肉仔鸡豆粕标准回肠氨基酸消化率预测模型构建

doi:10.11843/j.issn.0366-6964.2025.12.026

摘要/Abstract

摘要：

旨在测定不同来源的10种豆粕的化学成分含量及不同日龄(13日龄与28日龄)肉鸡对其的标准回肠氨基酸消化率(standardized ileal amino acid digestibility, SIAAD)，并建立预测方程。试验采用完全随机设计，将1日龄健康状况良好的雄性AA肉仔鸡990只按体重相近原则随机分为11个处理组，即1个无氮日粮组和10个豆粕处理组。试验分为10~13日龄(每个处理组6个重复，每个重复10只鸡)和25~28日龄(每个处理组6个重复，每个重复5只鸡)两个试验期，分别在13日龄和28日龄时收集回肠食糜以检测SIAAD。结果表明：不同来源的豆粕化学成分差异较大。除His的标准回肠消化率(standardized ileal digestibility, SID)之外，不同豆粕来源与日龄对肉鸡SIAAD有显著的互作效应(P < 0.05)，不同来源豆粕的肉鸡SIAAD差异显著(P < 0.05)，除豆粕中SID Lys和SID Met外，肉鸡日龄对豆粕的SIAAD有显著影响(P < 0.05)，豆粕的SIAAD在28日龄显著高于13日龄(P < 0.05)。分别成功构建了13和28日龄肉鸡豆粕SIAAD预测模型12和16个，其中拟合度最好的预测模型为：SID Arg=254.056-1.179CP+1.212EE-0.409ADF-0.586Ash-0.08TI+0.885PA-1.509NFE-3.265GE (13日龄，R²=0.999，P < 0.000 1)；SID Trp=-107.513+11.121GE(28日龄，R²=0.467，P=0.029 3)。综上，不同来源豆粕的化学成分之间差异较大，13日龄的预测模型拟合度相对高于28日龄，本研究中的预测模型对于豆粕的肉鸡SIAAD预测有较好的参考价值。

关键词: 肉鸡, 日龄, 豆粕, 氨基酸标准回肠消化率, 预测方程

Abstract:

The objective of the present study was to determine the chemical compositions and standardized ileal amino acid digestibility (SIAAD) of 10 soybean meals from different sources for broilers at 13 d and 28 d of age, and establish the prediction equations. A completely randomized design was used in this study. A total of 990 1-d-old male Arbor Acres broilers in good health were randomly allotted to 1 of 11 treatment groups (1 nitrogen-free diet treatment group and 10 treatment groups for soybean meal). The experiment was divided into two experimental periods of 10-13 d and 25-28 d, in which there were 6 replicates of 10 chickens per treatment group during the 10-13 d, and 6 replicates of 5 chickens per treatment group during the 25-28 d. On 13 and 28 days of age, the ileal contents were collected to determine the SIAAD. The results showed that: The chemical compositions of soybean meal from different sources differed. There was significant interaction (P < 0.05) between the source of soybean meal and broiler age on the SIAAD except for the standardized ileal digestibility (SID) of His in soybean meal. The differences in SIAAD among different sources of soybean meals were significant (P < 0.05). Except for the SID Lys and SID Met, broiler age had an effect (P < 0.05) on the SIAAD in soybean meal, and the SIAAD of soybean meal were higher on d 28 than on d 13 (P < 0.05). The 12 and 16 prediction models of SIAAD in soybean meal were successfully developed for broilers at 13 and 28 d of age, respectively. The prediction models with highest fitting degree at 13 d and 28 d are as follows: SID Arg=254.056-1.179CP + 1.212EE-0.409ADF-0.586Ash-0.08TI + 0.885PA-1.509NFE-3.265GE (13 d, R²=0.999, P < 0.000 1);SID Trp=- 107.513 + 11.121GE (28 d, R²=0.467, P=0.029 3). In summary, these results indicate that the difference in the chemical compositions among different sources of soybean meal was great. The fitting degree of the prediction model at 13 d of age was higher than that at 28 d of age, and they have good reference value for predicting SIAAD of soybean meal in broilers.

Key words: broilers, days of age, soybean meal, standardized ileal amino acid digestibility, prediction equation

中图分类号:

孙久鹏, 廖秀冬, 张丽阳, 黄靓, 李笑然, 李顺英, 林烜旭, 王冲, 吕林. 肉仔鸡豆粕标准回肠氨基酸消化率预测模型构建[J]. 畜牧兽医学报, 2025, 56(12): 6242-6256.

SUN Jiupeng, LIAO Xiudong, ZHANG Liyang, HUANG Liang, LI Xiaoran, LI Shunying, LIN Xuanxu, WANG Chong, LÜ Lin. Construction of Prediction Model of Standardized Ileal Amino Acid Digestibility in Soybean Meal for Broilers[J]. Acta Veterinaria et Zootechnica Sinica, 2025, 56(12): 6242-6256.

图/表 8

表 1

豆粕中的化学成分含量(干物质基础)1"

项目Item	豆粕来源Sources of soybean meals										平均值Mean	标准差SD	变异系数CV
项目Item	SBM1	SBM2	SBM3	SBM4	SBM5	SBM6	SBM7	SBM8	SBM9	SBM10	平均值Mean	标准差SD	变异系数CV
总能/(MJ·kg^-1) GE	17.32	17.13	17.20	17.31	17.13	17.33	17.19	17.40	17.43	17.50	17.29	0.13	0.75
干物质DM	88.74	87.01	87.36	87.79	87.2	87.92	87.14	91.06	89.93	90.45	88.46	1.50	1.70
粗蛋白质CP	52.70	53.17	56.36	55.29	53.29	55.31	52.49	51.60	54.44	51.73	53.78	1.79	3.32
粗脂肪EE	1.81	1.56	1.56	1.56	1.74	1.39	1.38	1.01	0.88	1.16	1.41	0.31	21.84
粗纤维CF	6.85	6.95	8.05	8.40	8.72	8.34	8.16	8.31	8.17	7.96	7.99	0.61	7.64
中性洗涤纤维NDF	7.22	11.07	5.08	4.58	8.15	8.08	12.52	6.79	6.12	10.50	8.01	2.62	32.76
酸性洗涤纤维ADF	14.80	24.97	18.05	14.17	20.28	12.82	16.42	10.74	11.96	18.83	16.30	4.34	26.59
粗灰分Ash	7.39	13.80	7.04	6.53	9.52	7.01	11.28	6.30	5.83	10.87	8.56	2.66	31.15
无氮浸出物NFE	31.24	24.51	26.99	28.23	26.73	27.96	26.69	32.78	30.68	28.28	28.41	2.48	8.74
植酸/(g·kg^-1) PA	11.20	10.85	11.08	12.40	11.18	12.32	11.11	11.98	11.56	10.75	11.44	0.60	5.21
胰蛋白酶抑制因子/(mg·g^-1) TI	19.56	9.73	18.77	20.46	19.03	17.87	10.89	14.48	18.84	13.43	16.31	3.86	23.69
必需氨基酸IAA
精氨酸Arg	3.84	3.91	4.23	4.10	4.02	4.08	3.93	3.83	4.10	3.85	3.99	0.14	3.40
组氨酸His	1.44	1.40	1.53	1.49	1.45	1.48	1.41	1.39	1.47	1.37	1.44	0.05	3.34
异亮氨酸Ile	2.38	2.43	2.60	2.49	2.44	2.51	2.35	2.34	2.47	2.32	2.43	0.09	3.56
亮氨酸Leu	4.13	4.21	4.53	4.35	4.25	4.36	4.12	4.10	4.31	4.06	4.24	0.15	3.50
赖氨酸Lys	3.58	3.37	3.65	3.64	3.43	3.54	3.40	3.30	3.51	3.31	3.47	0.13	3.70
蛋氨酸Met	0.62	0.60	0.66	0.67	0.66	0.66	0.61	0.59	0.62	0.61	0.63	0.03	4.71
苯丙氨酸Phe	2.79	3.01	3.11	2.96	2.88	2.97	2.79	2.75	2.92	2.74	2.89	0.12	4.29
苏氨酸Thr	2.18	2.17	2.34	2.29	2.24	2.28	2.16	2.14	2.25	2.13	2.22	0.07	3.23
色氨酸Trp	0.62	0.60	0.64	0.65	0.64	0.70	0.60	0.63	0.63	0.60	0.63	0.03	4.64
缬氨酸Val	2.61	2.61	2.80	2.72	2.64	2.70	2.56	2.53	2.68	2.51	2.64	0.09	3.46
必需氨基酸总量TIAA	24.19	24.32	26.10	25.35	24.64	25.29	23.94	23.61	24.97	23.52	24.59	0.83	3.38
非必需氨基酸DAA
丙氨酸Ala	2.32	2.35	2.51	2.45	2.36	2.41	2.32	2.28	2.42	2.27	2.37	0.08	3.25
天冬氨酸Asp	6.13	6.16	6.66	6.40	6.24	6.40	6.08	6.02	6.34	5.97	6.24	0.21	3.40
胱氨酸Cys	0.51	0.47	0.51	0.52	0.54	0.51	0.45	0.44	0.46	0.49	0.49	0.03	6.86
谷氨酸Glu	9.76	9.83	10.66	10.23	9.95	10.29	9.69	9.48	10.06	9.56	9.95	0.37	3.69
甘氨酸Gly	2.32	2.36	2.47	2.39	2.33	2.38	2.31	2.26	2.37	2.25	2.34	0.06	2.75
脯氨酸Pro	2.83	2.87	3.08	2.99	2.87	2.99	2.84	2.78	2.94	2.78	2.90	0.10	3.37
丝氨酸Ser	2.82	2.86	3.05	2.93	2.86	2.95	2.82	2.74	2.88	2.77	2.87	0.09	3.23
酪氨酸Tyr	1.68	1.89	1.98	1.92	1.92	1.91	1.86	1.80	1.94	1.81	1.87	0.09	4.56
非必需氨基酸总量TDAA	28.37	28.78	30.92	29.82	29.08	29.84	28.36	27.79	29.41	27.90	29.03	0.98	3.39
总氨基酸TAA	52.56	53.10	57.01	55.16	53.73	55.13	52.30	51.41	54.38	51.42	53.62	1.81	3.38

表 1

表 2

表 3

表 4

不同日龄肉鸡对豆粕必需氨基酸标准回肠消化率1"

豆粕来源 Source	日龄 Age	SID Arg	SID His	SID Ile	SID Leu	SID Lys	SID Met	SID Phe	SID Thr	SID Trp	SID Val
SBM1	13 d	88.38^f	88.11	84.57^hij	84.76^h	86.89^ef	92.04^fg	84.44^g	83.98^g	87.50^cdef	86.79^h
	28 d	94.39^ab	93.23	94.26^a	92.51^abcd	91.06^ab	95.37^abcdef	91.83^abcd	91.47^a	84.65^efg	94.99^ab
SBM2	13 d	90.86^cdef	88.95	88.12^efgh	88.99^defg	88.65^abcdef	96.54^ab	88.43^def	85.95^defg	90.36^abc	89.55^defgh
	28 d	92.72^abc	90.62	92.15^abc	91.07^abcde	87.64^bcdef	92.74^cdefg	90.64^abcd	87.33^abcdefg	83.24^gh	91.65^abcdef
SBM3	13 d	89.40^def	87.09	83.66^j	84.48^h	86.22^f	91.63^g	84.23^g	83.47^g	85.67^defg	86.70^h
	28 d	91.78^bcde	90.36	89.71^cdef	89.58^cdef	87.52^cdef	92.25^efg	89.63^bcd	86.46^cdefg	80.40^h	90.60^cdefgh
SBM4	13 d	91.35^cde	89.96	87.86^fghi	88.65^efg	89.66^abcdef	95.91^abcd	88.37^def	87.00^bcdefg	89.28^abc	90.01^cdefgh
	28 d	94.87^d	92.80	92.62^abc	92.66^abc	90.67^abc	95.31^abcdef	92.99^ab	90.48^abc	84.58^fg	93.88^abc
SBM5	13 d	91.56^cde	90.98	88.21^defgh	88.90^efg	90.58^abcd	95.25^abcdefg	88.62^de	88.90^abcdef	92.04^a	92.53^abcde
	28 d	92.35^abc	90.30	90.54^bcdef	89.88^bcde	87.46^cdef	92.52^defg	89.75^bcd	86.79^cdefg	84.79^efg	91.15^bcdefg
SBM6	13 d	91.87^bcd	91.06	89.14^cdefg	89.89^bcde	91.37^a	96.79^ab	89.17^cd	89.33^abcde	91.22^ab	92.83^abcde
	28 d	93.55^abc	91.79	91.86^abcd	91.18^abcde	89.11^abcdef	94.26^bcdefg	91.08^abcd	88.36^abcdef	85.59^defg	92.55^abcde
SBM7	13 d	93.07^abc	92.28	90.28^bcdef	90.68^abcde	91.66^a	98.04^a	90.26^abcd	90.16^abcd	91.76^ab	93.25^abcd
	28 d	94.99^a	94.28	94.39^a	93.60^a	92.08^a	96.12^abc	93.27^a	91.81^a	84.71^efg	95.10^ab
SBM8	13 d	89.52^def	88.32	85.48^ghij	86.22^fgh	88.90^abcdef	95.63^abcde	85.58^efg	85.14^efg	89.99^abc	88.97^efgh
	28 d	92.79^abc	91.59	91.61^abcde	91.08^abcde	90.00^abcde	93.71^bcdefg	90.71^abcd	88.78^abcdef	84.86^efg	92.52^abcde
SBM9	13 d	88.14^f	87.72	83.33^j	84.50^h	86.94^ef	92.24^efg	84.03^g	83.72^g	86.93^cdef	87.37^gh
	28 d	94.83^a	93.65	93.87^ab	93.32^ab	91.52^a	96.36^ab	93.01^ab	91.58^a	88.14^bcde	94.71^ab
SBM10	13 d	89.02^ef	86.90	84.34^ij	85.80^gh	87.14^def	92.03^fg	85.00^fg	84.66^fg	88.64^abcd	87.98^fgh
	28 d	94.55^ab	93.26	93.48^ab	92.88^abc	91.32^a	96.13^abc	92.63^abc	91.29^ab	87.14^cdef	95.16^a
SEM		0.99	1.17	1.31	1.28	1.23	1.27	1.24	1.55	1.24	1.42
来源Source
SBM1		91.39^bc	90.67^bc	89.41^b	88.63^bc	88.97^bc	93.70^bc	88.14^cd	87.73^bc	86.08^a	90.89^bc
SBM2		91.79^bc	89.78^bc	90.14^ab	90.03^ab	88.14^bc	94.64^ab	89.53^abc	86.64^bc	86.80^a	90.60^bc
SBM3		90.59^c	88.72^c	86.68^c	87.03^c	86.87^c	91.94^c	86.93^d	84.96^c	83.04^b	88.65^c
SBM4		93.11^ab	91.38^ab	90.24^ab	90.66^ab	90.16^ab	95.61^ab	90.68^ab	88.74^ab	86.93^a	91.94^ab
SBM5		91.95^bc	90.64^bc	89.37^b	89.39^bc	89.02^bc	93.88^bc	89.19^bcd	87.85^bc	88.41^a	91.84^ab
SBM6		92.71^ab	91.42^ab	90.50^ab	90.53^ab	90.24^ab	95.53^ab	90.13^abc	88.84^ab	88.40^a	92.69^ab
SBM7		94.03^a	93.28^a	92.33^a	92.14^a	91.87^a	97.08^a	91.77^a	90.98^a	88.24^a	94.17^a
SBM8		91.16^bc	89.96^bc	88.54^bc	88.65^bc	89.45^ab	94.67^ab	88.14^cd	86.96^bc	87.43^a	90.75^bc
SBM9		91.49^bc	90.68^bc	88.60^bc	88.91^bc	89.23^bc	94.30^bc	88.52^bcd	87.65^bc	87.54^a	91.04^bc
SBM10		91.79^bc	90.08^bc	88.91^bc	89.34^bc	89.23^bc	94.08^bc	88.82^bcd	87.98^abc	87.89^a	91.57^ab
SEM		0.70	0.83	0.93	0.90	0.87	0.90	0.88	1.10	0.88	1.00
日龄Age
13 d		90.32^b	89.14^b	86.50^b	87.28^b	88.80	94.61	86.81^b	86.23^b	89.34^a	89.60^b
28 d		93.68^a	92.19^a	92.45^a	91.78^a	89.84	94.47	91.55^a	89.43^a	84.81^b	93.23^a
SEM		0.31	0.37	0.42	0.40	0.39	0.40	0.39	0.49	0.39	0.45
P值P-value
来源Source		0.035 6	0.030 2	0.010 4	0.016 8	0.022 2	0.023 1	0.011 3	0.040 9	0.001 3	0.037 8
日龄Age		< 0.000 1	< 0.000 1	< 0.000 1	< 0.000 1	0.063 1	0.816 6	< 0.000 1	< 0.000 1	< 0.000 1	< 0.000 1
来源×日龄Source×Age		0.033 9	0.064 8	0.013 1	0.021 4	0.017 8	0.007 7	0.021 2	0.017 1	0.015 5	0.010 4

表 4

表 5

不同日龄肉鸡对豆粕非必需氨基酸标准回肠消化率"

来源Source	日龄Age	SID Ala	SID Asp	SID Cys	SID Glu	SID Gly	SID Pro	SID Ser	SID Tyr
SBM1	13 d	86.24^efg	82.92^hi	70.35^def	86.39^g	82.06^fg	84.55^fg	87.14^fg	86.16^ef
	28 d	91.69^abc	90.54^abc	78.99^ab	91.94^abcd	88.01^abc	90.47^abc	92.91^ab	92.28^ab
SBM2	13 d	89.30^bcdef	84.40^fghi	72.01^bcdef	89.02^defg	82.62^efg	86.56^defg	89.18^defg	88.97^cde
	28 d	89.25^bcdef	86.68^defg	70.42^def	90.09^bcde	83.63^defg	87.49^bcdef	88.88^defg	90.80^abcd
SBM3	13 d	85.49^g	81.90ⁱ	68.75^f	86.17^g	82.00^fg	84.45^fg	86.79^g	87.99^def
	28 d	88.76^cdefg	86.83^defg	69.39^ef	89.34^def	84.81^bcdef	87.21^cdef	90.23^bcdef	90.95^abcd
SBM4	13 d	89.52^bcde	85.55^defg	75.70^abcdef	89.47^def	84.66^cdefg	87.55^bcdef	89.58^cdefg	90.32^bcd
	28 d	92.06^abc	90.47^abc	76.43^abcde	92.92^ab	88.10^abc	90.86^ab	92.70^abc	93.24^ab
SBM5	13 d	90.33^abcd	86.42^efg	76.58^abcde	90.20^bcde	86.36^abcde	88.62^abcde	90.58^bcde	90.49^abcd
	28 d	88.94^bcdefg	87.41^cdef	70.53^def	89.66^cde	85.25^bcdef	87.85^bcdef	89.50^defg	90.38^bcd
SBM6	13 d	91.07^abcd	85.80^efgh	77.28^abcd	90.13^bcde	86.54^abcd	88.78^abcde	90.77^bcde	90.83^abcd
	28 d	90.30^abcd	88.08^bcde	72.59^bcdef	90.78^abcd	86.31^abcde	88.90^abcd	91.29^abcde	91.51^abc
SBM7	13 d	92.20^abc	88.35^abcde	81.17^a	91.87^abcd	87.75^abc	90.53^abc	92.00^abcd	91.77^abc
	28 d	93.20^a	91.10^ab	82.79^a	93.33^a	89.63^a	91.93^a	93.04^ab	92.97^ab
SBM8	13 d	87.98^defg	83.54^ghi	71.51^cdef	87.81^efg	83.38^defg	85.25^efg	88.81^efg	87.99^def
	28 d	90.47^abcd	88.42^abcde	76.81^abcde	90.74^abcde	86.60^abcd	88.36^abcde	90.97^bcde	90.69^abcd
SBM9	13 d	85.69^fg	82.22ⁱ	70.19^def	86.63^fg	80.99^g	83.35^g	87.02^g	85.30^f
	28 d	92.59^ab	91.62^a	81.27^a	93.22^a	89.16^a	91.11^ab	94.27^a	93.42^a
SBM10	13 d	86.59^efg	81.64ⁱ	70.38^def	86.59^fg	80.55^h	83.53^g	87.18^fg	85.18^f
	28 d	92.27^abc	90.03^abcd	78.64^abc	92.46^abc	88.53^ab	90.80^abc	92.92^ab	92.74^ab
SEM		1.31	1.20	2.64	1.05	1.35	1.29	1.13	1.07
来源Source
SBM1		88.97^bc	86.73^bcd	74.67^b	89.17^bc	85.03^bcd	87.51^bc	90.02^bc	89.22^cd
SBM2		89.28^bc	85.54^cd	71.21^bc	89.56^bc	83.12^d	87.02^bc	89.03^bc	89.88^bcd
SBM3		87.12^c	84.37^d	69.07^c	87.75^c	83.40^cd	85.83^c	88.51^c	89.47^cd
SBM4		90.79^ab	88.01^ab	76.06^b	91.19^ab	86.38^ab	89.20^ab	91.14^ab	91.78^ab
SBM5		89.63^bc	86.91^bc	73.55^bc	89.93^b	85.80^abc	88.23^bc	90.04^bc	90.43^abcd
SBM6		90.68^ab	86.94^bc	74.94^b	90.46^b	86.42^ab	88.84^ab	91.03^ab	91.17^abc
SBM7		92.70^a	89.72^a	81.98^a	92.60^a	88.69^a	91.23^a	92.52^a	92.37^a
SBM8		89.22^bc	85.98^bcd	74.16^bc	89.27^bc	84.99^bcd	86.81^bc	89.89^bc	89.34^cd
SBM9		89.14^bc	86.92^bc	75.73^b	89.92^b	85.07^bcd	87.23^bc	90.65^abc	89.36^cd
SBM10		89.43^bc	85.84^bcd	74.51^b	89.52^bc	84.54^bcd	87.16^bc	90.05^bc	88.96^d
SEM		0.92	0.85	1.87	0.74	0.95	0.91	0.80	0.76
日龄Age
13 d		88.44^b	84.27^b	73.39^b	88.43^b	83.69^b	86.32^b	88.90^b	88.50^b
28 d		90.95^a	89.12^a	75.78^a	91.45^a	87.00^a	89.50^a	91.67^a	91.90^a
SEM		0.41	0.38	0.84	0.33	0.43	0.41	0.36	0.34
P值P-value
来源Source		0.012 9	0.003 6	0.001 8	0.002 9	0.005 2	0.005 5	0.047 4	0.013 2
日龄Age		< 0.000 1	< 0.000 1	0.045 7	< 0.000 1	< 0.000 1	< 0.000 1	< 0.000 1	< 0.000 1
来源×日龄Source×Age		0.016 9	0.004 9	0.016 9	0.009	0.005 5	0.009 3	0.002 6	0.000 6

表 5

表 6

表 7

表 8

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项目Item	含量/% Content
玉米淀粉Corn starch	20.07
葡萄糖Glucose	64.00
羧甲基纤维素Carboxymethylcellulose	5.00
大豆油Soybean oil	5.00
维生素预混料Vitamin premix	0.02
微量元素预混料Trace element premix	0.20
磷酸二氢钙CaH₂PO₄	1.90
碳酸氢钠NaHCO₃	0.75
氯化钾KCl	0.29
氧化镁MgO	0.20
氯化胆碱Choline chloride (50%)	0.50
石粉Limestone	1.30
碳酸钾K₂CO₃	0.26
二氧化钛TiO₂	0.50
抗氧化剂Antioxidant	0.01
合计Total	100.00

项目brItem	粗蛋白CP	粗脂肪EE	粗纤维CF	中性洗涤纤维NDF	酸性洗涤纤维ADF	粗灰分Ash	胰蛋白酶抑制因子TI	植酸PA	无氮浸出物NFE	总能GE
SID Arg	0.088	0.312	0.365	0.433	0.222	0.390	-0.301	0.204	-0.603	-0.587
SID His	0.022	0.294	0.362	0.369	0.009	0.216	-0.131	0.303	-0.371	-0.513
SID Ile	-0.035	0.331	0.210	0.499	0.217	0.436	-0.344	0.226	-0.536	-0.552
SID Leu	-0.033	0.257	0.257	0.522	0.245	0.468	-0.379	0.219	-0.574	-0.503
SID Lys	-0.065	0.141	0.455	0.390	-0.039	0.214	-0.214	0.390	-0.315	-0.372
SID Met	-0.115	0.087	0.234	0.439	0.065	0.346	-0.445	0.350	-0.363	-0.441
SID Phe	0.003	0.308	0.260	0.487	0.254	0.452	-0.338	0.217	-0.587	-0.553
SID Thr	-0.029	0.237	0.435	0.458	0.080	0.301	-0.210	0.253	-0.439	-0.439
SID Trp	-0.361	0.141	0.307	0.573	0.178	0.447	-0.404	0.157	-0.335	-0.365
SID Val	-0.048	0.163	0.476	0.459	0.079	0.301	-0.238	0.262	-0.427	-0.426
SID Ala	-0.083	0.233	0.322	0.494	0.128	0.378	-0.331	0.266	-0.458	-0.477
SID Asp	-0.035	0.313	0.332	0.401	0.073	0.286	-0.206	0.248	-0.403	-0.560
SID Cys	-0.031	0.195	0.427	0.425	-0.023	0.237	-0.185	0.284	-0.362	-0.392
SID Glu	-0.041	0.219	0.366	0.467	0.131	0.363	-0.305	0.242	-0.479	-0.522
SID Gly	0.072	0.308	0.464	0.273	-0.053	0.115	-0.068	0.351	-0.322	-0.518
SID Pro	0.058	0.370	0.339	0.391	0.122	0.297	-0.199	0.250	-0.485	-0.599
SID Ser	-0.080	0.199	0.390	0.456	0.067	0.314	-0.295	0.281	-0.404	-0.486
SID Tyr	0.225	0.393	0.388	0.216	0.122	0.205	-0.129	0.338	-0.511	-0.662^*

项目Item	粗蛋白CP	粗脂肪EE	粗纤维CF	中性洗涤纤维NDF	酸性洗涤纤维ADF	粗灰分Ash	胰蛋白酶抑制因子TI	植酸PA	无氮浸出物NFE	总能GE
SID Arg	-0.206	-0.278	-0.051	0.170	-0.382	-0.071	< 0.0001	0.169	0.258	0.503
SID His	-0.294	-0.371	-0.067	0.216	-0.456	-0.102	-0.072	0.062	0.365	0.537
SID Ile	-0.449	-0.243	-0.363	0.387	-0.238	0.129	-0.230	-0.090	0.275	0.419
SID Leu	-0.326	-0.384	-0.145	0.277	-0.331	0.028	-0.176	0.039	0.267	0.502
SID Lys	-0.375	-0.454	-0.021	0.149	-0.543	-0.180	-0.063	0.119	0.501	0.634^*
SID Met	-0.272	-0.435	-0.021	0.166	-0.460	-0.134	-0.015	0.100	0.381	0.646^*
SID Phe	-0.198	-0.380	-0.016	0.188	-0.353	-0.031	-0.098	0.136	0.214	0.498
SID Thr	-0.365	-0.351	-0.142	0.173	-0.436	-0.108	-0.040	0.036	0.433	0.589
SID Trp	-0.391	-0.590	0.195	0.164	-0.396	-0.124	0.018	0.168	0.414	0.684^*
SID Val	-0.413	-0.320	-0.177	0.247	-0.375	-0.036	-0.082	-0.014	0.392	0.598
SID Ala	-0.304	-0.414	0.004	0.194	-0.453	-0.099	-0.082	0.105	0.356	0.555
SID Asp	-0.219	-0.358	0.025	0.012	-0.526	-0.260	0.135	0.141	0.461	0.548
SID Cys	-0.449	-0.478	-0.028	0.210	-0.509	-0.132	-0.125	0.031	0.502	0.549
SID Glu	-0.219	-0.396	0.021	0.135	-0.426	-0.109	-0.034	0.154	0.304	0.519
SID Gly	-0.254	-0.413	0.165	0.070	-0.569	-0.264	0.091	0.145	0.461	0.588
SID Pro	-0.239	-0.292	0.031	0.182	-0.407	-0.092	0.004	0.094	0.285	0.481
SID Ser	-0.093	-0.442	0.056	-0.094	-0.612	-0.387	0.219	0.180	0.517	0.677^*
SID Tyr	0.030	-0.317	0.000	-0.007	-0.374	-0.176	0.119	0.134	0.209	0.505

预测方程 Prediction equations	决定系数 R²	残差标准差 RSD	P值 P-value
13日龄
SID Arg=254.056-1.179CP+1.212EE-0.409ADF-0.586Ash-0.08TI+ 0.885PA-1.509NFE-3.265GE	0.999	0.649	< 0.000 1
SID His=185.077+0.607CF+0.851NDF+0.268TI+2.374PA-8.046GE	0.965	0.516	0.005
SID Ile=272.477-10.754GE	0.304	2.211	0.098
SID Leu=157.547+0.723NDF+3.523PA-0.302NFE-0.632GE	0.958	0.655	< 0.000 1
SID Phe=127.515-0.97CP+3.69PA-1.088NFE	0.868	1.054	0.005
SID Trp=156.366+0.76NDF+2.793PA-6.076GE	0.787	1.21	0.019
SID Ala=141.989+1.898EE+1.21CF+0.859NDF+3.147PA-6.29GE	0.993	0.291	< 0.0001
SID Asp=251.899-9.693GE	0.313	1.952	0.093
SID Glu=228.464-8.097GE	0.273	1.798	0.122
SID Gly=259.036+2.13CF-11.123GE	0.536	1.937	0.068
SID Pro=173.1+2.588EE+1.466CF+0.738NDF+2.86PA-8.14GE	0.973	0.615	0.003
SID Tyr=287.984+1.043CF+0.466NDF+2.796PA-14.082GE	0.954	0.682	0.002
28日龄
SID Arg=12.731-4.681GE	0.253	1.095	0.139
SID His=-13.078+6.087GE	0.288	1.300	0.109
SID Leu=-4.012+5.539GE	0.252	1.298	0.139
SID Lys=-62.851+8.829GE	0.402	1.463	0.049
SID Met=-44.53+8.038GE	0.417	1.292	0.044
SID Phe=-1.027+5.353GE	0.248	1.267	0.143
SID Thr=-79.832+9.788GE	0.347	1.824	0.073
SID Trp=-107.513+11.121GE	0.467	1.614	0.029
SID Val=-48.109+8.173GE	0.357	1.491	0.068
SID Ala=-30.468+7.021GE	0.308	1.430	0.096
SID Asp=-47.077+7.875GE	0.300	1.634	0.101
SID Cys=-279.319+20.533GE	0.302	4.246	0.100
SID Glu=-14.426+6.122GE	0.270	1.370	0.124
SID Gly=-71.804+9.183GE	0.346	1.715	0.074
SID Ser=-69.555+9.323GE	0.458	1.376	0.031
SID Tyr=10.765+4.576GE	0.255	1.063	0.137

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