Dimas Hand Vidya Paradhipta;Myeong Ji Seo;Seung Min Jeong;Young Ho Joo;Seong Shin Lee;Pil Nam Seong;Hyuk Jun Lee;Sam Churl Kim
Animal Bioscience
/
v.36
no.5
/
pp.720-730
/
2023
Objective: This study investigated the effects of corn silage as a source of microbial inoculant containing antifungal and carboxylesterase-producing bacteria on fermentation, aerobic stability, and nutrient digestibility of fermented total mixed ration (FTMR) with different energy levels. Methods: Corn silage was used as a bacterial source by ensiling for 72 d with an inoculant mixture of Lactobacillus brevis 5M2 and L. buchneri 6M1 at a 1:1 ratio. The corn silage without or with inoculant (CON vs MIX) was mixed with the other ingredients to formulate for low and high energy diets (LOW vs HIGH) for Hanwoo steers. All diets were ensiled into 20 L mini silo (5 kg) for 40 d in quadruplicate. Results: The MIX diets had lower (p<0.05) acid detergent fiber with higher (p<0.05) in vitro digestibilities of dry matter and neutral detergent fiber compared to the CON diets. In terms of fermentation characteristics, the MIX diets had higher (p<0.05) acetate than the CON diets. The MIX diets had extended (p<0.05) lactic acid bacteria growth at 4 to 7 d of aerobic exposure and showed lower (p<0.05) yeast growth at 7 d of aerobic exposure than the CON diets. In terms of rumen fermentation, the MIX diets had higher (p<0.05) total fermentable fraction and total volatile fatty acid, with lower (p<0.05) pH than those of CON diets. The interaction (p = 0.036) between inoculant and diet level was only found in the immediately fermentable fraction, which inoculant was only effective on LOW diets. Conclusion: Application of corn silage with inoculant on FTMR presented an antifungal effect by inhibiting yeast at aerobic exposure and a carboxylesterase effect by improving nutrient digestibility. It also indicated that fermented feedstuffs could be used as microbial source for FTMR. Generally, the interaction between inoculant and diet level had less effect on this FTMR study.
Saba Anwar;Anjum Khalique;Hifzulrahman;Muhammad NaeemTahir;Burhan E Azam;Muhammad Asim Tausif;Sundas Qamar;Hina Tahir;Murtaza Ali Tipu;Muhammad Naveed ul Haque
Animal Bioscience
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v.37
no.8
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pp.1387-1397
/
2024
Objective: The objective of the current study was to find out the independent and interactive effects of prilled fat supplementation with protein on the production performance of early lactating Nili Ravi buffaloes. Methods: Sixteen early lactating buffaloes (36.75±5.79 d in milk; mean±standard error) received 4 treatments in 4×4 Latin-square design according to 2×2 factorial arrangements. The dietary treatments were: i) low protein low fat, ii) low protein high fat, iii) high protein low fat, and iv) high protein high fat. The dietary treatments contained 2 protein (8.7% and 11.7% crude protein) and fat levels (2.6% and 4.6% ether extract) on a dry matter basis. Results: The yields of milk and fat increased with increasing protein and fat independently (p≤0.05). Energy-, protein-, and fat-corrected milk yields also increased with increasing protein and fat independently (p≤0.05). Increasing dietary protein increased the protein yield by 3.75% and lactose yield by 3.15% and increasing dietary fat supplies increased the fat contents by 3.93% (p≤0.05). Milk yield and fat-corrected milk to dry matter intake ratios were increased at high protein and high fat levels (p≤0.05). Milk nitrogen efficiency was unaffected by dietary fat (p>0.10), whereas it decreased with increasing protein supplies (p≤0.05). Plasma urea nitrogen and cholesterol were increased by increasing protein and fat levels, respectively (p≤0.05). The values of predicted methane production reduced with increasing dietary protein and fat. Conclusion: It is concluded that prilled fat and protein supplies increased milk and fat yield along with increased ratios of milk yield and fat-corrected milk yields to dry matter intake. However, no interaction was observed between prilled fat and protein supplementation for production parameters, body weight, body condition score and blood metabolites. Predicted methane production decreased with increasing protein and fat levels.
Objective: The objective of this study was to determine internal structure spectral profile of by-products from coffee processing that were affected by added-microorganism fermentation duration in relation to truly absorbed feed nutrient supply in ruminant system. Methods: The by-products from coffee processing were fermented using commercial fermentation product, consisting of various microorganisms: for 0 (control), 7, 14, 21, and 28 days. In this study, carbohydrate-related spectral profiles of coffee by-products were correlated with their chemical and nutritional properties (chemical composition, total digestible nutrient, bioenergy values, carbohydrate sub-fractions and predicted degradation and digestion parameters as well as milk value of feed). The vibrational spectra of coffee by-products samples after fermentation for 0 (control), 7, 14, 21, and 28 days were determined using a JASCO FT/IR-4200 spectroscopy coupled with accessory of attenuated total reflectance (ATR). The molecular spectral analyses with univariate approach were conducted with the OMNIC 7.3 software. Results: Molecular spectral analysis parameters in fermented and non-fermented by-products from coffee processing included structural carbohydrate, cellulosic compounds, non-structural carbohydrates, lignin compound, CH-bending, structural carbohydrate peak1, structural carbohydrate peak2, structural carbohydrate peak3, hemicellulosic compound, non-structural carbohydrate peak1, non-structural carbohydrate peak2, non-structural carbohydrate peak3. The study results show that added-microorganism fermentation induced chemical and nutritional changes of coffee by-products including carbohydrate chemical composition profiles, bioenergy value, feed milk value, carbohydrate subfractions, estimated degradable and undegradable fractions in the rumen, and intestinal digested nutrient supply in ruminant system. Conclusion: In conclusion, carbohydrate nutrition value changes by added-microorganism fermentation duration were in an agreement with the change of their spectral profile in the coffee by-products. The studies show that the vibrational ATR-FT/IR spectroscopic technique could be applied as a rapid analytical tool to evaluate fermented by-products and connect with truly digestible carbohydrate supply in ruminant system.
This experiment was conducted to determine correlation between in vitro protein fractions and in situ protein degradation rate with major dairy protein sources(soybean meal, corn gluten meal, cotton seed meal, kapok seed meal and perilla meal). Five protein fractions were obtained according to the Cornell Net Carbohydate and Protein System(CNCPS), and in situ protein degradation rates were determined by technique using nylon bags incubated for 0, 4, 8, 12 and 24hrs in the rumen of three Holstein steers. Fraction A was highest in kapok seed meal(14.6%) and lowest in corn gluten meal(0.6%) (P<0.05). The highest B1, B2 and B3 fractions were contained in soybean meal(8.27%), cotton seed meal(74%), and perilla meal(40%), respectively. Corn gluten meal was very high in fraction C. In situ protein degradation rate of soybean meal was 98%, highest among five protein sources, and corn gluten meal had the lowest rate at 28%. Correlation analysis showed that easily soluble fractions of both methods, in situ protein degradation rate and digestible protein fractions, and in situ protein degradation rate minus “a” and fraction B2+B3 were highly correlated. These results indicate that in vitro protein fractionation can be used in the estimation of in situ protein degradation.
Kim, K.H.;Seol, Y.J.;Lee, S.S.;Oh, Y.G.;Nam, I.S.;Kim, D.H.;Choi, C.W.
Journal of Animal Science and Technology
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v.49
no.5
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pp.657-666
/
2007
This study was conducted to evaluate the effects of dietary addition of caprylic acid(CA)-cyclodextrin (CD) complex on in vitro fermentation characteristics, total gas and methane production. Experiment was done with six treatment groups; 1) no CA-CD complex(control), 2) CA 20 mg(T1), 3) CD 830 mg(T2), 4) CA-CD complex 425 mg(T3), CA-CD complex 850mg(T4), CA-CD complex 1,700 mg(T5). Ruminal pH, ammonia and total VFA concentrations of T2, T3, T4 and T5 were lower(P<0.05) than those of control and T1 for the 12h incubation. The increase in molar percentage of propionate was observed in T4 and T5 compared with control and T2 for the 8h incubation(P<0.05), however, the ratio of acetate to propionate was unchanged in all treatments. Total gas of T1 was lower than that of control, but T2, T3, T4 and T5 were higher compared with control for 12h incubation(P<0.05). If the methane ratio (as %) to total gas for all treatments was compared, T3, T4 and T5(CA-CD supplemented groups) averaged 2.7% whereas control, T1 and T2 showed 3.4, 2.8 and 5.1%, respectively. Therefore, according to these results, it might be concluded that supplementation of CA-CD complex could reduce methane production without disrupting ruminal fermentation.
Sixteen ruminally cannulated Korean native steers (Hanwoo; $626.2\pm47.72$ kg) were used to investigate the effects of polyclonal antibodies against abdominal (AAb) and subcutaneous adipocyte membrane proteins (SAb) on ruminal fermentation patterns and blood metabolites. The body weight (BW) of Hanwoo was decreased 2-weeks after AAb and SAb injection, BW reduction was also observed in control and non-immunized serum groups, indicating that stress induced by other factors (e.g. blood sampling etc.) rather than antibodies injection may affect the BW reduction. Antibodies treatment did not affect (P > 0.05) rumen pH, volatile fatty acids and ammonia-N concentration. The ranges were similar with typical ranges of those in Hanwoo. Compared with control, blood urea N concentration was decreased in AAb group and increased (P < 0.05) in SAb group before antibodies treatment. However, none of the groups were significantly (P > 0.05) affected at 2- or 4-weeks after the treatment. Concentration of plasma glucose in the non-immunized serum group was significantly higher (P < 0.05) than the other groups at 0-week after treatment. However, antibodies treatment did not affect the concentration of plasma glucose. Concentration of plasma triglyceride showed no difference (P > 0.05) between the groups and ranged from 11.4 to 19.9 mg/dl, which is the perfect range of plasma triglyceride of Hanwoo fed concentrate based diets. In conclusion, these results may indicate that the present AAb and SAb have safety in nutritional physiological metabolism in Hanwoo. Further study on in vivo fat reduction of the antibodies against abdominal and subcutaneous adipocytes PMPs of Hanwoo is required for inedible fat-reduced high quality beef production.
Journal of The Korean Society of Grassland and Forage Science
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v.30
no.2
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pp.143-150
/
2010
Three Hanwoo steers (BW $623{\pm}18.5kg$) with ruminal and duodenal cannulae were used to investigate nutrients degradability and total digestible nutrient (TDN) of whole crop rice silage (WRS) harvested at different mature stages using in situ technique. Crude protein content (mean 4.81%) decreased with progressed maturity at harvest except for WRS harvested at yellow stage. Ruminal dry matter degradability of WRS at milk stage tended to be slightly lower than that of the other stages during the entire incubation time from 12 h post-incubation. The rapidly degradable N (a-fraction) of WRS harvested at milk stage was significantly (p<0.05) higher than that of WRS at dough stage whereas the slowly degradable N (b-fraction) of WRS harvested at yellow and dough stages were statistically (p<0.05) higher than those of the other WRS. Effective protein degradability (EPD) of WRS harvested at yellow stage was numerically (compared with dough and milk stages) and statistically (compared with mature stage) higher than EPD of the other WRS. Protein digestibility of WRS at different gastric tracts did not differ (p>0.05) between the harvest stages. TDN of WRS harvested at yellow stage in Hanwoo steers was statistically (compared with milk stage) and numerically (compared with dough and mature stages) higher than TDN of the other WRS. Overall, taking present feed evaluation into consideration, WRS harvested at yellow stage may be recommended for Hanwoo steers. Further studies on in vivo rumen fermentation pattern and minimizing nutrients loss during harvest should be required for accurate feed evaluation.
In vitro and in situ incubation studies were conducted to determine effects of yeast culture supplements (Saccharomyces cerevisiae) on cellulolytic bacterial function and fiber digestion in rice straw. In vitro dry matter digestibility of rice straw gradually increased according to supplemental levels of yeast culture (0.0, 0.2, 0.4, 0.6, 0.8 and 1.0%). Digestibility of rice straw started to increase apparently when yeast culture was added more than 0.6% level (p<0.05). Also, we reconfirmed that in vitro dry matter digestibility was significantly increased by 0.6% of yeast culture addition in 4% NaOH treated and non-treated rice straws (p<0.05). When in situ dry matter digestibility was tested in Korean native goats fed basal diet or experimental diet which contained 1.0% of yeast culture, the yeast culture feeding improved in situ dry matter digestibility in both 4% NaOH treated and non-treated rice straws (p<0.05). In case of real-time PCR monitoring cellulolytic bacterial function, the bacterial population attached on rice straw showed the increasing trends with higher level of yeast culture spraying on rice straw. F. succinogenes and R. flavefaciens were significantly increased in accordance to spraying levels of yeast culture (0.0, 0.1 and 0.3%) at both 12 and 24 hrs of in situ incubation (p<0.05). R. albus was significantly higher population in yeast culture spraying than non-soraying at 12 hrs of in situ incubation (p<0.05). These bacterial populations were showed the increasing trends with digestibility enhancement of rice straw according to the higher levels of yeast culture supplement. Overall, these results clearly suggest that the presence of yeast culture result in noticeable increase of rice straw digestion, which is modulated via good effect on cellulolytic bacterial attachment to fiber substrates.
We conducted two experiments to evaluate the effects of chromium picolinate(CrP) on growth performance, carcass characteristics and plasma components in Holstein bulls. In trial Ⅰ, eight finishing Holstein bulls(300${\pm}$6.99Kg) were allocated to 2 treatments(control and 0.05% CrP) with 4 replication for 10-months. In results, growth performance was not affected by CrP addition. The plasma insulin concentration in 0.05% CrP group was about 2 times higher than the control group of Holstein bulls. The levels of plasma NEFA were significantly decreased to 59.00 mEq/dl with 0.05% CrP treatment(P<0.05), but the levels of plasma glucose and PUN were not altered by 0.05% CrP treatment. The grade of carcass was not different between control and 0.05% CrP group, but back fat thickness in 0.05% CrP group was increased in 22.33% compared with control group. In trial 2, fifteen growing- finishing Holstein bulls(160${\pm}$4.63Kg) were allocated to 3 treatments(control, 0.025% CrP and 0.05% CrP) with 5 replication for 14-months. During the overall experimental period, growth performance was not affected by CrP levels. The levels of hormone and metabolites were not affected by CrP supplementa- tion. The carcass characteristics were not different between control and treatment. These results show that the CrP may have no effects for beef cattle production because of degradation of CrP conjugation in the rumen. However treatment of short term provide a possibility the effects of development for lipogenesis.
A series of four in vitro experiments were conducted to evaluate condensed molasses solubles (CMS) as a source of nitrogen for ruminal microbes. In experiment 1, as compared with urea, the value of CMS as a nitrogen source was examined. In experiment 2, to determine the time needed for maximal response of microbial synthesis, the treatments were incubated for increasing times (from 6 h to 16 h). Because a sediment that was assumed to cause nitrogen loss was found after incubation in experiments 1 and 2, it was decided to avoid formation of sediment using sugar instead of molasses or a shorter time incubation (experiments 3 and 4). Furthermore, in experiment 4, because the extent to which ammonia nitrogen is released from CMS and urea before 6 h of incubation was uncertain, it was decided to examine the peaks of concentrations of ammonia nitrogen released from CMS and urea by sampling after 2 h incubation. There was no significant difference in the concentration of microbial-N between molasses/CMS and molasses/ urea treatments in experiment 1, although there were greater decreases in ammonia concentration with the molasses/CMS treatment. The microbial protein synthesis was increased progressively until 10 h for both treatments (experiment 2). Although ingredients that were completely soluble (sucrose, urea) were used in experiment 3, the sediment was still evident suggesting that the sediment was largely of microbial not feed origin. Ammonia release from CMS was much faster than from urea during 2 h incubation. In conclusion, the results of the present studies suggest that the feed value of CMS as a source of nitrogen for ruminal bacteria was similar to that of urea when it was estimated in vitro.
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