Effects of feeding ground versus pelleted total mixed ration on digestion, rumen function and milk production performance of dairy cows

Zhong, Rongzhen; Zhao, Changwen; Feng, P; Wang, Yitong; Zhao, Xin; Luo, Dongwen; Cheng, Long; Liu, Di; Fang, Yi

doi:10.1111/1471-0307.12656

Cited by 12 publications

(9 citation statements)

References 36 publications

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“…It is worth to note that in this study and other studies comparing the effect of pelleting TMR for lambs ( 11 , 13 , 46 ) rumen pH was within range required for normal physiological function and did not induce acidosis. In a study conducted with dairy cows, rumen pH was within the normal range, and no clinical signs of rumen acidosis were observed, but the authors raised caution concerning the potential risk of acidosis due to a 3.5% drop in milk yield and a 8.2% decrease in milk fat to milk protein ratio in response to feeding pelleted TMR ( 7 ). All studies cited in this section lasted for <2 months.…”

Section: Discussionmentioning

confidence: 99%

“…Although there are many advantages of TMR, this feeding system also has some limitations ( 2 ), particularly feed sorting, which need to be addressed ( 4 ). This led to the recent trend to offer partially or completely pelleted TMR to dairy cows and heifers in some regions of the world ( 5 – 7 ). The use of pelleted TMR has also been reported for goat ( 8 , 9 ) and sheep production ( 10 – 13 ).…”

Section: Introductionmentioning

confidence: 99%

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Pelleting of a Total Mixed Ration Affects Growth Performance of Fattening Lambs

Sun

Huo

et al. 2021

Front. Vet. Sci.

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Feeding pelleted total mixed rations (TMR) instead of traditional loose concentrate plus forage to fattening lambs is an emerging practice. This study aimed to determine the effects of feeding pelleted TMR to fattening lambs on feed intake behaviour, growth performance, feed digestion, rumen fermentation characteristics, rumen microbial community, serum parameters, slaughter performance, meat quality, and the economic outcome. Two physical forms (pelleted vs. un-pelleted) of TMR composed of the same ingredients with the same particle sizes were compared in three animal experiments. Feed intake and average daily gain were higher when the TMR was pelleted, but apparent total tract digestibility of nutrients (organic matter, crude protein, neutral detergent fibre, acid detergent fibre, and ether extract) and serum parameters were not affected and apparent total tract dry matter digestibility was slightly lower. Feeding pelleted TMR increased total short-chain fatty acid concentration and decreased rumen pH. Rumen microbial community was not affected by the physical form of the TMR at phylum level but changed slightly at genus level. Liveweight at slaughter and hot carcass weight were higher for lambs fed the pelleted compared to the un-pelleted TMR, while dressing percentage and meat quality were not affected. In conclusion, feeding pelleted TMR improves growth performance of fattening lambs mainly due to an increase in feed intake. Feeding pelleted TMR is a feasible strategy for intensive lamb fattening operations.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Pelleting of a Total Mixed Ration Affects Growth Performance of Fattening Lambs

Sun

Huo

et al. 2021

Front. Vet. Sci.

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“…AB showed a higher level of acetic acid than Meneses et al [13] (48.3 vs. 12.5 g/kg DM), as well as in the rest of fermentation metabolites, as AB had a higher content of rapidly fermentable carbohydrates (sugars; 98.3 vs. 56.1 g/kg DM), which favoured a more intense fermentation. Although moderate concentrations of acetic acid in the ration can be beneficial, as it is absorbed in the rumen and used as energy or incorporated as fat into milk or body reserves [61], the lactic:acetic ratio is considered a good indicator of the type of fermentation that has occurred in the silage and its quality, the best levels being between 3 and 1 [42]. In this study, that ratio was achieved from day 7 until day 60, but the final acetic acid increase observed at day 200 caused a slight decrease in the ratio.…”

Section: Fermentationmentioning

confidence: 99%

Ensiling Process in Commercial Bales of Horticultural By-Products from Artichoke and Broccoli

Monllor

Romero

Muelas

et al. 2020

Animals

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Wastes from artichoke and broccoli crops and cannery industries represent an environmental problem. A viable option to this problem is ensiling them for use as ruminants feed. The aim of this study was to characterise the ensiling process of broccoli and artichoke by-products and assess their suitability to be part of the ruminant diet, as well their minimum shelf life. Twenty-one commercial round bale silos (300 kg and 0.64 m3) of each by-product were made. Samples were analysed at days 0, 7, 15, 30, 60, and 200 to determine microbial populations, fermentation metabolites, nutritional components, and phytosanitary residues. Feedstuffs showed good suitability for ensiling, and stabilisation was achieved on day 30. The variables with the greatest significant differences among sampling times were microbial populations and fermentative components. There were no important dry matter losses, and some significant differences were observed in the nutritional composition, especially in crude protein and fibrous fractions, but they were not relevant for the loss of nutritional quality of silages. The phytosanitary residues determined on day 200 were below the maximum residue limits set by European legislation. So, ensiling these by-products in commercial round bale silos is a suitable and profitable technique that allows their preservation for a long time (200 days).

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“…Feeding total mixed rations (TMR) has been popular due to its advantages of providing balanced nutrients in the diet, the relatively stable rumen environment, reduced feed sorting, and better animal performance in dairy cows (15). TMR feeding has been further developed by pelleting the TMR and fed to cattle (16)(17)(18) and sheep (19)(20)(21)(22)(23). Feeding of a pelleted TMR results in almost no feed selection by animals, non-palatable ingredients can be included in the diet, minimisation of feed loss during storage and feeding, and improved ease of feeding management and labour efficiency (11).…”

Section: Introductionmentioning

confidence: 99%

Dietary Supplementation of Yeast Culture Into Pelleted Total Mixed Rations Improves the Growth Performance of Fattening Lambs

Song

You³

et al. 2021

Front. Vet. Sci.

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There is a growing interest in the use of yeast (Saccharomyces cerevisiae) culture (YC) for the enhancement of growth performance and general animal health. Grain-based pelleted total mixed rations (TMR) are emerging in intensive sheep farming systems, but it is uncertain if the process of pelleting results in YC becoming ineffective. This study aimed to examine the effects of YC supplemented to pelleted TMR at two proportions of corn in the diet on animal performance, feed digestion, blood parameters, rumen fermentation, and microbial community in fattening lambs. A 2 × 2 factorial design was adopted with two experimental factors and two levels in each factor, resulting in four treatments: (1) low proportion of corn in the diet (LC; 350 g corn/kg diet) without YC, (2) LC with YC (5 g/kg diet), (3) high proportion of corn in the diet (HC; 600 g corn/kg diet) without YC, and (4) HC with YC. Fifty-six 3-month-old male F2 hybrids of thin-tailed sheep and Northeast fine-wool sheep with a liveweight of 19.9 ± 2.7 kg were randomly assigned to the four treatment groups with an equal number of animals in each group. The results showed that live yeast cells could not survive during pelleting, and thus, any biological effects of the YC were the result of feeding dead yeast and the metabolites of yeast fermentation rather than live yeast cells. The supplementation of YC resulted in 31.1 g/day more average daily gain regardless of the proportion of corn in the diet with unchanged feed intake during the 56-day growth measurement period. The digestibility of neutral detergent fibre and acid detergent fibre was increased, but the digestibility of dry matter, organic matter, and crude protein was not affected by YC. The supplementation of YC altered the rumen bacterial population and species, but the most abundant phyla Bacteroidetes, Firmicutes, and Proteobacteria remained unchanged. This study indicates that YC products can be supplemented to pelleted TMR for improved lamb growth performance, although live yeast cells are inactive after pelleting. The improved performance could be attributed to improved fibre digestibility.

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Effects of feeding ground versus pelleted total mixed ration on digestion, rumen function and milk production performance of dairy cows

Cited by 12 publications

References 36 publications

Pelleting of a Total Mixed Ration Affects Growth Performance of Fattening Lambs

Pelleting of a Total Mixed Ration Affects Growth Performance of Fattening Lambs

Ensiling Process in Commercial Bales of Horticultural By-Products from Artichoke and Broccoli

Dietary Supplementation of Yeast Culture Into Pelleted Total Mixed Rations Improves the Growth Performance of Fattening Lambs

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