Predicting the Digestive Tract Development and Growth Performance of Goat Kids Using Sigmoidal Models
The transition from monogastric to rumination stage is crucial in ruminants’ growth to avoid stressors—weaning and neonatal mortalities. Poor growth of the digestive tract could adversely affect the performance of the animal. Modeling informative growth curves is of great importance for a better und...
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MDPI AG
2021-03-01
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| Series: | Animals |
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| Online Access: | https://www.mdpi.com/2076-2615/11/3/757 |
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| author | Mahmoud Abdelsattar Yimin Zhuang Kai Cui Yanliang Bi Naifeng Zhang |
| author_facet | Mahmoud Abdelsattar Yimin Zhuang Kai Cui Yanliang Bi Naifeng Zhang |
| author_sort | Mahmoud Abdelsattar |
| collection | DOAJ |
| description | The transition from monogastric to rumination stage is crucial in ruminants’ growth to avoid stressors—weaning and neonatal mortalities. Poor growth of the digestive tract could adversely affect the performance of the animal. Modeling informative growth curves is of great importance for a better understanding of the effective development pattern, in order to optimize feeding management system, and to achieve more production efficiency. However, little is known about the digestive tract growth curves. For this reason, one big goat farm of Laiwu black breed was chosen as a basis of this study. Forty-eight kids belonging to eight-time points (1, 7, 14, 28, 42, 56, 70, and 84 d; 6 kids for each) were selected and slaughtered. The body weight, body size indices, rumen pH, and stomach parts were determined and fitted to the polynomial and sigmoidal models. In terms of goodness of fit criteria, the Gompertz model was the best model for body weight, body oblique length, tube, and rumen weight. Moreover, the Logistic model was the best model for carcass weight, body height, and chest circumference. In addition, the Quadratic model showed the best fit for dressing percentage, omasum weight, abomasum weight, and rumen volume. Moreover, the cubic model best fitted the ruminal pH and reticulum percentage. The Weibull model was the best model for the reticulum weight and omasum percentage, while the MMF model was the best model describing the growth of chest depth, rumen percentage, and abomasum percentage. The model parameters, R squared, inflection points, area under curve varied among the different dependent variables. The Pearson correlation showed that the digestive tract development was more correlated with age than body weight, but the other variables were more correlated with body weight than age. The study demonstrated the use of empirical sigmoidal and polynomial models to predict growth rates of the digestive tract at relevant age efficiently. |
| first_indexed | 2024-03-10T13:22:56Z |
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| institution | Directory Open Access Journal |
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| language | English |
| last_indexed | 2024-03-10T13:22:56Z |
| publishDate | 2021-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Animals |
| spelling | doaj.art-1e629fa668c941c99ec9f703f494d0ec2023-11-21T09:50:16ZengMDPI AGAnimals2076-26152021-03-0111375710.3390/ani11030757Predicting the Digestive Tract Development and Growth Performance of Goat Kids Using Sigmoidal ModelsMahmoud Abdelsattar0Yimin Zhuang1Kai Cui2Yanliang Bi3Naifeng Zhang4Key Laboratory of Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, ChinaKey Laboratory of Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, ChinaKey Laboratory of Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, ChinaKey Laboratory of Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, ChinaKey Laboratory of Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, ChinaThe transition from monogastric to rumination stage is crucial in ruminants’ growth to avoid stressors—weaning and neonatal mortalities. Poor growth of the digestive tract could adversely affect the performance of the animal. Modeling informative growth curves is of great importance for a better understanding of the effective development pattern, in order to optimize feeding management system, and to achieve more production efficiency. However, little is known about the digestive tract growth curves. For this reason, one big goat farm of Laiwu black breed was chosen as a basis of this study. Forty-eight kids belonging to eight-time points (1, 7, 14, 28, 42, 56, 70, and 84 d; 6 kids for each) were selected and slaughtered. The body weight, body size indices, rumen pH, and stomach parts were determined and fitted to the polynomial and sigmoidal models. In terms of goodness of fit criteria, the Gompertz model was the best model for body weight, body oblique length, tube, and rumen weight. Moreover, the Logistic model was the best model for carcass weight, body height, and chest circumference. In addition, the Quadratic model showed the best fit for dressing percentage, omasum weight, abomasum weight, and rumen volume. Moreover, the cubic model best fitted the ruminal pH and reticulum percentage. The Weibull model was the best model for the reticulum weight and omasum percentage, while the MMF model was the best model describing the growth of chest depth, rumen percentage, and abomasum percentage. The model parameters, R squared, inflection points, area under curve varied among the different dependent variables. The Pearson correlation showed that the digestive tract development was more correlated with age than body weight, but the other variables were more correlated with body weight than age. The study demonstrated the use of empirical sigmoidal and polynomial models to predict growth rates of the digestive tract at relevant age efficiently.https://www.mdpi.com/2076-2615/11/3/757goat kidsrumen developmentgrowth curveinflection pointarea under the curve |
| spellingShingle | Mahmoud Abdelsattar Yimin Zhuang Kai Cui Yanliang Bi Naifeng Zhang Predicting the Digestive Tract Development and Growth Performance of Goat Kids Using Sigmoidal Models Animals goat kids rumen development growth curve inflection point area under the curve |
| title | Predicting the Digestive Tract Development and Growth Performance of Goat Kids Using Sigmoidal Models |
| title_full | Predicting the Digestive Tract Development and Growth Performance of Goat Kids Using Sigmoidal Models |
| title_fullStr | Predicting the Digestive Tract Development and Growth Performance of Goat Kids Using Sigmoidal Models |
| title_full_unstemmed | Predicting the Digestive Tract Development and Growth Performance of Goat Kids Using Sigmoidal Models |
| title_short | Predicting the Digestive Tract Development and Growth Performance of Goat Kids Using Sigmoidal Models |
| title_sort | predicting the digestive tract development and growth performance of goat kids using sigmoidal models |
| topic | goat kids rumen development growth curve inflection point area under the curve |
| url | https://www.mdpi.com/2076-2615/11/3/757 |
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