Comparative evaluation of raw and roasted soybean in lactating crossbred cows

Abstract

An experiment was conducted to evaluate the effect of roasting whole soybean in the local level on their chemical composition, nitrogen fractions, in situ degradability, and feeding performance in crossbred (Karan Swiss and Karan Fries) dairy cows. Twelve lactating crossbred cattle (369.08 ± 17.53 kg body weight) were randomly divided into two groups on the basis of milk yield (10.18 kg/day) and day of calving (89 days) in a randomized block design. Cows were fed green maize fodder and concentrate mixtures with 1 kg raw soybean as fed basis (7.6% of total diet) in the control group, where as roasted soybean replaced raw soybean in the treatment group to make both diets isonitrogenous and isocaloric. The roughage to concentrate ratio was around 55:45 in both diets. The cows were housed in individual byres and fed experimental diet for 90 days. The total dry matter intake per animal in both groups was similar. The digestibility of dry matter, organic matter, crude protein, ether extract, and neutral detergent fiber was comparable in both groups. The average milk production and fat-corrected milk yield per day was similar during the trial. Milk fat, milk protein, and solids not fat content remained unaffected and similar in both groups. All the animals maintained their body weight in both groups. Thus, rumen bypassing of protein fractions at the present method of bypassing did not have the desired level of beneficial effect in medium producing crossbred cows.

Milk Production and Income over Feed Costs in Dairy Cows Fed Medium-roasted Soybean Meal and Corn Dried Distiller’s Grains with Solubles

“…In this study, a no significant different effect on DM intake by dietary RUP supplement was in agreement with some previous studies ( Anderson et al, 2006 ; Sirohi et al, 2011 ). Experimental diets were formulated to be dietary RDP levels at 103.12, 103.27, 97.14, and 100.21 g/kg DM corresponding to the control, R-SBM, DDGS, and SB-DG diets to meet or exceed the nutrient requirements of the lactating cows based on NRC (2001) .…”

“…It is clear that roasting method should have an appropriate time and temperature combination for effective bypassing rumen. Roasting of soybean led to increase its bypass protein as reflected by increasing in RUP value and a corresponding decrease in effective protein degradability ( Fathi Nasri et al, 2008 ; Sirohi et al, 2011 ). The increase in protein bypass ability was also caused the changes in protein fractions due to heat transfer during roasting ( Fathi Nasri et al, 2008 ).…”

“…The increase in protein bypass ability was also caused the changes in protein fractions due to heat transfer during roasting ( Fathi Nasri et al, 2008 ). Sirohi et al (2011) reported that roasting method also led to increase undegradable protein fractions for the whole digestive tract, which may be corresponding to an increase in the formation of indigestible N containing compounds (Maillard products) resulting from heat treatment and also indicates decreases in nutritive value, especially protein. The estimating RUP of CDDGS in the current study was 60.0%.…”

“…The improved milk and milk composition yields in this study were in agreement with other researches evaluating either wet or dry distillers grains with solubles ( Anderson et al, 2006 ; Janicek et al, 2008 ; Gehman and Kononoff, 2010 ). Recently, Sirohi et al (2011) reported that roasted SBM inclusion in dairy cattle diet led to improve milk production without affecting the DM intake. The increased milk production was strongly observed when roasted SBM and CDDGS mixture added in the diet of dairy cows but this would depend upon the protein quality of feed currently used in the current study.…”

Effect of feeding strategies and cropping systems on greenhouse gas emission from Wisconsin certified organic dairy farms

“…Colmenero and Broderick (2006) found that replacing corn grain with soybean meal did not affect DMI, milk production, or diet digestibility when dietary CP level increased from 17.8 to 19.4%, which was similar to the dietary CP range of our study. In addition, Sirohi et al (2011) found that replacing raw soybean with roasted soybean had no effect on performance (DMI and milk production) in lactating crossbred cows. Therefore, DMI and milk production were assumed to be constant, regardless of the combination of CG and SB in the ration.…”