM13, the calves fed FSBM0 had the greatest proportion of Butyrivibrio fibrisolvens and Ruminococcus albus in rumen fluid. However, the ruminal abundance of Prevotella ruminicola in calves fed FSBM13 was greater than in calves fed FSBM0. Network analysis showed that the abundance of the Ruminococcus albus was associated with large peptides, and butyric acid was correlated with small peptide. Taken together, our findings suggest that FSBM may have the potential to boost calf performance by changing the fermentation products and the relative abundance of some members of the bacterial community in the rumen. The calf starts its life with a physically and metabolically undeveloped rumen. Calves generally experience significant changes not only in the development of their rumen, but also in the rumen bacterial composition and community 1. This, in turn, enables calves to digest dry feeds for their growth needs, impacting productivity and future milk production capacity 1,2. Fibrolytic bacteria are important for the rapid anatomical and physiological growth of rumen, as the newborn calf moves from a liquid diet (i.e., milk) to a solid diet, such as grass and hay 3. Rumen microbes are classified into various functional groups, for example cellulolytic, amylolytic and proteolytic bacteria species 4. These organisms metabolize feed components and other microbial products 5. The rumen microbial community and the functional development of the stomach are affected by diets 4. For example, when forages are fed to ruminants, Bacteroidales and Ruminococcaceae become dominant 4. On the other hand, it is known that animals fed high-concentrate diets have more Prevotella and Succinivibrionaceae in their rumen fluid 4,6-8. Therefore, diets fed to animals can alter the relative abundance of bacteria and the profile of volatile fatty acids (VFAs) in the rumen 1,4. This, in turn, affects the evolution of the early ruminal development and microbiota 9 .

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Section: Discussionmentioning

confidence: 99%

Fermented soybean meal affects the ruminal fermentation and the abundance of selected bacterial species in Holstein calves: a multilevel analysis

Feizi

Zad

Jalali

et al. 2020

Sci Rep

View full text Add to dashboard Cite

show abstract

“…The birds were fed a low-nitrogen diet and nitrogen-free diet for one week in trial 2, while they were fed a basal diet and nitrogen-free diet for one week in trial 3. The nitrogen-free diet and low-nitrogen diet (Table S2) were formulated as in previous studies [12,24]. The first three days were the pre-test period and the last four days were the main test period.…”

Section: Birds Diets and Sample Collectionmentioning

confidence: 99%

Estimation of Protein and Amino Acid Requirements in Layer Chicks Depending on Dynamic Model

Liu,

Xia,

et al. 2024

Animals

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Four trials were conducted to establish a protein and amino acid requirement model for layer chicks over 0–6 weeks by using the analytical factorization method. In trial 1, a total of 90 one-day-old Jing Tint 6 chicks with similar body weight were selected to determine the growth curve, carcass and feather protein deposition, and amino acid patterns of carcass and feather proteins. In trials 2 and 3, 24 seven-day-old and 24 thirty-five-day-old Jing Tint 6 chicks were selected to determine the protein maintenance requirements, amino acid pattern, and net protein utilization rate. In trial 4, 24 ten-day-old and 24 thirty-eight-day-old Jing Tint 6 chicks were selected to determine the standard terminal ileal digestibility of amino acids. The chicks were fed either a corn–soybean basal diet, a low nitrogen diet, or a nitrogen-free diet throughout the different trials. The Gompertz equation showed that there is a functional relationship between body weight and age, described as BWt(g) = 2669.317 × exp(−4.337 × exp(−0.019t)). Integration of the test results gave a comprehensive dynamic model equation that could accurately calculate the weekly protein and amino acid requirements of the layer chicks. By applying the model, it was found that the protein requirements for Jing Tint 6 chicks during the 6-week period were 21.15, 20.54, 18.26, 18.77, 17.79, and 16.51, respectively. The model-predicted amino acid requirements for Jing Tint 6 chicks during the 6-week period were as follows: Aspartic acid (0.992–1.284), Threonine (0.601–0.750), Serine (0.984–1.542), Glutamic acid (1.661–1.925), Glycine (0.992–1.227), Alanine (0.909–0.961), Valine (0.773–1.121), Cystine (0.843–1.347), Methionine (0.210–0.267), Isoleucine (0.590–0.715), Leucine (0.977–1.208), Tyrosine (0.362–0.504), Phenylalanine (0.584–0.786), Histidine (0.169–0.250), Lysine (0.3999–0.500), Arginine (0.824–1.147), Proline (1.114–1.684), and Tryptophan (0.063–0.098). In conclusion, this study constructed a dynamic model for the protein and amino acid requirements of Jing Tint 6 chicks during the brooding period, providing an important insight to improve precise feeding for layer chicks through this dynamic model calculation.

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Effect of acetylated soyabean peptides on rumen fermentation and nitrogen metabolism in sheep

Cited by 2 publications

References 6 publications

Fermented soybean meal affects the ruminal fermentation and the abundance of selected bacterial species in Holstein calves: a multilevel analysis

Fermented soybean meal affects the ruminal fermentation and the abundance of selected bacterial species in Holstein calves: a multilevel analysis

Estimation of Protein and Amino Acid Requirements in Layer Chicks Depending on Dynamic Model

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