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Effects of palm oil, canola oil, and rice bran oil on growth performance, blood biochemistry, and intestinal morphology in young chicks 棕榈油、菜籽油和米糠油对雏鸡生长性能、血液生化和肠道形态的影响
IF 2 3区 农林科学 Q2 AGRICULTURE, DAIRY & ANIMAL SCIENCE Pub Date : 2025-12-01 Epub Date: 2025-08-17 DOI: 10.1016/j.japr.2025.100593
Mahmoud M. Azzam , Abdulaziz A. Alabdullatif , Rashed A. Alhotan , Mohammed A. Al-Badwi , Musab E. Akasha , Xinyang Dong , Shaaban S. Elnesr , Zeinab Shouman
A total of 216 Ross 308 broiler chicks were randomly allocated to a 3 × 2 factorial arrangement, consisting of three dietary treatments (palm oil [PO], canola oil [CO], and rice bran oil [RBO], each at 40 g/kg) and two sexes (male and female). Each dietary treatment was replicated 6 times per sex (six male and six female replicates), resulting in a total of 12 replicates per treatment, with 6 birds per replicate. Results showed that different oil sources had no significant effect (P > 0.05) on body weight, weight gain (WG), feed intake, and feed conversion ratio (FCR). The effects of dietary oil sources on duodenal morphology in broiler chickens revealed several significant outcomes. In males, feeding CO tended to increase villus height, and significantly reduced crypt depth, resulting in a higher (P < 0.001) VH/CP ratio compared to PO and RBO. In females, feeding RBO produced the most favourable morphology, with the highest villus height, lowest crypt depth, and greatest VH/CP ratio among treatments (P < 0.001). While dietary oil sources did not significantly affect the relative weights of internal organs, a significant effect (P = 0.01) of sex was observed, with female broiler chickens having greater gizzard weights than males. Feeding RBO increased liver redness and crude protein content (P = 0.01 and P < 0.001, respectively). Females showed higher redness (P = 0.002), while males tended to have greater protein levels (P = 0.06). Serum alanine aminotransferase (ALT), aspartate aminotransferase (AST), alkaline phosphatase (ALP), and lactate dehydrogenase (LDH) levels were not significantly affected (P > 0.05) by sex, oil source, or their interaction. In conclusion, dietary inclusion of PO, CO, or RBO resulted in comparable growth performance in broiler chickens, with no significant differences detected. However, the type of oil may still impact specific physiological aspects, especially duodenal morphology and liver composition and quality. Further studies are needed to confirm these findings across breeds and environments.
试验选用216只罗斯308肉鸡,随机分为3组,分别饲喂40 g/kg的棕榈油、菜籽油和米糠油,雌雄对照。每个饲粮处理每性别重复6次(6个雄性和6个雌性重复),每个处理共12个重复,每个重复6只鸡。结果表明,不同油源对肉鸡体重、增重、采食量和饲料系数均无显著影响(P > 0.05)。饲粮油源对肉鸡十二指肠形态的影响有几个显著的结果。在雄性中,饲喂CO会增加绒毛高度,显著降低隐窝深度,导致VH/CP比(P < 0.001)高于PO和RBO。在雌性中,喂食RBO产生了最有利的形态,绒毛高度最高,隐窝深度最低,VH/CP比最高(P < 0.001)。饲粮油源对内脏相对重量的影响不显著,但性别对内脏相对重量的影响极显著(P = 0.01),雌性肉鸡的砂囊重量大于雄性。饲喂RBO可显著提高肝脏红度和粗蛋白质含量(P = 0.01和P <; 0.001)。女性表现出更高的红度(P = 0.002),而男性往往具有更高的蛋白质水平(P = 0.06)。血清丙氨酸转氨酶(ALT)、天冬氨酸转氨酶(AST)、碱性磷酸酶(ALP)和乳酸脱氢酶(LDH)水平不受性别、油源及其相互作用的显著影响(P > 0.05)。综上所述,饲粮中添加PO、CO或RBO对肉鸡的生长性能影响相当,且无显著差异。然而,油的类型仍然可能影响特定的生理方面,特别是十二指肠形态和肝脏组成和质量。需要进一步的研究来证实这些跨品种和环境的发现。
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引用次数: 0
Additional isoleucine without valine in an imbalanced branched-chain amino acid diet further exacerbates its negative effects in broilers 在不平衡的支链氨基酸饲粮中添加不含缬氨酸的异亮氨酸进一步加剧了其对肉鸡的负面影响
IF 2 3区 农林科学 Q2 AGRICULTURE, DAIRY & ANIMAL SCIENCE Pub Date : 2025-12-01 Epub Date: 2025-10-28 DOI: 10.1016/j.japr.2025.100631
Doyun Goo , Janghan Choi , Jihwan Lee , Milan K. Sharma , Deependra Paneru , Hamid R. Rafieian-Naeini , Hong Zhuang , Byungwhi Kong , Brian Bowker , Casey W. Ritz , Woo K. Kim
High leucine levels and an imbalanced branched-chain amino acid (BCAA) ratio in the diet can trigger BCAA antagonism, negatively affecting chicken growth. The current study investigated how additional valine and isoleucine could mitigate the negative effects of imbalanced BCAA diets in broilers. The control and additional isoleucine groups experienced significantly decreased body weight gain (BWG) and feed efficiency compared to the additional valine and valine with isoleucine groups (P < 0.001). The additional isoleucine group significantly reduced BWG and feed intake (FI) compared to the control group (P < 0.001). The additional isoleucine group had the lowest carcass weight, breast muscle weight, lean and fat weights, bone mineral density and content, tight junction-related gene expression levels, and villus height values among the groups (P < 0.05). The additional isoleucine group had the highest levels of breast muscle BCAA catabolism-related enzyme and gene expression among the groups (P < 0.05). However, the gene expression levels in breast muscle decreased when valine and isoleucine were provided together. In conclusion, adding isoleucine alone to a BCAA-imbalanced diet can further exacerbate the negative effects of BCAA antagonism and deficiency, impairing growth performance unless additional valine is also provided.
饲粮中高亮氨酸水平和不平衡的支链氨基酸(BCAA)比例会引发BCAA拮抗作用,对鸡的生长产生负面影响。本研究旨在探讨额外添加缬氨酸和异亮氨酸如何减轻肉仔鸡BCAA饲粮不平衡的负面影响。与添加缬氨酸组和添加异亮氨酸组相比,对照组和添加异亮氨酸组的增重(BWG)和饲料效率显著降低(P < 0.001)。与对照组相比,添加异亮氨酸组显著降低了体增重和采食量(P < 0.001)。添加异亮氨酸组胴体重、胸肌重、瘦肉重和脂肪重、骨密度和含量、紧密连接相关基因表达水平和绒毛高度值在各组中最低(P < 0.05)。添加异亮氨酸组胸肌BCAA分解代谢相关酶和基因表达水平在各组中最高(P < 0.05)。然而,当缬氨酸和异亮氨酸同时提供时,乳房肌肉中的基因表达水平降低。综上所述,在BCAA不平衡的饮食中单独添加异亮氨酸会进一步加剧BCAA拮抗和缺乏的负面影响,损害生长性能,除非另外提供缬氨酸。
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引用次数: 0
Relative bioavailability of 25-hydroxyvitamin D3 compared to vitamin D3 for laying performance and egg quality in laying hens from 41 to 48 weeks of age 25-羟基维生素D3与维生素D3相对生物利用度对41 ~ 48周龄蛋鸡产蛋性能和蛋品质的影响
IF 2 3区 农林科学 Q2 AGRICULTURE, DAIRY & ANIMAL SCIENCE Pub Date : 2025-12-01 Epub Date: 2025-08-06 DOI: 10.1016/j.japr.2025.100589
Dongdong Li , Xuemei Ding , Qiufeng Zeng , Shiping Bai , Jianping Wang , Li Lv , Huanwei Peng , Yue Xuan , Jindang Cao , Keying Zhang
Currently, the primary supplemental forms of vitamin D (VD) for laying hens’ diets are traditional Vitamin D3 (VD3) and its intermediate metabolite, 25-hydroxyvitamin D3 (25-OHD). However, the application effect of 25-OHD in laying hens has always been subject to some controversy. The objective of this study was to evaluate the relative bioavailability of 25-OHD compared to VD3 in terms of laying performance and egg quality for laying hens from 41 to 48 wk of age. A total of 936 thirty-six-wk-old Roman pink-shell laying hens were fed a basic diet without any additional VD for 5 wk (from wk 36 to 40). Subsequently, A total of 768 hens were selected and randomly assigned to 16 dietary treatments for 8 wk (from wk 41 to 58), including a 0 IU/kg VD control group and groups supplemented with 75, 150, 225, 300, 1600 IU/kg of VD3, 25-OHD-1 (provided by DSM Ltd.), or 25-OHD-2 (provided by Shandong Haineng Bioengineering Co., Ltd.). The results indicated that increasing VD levels significantly improved the hen day laying rate (HDLR), hen-housed laying rate (HHLR), qualified egg rate, egg weight (EW) and ADFI during wk 45–48 (P < 0.05), and significantly reduced FCR during wk 45–48 (P < 0.05). Compared with VD3 group, the HDLR and HHLR during wk 45–48 in 25-OHD-1 and 25-OHD-2 group were increased significantly (P < 0.05), and the FCR during wk 45–48 was decreased significantly (P < 0.05). Otherwise, compared with VD 75 IU/kg, the increase of VD level significantly increased the eggshell strength, eggshell thickness and relative weight of eggshell at 44 and 48 wk of age (P < 0.05). The yolk relative weight at 48 wk of age in the VD 75 IU/kg group was significantly higher than that in other groups (P < 0.05). The eggshell strength and relative weight of eggshell at 44 wk of age in the 25-OHD-1 and 25-OHD-2 group were higher (P < 0.05) than those in the VD3 group. Compared with control group, dietary supplementation with VD improved tibia strength and reduced tibia P content (P < 0.05). The tibia strength in the 25-OHD-2 group was the best among three VD source groups (P < 0.05). Taking VD3 as 100%, 25-OHD-1 and 25-OHD-2 had relative biological values of 137.6–182.6% and 135.9–195.9% for laying performance, and 108–254.4% and 93–323.5% for eggshell quality, respectively. Overall, the 25-OHD-1 and 25-OHD-2 was approximately 1.6–1.9 times as effective as VD3 for laying performance and egg quality. The bioavailability of 25-OHD-1 and 25-OHD-2 was no different.
目前,蛋鸡饲粮中维生素D (VD)的主要补充形式是传统的维生素D3 (VD3)及其中间代谢产物25-羟基维生素D3 (25-OHD)。然而,25-OHD在蛋鸡中的应用效果一直存在争议。本研究的目的是评估25-OHD与VD3在41 ~ 48周龄蛋鸡产蛋性能和蛋品质方面的相对生物利用度。试验选取936只36周龄罗马粉壳蛋鸡饲喂基础饲粮,不添加任何额外的VD,饲喂5周(第36 ~ 40周)。选取768只蛋鸡,随机分为16个饲粮处理,分别为0 IU/kg VD对照组和添加75、150、225、300、1600 IU/kg VD3、25-OHD-1(帝司有限公司提供)和25-OHD-2(山东海能生物工程有限公司提供)组,试验期8周。结果表明,增加VD水平可显著提高45-48周母鸡日产蛋率、母鸡舍产蛋率、合格蛋率、蛋重和ADFI (P <;45-48周FCR显著降低(P <;0.05)。与VD3组比较,25-OHD-1和25-OHD-2组患者45-48周HDLR和hlr显著升高(P <;45 ~ 48周FCR显著降低(P <;0.05)。另外,与VD 75 IU/kg相比,VD水平的提高显著提高了44和48周龄蛋壳强度、蛋壳厚度和蛋壳相对重量(P <;0.05)。75 IU/kg VD组48周龄蛋黄相对重显著高于其他各组(P <;0.05)。25-OHD-1和25-OHD-2组44周龄蛋壳强度和蛋壳相对重量较高(P <;0.05),高于VD3组。与对照组相比,饲粮中添加VD可提高胫骨强度,降低胫骨P含量(P <;0.05)。在3个VD源组中,25-OHD-2组胫骨强度最好(P <;0.05)。当VD3为100%时,25-OHD-1和25-OHD-2对产蛋性能的相对生物学值分别为137.6% ~ 182.6%和135.9 ~ 195.9%,对蛋壳品质的相对生物学值分别为108 ~ 254.4%和93 ~ 323.5%。总体而言,25-OHD-1和25-OHD-2对产蛋性能和蛋品质的影响约为VD3的1.6-1.9倍。25-OHD-1和25-OHD-2的生物利用度无差异。
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引用次数: 0
Evaluation of sodium bisulfate on performance parameters of turkeys that received a double-dose of a coccidia vaccine 硫酸氢钠对接受双剂量球虫疫苗的火鸡性能参数的评价
IF 2 3区 农林科学 Q2 AGRICULTURE, DAIRY & ANIMAL SCIENCE Pub Date : 2025-12-01 Epub Date: 2025-08-09 DOI: 10.1016/j.japr.2025.100592
Katherine L. Cupo , Zohreh Mehdipour , Catherine Fudge , Kelli Jones , Robert B. Beckstead , Julianna C. Jespersen , Juan C. Suarez , Chongxiao Chen
Commercial turkeys are commonly exposed to coccidia during rearing, and feed additives are being investigated to help mitigate losses associated with infection. This study investigated the effects of dietary supplementation of sodium bisulfate (SBS) on growth performance of turkeys given a 2 × dose of coccidia vaccine. A 2 × 3 factorial design was implemented with a 2 × coccidia vaccine (IMMUCOX®T) gavaged at d 0 (challenged or non-challenged) and dietary supplementation of 0 % (control), 0.2 %, or 0.4 % feed-grade SBS. Oocyst shedding was evaluated on d 7 and 14 to confirm parasite cycling and vaccine viability. Body weight (BW), feed intake, and feed conversion ratio (FCR) were evaluated at d 0, 35, and 56. Body weight uniformity was evaluated at d 56, and livability ( %) was evaluated for the overall trial. The results indicated that challenged birds had reduced growth performance at d 35 but recovered similarly to the non-challenged groups by d 56. Challenged birds with 0.4 % SBS achieved higher BW than other challenged treatments and were numerically similar to non-challenged treatments at d 35. Birds provided SBS had improved FCR overall compared with birds given control diet, regardless of challenge status. Livability (%) and BW uniformity were similar between all treatments at d 56. Oocyst shedding in challenged treatments was similar on d 7 and numerically lower in challenged treatments provided SBS treatments on d 14. These results collectively indicate that the dietary inclusion of up to 0.4 % SBS for turkeys can improve growth performance, specifically FCR, regardless of coccidia challenge status.
商业火鸡在饲养过程中通常会接触球虫,目前正在研究饲料添加剂,以帮助减轻与感染相关的损失。本试验研究了饲料中添加硫酸氢钠(SBS)对接种2倍剂量球虫疫苗的火鸡生长性能的影响。采用2 × 3因子设计,接种2 ×球虫疫苗(IMMUCOX®T)于第0天灌胃(攻毒或未攻毒),并在饲料中添加0%(对照组)、0.2%或0.4%的饲料级SBS。在第7天和第14天评估卵囊脱落,以确认寄生虫循环和疫苗活力。分别于第0、35和56天测定仔猪体重、采食量和饲料系数。在第56天评估体重均匀性,并评估整个试验的宜居性(%)。结果表明,攻毒组的生长性能在第35天下降,但在第56天恢复与未攻毒组相似。在第35天,SBS含量为0.4%的攻毒鸟的体重高于其他攻毒处理,在数值上与未攻毒处理相似。与对照组相比,提供SBS的鸟类总体上提高了FCR,无论挑战状态如何。56 d时,所有处理之间的宜居性(%)和体重均匀性相似。在第7天,激射组的卵囊脱落量相似,在第14天,提供SBS的激射组的卵囊脱落量较低。这些结果共同表明,无论球虫攻毒状态如何,饲粮中添加高达0.4%的SBS都能提高火鸡的生长性能,特别是饲料转化率。
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引用次数: 0
Evaluation of Bacillus-based direct fed microbials on the performance and eggshell quality of first cycle laying hens from 55 to 75 weeks of age 芽孢杆菌直接投喂微生物对55 ~ 75周龄第一周期蛋鸡生产性能和蛋壳品质的影响
IF 2 3区 农林科学 Q2 AGRICULTURE, DAIRY & ANIMAL SCIENCE Pub Date : 2025-12-01 Epub Date: 2025-10-02 DOI: 10.1016/j.japr.2025.100610
A.M. Lyons , B.P. Dirks , H. Leyva-Jimenez , M.E. Persia
An experiment was conducted to determine the effects of various direct fed microbials (DFM) on 55-75 wk old laying hens on hen performance, egg quality, and hen abdominal fat pad weights. A total of 144 Hy-Line W-36 laying hens were fed experimental diets with no DFM (NC), Novela® ECL (ECL), Novela® (NOV), or Amnil® (AMN). No differences in hen day egg production were noted, but the inclusion of ECL resulted in the highest egg weight (EW), followed by AMN then NOV and the NC as the lowest (P ≤ 0.01). The increased EW of the ECL and AMN treated birds increased egg mass (P ≤ 0.01) and resulted in a 7- and 9-point improvement in FCR, respectively (P ≤ 0.01). Both the ECL and AMN increased egg production energy compared to the NC and NOV treated hens (P ≤ 0.05). Body weights increased in birds fed NOV (P ≤ 0.01), in comparison to the other treatments and the NC. Hens fed NOV resulted in a 26 % increase in abdominal fat pad weight compared to the NC and other treatments (P = 0.01). All DFM treatments were able to alter energy use as ECL and AMN improved FCR and increased egg production energy while NOV increased energy storage within the body.
本试验旨在研究55 ~ 75周龄蛋鸡饲粮中直接饲喂不同微生物制剂(DFM)对母鸡生产性能、蛋品质和腹部脂肪垫重的影响。试验选用144只海兰W-36蛋鸡,分别饲喂不添加DFM (NC)、Novela®ECL (ECL)、Novela®(NOV)和Amnil®(AMN)的试验饲粮。蛋鸡日产蛋量无显著差异,但添加ECL的蛋重(EW)最高,AMN次之,NOV和NC最低(P≤0.01)。ECL和AMN处理的蛋鸡EW增加,蛋蛋质量增加(P≤0.01),FCR分别提高7个和9个点(P≤0.01)。与NC和NOV处理相比,ECL和AMN均提高了母鸡的产蛋能(P≤0.05)。与其他处理和NC相比,NOV饲粮的体重显著增加(P≤0.01)。饲喂NOV的蛋鸡腹部脂肪垫重比饲喂NC和其他处理增加26% (P = 0.01)。所有DFM处理都能改变能量利用,ECL和AMN提高了FCR,增加了产蛋能量,而NOV增加了体内能量储存。
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引用次数: 0
Characterization of water intake and water conversion ratio for male and female broilers from four commercial broiler lines reared to eight weeks of age 饲养至8周龄的4个商品肉鸡品系雄性和雌性肉鸡的摄水量和水分转化率
IF 2 3区 农林科学 Q2 AGRICULTURE, DAIRY & ANIMAL SCIENCE Pub Date : 2025-12-01 Epub Date: 2025-08-05 DOI: 10.1016/j.japr.2025.100587
J.Z. Hiltz , C.W. Maynard , T.W. Tabler, M.A. Maqueda, K.M. Shafer, K.B. Nelson, M.T. Kidd, N.B. Anthony, S.K. Orlowski-Workman
Increased interest and investigation into the sustainability of broiler production has led to a need for reliable and repeatable means to measure water intake and its conversion rate into salable meat. Therefore, a study was conducted to characterize the water intake and water conversion ratio (WCR) of male and female broilers from four modern broiler strains. Two of these lines represented fast growing broiler strains (FGB A and FGB B) targeting a small bird market and two represented high yielding broiler strains (HYB A and HYB B). Three replicates of 25 sexed broilers from each line were placed into 24 experimental pens and reared for an 8-week period. Broiler BW, feed intake, and water intake were monitored weekly and used to calculate feed conversion ratio (FCR) and WCR. Broilers were processed at 6 and 8 weeks of age for determination of carcass traits. Male broilers had higher water intakes throughout the experimental period. Strain significantly influenced broiler water intake and WCR throughout the experimental period, but these differences did not appear to be linked to broiler product type (i.e., fast growing or high yielding). Interactions between strain and sex were observed for water intake starting at week 4 and continuing through week 7. No interactions between strain and sex were observed for WCR. Water intake data and WCR reported herein serve to allow for baseline values derived from broilers serving the 2 major sectors of the broiler industry in literature and for future research.
对肉鸡生产可持续性的兴趣和调查的增加导致需要可靠和可重复的方法来测量水分摄入量及其转化为可销售肉的速度。为此,对4个现代肉鸡品系的雄性和雌性肉仔鸡采食量和水分转化率进行了研究。其中2个品系代表瞄准小型鸟类市场的快速生长肉鸡品系(FGB A和FGB B), 2个品系代表高产肉鸡品系(HYB A和HYB)。选取3个重复,每个品系25只肉鸡,放入24个试验栏中,饲养8周。每周监测肉仔鸡体重、采食量和采水量,计算料重比和体重比。分别在6周龄和8周龄对肉鸡进行加工,测定胴体性状。在整个试验期间,雄性肉鸡的饮水量均较高。在整个试验期间,菌株显著影响了肉仔鸡的采水量和体重比,但这些差异似乎与肉仔鸡的产品类型(即快速生长或高产)无关。从第4周开始,一直持续到第7周,观察品系和性别在饮水量方面的相互作用。品系和性别之间没有相互作用。本文报告的采食量数据和WCR可用于参考文献和未来研究中为肉鸡行业的两个主要部门提供的肉鸡基线值。
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引用次数: 0
Evaluation of Enogen® corn as a replacement for conventional corn in standard and energy-deficient diets for pullets Enogen®玉米在标准日粮和能量缺乏日粮中替代常规玉米的评价
IF 1.6 3区 农林科学 Q2 AGRICULTURE, DAIRY & ANIMAL SCIENCE Pub Date : 2025-12-01 Epub Date: 2025-07-08 DOI: 10.1016/j.japr.2025.100578
Deependra Paneru , Dima L. White , Milan K. Sharma , John M. Gonzalez , Woo K. Kim
This study evaluated the effects of substituting conventional corn with Enogen® corn in standard and energy-restricted diets on pullet growth performance, body composition, bone health, and intestinal morphology across major pullet developmental phases. Birds were fed conventional corn or Enogen® corn (expressing thermostable α-amylase enzyme endogenously) based diets, with or without a 200 kcal/kg energy reduction. The aim of this study was to evaluate whether, and if so, how, these dietary modifications influence physiological adaptation and energy partitioning during critical growth phases in pullets. Pullets showed compensatory feeding behavior under energy-restricted diets by increasing feed intake to maintain body weight and growth rates. Enogen® corn substitution did not significantly improve growth performance under ad libitum feeding conditions; however, numerical trend toward improved feed efficiency was observed. Body composition, including fat and muscle percentages, remained stable across all diets, suggesting effective metabolic homeostasis. Bone mineralization and microarchitecture were unaffected by dietary treatments, suggesting the adequacy of dietary minerals in supporting skeletal development. Similarly, intestinal structure showed no morphological changes, indicating that balanced protein, amino acids, and minerals supported gut integrity without necessitating compensatory remodeling. These results emphasize the resilience of pullets to moderate dietary variations when fundamental nutritional requirements are met. While the benefits of Enogen® corn in standard feeding regimens were inconclusive, its potential under energy-restricted and challenge conditions warrants further research.
本研究评估了在标准饲粮和能量限制饲粮中用Enogen®玉米替代传统玉米对雏鸡生长性能、体成分、骨骼健康和主要发育阶段肠道形态的影响。饲喂常规玉米或Enogen®玉米(内源性表达耐热α-淀粉酶)为基础的饲粮,分别减少或不减少200 kcal/kg能量。本研究的目的是评估这些饮食改变是否,如果是,如何影响雏鸡在关键生长阶段的生理适应和能量分配。在限能饲粮条件下,雏鸡表现出通过增加采食量来维持体重和生长速度的代偿性摄食行为。在自由采食条件下,Enogen®玉米替代对生长性能没有显著改善;然而,观察到饲料效率提高的数值趋势。身体组成,包括脂肪和肌肉百分比,在所有饮食中保持稳定,表明有效的代谢稳态。骨矿化和微结构不受饮食治疗的影响,这表明饮食中矿物质的充足性支持骨骼发育。同样,肠道结构没有形态学变化,表明平衡的蛋白质、氨基酸和矿物质支持肠道完整性,而不需要代偿性重塑。这些结果强调了在基本营养需求得到满足的情况下,雏鸡对适度膳食变化的适应能力。虽然Enogen®玉米在标准喂养方案中的益处尚不确定,但其在能量限制和挑战条件下的潜力值得进一步研究。
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引用次数: 0
Non-phytate phosphorous requirements of egg laying pullets from 9 to 12 weeks of age and carryover effects of phosphorous deficiency at 18 weeks of age 9 ~ 12周龄产蛋鸡对非植酸磷的需求及18周龄缺磷的遗留效应
IF 2 3区 农林科学 Q2 AGRICULTURE, DAIRY & ANIMAL SCIENCE Pub Date : 2025-12-01 Epub Date: 2025-10-14 DOI: 10.1016/j.japr.2025.100620
J.A. Blair , V. Souza Pais , M.E. Persia
The non-phytate phosphorous (nPP) requirement of 9 to 12-week-old laying hen pullets was investigated using body weight gain (BWG), mortality corrected feed conversion ratio (FCRm), tibia ash percent (TAP) and tibia ash weight (TAW). The same pullets were transferred back to a standard diet and monitored for longer-term responses to the reduced nPP feeding over 9 to 12 weeks at 18 weeks of age. A total of 672 9-wk-old Hy-Line W36 laying hen pullets were distributed across 42 cages and randomly assigned one of seven dietary treatments (0.13, 0.16, 0.20, 0.23, 0.26, 0.29, and 0.32% nPP, and 0.90% calcium). At 12 wk of age 3 pullets per pen were euthanized for fat-free tibia ash determination. Data were analyzed using ANOVA in JMP Pro 16.0 (P ≤ 0.05). If significant differences were noted, single-slope broken line regression analysis was completed for BWG, FCRm, TAP and TAW. Only TAW responded to low nPP feeding generating a nPP requirement for 9 to 12 wk old laying hen pullets of 0.18% nPP. Body weight, FCRm and TAP were all unaffected by low nPP feeding. Remaining pullets from the 0.13, 0.16, 0.20 and 0.32% nPP treatments were maintained in their respective cages and phase- fed common corn-soybean meal diets from 12 to 18 wk of age. There were no carryover effects of feeding low phosphorous diets on pullet body weight or tibia ash at 18 wk. These data indicate that the nPP requirement for pullets from 9 to 12 wk of age is lower than current commercial recommendations based directly on TAW and indirectly by a lack of response to BWG, FCRm and TAP and pullets provided adequate nPP diets after a nPP deficiency from 9 to 12 wk were able to recover by 18 wk of age.
采用增重(BWG)、死亡率校正饲料系数(FCRm)、胫骨灰分率(TAP)和胫骨灰分重(TAW)研究了9 ~ 12周龄蛋鸡对非植酸磷(nPP)的需要量。在18周龄时,将相同的雏鸡转移回标准饮食,并在9至12周内监测对减少nPP喂养的长期反应。试验选用672只9周龄海兰W36蛋鸡,分布在42个笼中,随机分配7种饲粮处理(0.13、0.16、0.20、0.23、0.26、0.29和0.32% nPP和0.90%钙)。12周龄时,每圈处死3只幼崽,测定无脂肪胫骨灰分。数据分析采用JMP Pro 16.0的方差分析(P≤0.05)。若发现差异显著,则对BWG、FCRm、TAP和TAW进行单斜率折线回归分析。只有TAW对低净磷饲喂有响应,9 ~ 12周龄蛋鸡净磷需用量为0.18%。体重、FCRm和TAP均不受低nPP饲喂的影响。将0.13、0.16、0.20和0.32% nPP处理的剩余雏鸡饲养在各自的笼中,12 ~ 18周龄分期饲喂普通玉米-豆粕饲粮。饲喂低磷饲粮对18周龄雏鸡体重和胫骨灰分均无传递效应。这些数据表明,雏鸡9 - 12周龄的nPP需取量低于目前商业推荐的直接基于TAW的nPP需取量,也低于对BWG、FCRm和TAP缺乏反应的nPP需取量;雏鸡在9 - 12周龄缺乏nPP的情况下,提供足够的nPP日粮能够在18周龄恢复。
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引用次数: 0
Effect of eggshell calcium acetate on postmortem proteolysis and tenderization of spent duck muscle 蛋壳醋酸钙对鸭废肌死后蛋白水解及嫩化的影响
IF 2 3区 农林科学 Q2 AGRICULTURE, DAIRY & ANIMAL SCIENCE Pub Date : 2025-12-01 Epub Date: 2025-07-16 DOI: 10.1016/j.japr.2025.100574
Ya-Shiou Chang
The purpose of this study was to investigate the effect of eggshell calcium acetate on postmortem proteolysis and tenderization of Tsaiya duck muscle. Duck carcasses were obtained from a government-regulated slaughterhouse and chilled at 12 °C for 1 h. Both sides of the breast muscles were excised and incubated individually in either eggshell calcium acetate solution containing 30 mM Ca2+ (ECA, N = 15), 30 mM calcium acetate (ACA, N = 15), or 30 mM EDTA (EDTA, N = 15) at 5 °C for 3 days. The control group (CON, N = 15) was incubated in double-distillated water at 5 °C for 3 days. Breast muscle samples from the right side of each carcass were taken at 0 (1 h postmortem), 1, 2, and 3 days of incubation for pH determination, casein zymography, and Western blotting. Samples from the left side of each breast were taken for myofibrillar fragmentation index (MFI) and shear force measurements at 1 and 3 days of incubation. The results showed that the decrease in calpain-1 and calpain-11 activities, and desmin content was more rapid in the ECA- and ACA-incubated samples compared to the CON and EDTA-incubated samples during the 3-day incubation period. On the other hand, the MFI increased significantly in the ECA- and ACA-incubated samples compared to the CON and EDTA-incubated samples, while shear force values decreased more in the ECA- and ACA-incubated samples than in the CON and EDTA-incubated samples. Our results suggest that eggshell calcium acetate, like calcium acetate, can effectively enhance postmortem proteolysis and tenderizing of spent duck breast muscles.
本试验旨在研究蛋壳醋酸钙对柴鸭死后蛋白水解和肉嫩化的影响。从政府监管的屠宰场获得鸭尸体,在12°C冷藏1小时。切除乳房两侧肌肉,分别在含有30 mM Ca2+ (ECA, N = 15), 30 mM醋酸钙(ACA, N = 15)或30 mM EDTA (EDTA, N = 15)的蛋壳醋酸钙溶液中孵育,在5°C下孵育3天。对照组(CON, N = 15)在5℃双蒸馏水中孵育3 d。在孵育0(死后1小时)、1、2和3天分别从每具胴体右侧采集胸肌样本,进行pH测定、酪蛋白酶谱分析和Western blot检测。在孵育第1天和第3天分别从每个乳房左侧采集样本,测定肌纤维断裂指数(MFI)和剪切力。结果表明,与CON和edta孵育3 d的样品相比,ECA和aca孵育的样品中calpain-1和calpain-11活性以及desmin含量的下降速度更快。另一方面,与CON和edta孵育的样品相比,ECA和aca孵育的样品的MFI显著增加,而ECA和aca孵育的样品的剪切力值比CON和edta孵育的样品下降得更多。结果表明,蛋壳醋酸钙与醋酸钙一样,能有效促进鸭废胸肌的死后蛋白水解和嫩化。
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引用次数: 0
Applied research note: Impact of tapioca flour as a substitute for salt and sodium tripolyphosphate on cooking loss and sensory traits in chicken breast patties 应用研究说明:木薯粉替代盐和三聚磷酸钠对鸡胸肉饼蒸煮损失和感官性状的影响
IF 2 3区 农林科学 Q2 AGRICULTURE, DAIRY & ANIMAL SCIENCE Pub Date : 2025-12-01 Epub Date: 2025-09-16 DOI: 10.1016/j.japr.2025.100604
Janghan Choi, Debolina Chatterjee, Majid Shakeri, Byungwhi Kong, Hong Zhuang, Brian Bowker
Diverse ingredients including salt and phosphate are frequently added to ground chicken meat. Salt (sodium chloride) and sodium tripolyphosphate (STPP) are traditionally used for their roles in flavor enhancement, water retention, and texture improvement. However, high concentrations of these additives raise health concerns due to their sodium content. This study is the first to systematically evaluate the physicochemical and sensory effects of fully or partially replacing high concentrations of salt (0.75 %) and sodium tripolyphosphate (0.45 %) with 2 % tapioca flour in chicken breast patties through a two-part experimental design. In Study 1, the addition of TF alone with low salt (0.38 %) was compared to the inclusion of high salt in chicken patties. In Study 2, the addition of TF in contrast to the addition of STPP alone or with 0.75 % salt in chicken patties was evaluated. The TF alone or with 0.38 % salt or addition of 0.75 % salt alone reduced cooking loss compared to ingredient-free chicken patties. The inclusion of TF alone or with 0.38 % salt decreased cohesiveness and hardness in chicken patties compared to ingredient-free patties and patties with TF and 0.75 % salt. The addition of TF showed similar effects in reducing cooking loss as the addition of 0.75 % salt with 0.45 % STPP. The addition of TF reduced hardness and springiness compared to the inclusion of 0.45 % STPP. Although the addition of STPP increased grittiness, the addition of TF did not affect grittiness. In conclusion, from the perspectives of cooking loss and sensory traits, TF alone or with 0.38 % salt can replace 0.75 % salt, and TF alone can also substitute for 0.45 % STPP, either alone or combined with 0.75 % salt, in chicken breast patties. The current study demonstrates that 2 % TF could be a good alternative in replacing 0.75 % salt and/or 0.45 % STPP for ground chicken breast products in marketplaces.
包括盐和磷酸盐在内的各种成分经常被添加到碎鸡肉中。盐(氯化钠)和三聚磷酸钠(STPP)传统上用于增强风味,保水和改善质地。然而,高浓度的这些添加剂由于其钠含量而引起健康问题。本研究首次通过两部分实验设计,系统地评估了用2%木薯粉完全或部分替代鸡胸肉饼中的高浓度盐(0.75%)和三聚磷酸钠(0.45%)的理化和感官效应。在研究1中,将鸡肉饼中单独添加低盐(0.38%)的TF与添加高盐的TF进行比较。在研究2中,比较了鸡肉饼中添加TF与单独添加STPP或添加0.75%盐的效果。与无配料鸡肉馅饼相比,单独添加TF或添加0.38%的盐或单独添加0.75%的盐可减少烹饪损失。与无配料肉饼和含0.75%盐的肉饼相比,单独添加TF或添加0.38%盐降低了肉饼的黏结性和硬度。添加TF与添加0.75%的盐和0.45%的STPP在减少蒸煮损失方面效果相似。与添加0.45%的STPP相比,添加TF降低了硬度和弹性。虽然STPP的加入增加了砂性,但TF的加入对砂性没有影响。综上所述,从蒸煮损失和感官性状的角度来看,鸡胸肉饼中单独使用TF或添加0.38%盐均可替代0.75%盐,单独使用TF或与0.75%盐联合使用TF均可替代0.45% STPP。目前的研究表明,在市场上,2%的TF可以很好地替代0.75%的盐和/或0.45%的STPP用于碎鸡胸肉产品。
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引用次数: 0
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Journal of Applied Poultry Research
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