記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：ヨナゴ・アクタ・メディカ刊行会  

Background Diabetes self-management education through peer support has beneficial effects, especially in regions with limited medical resources. To ensure peer educators continue to provide peer-led education programs, it is important that they remain motivated to instruct patients. Here, to explore measures to enhance peer-educators’ motivation toward such programs, we examined the cognitive and emotional changes in Filipino type 2 diabetics after 7-month activities as peer educators. Methods We individually performed semi-structured interviews with 13 peer educators with 20 years of age or above in August 2017 (immediately before starting their peer-education activities) and in March 2018 (7 months after the start). The first interview was performed after the peer educators had received 2-day training of diabetes self-management. In both interviews, we asked the peer educators about their feelings toward peer-led educational activities (e.g., sat-isfaction, difficulty, reward, confidence, and challenges). Their replies about their own cognition and emotions were interpreted and integrated, and then analyzed qualitatively. Results Four and seven categories were extracted from the first and second interviews, respectively. The category “Cognition of patients’ active learning attitudes and of positive changes in patients’ physical conditions and behavior” observed in the second interview led to “Cognition of growth as a peer educator” and “Satisfaction with supporting patients as a peer educator.” These two feelings gave the peer educators’ “Increased motivation to continue the activities as a peer educator.” This motivation was also associated with “Active collaboration among peer educators,” which was affected by “Difficulties and concerns in working as a peer educator.” Conclusion To sustain diabetic peer-led education programs, we suggest that interventions be implemented that increase peer educators’ motivation toward their activities and stimulate their awareness of the importance of collaborating with one another. Such collaboration should help to overcome the difficulties they may face in providing peer-led education.

DOI： 10.33160/yam.2022.11.007

Scopus

PubMed

記述言語：日本語   出版者・発行元：日本緬羊研究会  

<p>本研究は，放牧中に羊および山羊母子がそれぞれ分離した状態の音声と行動について，家畜福祉評価に必要な客観的指標となりうるポジティブやネガティブな発声と思われる場面を考察するため，モンゴル夏営地における羊および山羊母子間の音声と行動の意義について検討した。</p><p>分離時における発声は，母子羊と子山羊が移動時と食草移動時に，母山羊は移動時と休息時に共通して観察された。羊・山羊母子間の移動時における発声時間は，子に比べ母の方が有意に長かった（P＜0.05）。また，羊母子間の食草・移動時における発声時間は，子に比べ母の方が有意に長かった（P＜0.05）。羊母子間の音圧は，移動時において子に比べ母の方が有意に高く（P＜0.05），食草・移動時と休息時においてはいずれも母に比べ子の方が有意に高かった（P＜0.05）。</p><p>羊・山羊母子間の分離時に発声後，双方が遭遇してから授乳および吸乳行動に至る音声には，それぞれ基本周波数とホルマントおよび音圧に，それぞれ特徴が見られた。これら授乳・吸乳時と非授乳・吸乳時に大別したときに表示される，発声持続時間と音の高さおよび強さの成分が，情動場面を考える上で，重要な要素となりうることを示すものであった。</p><p>とくに，羊・山羊のポジティブな発声時間は短いこと，基本周波数やホルマントの変動が少ないことが示された。ネガティブな発声には，発声時間が長い傾向にあり，基本周波数やホルマントに変動が見られたことで識別が可能であった。</p>

DOI： 10.11595/jpnjsheepsci.2021.58_1

担当区分：筆頭著者,　責任著者   記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Animal Bioscience  

Objective: Portable laser methane detectors (LMDs) may be an economical means of estimating CH4 emissions from ruminants. We validated an LMD-based approach and then used that approach to evaluate CH4 emissions from indigenous dairy cows in a dryland area of Ethiopia. Methods: First, we validated our LMD-based approach in Simmental crossbred beef cattle (n = 2) housed in respiration chambers and fed either a high- or low-concentrate diet. From the results of the validation, we constructed an estimation equation to determine CH4 emissions from LMD CH4 concentrations. Next, we used our validated LMD approach to examine CH4 emissions in Fogera dairy cows grazed for 8 h/d (GG, n = 4), fed indoors on natural-grassland hay (CG1, n = 4), or fed indoors on Napier-grass (Pennisetum purpureum) hay (CG2, n = 4). All the cows were supplemented with concentrate feed. Results: The exhaled CH4 concentrations measured by LMD were linearly correlated with the CH4 emissions determined by infrared-absorption-based gas analyzer (r2 = 0.55). The estimation equation used to determine CH4 emissions (y, mg/min) from LMD CH4 concentrations (x, ppm m) was y = 0.4259x+38.61. Daily CH4 emissions of Fogera cows estimated by using the equation did not differ among the three groups; however, a numerically greater milk yield was obtained from the CG2 cows than from the GG cows, suggesting that Napier-grass hay might be better than natural-grassland hay for indoor feeding. The CG1 cows had higher CH4 emissions per feed intake than the other groups, without significant increases in milk yield and body-weight gain, suggesting that natural-grassland hay cannot be recommended for indoor-fed cows. Conclusion: These findings demonstrate the potential of using LMDs to valuate feeding regimens rapidly and economically for dairy cows in areas under financial constraint, while taking CH4 emissions into consideration.

DOI： 10.5713/ab.20.0739

Scopus

PubMed

その他リンク： http://animbiosci.org/journal/view.php?doi=10.5713/ab.20.0739

記述言語：英語   掲載種別：研究論文（学術雑誌）  

Background: Training peer leaders to deliver patient education is expected to be a low-cost approach to providing healthcare in urban-poor areas affected by a shortage of healthcare professionals. The purpose of this study was to examine the effects of a training program on the self-efficacy and knowledge of peer leaders with type 2 diabetes. Methods: A single-group longitudinal survey with baseline, intervention, and follow-up periods was conducted at a diabetes clinic in a small municipality in Metro Manila, Philippines. The intervention, a self-efficacy theory-based training program for peer-leaders of diabetic patients conducted in August 2017, comprised hands-on learning, demonstrations, quizzes, role-playing, group sharing, physical exercise, and a buffet lunch. The primary outcome was participants' self-efficacy for management of their diabetes. Secondary outcomes were participants' knowledge of diabetes and levels of emotional distress, motivation, and confidence for guiding their peers, satisfaction with the training program, hemoglobin A1c, and quality of life. Results: At 12 and 18 months after the intervention, participants' knowledge of diabetes was significantly increased compared with baseline (both P < 0.05). At earlier time points, an increasing, but not significant, trend was observed. The change in knowledge of diabetes from baseline to 18 months after intervention tended to be positively correlated with the change in self-efficacy (r = 0.594, P = 0.054). No significant differences were observed for any of the other outcomes, although the descriptive statistics showed an increasing trend for all of the outcomes except motivation. Conclusion: The training program significantly improved participants' knowledge of diabetes at 12 and 18 months after the training programs compared with baseline. A positive correlation between the changes in the levels of knowledge and self-efficacy suggested that the observed improvement of self-efficacy was facilitated by the improvement of knowledge of diabetes.

DOI： 10.33160/yam.2020.11.006

PubMed

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：WILEY  

Low nitrogen (N) utilization efficiency (NUE, the ratio of retained N to N intake [NI]) of ruminants is always a potential dietary protein wastage as well as a global environmental problem, and dietary N manipulation is the most effective way to improve NUE. We conducted 2 experiments to investigate the effects of replacing oat hay by leguminous forages (alfalfa hay [AH] in experiment [Exp] 1 and common vetch hay [CVH] in Exp 2) with 4 levels (0%, 8%, 16% or 24% AH and 0%, 10%, 20% or 30% CVH on dry matter [DM] basis) at the same crude protein (135 g/kg DM) and metabolizable energy (10.1 MJ/kg DM) on feed intake, N metabolism, NUE and blood composition of crossbred Simmental calves. Sixteen calves of each Exp were assigned to the four diets in a randomized block design. Faecal N (FN) output and the ratio of FN to NI increased with increasing AH/CVH proportions, whereas urinary N (UN) output, the ratio of UN to NI, and the ruminal ammonia N concentration gradually decreased in both experiments. Nutrient digestibility (DM, organic matter [OM] and neutral detergent fibre [NDF]) of calves showed a parabolic trend with gradually increasing AH/CVH proportions. The highest values of nutrient digestibility (DM, OM and NDF) of calves were observed in 16% AH in Exp 1 and 20% CVH in Exp 2. Our findings suggest that 16% and 20% substitution (as a percentage of the total DM allowance) of AH and CVH, respectively, for oat hay are optimal diets to improve NUE and reduce the potential impact of N excretion from livestock farming on the environment through shifting routes of N from urine to faeces without negative effects on live weight gain and nutrient digestibility of crossbred Simmental calves in dryland environments.

DOI： 10.1111/jpn.13288

Web of Science

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：MDPI  

Simple Summary In tropical regions, it is common practice to feed dairy cows poor-quality roughage, but this diet has been shown to decrease animal productivity and increase methane emissions. For these reasons, introducing alternative roughage feeds, such as nutritionally improved forages or bio-chemically treated straw, is essential for improving milk yield, dietary nitrogen utilization, and reducing enteric methane emission from dairy cows. Thus, we evaluated the effects of natural pasture hay, two improved grass hays (Napier andBrachiariahybrid grasses), and treated teff straw silage feeding as basal diets on nutrient digestibility, milk yield, nitrogen utilization efficiency, and enteric methane emissions using lactating Fogera dairy cows. Our results showed that improved grass hays and treated teff straw silage diet feeding increased milk yield, nutrient digestibility, and nitrogen utilization efficiency as compared to natural pasture hay. Moreover, the cows fed with improved grass hays and treated teff straw resulted in changing the nitrogen excretion pathway from urine to feces, as well as reduction of the methane production per daily milk yield. Hence, these results provide a novel feeding regimen through feeding nutritionally upgraded forages as a basal diet, which improves milk yield, nutrient utilization efficiency, and reduction of methane emission for sustainable dairy production in tropical regions. The nutritionally imbalanced poor-quality diet feeding is the major constraint of dairy production in tropical regions. Hence, alternative high-quality roughage-based diets are required to improve milk yield and reduce methane emission (CH4). Thus, we tested the effects of feeding natural pasture hay, improved forage grass hays (Napier andBrachiariaHybrid), and treated crop residues (Eragrostis tefstraw) on nutrient digestibility, milk yield, nitrogen balance, and methane emission. The eight lactating Fogera cows selected for the experiment were assigned randomly to a 4 x 4 Latin square design. Cows were housed in well-ventilated individual pens and fed a total mixed ration (TMR) comprising 70% roughage and 30% concentrate. The four roughage-based basal dietary treatments supplemented with formulated concentrate were: Control (natural pasture hay (NPH)); treated teff straw silage (TTS); Napier grass hay (NGH); andBrachiariahybrid grass hay (BhH). Compared with the control diet, the daily milk yield increased (p< 0.01) by 31.9%, 52.9%, and 71.6% with TTS, NGH, and BhH diets, respectively. Cows fed BhH had the highest dry matter intake (8.84 kg/d), followed by NGH (8.10 kg/d) and TTS (7.71 kg/d); all of these intakes were greater (p= 0.01) than that of NPH (6.21 kg/d). Nitrogen digestibility increased (p < 0.01) from the NPH diet to TTS (by 27.7%), NGH (21.7%), and BhH (39.5%). The concentration of ruminal ammonia nitrogen was higher for cows fed NGH than other diets (p= 0.01) and positively correlated with plasma urea nitrogen concentration (R-2 = 0.45). Feeding TTS, NGH, and BhH hay as a basal diet changed the nitrogen excretion pathway from urine to feces, which can help protect against environmental pollution. Estimated methane yields per dry matter intake and milk yield were decreased in dairy cows fed BhH, NGH, and TTS diets when compared to cows fed an NPH diet (p< 0.05). In conclusion, feeding of TTS, NGH, and BhH roughages as a basal diet to lactating dairy cows in tropical regions improved nutrient intake and digestibility, milk yield, nitrogen utilization efficiency, and reduced enteric methane emission.

DOI： 10.3390/ani10061021

Web of Science

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：SPRINGER  

Browse species are important sources of forage for livestock in Ethiopia, especially during the dry season, when the quality and quantity of green herbage is limited. However, browse species have anti-nutritional factors, such as polyphenols. This study evaluated the extent to which polyethylene glycol (PEG) can reduce the anti-nutritional effects of polyphenols whose extent is expected to vary depending on the species type and season on the in vitro fermentation of these plant samples. We selected ten browse species commonly used as livestock feed based on their tannin content, and sixty samples of the leaf and twig of these species were collected during the wet and dry seasons. The study was designed as 10 x 2 x 2 factorial arrangement with 10 browse species (Acacia nilotica, Crateva adonsonia, Dombeya torrida, Ekebergia capensis, Ensete ventricosum, Erythrina brucei, Maesa lanceolate, Sesbania sesban, Stereospermum kunthianum, and Terminalia laxiflora), 2 seasons (wet and dry) and 2 states of PEG (with and without PEG). The effects of tannin on the nutritive characteristics were also evaluated by adding PEG as a tannin-binding agent. The chemical composition and in vitro fermentation products of these samples differed significantly (p < 0.001) among browse species. Specifically, total extractable phenol (TEP) ranged from 26.3 to 250.3 g/kg, total extractable tannin (TET) from 22.8 to 210.9 g/kg, and condensed tannin (CT) from 11.1 to 141.3 g/kg, respectively. Season, species, and their interaction have a significant (p < 0.05) effect on the chemical composition and fermentation characteristics of most browse species. The addition of PEG increased gas production (GP), in vitro organic matter digestibility (IVOMD), metabolizable energy (ME) concentration, dry matter degradability (DMD), and volatile fatty acids (VFA), on average, by 76.8%, 47.9%, 42.2%, 21.2%, and 20.2%, respectively. Secondary polyphenols (TEP, TET, CT, and SCT) were significantly (p < 0.001) and negatively correlated with GP, IVOMD, ME, and VFA. Preferable species namely E. ventricosum, S. sesban, M. lanceolata, E. capensis, and A. nilotica were selected for supplementation in terms of their chemical composition, IVOMD, and mitigating effects of PEG on anti-nutritional functions of their secondary compounds. In conclusion, PEG markedly reduced the anti-nutritional effects of polyphenols and improved the in vitro fermentation of browse species harvested in contrasting seasons.

DOI： 10.1007/s11250-019-02126-3

Web of Science

担当区分：筆頭著者,　責任著者   記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：WILEY  

In Gansu Province, a key beef cattle production area in China, feeding systems are changing from grazing to stall-feeding. To reduce production costs, alternative feeding regimens with domestic forages, such as alfalfa hay (AH), are needed. We evaluated the effects of the AH feeding level on nitrogen balance and daily gain (DG) of Simmental calves by two feeding trials. In trial 1, when AH was consumed at 0%-19% of total dry matter intake, no clear effect of AH intake on metabolizable-protein supply and DG was observed. In trial 2, when more concentrate feed was fed than in trial 1, metabolizable-protein supply and nitrogen retention increased as the AH consumption rate increased (0%-38% of total intake); these effects appeared to be related to the DG increase. Our results suggest that AH inclusion in concentrate-based diets increases the metabolizable-protein supply for the optimal DG of growing beef calves.

DOI： 10.1111/grs.12273

Web of Science

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：WILEY  

Dietary manipulation has the potential to mitigate methane (CH4) emission and to maintain or enhance livestock productivity. We conducted two experiments to investigate the effects of replacing oat hay by leguminous forages (alfalfa hay [AH], 0, 8, 16, and 24%, experiment 1; common vetch hay [CVH], 0, 10, 20, and 30%, experiment 2) on energy metabolism of crossbred Simmental cattle. In experiment 1, total volatile fatty acid (VFA) concentrations increased quadratically with increasing AH proportions (p = .006) with a forage-to-concentrate ratio of approximately 50:50, whereas the CH4 energy to gross energy intake ratio (CH4- E:GEI) was significantly lower with 16% AH compared with 24% AH diet (p < .05). In experiment 2, there were no differences in the total VFA concentrations among the four diet groups with a forage-to-concentrate ratio of around 60:40 (p > .05); however, CH4-E:GEI was significantly lower in the 30% CVH diet compared with the 10% CVH diet (p < .05). There was no significant difference in feed conversion efficiency among the four diet groups in each experiment. The results suggest that substituting 16 and 30% oat hay by AH and CVH provide optimal diets with forage-to-concentrate ratios of 50:50 and 60:40, respectively, which may reduce CH4 emission without compromising the feed conversion efficiency of crossbred Simmental cattle.

DOI： 10.1111/asj.13472

Web of Science

Scopus

PubMed

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：MDPI  

Simple Summary: Nitrogen utilization efficiency and enteric methane emission from ruminants remain the primary concerns when developing ruminant feed globally. Nitrogen utilization efficiency is the ratio of retained nitrogen in body tissue to the total nitrogen intake, which is the main factor in the body weight gain of ruminants, and usually range from 15% to 40%. The methane emissions of ruminants are an inevitable by-product when feeds have been fermented in the rumen and represents a 2% to 12% loss of diet energy. The low nitrogen utilization of ruminants can damage air quality and lead to soil nitrification and acidification, whereas high methane emissions from ruminants can increase global warming. Our study investigated the effects of two kinds of legumes (alfalfa and common vetch) with different levels (20% vs. 40%) of total dry matter allowance on body weight gain, nutrient digestibility, nitrogen utilization efficiency, and enteric methane emissions for crossbred Simmental cattle. Our results suggested that nitrogen utilization efficiency and methane emissions are significantly affected by the legume species and proportions. These results could be beneficial for the development of regional or national ruminant feeding systems, thereby improving nitrogen utilization efficiency and reducing methane emissions.Abstract: A low nitrogen utilization efficiency (NUE, the ratio of retained N to N intake) and high methane (CH4) emissions of ruminants can lead to potentially high diet protein wastage and directly contribute to global warming. Diet manipulation is the most effective way to improve NUE or reduce CH4 emissions. This study investigated how replacing oat hay with alfalfa hay (AH) or common vetch hay (CVH) with different proportions (20% (20) and 40% (40) of the total dry matter (DM) allowance) affects the body weight gain (BWG), NUE, and CH4 emissions of crossbred Simmental cattle. The forage dry matter intake (DMI) and the total DMI of cattle fed on a CVH40 diet were significantly higher than the values for those fed on AH20 or AH40 diets (p < 0.05). There were no differences in the BWG for the four treatments observed, however, nutrient digestibility significantly decreased in the AH40 diet as compared with the AH20 diet (p < 0.05). The NUE was significantly lower in AH40 than in CVH20. The CH4 emissions were significantly lower for the CVH40 diet than with the AH20 diet (p < 0.05). Our findings suggest that a 20% AH and 40% CVH substitution for oat hay are the optimal proportions to maintain the BWG, NUE, nutrient digestibility, and reduce the CH4 emissions of crossbred Simmental cattle. Overall, CVH has a greater potential to reduce CH4 emissions than AH.

DOI： 10.3390/ani9110983

Web of Science

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：NIHON UNIV, SCHOOL DENTISTRY  

Diabetes mellitus (DM) with poor glycemic control is often linked to oral manifestations. This study aimed to investigate the association between dental caries (DC) and glycated hemoglobin (HbA1c) among patients with type 2 DM (T2DM). A health center-based cross-sectional study was conducted comprising 91 eligible patients with T2DM (21 males and 70 females) with a mean age (+/- standard deviation) of 61.49 +/- 9.71 years. A structured interview, screening for DM-related factors, and oral examination were performed. Serum HbA1c levels were used as an index for glycemic control. A comparison between patients with controlled T2DM, i.e., HbA1c <= 7.0% (n = 46), and uncontrolled T2DM, i.e., HbA1c >7.0% (n = 45), showed significant differences in mean values of decayed teeth (DT) (P= 0.045); missing teeth (P = 0.002); and decayed, missing, and filled teeth (DMFT) index (P < 0.001). Results of multiple linear regression analysis revealed that the number of DT was significantly correlated with serum HbA1c levels (95% confidence interval [CI] 0.173 to 0.972, P = 0.005). Furthermore, DMFT index values and serum HbA1c levels (95% CI 0.532 to 1.658, P < 0.001) showed a significant association. This study provides substantial evidence on the association between DC indicators and serum HbA1c levels.

DOI： 10.2334/josnusd.18-0156

Web of Science

記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：(公社)日本小児保健協会  

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：TOTTORI UNIV MEDICAL PRESS  

Background The increased prevalence of chronic diseases is a social issue in developing countries.Methods To create a conceptual model representing the quality of life of low-income people with type 2 diabetes in the Philippines, 117 low-income adult participants in a public support group were studied, and the Physical Component Summary (PCS) and Mental Component Summary (MCS) scores on quality of life (QOL) were analyzed in terms of their relationships with the following factors: basic attributes, physical factors (glycated hemoglobin level, complications, comorbidities, and symptoms), social factors (support, education, and financial status), and cognitive factors (knowledge, attitude, self-efficacy, and self-management behavior).Results Based on correlation coefficients among variables and goodness-of-fit test results through a path analysis, 2 models representing causal relationships were created, both of which showed sufficient goodness-of-fit.Conclusion Glycated hemoglobin levels, knowledge of blood glucose levels, self-efficacy, and self-management behavior (exercise) influenced PCS scores, while age, glycated hemoglobin levels, neuropathy, knowledge of insulin, self-efficacy, and self-management behavior (exercise) influenced MCS scores. The influence of self-efficacy was prominent in both cases, providing an important insight for healthcare professionals to develop effective support methods.

DOI： 10.33160/yam.2019.03.008

Web of Science

担当区分：筆頭著者,　責任著者   記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Asian Australasian Association of Animal Production Societies  

Objective: In dryland areas of China, alfalfa hay (AH) is a possible substitute for concentrate feed for beef cattle. To evaluate the potential benefits of this substitution, we studied the effect of the ratio of AH intake to total dry matter (DM) intake on average daily body-weight gain (ADG), dietary energy utilization status, and economic benefit in Gansu province.Methods: In each of two feeding trials in 2016 (trial 1 [T1], July 3 to 17; trial 2 [T2], August 15 to September 23), crossbred male Simmental calves were allocated to low AH (LA), medium AH (MA), and high AH (HA) feeding groups (n = 4 per group). The target ADG was set as 1 kg for both trials. In a one-way-layout design based on conventional feeding practices in the province, calves received diets containing the different AH amounts, with a constant ratio of corn stover: total DM and decreasing rations of concentrate feed proportional to the increase in AH. Calves in T1 received AH at 15% (T1-LA), 23% (T1-MA), or 31% (T1-HA) of their dietary DM allowances; those in T2 received 9% (T2-LA), 24% (T2-MA), or 34% (T2-HA) AH.Results: Among the T1 groups, both ADG and economic benefit were highest in T1-LA; whereas in T2, they were higher in the T2-LA and T2-MA groups than in T2-HA. Energy digestibility did not significantly differ among the groups in either trial. The dietary AH inclusion ratios of 14% in the warm season and 8% to 21% in the cool season appeared to yield optimal ADG, metabolizable energy intake, and economic benefit.Conclusion: Low-level inclusion of AH, ranging from 8% to 21%, is a practical approach for beef cattle feeding. This modified feeding regimen likely will promote increased growth performance during the fattening stage of beef steers in dryland areas of Gansu province, China.

DOI： 10.5713/ajas.18.0089

Web of Science

その他リンク： http://ajas.info/journal/view.php?doi=10.5713/ajas.18.0089

担当区分：筆頭著者,　責任著者   記述言語：英語   掲載種別：学位論文（博士）  

添付ファイル： PhD thesis 20170817.pdf

担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：WILEY  

From August to September 2015 (trial 1 [T1]) and September to November 2015 (trial 2 [T2]), the effects of replacing concentrate feed (C) with alfalfa hay (AH) on the daily gain (DG), dietary energy utilization status and the economic advantage of AH feeding for growing beef cattle were studied in crossbred male Simmental calves (n=18) in Gansu Province, China. The target DG was set as 1kg for both trials. Animals in each trial were allocated to a conventional feeding group (CTRL), a low-level AH feeding group (LA), and a high-level AH feeding group (HA). In a one-way-layout design, they were fed iso-energetic experimental diets comprising harvested corn stover (CS) and C (T1-CTRL, T2-CTRL), diets replacing 22% (T1-LA) or 44% (T1-HA) of the quantity of C for T1-CTRL with AH, and diets replacing 13% (T2-LA) or 25% (T2-HA) of the quantity of C for T2-CTRL with AH. Measurements of feed intake and DG, respiration and metabolism trials were performed for 49 and 41days in T1 and T2, respectively. Average DG did not reach the target value for HA in T1 and CTRL in T2. Energy metabolizability was slightly greater for CTRL than for LA and HA in T1 and significantly greater for CTRL than for the other groups in T2. There was no marked difference in energy metabolizability between LA and HA in both trials. Dietary substituting AH for C did not impair the feed intake of the animals, but it did not improve feed efficiency. In terms of economic feasibility, low-level AH inclusion in the diets of growing beef cattle appeared more profitable at the 1-kg DG level as compared with CTRL and high-level AH inclusion, and should be practiced in the drylands of Gansu Province, China.

添付ファイル： 出版原稿 for journal paper 1 201710（ページ入り）.pdf

DOI： 10.1111/grs.12169

Web of Science