Partial dehulling increases the energy content and nutrient digestibility of barley in growing pigs

Wang, Hong Liang; Shi, Meng; Xu, Xiao; Pan, Long; Liu, Ling; Piao, X. S.

doi:10.5713/ajas.16.0429

Cited by 6 publications

(5 citation statements)

References 26 publications

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“…There were no differences in the daily GE intake and the daily loss of GE in feces and urine among pigs fed the three barley grains ( Table 5 ). This is consistent with the results reported by Wang et al [ 21 ] who showed that no differences were found in daily balance of gross energy between two barley cultivars with different fiber content. The DE and ME in Canadian barley were higher (p<0.01) than in French barley and did not differ from the Australian barley.…”

Section: Resultssupporting

confidence: 93%

Comparative energy content and amino acid digestibility of barley obtained from diverse sources fed to growing pigs

Wang

Shi

et al. 2017

Asian-Australas J Anim Sci

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ObjectiveTwo experiments were conducted to determine the content of digestible energy (DE) and metabolizable energy (ME) as well as the apparent ileal digestibility (AID) and standardized ileal digestibility (SID) of crude protein (CP) and amino acids (AA) in barley grains obtained from Australia, France or Canada.MethodsIn Exp. 1, 18 growing barrows (Duroc×Landrace×Yorkshire; 31.5±3.2 kg) were individually placed in stainless-steel metabolism crates (1.4×0.7×0.6 m) and randomly allotted to 1 of 3 test diets. In Exp. 2, eight crossbred pigs (30.9±1.8 kg) were allotted to a replicate 3×4 Youden Square designed experiment with three periods and four diets. Two pigs received each diet during each test period. The diets included one nitrogen-free diet and three test diets.ResultsThe relative amounts of gross energy (GE), CP, and all AA in the Canadian barley were higher than those in Australian and French barley while higher concentrations of neutral detergent fiber, acid detergent fiber, total dietary fiber, insoluble dietary fiber and β-glucan as well as lower concentrations of GE and ether extract were observed in the French barley compared with the other two barley sources. The DE and ME as well as the SID of histidine, isoleucine, leucine and phenylalanine in Canadian barley were higher (p<0.05) than those in French barley but did not differ from Australian barley.ConclusionDifferences in the chemical composition, energy content and the SID and AID of AA were observed among barley sources obtained from three countries. The feeding value of barley from Canada and Australia was superior to barley obtained from France which is important information in developing feeding systems for growing pigs where imported grains are used.

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Section: Resultssupporting

confidence: 93%

Comparative energy content and amino acid digestibility of barley obtained from diverse sources fed to growing pigs

Wang

Shi

et al. 2017

Asian-Australas J Anim Sci

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“…Hvelplund (1985) also reported a lower small intestinal digestibility of RUP in some feedstuffs due to higher proportion of cell wall bound nitrogen content. Another study likewise suggested a negative correlation between the fiber content and nutrient digestibility (Wang et al, 2017).…”

Section: Digestion Of Cp and Aa In The Small Intestinementioning

confidence: 91%

“…Decorticating of grains is a practical tool for increasing the digestible energy content of dairy cow diets without altering the forage-to-concentrate ratios (Yang et al, 1997;Wang et al, 2017). Decortication resulted in the expected changes in composition and in vitro digestibility (Panah et al, 2019).…”

Section: Processing Of Oatmentioning

confidence: 99%

Effects of toasting and decortication of oat on nutrient digestibility in the rumen and small intestine and on amino acid supply in dairy cows

Panah

Lashkari

Hellwing

et al. 2020

Journal of Dairy Science

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This study examined the potential for decorticating and toasting of oat (Avena sativa) to supply crude protein (CP) and amino acids (AA) in dairy cows. Four lactating Danish Holstein Friesian cows fitted with ruminal, duodenal, and ileal cannulas were assigned to a 4 × 4 Latin square design. Cows were fed experimental diets ad libitum based on grass-clover silage and toasted fava beans, with oat included in different forms arranged in a 2 × 2 factorial: whole oat, decorticated oat, toasted oat, and decorticated toasted oat. In situ rumen degradability of processed oat was also evaluated. Decortication increased starch intake by 0.38 kg/d and reduced NDF intake by 0.91 kg/d. Toasting reduced ruminal AA digestibility and increased duodenal flow of CP by 0.41 kg/d. In situ degradation rate and effective degradability of CP in the rumen were reduced by 0.46 h −1 and 310 g/kg CP due to toasting. Both decortication and toasting increased microbial synthesis of CP by 0.20 and 0.41 kg/d, respectively. Decortication and toasting did not affect small intestinal AA digestibility, but did increase the total digested amount of AA by 154 and 250 g/d, respectively. Milk production was not affected by treatments. Methane production (L/d) decreased with decortication and toasting. In conclusion, unless an interaction exists between decortication and toasting, the results indicate additive effects of toasting and decorticating oat for increasing the supply of digestible AA to the small intestine of dairy cows.

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“…Therefore, the application of heat treatment (e.g., roasting) could be a possible way to reduce CP rumen degradation [65]. The husking of cereals is a practical tool to increase the digestible diet energy for dairy cows without altering the forage-concentrate ratio [66]. Table 4 shows oat protein degradability.…”

Section: Oatsmentioning

confidence: 99%

Effect of Cereals and Legumes Processing on In Situ Rumen Protein Degradability: A Review

Iommelli

Zicarelli²,

Musco³

et al. 2022

Fermentation

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The determination of the ruminal degradability rate of feeds, mainly starch and crude protein, is one of the most common methods to evaluate the nutritional value of ruminant feed. The protein requirements for ruminants are met from microbial protein and undegraded dietary protein digested in the small intestine. In order to reach maximum productivity, high-quality proteins are needed, and the requirement for undegraded dietary protein increases with the performance of the animal. This protein can be supplied by reducing the ruminal degradation to increase the amount of protein digested post-rumen, but the form in which a feed is administered influences degradability, and grain processing, especially, is a common practice to improve feed efficiency. Despite these aspects, studies on the effects of feed processing methods on protein degradability are limited, even though more and more ruminants are fed with processed feeds. For these reasons, this review investigated the protein degradability of different processed cereals and legumes in ruminants based on the analysis of available literature in order to take stock of the state of the art on this topic. Results showed that: First, the majority of the papers are focused on the energy aspects mainly due to carbohydrate-rich feeds; second, the majority of the studies in the literature are quite old, probably because the changes occurred in the animal testing legislation that made in vivo studies more and more difficult in the last 20 years; third, as a consequence, the few data available in recent years concern in vitro experiments; fourth, we found a high variability of the experimental conditions thus affecting protein degradability and making it quite difficult to compare the different results.

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Partial dehulling increases the energy content and nutrient digestibility of barley in growing pigs

Cited by 6 publications

References 26 publications

Comparative energy content and amino acid digestibility of barley obtained from diverse sources fed to growing pigs

Comparative energy content and amino acid digestibility of barley obtained from diverse sources fed to growing pigs

Effects of toasting and decortication of oat on nutrient digestibility in the rumen and small intestine and on amino acid supply in dairy cows

Effect of Cereals and Legumes Processing on In Situ Rumen Protein Degradability: A Review

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