Live weight and body conformation responses of culled local yellow cows fed maize silage and urea-treated rice straw in an intensive feedlot system in Northwest Vietnam
The aim of this study was to evaluate the effects of the substitution of maize silage (MS) for urea-treated rice straw (URS) in feedlot diets on finishing performance and body conformation traits of culled local Yellow cows; and to develop prediction equations for live weight (LW) of local Yellow cows using these body measurements. Twelve non-pregnant local Yellow cows (74.8 ± 23.6 months of age) were blocked by weight into 4 groups and then randomly allocated to one of three roughage treatments: 30% fresh maize + 70% URS (DM basis) (Control); 30% fresh maize + 40% URS + 30% MS (LMS); 30% fresh maize + 20% URS + 50% MS (HMS). Cows were individually supplemented with concentrate (1.1 kg DM/100 kg LW) and had free access to mixed roughage and water throughout the 12-week feeding trial, after a 2-week adaptation. Maize silage inclusion significantly increased daily feed intake and average daily gain (ADG) (P < 0.05). Moreover, the roughage containing 30% MS recorded the lowest feed conversion rate (7.8) and the highest final body condition score (3.43). However, LW and body measurements were not affected by the substitution (P > 0.05). Positive and significant correlations between LW and body measurements were observed. Regression analysis between chest girth (CG) and LW resulted in an equation with adjusted an R2 value of 82.0%. The multiple regression, which included CG, body length (BL) and withers height (WH) yielded the most reliable equation (adjusted R2 = 87.4%). The results indicate that MS can be a good alternative roughage source for feedlot culled local Yellow cows during winter in Northwest Vietnam. It is highly recommended that smallholder farmers raising non-pregnant Yellow cows use the regression equation: LW = 3.39 CG - 249 for prediction of LW in the absence of weighing scales.
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dig-cirad-fr-6010752024-01-29T04:10:35Z http://agritrop.cirad.fr/601075/ http://agritrop.cirad.fr/601075/ Live weight and body conformation responses of culled local yellow cows fed maize silage and urea-treated rice straw in an intensive feedlot system in Northwest Vietnam. Nguyen Don Viet, Tran Ngoc Bich Thi, Vang Me A., Le Huyen Thanh Thi, Nguyen Giang Truong Thien, Nguyen Quang Huy, Blanchard Melanie, Bailey Andrew, Ives Stephen. 2021. Advances in Animal and Veterinary Sciences, 9 (8) : 1283-1291.https:// doi.org/10.17582/journal.aavs/2021/9.8.1283.1291 <https:// doi.org/10.17582/journal.aavs/2021/9.8.1283.1291> Live weight and body conformation responses of culled local yellow cows fed maize silage and urea-treated rice straw in an intensive feedlot system in Northwest Vietnam Nguyen, Don Viet Tran, Ngoc Bich Thi Vang, Me A. Le, Huyen Thanh Thi Nguyen, Giang Truong Thien Nguyen, Quang Huy Blanchard, Melanie Bailey, Andrew Ives, Stephen eng 2021 Advances in Animal and Veterinary Sciences L02 - Alimentation animale alimentation à l'étable http://aims.fao.org/aos/agrovoc/c_24857 The aim of this study was to evaluate the effects of the substitution of maize silage (MS) for urea-treated rice straw (URS) in feedlot diets on finishing performance and body conformation traits of culled local Yellow cows; and to develop prediction equations for live weight (LW) of local Yellow cows using these body measurements. Twelve non-pregnant local Yellow cows (74.8 ± 23.6 months of age) were blocked by weight into 4 groups and then randomly allocated to one of three roughage treatments: 30% fresh maize + 70% URS (DM basis) (Control); 30% fresh maize + 40% URS + 30% MS (LMS); 30% fresh maize + 20% URS + 50% MS (HMS). Cows were individually supplemented with concentrate (1.1 kg DM/100 kg LW) and had free access to mixed roughage and water throughout the 12-week feeding trial, after a 2-week adaptation. Maize silage inclusion significantly increased daily feed intake and average daily gain (ADG) (P < 0.05). Moreover, the roughage containing 30% MS recorded the lowest feed conversion rate (7.8) and the highest final body condition score (3.43). However, LW and body measurements were not affected by the substitution (P > 0.05). Positive and significant correlations between LW and body measurements were observed. Regression analysis between chest girth (CG) and LW resulted in an equation with adjusted an R2 value of 82.0%. The multiple regression, which included CG, body length (BL) and withers height (WH) yielded the most reliable equation (adjusted R2 = 87.4%). The results indicate that MS can be a good alternative roughage source for feedlot culled local Yellow cows during winter in Northwest Vietnam. It is highly recommended that smallholder farmers raising non-pregnant Yellow cows use the regression equation: LW = 3.39 CG - 249 for prediction of LW in the absence of weighing scales. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/601075/1/Don%20et%20al%202021_Live%20Weight%20and%20Body%20Conformation%20Responses%20of%20Culled%20Local%20AAVS_9_8_1283-1291%20%281%29.pdf text Cirad license info:eu-repo/semantics/openAccess https://agritrop.cirad.fr/mention_legale.html https:// doi.org/10.17582/journal.aavs/2021/9.8.1283.1291 10.17582/journal.aavs/2021/9.8.1283.1291 info:eu-repo/semantics/altIdentifier/doi/10.17582/journal.aavs/2021/9.8.1283.1291 info:eu-repo/semantics/altIdentifier/purl/https:// doi.org/10.17582/journal.aavs/2021/9.8.1283.1291 |
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L02 - Alimentation animale alimentation à l'étable http://aims.fao.org/aos/agrovoc/c_24857 L02 - Alimentation animale alimentation à l'étable http://aims.fao.org/aos/agrovoc/c_24857 |
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L02 - Alimentation animale alimentation à l'étable http://aims.fao.org/aos/agrovoc/c_24857 L02 - Alimentation animale alimentation à l'étable http://aims.fao.org/aos/agrovoc/c_24857 Nguyen, Don Viet Tran, Ngoc Bich Thi Vang, Me A. Le, Huyen Thanh Thi Nguyen, Giang Truong Thien Nguyen, Quang Huy Blanchard, Melanie Bailey, Andrew Ives, Stephen Live weight and body conformation responses of culled local yellow cows fed maize silage and urea-treated rice straw in an intensive feedlot system in Northwest Vietnam |
description |
The aim of this study was to evaluate the effects of the substitution of maize silage (MS) for urea-treated rice straw (URS) in feedlot diets on finishing performance and body conformation traits of culled local Yellow cows; and to develop prediction equations for live weight (LW) of local Yellow cows using these body measurements. Twelve non-pregnant local Yellow cows (74.8 ± 23.6 months of age) were blocked by weight into 4 groups and then randomly allocated to one of three roughage treatments: 30% fresh maize + 70% URS (DM basis) (Control); 30% fresh maize + 40% URS + 30% MS (LMS); 30% fresh maize + 20% URS + 50% MS (HMS). Cows were individually supplemented with concentrate (1.1 kg DM/100 kg LW) and had free access to mixed roughage and water throughout the 12-week feeding trial, after a 2-week adaptation. Maize silage inclusion significantly increased daily feed intake and average daily gain (ADG) (P < 0.05). Moreover, the roughage containing 30% MS recorded the lowest feed conversion rate (7.8) and the highest final body condition score (3.43). However, LW and body measurements were not affected by the substitution (P > 0.05). Positive and significant correlations between LW and body measurements were observed. Regression analysis between chest girth (CG) and LW resulted in an equation with adjusted an R2 value of 82.0%. The multiple regression, which included CG, body length (BL) and withers height (WH) yielded the most reliable equation (adjusted R2 = 87.4%). The results indicate that MS can be a good alternative roughage source for feedlot culled local Yellow cows during winter in Northwest Vietnam. It is highly recommended that smallholder farmers raising non-pregnant Yellow cows use the regression equation: LW = 3.39 CG - 249 for prediction of LW in the absence of weighing scales. |
format |
article |
topic_facet |
L02 - Alimentation animale alimentation à l'étable http://aims.fao.org/aos/agrovoc/c_24857 |
author |
Nguyen, Don Viet Tran, Ngoc Bich Thi Vang, Me A. Le, Huyen Thanh Thi Nguyen, Giang Truong Thien Nguyen, Quang Huy Blanchard, Melanie Bailey, Andrew Ives, Stephen |
author_facet |
Nguyen, Don Viet Tran, Ngoc Bich Thi Vang, Me A. Le, Huyen Thanh Thi Nguyen, Giang Truong Thien Nguyen, Quang Huy Blanchard, Melanie Bailey, Andrew Ives, Stephen |
author_sort |
Nguyen, Don Viet |
title |
Live weight and body conformation responses of culled local yellow cows fed maize silage and urea-treated rice straw in an intensive feedlot system in Northwest Vietnam |
title_short |
Live weight and body conformation responses of culled local yellow cows fed maize silage and urea-treated rice straw in an intensive feedlot system in Northwest Vietnam |
title_full |
Live weight and body conformation responses of culled local yellow cows fed maize silage and urea-treated rice straw in an intensive feedlot system in Northwest Vietnam |
title_fullStr |
Live weight and body conformation responses of culled local yellow cows fed maize silage and urea-treated rice straw in an intensive feedlot system in Northwest Vietnam |
title_full_unstemmed |
Live weight and body conformation responses of culled local yellow cows fed maize silage and urea-treated rice straw in an intensive feedlot system in Northwest Vietnam |
title_sort |
live weight and body conformation responses of culled local yellow cows fed maize silage and urea-treated rice straw in an intensive feedlot system in northwest vietnam |
url |
http://agritrop.cirad.fr/601075/ http://agritrop.cirad.fr/601075/1/Don%20et%20al%202021_Live%20Weight%20and%20Body%20Conformation%20Responses%20of%20Culled%20Local%20AAVS_9_8_1283-1291%20%281%29.pdf |
work_keys_str_mv |
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