The effect of bromoform supplementation in Angus cows during late gestation on offspring’s growth performance and maternal greenhouse gas emissions using two devices
IF 1.9 3区 农林科学Q2 AGRICULTURE, DAIRY & ANIMAL SCIENCE
Matilda G. Dent , Alice H. Brownrigg , Bruno R. Costa Alves , Kellie M. Wenham , Stephen J. Lee , Wayne S. Pitchford , Nigel W. Tomkins , Colin L. Trengove , Mariana Caetano
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引用次数: 0
Abstract
Asparagopsis taxiformis and Asparagopsis armata are red seaweed species capable of reducing enteric methane (CH4) emissions in cattle by over 80 % due to the presence of bromoform. This project aimed to investigate the effect of bromoform supplementation on CH4 emissions of pregnant cows fed low-quality feed and its impact on growth performance of offspring. Gas measurements were obtained using both a handheld device (Bosean K-600) and GreenFeed units. Forty-two pregnant Angus cows (706 ± 71 kg; mean ± standard deviation) were allocated to a control or bromoform group based on body weight. The bromoform group was supplemented with bromoform (0.69 0.07 mg/kg body weight/day) pre-calving. Progeny weights at birth and 156 days of age were recorded. Calf growth was not affected by the treatment. There was an interaction between treatment and duration of supplementation for CH4 emissions (P = 0.0015). Bromoform supplementation decreased cow CH4 emissions by 45 % in the first week, 70 % in the second week, and 77 % in the third and fourth weeks. No difference was observed for CH4 emissions between weeks 1 to 4 for the control group. Carbon monoxide levels (ppm) were significantly higher in the bromoform group (0.39 vs 33.54 ppm; P = 0.0158). Moderate to high correlations were observed between devices for CH4 emissions. Maternal bromoform supplementation effectively mitigates CH4 while not impacting the progeny body weights in beef cattle. The correlations between devices demonstrated potential for future adoption of the handheld device.
期刊介绍:
Livestock Science promotes the sound development of the livestock sector by publishing original, peer-reviewed research and review articles covering all aspects of this broad field. The journal welcomes submissions on the avant-garde areas of animal genetics, breeding, growth, reproduction, nutrition, physiology, and behaviour in addition to genetic resources, welfare, ethics, health, management and production systems. The high-quality content of this journal reflects the truly international nature of this broad area of research.