Effects of feeding early‐harvested orchardgrass–perennial ryegrass mixed silage instead of heading stage harvested timothy silage on digestion and milk production in dairy cows

Miyaji, Makoto; Yajima, Akira; Tada, Shingo; Sudo, Kenji; Aoki, Yasuhiro

doi:10.1111/asj.13376

Cited by 4 publications

(2 citation statements)

References 45 publications

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“…After the hybrid B. papyrifera feed is fermented, it can increase the effective degradation rate of dry matter and the utilization of nutrients, leading to an increase in milk production ( 34 ). Hybrid B. papyrifera fermented feed increases the peak milk production and slows down the decline in milk production, which can bring more benefits to the farm.…”

Section: Discussionmentioning

confidence: 99%

Hybrid Broussonetia papyrifera Fermented Feed Can Play a Role Through Flavonoid Extracts to Increase Milk Production and Milk Fatty Acid Synthesis in Dairy Goats

Zhao

Dong-liang

et al. 2022

Front. Vet. Sci.

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In order to explore the effect of hybrid Broussonetia papyrifera fermented feed on milk production and milk quality of dairy goats, and to compare with alfalfa hay, three dairy goat diets were designed based on the principle of equal energy and equal protein. The goats in the control group were fed a basic TMR diet (CG group), and the other two groups were supplemented with 10% alfalfa hay (AH group) and 10% hybrid B. papyrifera fermented feed (BP group). The results showed that the dry matter intake and milk production of BP group increased significantly. The total amount of amino acids and the content of each amino acid in the milk of AH group and BP group were lower than those of CG group. The content of saturated fatty acids in the milk of BP group decreased while the content of unsaturated fatty acids increased. The contents of prolactin, estrogen and progesterone in BP goat serum were generally higher than those of AH goat and CG goat. Subsequently, this study separated and cultured mammary epithelial cells from breast tissue, and added flavone extracted from the leaves of hybrid B. papyrifera and alfalfa to their culture medium for comparison, which is one of their important bioactive components. The results showed that low-dose alfalfa flavone (AH) and hybrid B. papyrifera flavone (BP) can increase cell viability. They also can increase the accumulation of intracellular triglyceride and the formation of lipid droplets. Both AH flavone and BP flavone significantly up-regulated the expression of genes related to milk fat synthesis, including genes related to fatty acid de novo synthesis (ACACA, FASN, and SCD1), long-chain fatty acid activation and transport related genes (ACSL1), and genes related to transcription regulation (SREBP1). The three genes related to triglyceride synthesis (DGAT1, DGAT2, and GPAM) were all significantly increased by BP flavone. Both AH flavone and BP flavone significantly increased the protein expression of progesterone receptor and estrogen receptor in mammary epithelial cells but had no effect on prolactin receptor.

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Section: Discussionmentioning

confidence: 99%

Hybrid Broussonetia papyrifera Fermented Feed Can Play a Role Through Flavonoid Extracts to Increase Milk Production and Milk Fatty Acid Synthesis in Dairy Goats

Zhao

Dong-liang

et al. 2022

Front. Vet. Sci.

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“…The matrix in the extract for sugar analysis of ruminant feeds is varied because various materials such as forage, silage, grains, byproducts from the food industry, and their mixtures are used. In ruminant feeds, fermented feeds such as silage contain lactic acid and acetic acid (Chen et al, 2020;Miyaji et al, 2020). Fujikawa et al (1974) reported that some organic acids (e.g., lactic acid) can give color in the PSA assay.…”

Section: Introductionmentioning

confidence: 99%

Validation of a phenol‐sulfuric acid method in a microplate format for the quantification of soluble sugars in ruminant feeds

Kondo

Mulianda

Matamura

et al. 2021

Animal Science Journal

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Soluble sugars in feeds are important for ruminant production; however, performing numerous sugar analyses within a short period is a laborious task. Here, we developed a phenol‐sulfuric acid (PSA) assay in a microplate format to quantify soluble sugars in ruminant feeds. This method is easy and quick and requires only a small quantity of harmful reagents. We found that assay measurements were not affected by the representative organic acids and sugar alcohol contained in feeds. The treatment of activated charcoal with ethanol extract prior to the PSA assay was effective in removing interfering compounds for a more accurate determination of soluble sugars in certain feeds. Furthermore, the inter‐day and intra‐day repeatability of the present method was acceptable. Hence, we conclude that the method developed in this study is suitable for routine analysis of soluble sugars content in ruminant feeds.

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Nitrogen balance and use efficiency on dairy farms in Japan: a comparison among farms at different scales

Toda

Motoki

Uchida

2020

Environ. Res. Commun.

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In recent decades, the rate of milk production per unit land area and per cow has increased with the intensification of the dairy system. The possible environmental risks arising from nutrients surpluses, such as nitrogen (N), are often evaluated using the N balance approach. In Hokkaido, the biggest dairy farming area in Japan, many dairy farms have started introducing a new dairy farming system called the total mixed ration (TMR) and biogas system. Feed and manure are managed at a community scale in these systems while each farm focuses primarily on milking cows. Thus, calculating the N balance for this system is complicated. Therefore, this study aimed to evaluate the N surplus and use efficiency (NUE), focusing mainly on the community-based dairy farming system, as described above. We investigated twenty dairy farms comprising a TMR centre (TMR-based farms) and nineteen conventional dairy farms (conventional farms). The Hokkaido dairy farms had a smaller N surplus and higher NUE than farms in other countries. The whole farm N surplus and NUE ranged from −163 to 701 kg N ha−1 and from 20% to 171% with median values of 40.5 kg N ha−1 and 69.5%, respectively. One of the possible reasons for the smaller N surplus and higher NUE is a lower stocking rate (averaged 1.3 cows ha−1) on Hokkaido dairy farms. There were strong relationships between feed N and N surplus because the studied dairy farms depended on purchased feed. In the comparison between the TMR centre and conventional dairy farms, the milk production level per cow and stocking rate tended to increase, and variations between farms decreased on the TMR-based farms. Increasing the amount of home-grown feed with pasture management is essential to decreasing N surplus for the new dairy farming systems.

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Effects of feeding early‐harvested orchardgrass–perennial ryegrass mixed silage instead of heading stage harvested timothy silage on digestion and milk production in dairy cows

Cited by 4 publications

References 45 publications

Hybrid Broussonetia papyrifera Fermented Feed Can Play a Role Through Flavonoid Extracts to Increase Milk Production and Milk Fatty Acid Synthesis in Dairy Goats

Hybrid Broussonetia papyrifera Fermented Feed Can Play a Role Through Flavonoid Extracts to Increase Milk Production and Milk Fatty Acid Synthesis in Dairy Goats

Validation of a phenol‐sulfuric acid method in a microplate format for the quantification of soluble sugars in ruminant feeds

Nitrogen balance and use efficiency on dairy farms in Japan: a comparison among farms at different scales

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