Influence of different amounts of milk replacer on esophageal leakage, rumen fermentation characteristics, gastrointestinal tract passage rate, and microbial crude protein synthesis of nursling animals
ABSTRACT: We aimed to evaluate the esophageal leakage, ruminal fermentation characteristics, passage rate, and microbial crude protein (MCP) synthesis and its flow in the immature rumen of preweaning animals fed different amounts of liquid diet. Sixty newborn male kids, not castrated, from Saanen an...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-06-01
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| Series: | Journal of Dairy Science |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0022030225001985 |
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| author | Jardeson de Souza Pinheiro Paulo Sergio Dornelas Silva Dhones Rodrigues de Andrade Erollykens Ferreira Santos Adailton Camêlo Costa Nathalia Veloso Trópia Sebastião de Campos Valadares Filho Edenio Detmann Simone Eliza Facione Guimarães Marcos Inacio Marcondes |
| author_facet | Jardeson de Souza Pinheiro Paulo Sergio Dornelas Silva Dhones Rodrigues de Andrade Erollykens Ferreira Santos Adailton Camêlo Costa Nathalia Veloso Trópia Sebastião de Campos Valadares Filho Edenio Detmann Simone Eliza Facione Guimarães Marcos Inacio Marcondes |
| author_sort | Jardeson de Souza Pinheiro |
| collection | DOAJ |
| description | ABSTRACT: We aimed to evaluate the esophageal leakage, ruminal fermentation characteristics, passage rate, and microbial crude protein (MCP) synthesis and its flow in the immature rumen of preweaning animals fed different amounts of liquid diet. Sixty newborn male kids, not castrated, from Saanen and Swiss Alpine breeds, with BW of 3.834 ± 0.61 kg (mean ± SD), were distributed in a randomized block design in a 2 × 6 factorial scheme composed of 2 nutritional plans (either 1 L or 2 L of milk replacer [MR] per kid per day), and 6 time points of slaughter after feeding. Breeds were the blocking factor in the model (random effect). All kids were slaughtered at 45 d of life. Esophageal leakage was not affected by the nutritional plan. Esophageal leakage into the rumen averaged 56.0%, whereas 42.0% leaked directly into the abomasum. Furthermore, a low proportion (2.0%) of the MR escaped immediately into the small intestine. Passage rates were also not affected by the nutritional plan (P > 0.050). Milk replacer passage rates were 0.290 h−1, 0.307 h−1, and 0.369 h−1, and their respective mean retention times were 3.44 h, 3.22 h, and 6.06 h in the kids' rumen, abomasum, and small intestine, respectively. Microbial crude protein synthesis was not affected by the nutritional plan, averaging 1.95 (g/day) for the kids. Lastly, most ruminal fermentation characteristics were affected by the nutritional plans and slaughter time after feeding, such as ammonia, soluble protein, and VFA. In conclusion, a high MR allowance influences performance and rumen parameters without affecting esophageal leakage, passage rates, and MCP synthesis in preweaning dairy kids. |
| format | Article |
| id | doaj-art-a675bbbcf0924270bde859381bcba42c |
| institution | OA Journals |
| issn | 0022-0302 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Dairy Science |
| spelling | doaj-art-a675bbbcf0924270bde859381bcba42c2025-08-20T01:55:33ZengElsevierJournal of Dairy Science0022-03022025-06-0110865816583110.3168/jds.2024-25695Influence of different amounts of milk replacer on esophageal leakage, rumen fermentation characteristics, gastrointestinal tract passage rate, and microbial crude protein synthesis of nursling animalsJardeson de Souza Pinheiro0Paulo Sergio Dornelas Silva1Dhones Rodrigues de Andrade2Erollykens Ferreira Santos3Adailton Camêlo Costa4Nathalia Veloso Trópia5Sebastião de Campos Valadares Filho6Edenio Detmann7Simone Eliza Facione Guimarães8Marcos Inacio Marcondes9Department of Animal Science, Viçosa Federal University, Viçosa, MG 36570-900, BrazilDepartment of Animal Science, Viçosa Federal University, Viçosa, MG 36570-900, BrazilDepartment of Animal Science, Viçosa Federal University, Viçosa, MG 36570-900, BrazilDepartment of Animal Science, Viçosa Federal University, Viçosa, MG 36570-900, BrazilDepartment of Animal Science, Viçosa Federal University, Viçosa, MG 36570-900, BrazilDepartment of Animal Science, Viçosa Federal University, Viçosa, MG 36570-900, BrazilDepartment of Animal Science, Viçosa Federal University, Viçosa, MG 36570-900, BrazilDepartment of Animal Science, Viçosa Federal University, Viçosa, MG 36570-900, BrazilDepartment of Animal Science, Viçosa Federal University, Viçosa, MG 36570-900, BrazilDepartment of Animal Sciences, Washington State University, Pullman, WA 99164; William H. Miner Agricultural Research Institute, Chazy, NY 12921; Corresponding authorABSTRACT: We aimed to evaluate the esophageal leakage, ruminal fermentation characteristics, passage rate, and microbial crude protein (MCP) synthesis and its flow in the immature rumen of preweaning animals fed different amounts of liquid diet. Sixty newborn male kids, not castrated, from Saanen and Swiss Alpine breeds, with BW of 3.834 ± 0.61 kg (mean ± SD), were distributed in a randomized block design in a 2 × 6 factorial scheme composed of 2 nutritional plans (either 1 L or 2 L of milk replacer [MR] per kid per day), and 6 time points of slaughter after feeding. Breeds were the blocking factor in the model (random effect). All kids were slaughtered at 45 d of life. Esophageal leakage was not affected by the nutritional plan. Esophageal leakage into the rumen averaged 56.0%, whereas 42.0% leaked directly into the abomasum. Furthermore, a low proportion (2.0%) of the MR escaped immediately into the small intestine. Passage rates were also not affected by the nutritional plan (P > 0.050). Milk replacer passage rates were 0.290 h−1, 0.307 h−1, and 0.369 h−1, and their respective mean retention times were 3.44 h, 3.22 h, and 6.06 h in the kids' rumen, abomasum, and small intestine, respectively. Microbial crude protein synthesis was not affected by the nutritional plan, averaging 1.95 (g/day) for the kids. Lastly, most ruminal fermentation characteristics were affected by the nutritional plans and slaughter time after feeding, such as ammonia, soluble protein, and VFA. In conclusion, a high MR allowance influences performance and rumen parameters without affecting esophageal leakage, passage rates, and MCP synthesis in preweaning dairy kids.http://www.sciencedirect.com/science/article/pii/S0022030225001985esophageal groovemicrobial DNAmicrobial efficiencyruminal emptyingsuckling kids |
| spellingShingle | Jardeson de Souza Pinheiro Paulo Sergio Dornelas Silva Dhones Rodrigues de Andrade Erollykens Ferreira Santos Adailton Camêlo Costa Nathalia Veloso Trópia Sebastião de Campos Valadares Filho Edenio Detmann Simone Eliza Facione Guimarães Marcos Inacio Marcondes Influence of different amounts of milk replacer on esophageal leakage, rumen fermentation characteristics, gastrointestinal tract passage rate, and microbial crude protein synthesis of nursling animals Journal of Dairy Science esophageal groove microbial DNA microbial efficiency ruminal emptying suckling kids |
| title | Influence of different amounts of milk replacer on esophageal leakage, rumen fermentation characteristics, gastrointestinal tract passage rate, and microbial crude protein synthesis of nursling animals |
| title_full | Influence of different amounts of milk replacer on esophageal leakage, rumen fermentation characteristics, gastrointestinal tract passage rate, and microbial crude protein synthesis of nursling animals |
| title_fullStr | Influence of different amounts of milk replacer on esophageal leakage, rumen fermentation characteristics, gastrointestinal tract passage rate, and microbial crude protein synthesis of nursling animals |
| title_full_unstemmed | Influence of different amounts of milk replacer on esophageal leakage, rumen fermentation characteristics, gastrointestinal tract passage rate, and microbial crude protein synthesis of nursling animals |
| title_short | Influence of different amounts of milk replacer on esophageal leakage, rumen fermentation characteristics, gastrointestinal tract passage rate, and microbial crude protein synthesis of nursling animals |
| title_sort | influence of different amounts of milk replacer on esophageal leakage rumen fermentation characteristics gastrointestinal tract passage rate and microbial crude protein synthesis of nursling animals |
| topic | esophageal groove microbial DNA microbial efficiency ruminal emptying suckling kids |
| url | http://www.sciencedirect.com/science/article/pii/S0022030225001985 |
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