Maine organic dairy producers’ receptiveness to seaweed supplementation and effect of Chondrus crispus on enteric methane emissions in lactating cows
نویسندگان
چکیده
Introduction There is a growing interest in utilizing seaweed ruminant diets for mitigating enteric methane (CH 4 ) emissions while improving animal health. Chondrus crispus red that grows the Gulf of Maine (United States) and has shown to suppress CH production vitro . Organic dairy producers are currently feeding due herd health promoting benefits. However, large-scale adoption depends on technical financial factors, as well validation from pilot studies. Methods A survey was developed identify barriers drivers towards -reducing algal-based feeds. Concurrently, randomized complete block design study conducted investigate effect C. milk typical organic farm. Twenty-two organically certified Holstein Jersey cows averaging 29 ± 6.8 kg milk/d 150 69 days milk, were blocked randomly assigned control diet without (0CC), or with 6% [dry matter (DM) basis] (6CC). Samples collected last week 2-wk covariate period, wk 3, 5, 8, 10 after initiation treatments total 12 weeks. Gaseous measured using GreenFeed unit. Data analyzed MIXED procedure SAS repeated measures over time. Results All respondents ( n = 35; 54% response rate) familiar seaweeds feed, 34% already users. Producers who willing pay 0.64 USD/cow/d average also stated need co-benefits terms cattle performance requirement adoption. Feeding 6CC decreased by 13.9% compared 0CC (401 vs. 466 g/d). Further, yield (mean 27.1 kg/d), intensity 15.2 g /kg energy corrected milk), concentrations yields fat true protein not affected treatments. Discussion Producer receptiveness feeds will only be dependent purchase price, but simplicity integration into existing feed practices. at DM negative effects composition. Identifying bioactive compounds critical understand this cows.
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ژورنال
عنوان ژورنال: Frontiers in Veterinary Science
سال: 2023
ISSN: ['2297-1769']
DOI: https://doi.org/10.3389/fvets.2023.1153097