Determination of Residual Feed Intake and Analysis of Its Correlation with Feed Utilization Efficiency Correlated Traits of Yuzhou Geese

LI Qin; ZHAO Xianzhi; WANG Lihui; ZHANG Keshan; XIE Youhui; LI Jing; WANG Qigui

doi:10.3969/j.issn.1006-267x.2022.11.019

2022 , Vol. 34 >Issue 11: 6984 - 6993

DOI: https://doi.org/10.3969/j.issn.1006-267x.2022.11.019

RESEARCH PAPER

Determination of Residual Feed Intake and Analysis of Its Correlation with Feed Utilization Efficiency Correlated Traits of Yuzhou Geese

LI Qin ,
ZHAO Xianzhi ,
WANG Lihui ,
ZHANG Keshan ,
XIE Youhui ,
LI Jing ,
WANG Qigui

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1. Chongqing Academy of Animal Science, Chongqing 402460, China;
2. Chongqing Engineering Research Center of Goose Genetic Improvement, Chongqing 402460, China

Received date: 2022-03-31

Online published: 2022-11-14

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Abstract

The purpose of this experiment was to study on the residual feed intake (RFI) and the relationships between RFI and body weight (BW), feed intake (FI), average daily gain (ADG), feed conversion ratio (FCR) of geese. At the nutritional level of 12.13 MJ/kg of dietary metabolic energy and 17.25% of crude protein, the FI and BW of 240 Ⅲ line Yuzhou white male geese at the 3rd, 4th, 6th, 8th and 10th week of age were measured by single cage feeding method. The RFI, FI, ADG, FCR and the correlation coefficients between these traits of geese at 3 to 4 weeks of age, 4 to 6 weeks of age, 6 to 8 weeks of age, 8 to 10 weeks of age, 3 to 6 weeks of age, 4 to 8 weeks of age, 3 to 8 weeks of age, 3 to 10 weeks of age were obtained. The results showed that the RFI varied widely at each measurement phase of geese, the highest value was 2 157.02 g and the lowest value was -2 482.46 g at 4 to 8 weeks of age, the highest value was 2 675.55 g and the lowest value was -2 476.00 g at 3 to 8 weeks of age, and the highest value was 1 845.27 g and the lowest value was -2 488.97 g at 3 to 10 weeks of age, indicating that the selection space of RFI was large. There was almost a positive correlation between RFI and FI in each test stage, and the correlation coefficients between RFI and FI of geese at 3 to 10 weeks of age was 0.689 (P<0.01), indicating that the selection of RFI could affect FI. There was a positive correlation between RFI and FCR in each test stage of geese, and the correlation coefficients between RFI and FCR at 3 to 6 weeks of age, 4 to 8 weeks of age, 3 to 8 weeks of age, 3 to 10 weeks of age were 0.701, 0.604, 0.651 and 0.572 (P<0.01), respectively, suggesting that RFI could effectively reflect the feed utilization efficiency of geese. The correlation coefficients between RFI at 4 to 8 weeks of age and 3 to 8 weeks of age and FCR in the whole period (3 to 10 weeks of age) were 0.422 and 0.525 (P<0.01), respectively, indicating that the RFI at 4 to 8 weeks of age and 3 to 8 weeks of age could better reflect the FCR in the whole period. There was no significant correlation (P>0.05) or a low significant or extremely significant negative correlation (P<0.05 or P<0.01) between RFI and BW, ADG of geese in each test stage, indicating that the selection of RFI was almost unaffected by BW or ADG. In conclusion, at the nutritional level of 12.13 MJ/kg of dietary metabolic energy and 17.25% of crude protein, the variation of RFI of geese is large in different test stages, and the RFI is positively correlated with FI and FCR. There is no significant or a low negative correlation between RFI and BW, ADG. The selection of RFI can affect the FI without affecting the BW or weight gain, and effectively improve the feed utilization efficiency of Yuzhou white geese.

Key words： geese; residual feed intake; feed utilization efficiency; correlation analysis

Cite this article

LI Qin , ZHAO Xianzhi , WANG Lihui , ZHANG Keshan , XIE Youhui , LI Jing , WANG Qigui . Determination of Residual Feed Intake and Analysis of Its Correlation with Feed Utilization Efficiency Correlated Traits of Yuzhou Geese[J]. Chinese Journal of Animal Nutrition, 2022 , 34(11) : 6984 -6993 . DOI: 10.3969/j.issn.1006-267x.2022.11.019

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