快速型黄羽肉鸡生长模型及营养沉积规律的研究

doi:10.11843/j.issn.0366-6964.2024.10.022

Abstract

Abstract:

The purpose of this study was to investigate the growth pattern and dynamic nutritional deposition pattern of rapidly-growing yellow-feathered chickens (Xiangjia Yellow Chicken No.2) at 0-56 days of age. Aim to establish growth curves of body weight(BW) and average daily gain(ADG), deposition models of energy(TE), body protein(BP), body fat(BF), total amio acids(TAA). In order to provide scientific proof for accurate feeding of rapidly-growing yellow-feathered chickens. In this study, 672 healthy 0-day-old rapidly-growing yellow-feathered chickens (No.2 Xiangjia, half male half female) were selected from the same batch of chicks. The growth performance indexes and body composition of male or female chickens were measured at the 0th, 7th, 14th, 21st, 28th, 35th, 42nd, 49th, and 56th days of age. The results showed that BW, empty weight (EW), feather weight (FW), ADG, and the deposition of TE, BP, BF and TAA of chickens were significantly increased with the age (P < 0.001). The growth curves of BW, EW, FW and ADG, and the model for the weights and deposition of TE, BP, BF, and TAA were used to fit by three non-linear regression model, Gompertz, Logistic and Bertalanffy.Based on the coefficients of determination, residual sum of squares, mean squared error and the red pool information criterion of the regression model, the Gompertz model was more accurate than Logistic or Bertalanffy model. Using the Gompertz function equation, growth curves for BW, ADG, and the model for deposition of TE, BP, BF and TAA were developed for the Xiangjia No.2 yellow-feathered chickens. In conclusion, Gompertz model can accurately predict BW, ADG and the nutrient weights and deposition of the Xiangjia No.2 yellow feathered chicken, and also provide a basis for the study of its nutrient dynamic requirements and precise feeding.

Key words: rapidly-growing yellow-feathered chickens, growth curve, body composition, non-linear regression model, growth model

CLC Number:

S831.1

Dan GOU, Yunjie ZHAO, Qi CHANG, Xinxiong ZHUO, Jian XIAO, Haihan ZHANG, Xi HE, Zehe SONG. Study on Growth Model and Nutrient Deposition Pattern of Rapidly-growing Yellow-feathered Chickens[J]. Acta Veterinaria et Zootechnica Sinica, 2024, 55(10): 4500-4516.

Figures/Tables 10

Table 1

Table 2

Table 3

Table 4

Table 5

The content and weight of total energy, body protein, body fat and total amino acid (absolute-dry basis)"

指标 Indicator	性别 Sex	日龄Days of age									SEM	P值P-value
指标 Indicator	性别 Sex	0 d	7 d	14 d	21 d	28 d	35 d	42 d	49 d	56 d	SEM	P	L	Q
总能量/kJ Content of TE	公Male	232.26^h	621.65^h	1 890.5^g	3 737.46^f	5 621.63^e	9 241.10^d	12 601.54^c	16 827.46^b	20 242.12^a	814.93	< 0.001	< 0.001	< 0.001
	母Female	186.06^h	607.77^h	1 656.23^g	3 416.04^f	5 285.02^e	8 732.31^d	11 679.72^c	15 472.51^b	19 087.39^a	765.92	< 0.001	< 0.001	< 0.001
	SEM	11.41	15.56	62.50	127.55	200.66	422.64	640.62	696.46	1 088.53	-	-	-	-
	P值	0.001	0.387	0.002	0.024	0.116	0.249	0.172	0.072	0.310	-	-	-	-
体蛋白含量/% Content of BP	公Male	61.84^a	59.98^a	54.10^b	53.10^b	53.77^b	48.30^d	50.30^cd	49.69^d	51.48^bc	0.57	< 0.001	< 0.001	< 0.001
	母Female	65.59^a	60.39^b	55.31^c	51.59^de	53.31^cd	49.16^e	49.52^e	46.30^f	49.48^de	0.73	< 0.001	< 0.001	< 0.001
	SEM	0.81	0.59	0.91	1.33	1.04	0.97	0.84	1.29	2.28	-	-	-	-
	P值	< 0.001	0.508	0.233	0.241	0.642	0.420	0.329	0.021	0.687	-	-	-	-
体脂肪含量/% Content of BF	公Male	27.45^de	28.99^e	27.90^e	32.75^bc	31.36^cd	31.05^cd	32.38^bc	35.28^ab	35.88^a	0.46	< 0.001	< 0.001	< 0.001
	母Female	23.70^e	29.13^e	30.73^de	33.97^cde	31.53^d	32.28^de	36.58b^c	39.70^ab	41.67^a	0.76	< 0.001	< 0.001	< 0.001
	SEM	0.97	0.90	1.62	1.42	1.17	2.13	1.38	1.55	3.00	-	-	-	-
	P值	0.020	0.905	0.092	0.357	0.858	0.585	0.009	0.011	0.054	-	-	-	-
总氨基酸含量/% Content of TAA	公Male	41.57^ab	43.06^ab	43.64^a	38.64^ab	39.67^ab	38.41^ab	34.90^b	36.03^b	36.19^ab	0.66	< 0.001	0.001	0.004
	母Female	42.28^a	42.95^a	40.33^a	40.30^a	40.36^a	39.53^ab	35.70^cd	32.43^d	35.23^bc	0.56	< 0.001	< 0.001	< 0.001
	SEM	3.14	1.63	1.90	1.81	1.19	1.52	2.30	2.71	3.28	-	-	-	-
	P值	0.960	0.965	0.096	0.399	0.366	0.435	0.632	0.102	0.663	-	-	-	-
体蛋白重量/(g·只^-1) Weight of BP	公Male	5.91^h	15.48^h	41.70^g	80.31^f	120.46^e	177.32^d	250.95^c	325.21^b	398.15^a	15.69	< 0.001	< 0.001	< 0.001
体蛋白重量/(g·只^-1) Weight of BP	母Female	5.22^h	15.08^h	37.90^g	69.39^f	113.64^e	167.51^d	224.82^c	272.47^b	353.35^a	13.69	< 0.001	< 0.001	< 0.001
体脂肪重量/(g·只^-1) Weight of BF	公Male	2.62^h	7.48^gh	21.50^g	49.53^f	70.25^e	114.01^d	161.55^c	230.91^b	277.45^a	11.24	< 0.001	< 0.001	< 0.001
体脂肪重量/(g·只^-1) Weight of BF	母Female	1.89^g	7.28^g	21.05^fg	45.69^ef	67.23^e	110.02^d	166.05^c	233.60^b	297.57^a	12.03	< 0.001	< 0.001	< 0.001
总氨基酸重量/(g·只^-1) Weight of TAA	公Male	3.97^h	11.12^h	33.64^g	58.44^f	88.88^e	141.00^d	174.15^c	235.79^b	279.88^a	11.31	< 0.001	< 0.001	< 0.001
总氨基酸重量/(g·只^-1) Weight of TAA	母Female	3.37^h	10.73^h	27.63^g	54.2^f	86.03^e	134.70^d	162.09^c	190.84^b	251.59^a	10.29	< 0.001	< 0.001	< 0.001

Table 5

Table 6

The deposition and growth rate of total energy, body protein, body fat and total amino acid (absolute-dry basis)"

指标 Indicator	性别 Sex	日龄Days of age								SEM	P值P-value
指标 Indicator	性别 Sex	1~7 d	8~14 d	15~21 d	22~28 d	29~35 d	36~42 d	43~49 d	50~56 d	SEM	P	L	Q
能量沉积量/kJ Deposition of TE	公Male	389.40^c	1 268.84^c	1 846.96^b	1 884.17^b	3 619.47^a	3 360.44^a	4 225.93^a	3 583.49^a	203.44	< 0.001	< 0.001	< 0.001
能量沉积量/kJ Deposition of TE	母Female	421.71^d	1 048.46^cd	1 759.81^bcd	1 868.98^bc	3 447.30^a	2 947.40^ab	3 792.80^a	3 910.27^a	211.74	< 0.001	< 0.001	< 0.001
体蛋白沉积量/(g·只^-1) Deposition of BP	公Male	9.57^d	26.22^c	38.61^c	40.16^c	56.85^b	73.63^a	74.25^a	71.21^a	3.53	< 0.001	< 0.001	< 0.001
体蛋白沉积量/(g·只^-1) Deposition of BP	母Female	9.86^e	22.81^de	31.50^cd	44.25^bc	53.87^b	57.31^b	47.66^bc	83.91^a	3.32	< 0.001	< 0.001	< 0.001
体脂肪沉积量/(g·只^-1) Deposition of BF	公Male	4.86^d	14.02^d	28.02^d	20.73^d	43.76^bc	47.54^abc	69.36^a	53.88^ab	3.47	< 0.001	< 0.001	< 0.001
体脂肪沉积量/(g·只^-1) Deposition of BF	母Female	5.39^c	13.77^bc	24.64^bc	21.54^bc	42.79^ab	56.04^a	67.55^a	70.44^a	4.25	< 0.001	< 0.001	< 0.001
总氨基酸沉积量/(g·只^-1) Deposition of TAA	公Male	7.14^d	22.52^cd	24.81^bcd	30.44^bc	51.65^a	28.52^bc	61.65^a	44.17^ab	2.97	< 0.001	< 0.001	< 0.001
总氨基酸沉积量/(g·只^-1) Deposition of TAA	母Female	7.39^c	16.90^bc	26.57^b	32.67^b	53.54^a	27.21^b	28.75^b	65.04^a	3.05	< 0.001	< 0.001	< 0.001
能量沉积增长率/% Growth rate of deposited TE	公Male	171.14^b	204.39^a	98.50^c	50.58^de	64.75^d	36.98^ef	34.71^ef	22.01^f	8.40	< 0.001	< 0.001	< 0.001
能量沉积增长率/% Growth rate of deposited TE	母Female	230.42^a	172.76^b	107.52^c	55.56^de	65.53^d	34.44^ef	33.92^ef	26.40^f	9.33	< 0.001	< 0.001	< 0.001
SEM	21.00	9.89	11.32	6.72	7.54	7.93	9.23	8.10	-	-	-	-
P值P-value	0.014	0.006	0.439	0.472	0.919	0.753	0.933	0.598	-	-	-	-
体蛋白沉积增长率/% Growth rate of deposited BP	公Male	164.58^a	169.59^a	93.02^b	50.24^c	47.37^c	41.96^cd	30.03^de	22.13^e	7.28	< 0.001	< 0.001	< 0.001
体蛋白沉积增长率/% Growth rate of deposited BP	母Female	190.00^a	151.13^b	84.09^c	64.26^d	47.82^de	34.33^ef	22.20^f	31.63^ef	7.54	< 0.001	< 0.001	< 0.001
SEM	15.02	8.75	7.05	6.22	5.61	4.93	7.19	5.24	-	-	-	-
P值P-value	0.113	0.053	0.226	0.041	0.938	0.144	0.295	0.095	-	-	-	-
体脂肪沉积增长率/% Growth rate of deposited BF	公Male	190.44^a	187.66^a	132.77^b	43.39^cd	64.39^c	43.94^cd	44.39^cd	25.31^d	8.94	< 0.001	< 0.001	< 0.001
体脂肪沉积增长率/% Growth rate of deposited BF	母Female	298.10^a	191.95^b	120.52^c	48.48^d	62.81^d	54.20^d	43.13^d	31.77^d	12.44	< 0.001	< 0.001	< 0.001
SEM	38.45	21.90	19.28	9.85	13.63	11.46	12.65	14.52	-	-	-	-
P值P-value	0.014	0.847	0.535	0.614	0.909	0.386	0.922	0.665	-	-	-	-
总氨基酸沉积增长率/% Growth rate of deposited TAA	公Male	190.09^a	202.67^a	74.02^b	53.09^bcd	58.33^bc	20.52^d	37.16^cd	20.25^d	9.64	< 0.001	< 0.001	< 0.001
总氨基酸沉积增长率/% Growth rate of deposited TAA	母Female	220.22^a	159.58^b	98.11^c	63.64^d	64.23^d	21.08^e	18.56^e	35.70^de	10.03	< 0.001	< 0.001	< 0.001
SEM	32.88	15.94	10.72	10.43	10.50	8.76	9.25	9.17	-	-	-	-
P值P-value	0.378	0.017	0.041	0.332	0.587	0.950	0.064	0.120	-	-	-	-

Table 6

Table 7

Table 8

Comparison of measured and fitted values of the three models"

指标 Indicator	日龄/d Days of age	实测值 Measured values	模型拟合值Fitted Values			指标 Indicator	日龄/d Days of age	实测值 Measured values	模型拟合值Fitted Values
指标 Indicator	日龄/d Days of age	实测值 Measured values	Gompertz	Logistic	Bertalanffy	指标 Indicator	日龄/d Days of age	实测值 Measured values	Gompertz	Logistic	Bertalanffy
公鸡体重/g BW of male	0	39.26	43.51	85.75	22.28	母鸡体重/g BW of female	0	36.38	40.15	79.14	20.33
	7	104.26	118.20	153.02	104.68		7	96.71	109.55	140.80	97.26
	14	254.62	257.17	267.42	259.98		14	232.59	237.37	244.97	240.56
	21	498.41	470.78	451.52	483.70		21	460.34	430.65	410.94	443.15
	28	734.46	753.50	722.93	763.49		28	667.14	681.42	652.14	691.19
	35	1 097.17	1 086.35	1 075.53	1 084.38		35	975.77	970.38	959.60	969.44
	42	1 433.12	1 443.95	1 465.29	1 431.61		42	1 267.56	1 274.12	1 292.15	1 263.90
	49	1 804.86	1 801.68	1 826.22	1 792.14		49	1 571.15	1 571.51	1 593.62	1 562.92
	56	2 141.67	2 140.17	2 109.61	2 155.12		56	1 850.05	1 847.16	1 826.21	1 857.43
公鸡日增重/(g·d^-1) ADG of male	1-7	9.29	9.07	9.66	9.09	母鸡日增重/(g·d^-1) ADG of female	1-7	8.62	8.04	8.42	8.11
	8-14	21.52	20.87	19.45	21.54		8-14	19.34	18.87	17.54	19.44
	15-21	34.98	32.35	31.58	32.48		15-21	29.67	28.72	28.28	28.76
	22-28	33.72	40.72	41.35	40.38		22-28	30.05	35.32	36.00	34.99
	29-35	50.96	45.96	46.83	45.56		29-35	43.34	39.11	39.81	38.79
	36-42	50.10	48.98	49.31	48.80		36-42	42.14	41.13	41.34	41.00
	43-49	51.06	50.64	50.32	50.78		43-49	43.37	42.15	41.90	42.25
	50-56	49.65	51.54	50.71	51.96		50-56	39.98	42.67	42.10	42.95
公鸡能量/kJ TE of male	0	232.25	247.14	576.65	83.71	母鸡能量/kJ TE of female	0	186.05	237.33	553.22	81.86
	7	621.65	742.32	1 060.71	596.41		7	607.77	699.65	1 007.95	559.15
	14	1 890.50	1 765.26	1 920.35	1 751.48		14	1 656.22	1 646.28	1 808.47	1 625.30
	21	3 737.46	3 492.56	3 382.00	3 599.30		21	3 416.04	3 240.71	3 159.99	3 331.64
	28	5 621.63	5 977.99	5 692.60	6 095.86		28	5 285.02	5 539.18	5 288.27	5 645.18
	35	9 241.10	9 128.61	8 955.35	9 147.69		35	8 732.31	8 466.58	8 297.87	8 487.02
	42	12 601.54	12 741.39	12 897.45	12 640.39		42	11 679.72	11 845.40	11 964.82	11 757.40
	49	16 827.46	16 568.37	16 853.78	16 456.31		49	15 472.51	15 451.91	15 701.45	15 351.42
	56	20 242.12	20 376.20	20 149.98	20 484.73		56	19 087.39	19 069.76	18 876.03	19 168.56
公鸡体蛋白/g BP of male	0	5.91	7.58	14.15	4.16	母鸡体蛋白/g BP of female	0	5.22	7.32	13.88	4.03
	7	15.48	19.20	24.83	16.88		7	15.09	18.35	24.01	16.12
	14	41.70	40.68	42.89	40.82		14	37.89	38.40	40.84	38.41
	21	80.31	74.66	72.22	76.66		21	69.39	69.45	67.64	71.10
	28	120.46	121.94	116.81	123.95		28	113.64	111.74	107.47	113.36
	35	177.32	181.28	178.24	181.57		35	167.51	163.68	161.07	163.82
	42	250.95	249.77	252.33	248.03		42	224.82	222.37	224.25	220.86
	49	325.21	323.62	328.57	321.68		49	272.47	284.37	288.10	282.83
	56	398.15	398.98	395.24	400.87		56	353.35	346.44	343.33	348.19
公鸡体脂肪/g BF of male	0	2.62	3.26	7.11	1.25	母鸡体脂肪/g BF of female	0	1.89	3.25	6.80	1.39
	7	7.48	9.26	13.00	7.49		7	7.28	8.83	12.36	7.20
	14	21.50	21.54	23.47	21.29		14	21.05	20.19	22.25	19.88
	21	49.52	42.63	41.43	43.90		21	45.69	40.03	39.33	41.14
	28	70.25	74.05	70.44	75.64		28	67.22	70.56	67.39	72.11
	35	114.01	115.71	113.02	116.20		35	110.02	112.81	109.98	113.44
	42	161.55	166.00	167.53	164.87		42	166.05	166.39	167.38	165.40
	49	230.91	222.26	226.24	220.72		49	233.60	229.56	233.52	227.96
	56	277.45	281.42	278.84	282.68		56	297.57	299.65	297.25	300.86
公鸡总氨基酸/g TAA of Male	0	3.97	5.59	10.77	2.95	母鸡总氨基酸/g TAA of female	0	3.37	5.06	10.49	2.38
	7	11.11	14.52	18.91	12.76		7	10.73	13.63	18.33	11.68
	14	33.64	31.03	32.65	31.20		14	27.63	29.47	31.40	29.40
	21	58.44	56.76	54.76	58.30		21	54.20	53.70	52.08	54.96
	28	88.88	91.73	87.83	93.16		28	86.03	85.65	82.19	86.82
	35	141.01	134.35	132.23	134.44		35	134.70	123.17	121.19	123.19
	42	174.15	181.98	183.91	180.64		42	162.09	163.41	164.70	162.33
	49	235.79	231.63	234.98	230.29		49	190.84	203.62	205.82	202.73
	56	279.87	280.60	277.88	282.04		56	251.59	241.64	239.04	243.14

Table 8

Fig. 1

Table 9

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项目Item	阶段Stage
项目Item	1~21日龄 1-21 days	22~42日龄 22-42 days	43~56日龄 43-56 days
日粮组成Diet composition
玉米Corn	52.30	55.20	60.20
豆粕(CP 43%) Soybean meal	39.40	34.50	30.00
豆油Soybean oil	4.00	5.94	6.00
L-赖氨酸(78%) L-Lys	0.12	0.11	0.02
DL-蛋氨酸(98.5%) DL-Met	0.25	0.25	0.14
磷酸氢钙CaHPO₄	2.00	2.00	1.64
石粉Limestone	1.03	1.10	1.10
预混料¹⁾ Premix	0.90	0.90	0.90
合计Total	100	100	100
营养水平²⁾ Nutrients level
代谢能/(MJ·kg^-1) ME	12.60	12.86	13.18
粗蛋白CP	20.67	19.09	18.87
赖氨酸Lys	1.39	1.22	1.00
蛋氨酸Met	0.61	0.50	0.41
蛋氨酸+胱氨酸Met+Cys	0.99	0.85	0.74
苏氨酸Thr	0.90	0.77	0.74
色氨酸Try	0.28	0.25	0.22
钙Ca	0.91	0.92	0.84
有效磷P	0.72	0.69	0.62

模型Model	表达式Expression	拐点体重WIP	拐点日龄AIP	最大增重/沉积MWG
Gompertz	Y=Ae^{-exp-B(t-AIP)}	A/e	AIP	lnB/AIP*WIP
Logistic	Y=A/(1+Be^-Kt)	A/2	7(lnB)/K	Kw/2
Bertalanffy	Y=A(1-Be^-Kt)³	8A/27	7(ln3B)/K	3Kw/2

指标 Indicator	性别 Sex	日龄Days of age									SEM	P值P-value
指标 Indicator	性别 Sex	0 d	7 d	14 d	21 d	28 d	35 d	42 d	49 d	56 d	SEM	P	L	Q
体重/g BW	公Male	39.26ⁱ	104.26^h	254.62^g	498.41^f	734.46^e	1 097.17^d	1 433.12^c	1 804.86^b	2 141.67^a	61.19	< 0.001	< 0.001	< 0.001
	母Female	36.38ⁱ	96.71^h	232.59^g	460.34^f	667.14^e	975.77^d	1 267.56^c	1 571.15^b	1 850.05^a	54.78	< 0.001	< 0.001	< 0.001
	SEM	0.46	1.56	2.64	5.44	11.58	15.81	22.52	30.06	40.80	-	-	-	-
	P值	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001	-	-	-	-
空体重/g EW	公Male	37.30^h	97.65^h	241.04^g	460.65^f	641.78^e	1 034.08^d	1 332.50^c	1 713.75^b	1 988.75^a	80.48	< 0.001	< 0.001	< 0.001
	母Female	33.54^h	94.11^h	220.79^g	404.94^f	600.26^e	926.24^d	1 182.50^c	1 472.50^b	1 708.75^a	69.82	< 0.001	< 0.001	< 0.001
	SEM	1.28	1.76	4.92	11.46	16.62	28.90	46.73	36.39	46.29	-	-	-	-
	P值	0.011	0.064	0.001	< 0.001	0.026	0.002	0.006	< 0.001	< 0.001	-	-	-	-
羽毛重/g FW	公Male	2.31^g	4.25^g	3.71^g	9.26^f	20.49^e	29.46^d	39.86^c	61.23^b	67.15^a	2.82	< 0.001	< 0.001	< 0.001
	母Female	2.20^g	3.93^g	3.36^g	8.33^f	17.68^e	29.29^d	40.41^c	55.248^b	62.782^a	2.65	< 0.001	< 0.001	< 0.001
	SEM	0.19	0.18	0.29	0.76	1.58	1.65	2.88	3.61	2.23	-	-	-	-
	P值	0.566	0.099	0.244	0.237	0.097	0.917	0.851	0.119	0.071	-	-	-	-

模型Model	指标 Indicator	决定系数 R²	残差平方和 SSR	均方误差 MSE	赤池信息准则 AIC	指标 Indicator	决定系数 R²	残差平方和 SSR	均方误差 MSE	赤池信息准则 AIC
Gompertz	公鸡体重 BW of male	0.995	331 630.9	2 493.5	1 425.7	母鸡体重 BW of female	0.976	445 662.8	3 325.8	1 474.9
Logistic		0.993	458 345.9	3 446.2	1 468.7		0.973	538 539.6	4 019.0	1 500.3
Bertalanffy		0.995	3 876 028.0	29 143.1	1 752.7		0.975	383 3022.0	28 604.6	1 763.3
Gompertz	公鸡日增重 ADG of male	0.919	2 178.0	18.6	682.1	母鸡日增重 ADG of female	0.885	2 085.8	17.7	681.8
Logistic		0.916	2 261.1	19.3	686.5		0.884	2 090.4	17.7	682.1
Bertalanffy		0.919	2 314.5	19.8	689.2		0.884	2 232.0	18.9	689.8
Gompertz	公鸡能量 TE of male	0.986	47 373 382.0	667 230.7	1 161.7	母鸡能量 TE of female	0.975	70 248 331.0	989 413.1	1 189.6
Logistic		0.985	49 681 328.0	699 737.0	1 165.0		0.974	74 567 968.0	1 050 253.0	1 193.9
Bertalanffy		0.985	279 065 428.0	3 930 499.0	1 287.6		0.975	271 045 323.0	3 817 540.0	1 285.5
Gompertz	公鸡体蛋白 BP of male	0.991	10 982.9	154.7	567.4	母鸡体蛋白 BP of female	0.987	11 709.3	164.9	572.0
Logistic		0.990	12 462.9	175.5	576.4		0.984	14 551.5	205.0	587.4
Bertalanffy		0.991	84 765.8	1 193.9	712.5		0.988	61 995.8	873.2	690.3
Gompertz	公鸡体脂肪 BF of male	0.970	18 865.1	265.7	605.8	母鸡体脂肪 BF of female	0.943	40 884.1	575.8	660.8
Logistic		0.970	18 892.4	266.1	605.9		0.943	41 025.4	577.8	661.0
Bertalanffy		0.970	66 868.9	941.8	695.7		0.943	102 014.0	1 436.8	725.7
Gompertz	公鸡总氨基酸 TAA of Male	0.981	11 631.0	166.2	564.6	母鸡总氨基酸 TAA of female	0.982	7 873.0	123.0	497.6
Logistic		0.979	12 749.1	182.1	571.0		0.977	9 940.3	155.3	512.5
Bertalanffy		0.981	44 939.5	642.0	659.2		0.983	26 737.7	417.8	575.9

指标 Indicator	模型参数Model parameter				决定系数 R²	拐点体重/g WIP	拐点日龄/d AIP	拐点最大增重/沉积/g MWG	拟合方程 Fitting equation
指标 Indicator	A	B	K		决定系数 R²	拐点体重/g WIP	拐点日龄/d AIP	拐点最大增重/沉积/g MWG	拟合方程 Fitting equation
体重BW	公Male	3 910.433	4.498	0.251	0.995	1 438.57	41.93	361.08	Y=3910.433e^{-exp-4.498(t-41.93)}
	母Female	2 595.569	4.266	0.315	0.976	954.86	32.24	300.78	Y=2595.569e^{-exp-4.266(t-32.24)}
日增重ADG	公Male	53.061	3.101	0.608	0.919	19.52	13.02	11.87	Y=53.061e^{-exp-3.101(t-13.02)}
	母Female	43.467	3.166	0.673	0.885	15.99	11.98	10.77	Y=43.467e^{-exp-3.166(t-11.98)}
总能TE	公Male	43 893.288	5.180	0.239	0.986	16 147.44	48.17	3 859.24	Y=43893.288e^{-exp-5.180(t-48.17)}
	母Female	42 379.077	5.185	0.234	0.976	15 590.39	49.23	3 648.15	Y=42379.077e^{-exp-5.185(t-49.23)}
体蛋白BP	公Male	963.907	4.846	0.213	0.991	354.60	51.86	75.53	Y=963.907e^{-exp-4.846(t-51.86)}
	母Female	773.356	4.661	0.220	0.987	284.50	48.98	62.59	Y=773.356e^{-exp-4.661(t-48.98)}
体脂肪BF	公Male	762.703	5.455	0.212	0.970	280.58	56.02	59.48	Y=762.703e^{-exp-5.455(t-56.02)}
	母Female	1 082.046	5.806	0.189	0.943	398.06	65.14	75.23	Y=1082.046e^{-exp-5.806(t-65.14)}
总氨基酸TAA	公Male	590.448	4.660	0.229	0.981	217.21	47.04	49.74	Y=590.448e^{-exp-4.660(t-47.04)}
	母Female	440.515	4.466	0.251	0.982	162.06	41.73	40.68	Y=440.515e^{-exp-4.466(t-41.73)}

Study on Growth Model and Nutrient Deposition Pattern of Rapidly-growing Yellow-feathered Chickens

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