Enteric methane emissions, energy partitioning, and energetic efficiency of zebu beef cattle fed total mixed ration silage

Subepang, Sayan; Suzuki, Tomoyuki; Phonbumrung, Thamrongsak; Sommart, Kritapon

doi:10.5713/ajas.18.0433

Cited by 21 publications

(38 citation statements)

References 16 publications

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“…Fermented total mixed ration feeding technology combines the benefits of a nutrient-balanced diet of high-moisture agro-industrial by-products and homogeneous silage feed. In this process, high-moisture feeds such as cassava pulp, brewer's grains, soybean curd residue, and vegetable residues are blended with dry feeds such as rice straw, rice bran, and oilseed cake [1][2][3]. Ensiled total mixed rations have superior storage life [1][2][3], aerobic stability [2,4], feed intake, and digestibility [5].…”

Section: Introductionmentioning

confidence: 99%

“…In this process, high-moisture feeds such as cassava pulp, brewer’s grains, soybean curd residue, and vegetable residues are blended with dry feeds such as rice straw, rice bran, and oilseed cake [ 1 – 3 ]. Ensiled total mixed rations have superior storage life [ 1 – 3 ], aerobic stability [ 2 , 4 ], feed intake, and digestibility [ 5 ]. They enhance rumen fermentation characteristics, mitigate enteric methane [ 1 ], and improve growth performance [ 3 , 6 ], and the fatty acid composition of intramuscular fat (marbling) in beef cattle [ 7 ].…”

Section: Introductionmentioning

confidence: 99%

“…Ensiled total mixed rations have superior storage life [ 1 – 3 ], aerobic stability [ 2 , 4 ], feed intake, and digestibility [ 5 ]. They enhance rumen fermentation characteristics, mitigate enteric methane [ 1 ], and improve growth performance [ 3 , 6 ], and the fatty acid composition of intramuscular fat (marbling) in beef cattle [ 7 ]. However, little research has been conducted to determine the effects of fermented total mixed ration feeding systems on the growth performance and carcass quality of beef cattle commercially fattened on this diet.…”

Section: Introductionmentioning

confidence: 99%

“…Low feed quality has a negative impact on feed intake, digestion, and energy supply in fattened beef cattle. Consequently, it limits productivity and environmental sustainability [ 3 , 8 , 9 ]. Recent reports suggest that increases in the energy content of total mixed rations improve digestibility and growth performance in Brahmans, native Thai breeds, and Zebus crossbred with European beef cattle breeds [ 3 , 6 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

“…The resultant improvement in energy efficiency increases the ratio of energy intake to energy expenditure in the form of enteric methane emissions. Augmented energy retention in tropical beef cattle feeding systems was recentlyA c c e p t e d A r t i c l e demonstrated[3,8]. Previous studies have reported relatively greater feed intake, digestibility, and nutrient availability in ruminants maintained on fermented total mixed rations than those administered non-fermented total mixed rations [5,7].Fermented total mixed ration feeding technology has improved the nutrient balance, storage, and aerobic stability of agro-industrial by-products with a high moisture content.…”

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confidence: 99%

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Broken rice in a fermented total mixed ration improves carcass and marbling quality in fattened beef cattle

Kotupan

Sommart

2021

Anim Biosci

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Broken rice in a fermented total mixed ration improves carcass and marbling quality in fattened beef cattle ABSTRACT Objective: This study aimed to determine the effects of replacing cassava chips with broken rice in a fermented total mixed ration diet on silage quality, feed intake, ruminal fermentation, growth performance, and carcass characteristics in the final phase of fattening beef cattle. Methods: Eighteen Charolais-Thai native crossbred steers (average initial body weight: 609.4 ± 46 kg; average age 31.6 mo) were subjected to three ad libitum dietary regimes and were maintained in individual pens for 90 d before slaughter. The experimental design was a randomized complete block design by initial age and body weight with six replicates. The dietary regimens used different proportions of broken rice (0%, 16%, and 32% (w/w) of dry matter (DM)) instead of cassava chips in a fermented total mixed ration. All dietary treatments were evaluated for in vitro gas production and tested in in vivo feeding trials. Results: The in vitro experiments indicated that organic matter from broken rice was significantly more digestible than that from a cassava-based diet (p < 0.05). Silage quality, nutrient intake, ruminal fermentation characteristics, carcass fat thickness, and marbling score substantially differed among treatments. The ruminal total volatile fatty acids, propionate concentration, dietary protein intake, and digestibility increased linearly (p < 0.05) with broken rice, whereas acetate concentration and the acetate:propionate ratio decreased linearly (p < 0.05) with broken rice (added up to 32 g.kg −1 DM). Broken rice did not influence plasma metabolite levels or growth performance (p > 0.05). However, the marbling score increased, and the carcass characteristics improved with broken rice. A c c e p t e d A r t i c l e Conclusion: Substitution of cassava chips with broken rice in beef cattle diet may improve fattened beef carcass quality because broken rice increases rumen fermentation, fatty acid biosynthesis, and metabolic energy supply.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Broken rice in a fermented total mixed ration improves carcass and marbling quality in fattened beef cattle

Kotupan

Sommart

2021

Anim Biosci

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Estimation of silent phenotypes of calf antibiotic dysbiosis

Okada

Inabu

Miyamoto

et al. 2023

Sci Rep

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Reducing antibiotic usage among livestock animals to prevent antimicrobial resistance has become an urgent issue worldwide. This study evaluated the effects of administering chlortetracycline (CTC), a versatile antibacterial agent, on the performance, blood components, fecal microbiota, and organic acid concentrations of calves. Japanese Black calves were fed with milk replacers containing CTC at 10 g/kg (CON group) or 0 g/kg (EXP group). Growth performance was not affected by CTC administration. However, CTC administration altered the correlation between fecal organic acids and bacterial genera. Machine learning (ML) methods such as association analysis, linear discriminant analysis, and energy landscape analysis revealed that CTC administration affected populations of various types of fecal bacteria. Interestingly, the abundance of several methane-producing bacteria at 60 days of age was high in the CON group, and the abundance of Lachnospiraceae, a butyrate-producing bacterium, was high in the EXP group. Furthermore, statistical causal inference based on ML data estimated that CTC treatment affected the entire intestinal environment, potentially suppressing butyrate production, which may be attributed to methanogens in feces. Thus, these observations highlight the multiple harmful impacts of antibiotics on the intestinal health of calves and the potential production of greenhouse gases by calves.

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Bypass fat enhances liveweight gain and meat quality but not profitability of smallholder cattle fattening systems based on oil palm frond

et al. 2021

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Context. Oil palm frond (OPF) is abundantly available throughout Southeast Asia and is a good source of forage for feedlot cattle, particularly during the dry and monsoon seasons when other forage options are limited. However, the use of OPF in ruminants feed is constrained by its complex fibrous structure and low digestibility.Aims. The aim of this study was to investigate the impact of supplementation with bypass fat on growth, meat quality and economic returns in smallholder feedlot systems where Napier grass is replaced with OPF.Methods. Sixteen Brahman • Charolais crossbred steers, 23 AE 2.0 months old and with initial bodyweight of 425 AE 59.9 kg (mean AE s.e.), were randomly allocated in a 2 • 2 factorial randomised complete-block design experiment with the following dietary treatments: (i) fresh chopped Napier grass-based total mixed ration (TMR; Napier grass-fat), (ii) Napier grass-based TMR + 5% bypass fat (Napier grass+fat), (iii) OPF-based TMR (OPF-fat) and (iv) OPF-based TMR + 5% bypass fat (OPF+fat). Feed intake, digestibility of the diets and average daily gain were measured. The cattle were slaughtered to determine carcass dressing percentage and meat quality. Costs and return of fattening cattle were estimated.Key results. Despite higher intake, cattle fed OPF-fat had a lower bodyweight gain than did cattle fed grass-based diets due to lower digestibility. Bypass-fat supplementation increased the bodyweigh of cattle fed OPF but not of cattle fed Napier grass. Fat supplementation enhanced colour, backfat thickness, and fat content of meat in both the Napier grass-and OPF-based diets. However, replacing Napier grass with OPF reduced the net profit of smallholder feedlot systems, even with fat supplementation. Conclusion.While fat supplementation increased liveweight gain and enhanced some aspects of meat quality, the increased feeding cost reduced net profit. Therefore, supplementation of OPF with bypass fat is not recommended for smallholder feedlots in developing countries.Implications. Appropriate technology to reduce the feeding cost of OPF needs to be developed to make it an economically viable option for smallholder farmers.

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Enteric methane emissions, energy partitioning, and energetic efficiency of zebu beef cattle fed total mixed ration silage

Cited by 21 publications

References 16 publications

Broken rice in a fermented total mixed ration improves carcass and marbling quality in fattened beef cattle

Broken rice in a fermented total mixed ration improves carcass and marbling quality in fattened beef cattle

Estimation of silent phenotypes of calf antibiotic dysbiosis

Bypass fat enhances liveweight gain and meat quality but not profitability of smallholder cattle fattening systems based on oil palm frond

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