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Methane mitigation potential of alternate hydrogen sinks in vitro and their impact on the performance of male buffalo calves

KrishiKosh

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Title Methane mitigation potential of alternate hydrogen sinks in vitro and their impact on the performance of male buffalo calves
 
Creator Mahajan, Chetna
 
Contributor Wadhwa, Manju
 
Description The present study was conducted to screen alternate hydrogen sinks individually and in combination for their antimethanogenic activity under in vitro gas production test and also to investigate the effect of best individual alternate hydrogen sinks or a combination of these sinks nutrient utilization under in vivo condition. A complete feed was formulated with roughage and concentrate ratio of 60:40. It was supplemented with the vegetable oils [Sunflower oil (SFO), Safflower oil (SaFO), Coconut oil (CocO), Cotton seed oil (CSO), Carrot seed oil (CarSO), Linseed oil (LSO), Canola oil (CanO), Castor oil (CasO) and Rapeseed oil (RSO)]; dicarboxylic acids (DCAs) (Fumaric acid, Pyruvic acid, Malic acid, Lactic acid, Acrylic acid and Citric acid); spices and herbs (Turmeric, cinnamon, ginger, oregano, clove and ajwain), and combination of all the three alternate hydrogen sinks @ 0-3 % on dry matter (DM) basis.The in-vitro methane production was the lowest from CSO, SFO, fumaric acid and turmeric. The preliminary screening of phytochemicals revealed that spices have great potential to act as antioxidants. Methanolic extract of saponin was highest in turmeric.The methane/100mg DDM decreased by 3 per cent with supplementation of vegetable oils. In comparison to unsupplemented diet, fermentative methane decreased by 9.7 (@1per cent level of supplementation) to 19.4 % (@3% level of supplementation on DMB) and 4.3, 4.7 and 5.2 at 1, 2 and 3 % of DCAs, respectively. The individual supplementation revealed that amongst the vegetable oils, cotton seed oil and sunflower oil, amongst DCAs fumaric acid and amongst spices turmeric supplementation gave the best response. Therefore, for assessing the effect of combined hydrogen sinks, 2 groups of supplements were formulated. In the first group CSO, turmeric and fumaric acid were supplemented to the complete feed @ 1 % of each in all possible combinations, while in the 2nd group SFO, turmeric and fumaric acid were supplemented to the complete feed @ 1 % of each in all possible combinations. Use of alternate hydrogen sinks from group with CSO had an edge over the one with SFO to mitigate/reduce enteric methane production. Therefore combination with CSO was selected for in vivo studies. Sixteen male buffaloes (359±5.91 kg BW) divided into four groups were offered complete feed (CF) (control), or CF supplemented with CSO alone or combination of CSO+T or CSO+F and the results revealed that the alternate hydrogen sinks used did not affect feed intake, digestibility of nutrients and blood biochemical parameters. The high PNI for diet containing CSO alone indicated that more nitrogen is converted to microbial nitrogen and less is excreted in urine. However, the N-retention was not affected. The cotton seed oil with or without either turmeric or fumaric acid supplementation improved (P>0.05) nutrient utilization and performance of buffalo calves.
 
Date 2016-08-24T16:50:15Z
2016-08-24T16:50:15Z
2015-10-05
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/73726
 
Language en
 
Format application/pdf