新型干酪蛋白酶提高肉鸡对豆粕和菜籽粕的氨基酸消化率

IF 1.6 3区 农林科学 Q2 AGRICULTURE, DAIRY & ANIMAL SCIENCE British Poultry Science Pub Date : 2024-04-01 Epub Date: 2024-01-24 DOI:10.1080/00071668.2023.2295348
H Liu, S Wang, J-O Sorbara, M Umar-Faruk, A J Cowieson
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引用次数: 0

摘要

1.我们进行了两项实验,以探讨外源干扰蛋白酶对肉鸡大豆粉(SBM)和菜籽粕(RSM)表观回肠营养消化率的影响。在每个实验中,总共饲喂了 256 只 16 日龄的雄性 Cobb 500 肉鸡,从四种半纯化实验日粮中选择一种,这四种日粮包括两种不同批次(A 和 B)的 SBM(Exp.1)或 RSM(Exp.2)样品,不含或含外源铁蛋白酶(0 或 30,000 NFP/kg)。每种试验日粮饲喂 8 个重复栏的 16 至 21 日龄肉鸡(每笼 8 只鸡),收集回肠消化物以测量消化率系数。 在试验 1 中,RSM 源和阿魏酸酶对回肠营养物质消化率的影响更大(P P P > 0.05)。与 RSM B 相比,RSM A 对所有非必需 AA 和大多数必需 AA(Trp 除外)的消化率更高,而对 Ca 和 P 的消化率则相反(P P P
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Novel sfericase protease improves amino acid digestibility of soybean meal and rapeseed meal in broiler chickens.

1. Two experiments were conducted to explore the effects of an exogenous sfericase protease on the apparent ileal nutrient digestibility of soybean meal (SBM) and rapeseed meal (RSM) in broiler chickens.2. In each experiment, a total of 256 sixteen-day-old male Cobb 500 broilers were fed one of four semi-purified experimental diets, comprising two different batches (A and B) of samples for either SBM (Exp. 1) or RSM (Exp. 2) without or with an exogenous sfericase (0 or 30,000 NFP/kg). Each experimental diet was fed to eight replicate pens of broiler chickens from 16 to 21 d of age (eight birds per cage), and ileal digesta were collected for measuring the digestibility coefficients.3. In Exp. 1, the amino acid digestibility was greater (P < 0.05) in SBM B compared with SBM A for Arg and Val, and a similar trend (P < 0.1) was observed for Tyr, Leu and Thr. Exogenous sfericase increased (P < 0.10) digestibility of most of amino acids except Gly, His and Trp. There was an interaction between SBM source and sfericase, whereby digestibility of P, N and Asp was increased by sfericase for SBM B but not for SBM A. In Exp. 2, there was no interaction (P > 0.05) between RSM source and sfericase for ileal nutrient digestibility. Digestibility was greater in RSM A compared to RSM B for all non-essential AA and most essential AA (except for Trp), while the reverse was noted for Ca and P (P < 0.05). Exogenous sfericase increased (P < 0.1) digestibility for all amino acids except Cys and Met.4. In conclusion, the current studies showed that both SBM and RSM batches influenced amino acid digestibility. Sfericase protease supplementation increased amino acid digestibility for both SBM and RSM. The digestibility effects were greater in the SBM batch with low digestibility for N and Asp which was in line with an increase in P digestibility.

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来源期刊
British Poultry Science
British Poultry Science 农林科学-奶制品与动物科学
CiteScore
3.90
自引率
5.00%
发文量
88
审稿时长
4.5 months
期刊介绍: From its first volume in 1960, British Poultry Science has been a leading international journal for poultry scientists and advisers to the poultry industry throughout the world. Over 60% of the independently refereed papers published originate outside the UK. Most typically they report the results of biological studies with an experimental approach which either make an original contribution to fundamental science or are of obvious application to the industry. Subjects which are covered include: anatomy, embryology, biochemistry, biophysics, physiology, reproduction and genetics, behaviour, microbiology, endocrinology, nutrition, environmental science, food science, feeding stuffs and feeding, management and housing welfare, breeding, hatching, poultry meat and egg yields and quality.Papers that adopt a modelling approach or describe the scientific background to new equipment or apparatus directly relevant to the industry are also published. The journal also features rapid publication of Short Communications. Summaries of papers presented at the Spring Meeting of the UK Branch of the WPSA are published in British Poultry Abstracts .
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