Intensive Sheep Meat Production Systems: The Use of Beef Fat or Sugar Cane Molasses as Energy Sources and Performance of Hair Sheep Lambs Fed Total Mixed Rations
<p id="p1">Energy is an important component in total mixed rations (TMR) for ruminants, most commonly sugars (as sugarcane molasses, SCM) and animal fats (rendered beef fat, RBF) are often included in finishing lambs. The effects of feeding TMR with RBF, SCM or control were determined on lamb perfor...
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| Autores principales: | , , , , , , , , |
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| Formato: | Capítulo de libro |
| Lenguaje: | inglés |
| Publicado: |
IntechOpen
2025
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| Materias: | |
| Acceso en línea: | https://www.intechopen.com/chapters/89788 |
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| Sumario: | <p id="p1">Energy is an important component in total mixed rations (TMR) for ruminants, most commonly sugars (as sugarcane molasses, SCM) and animal fats (rendered beef fat, RBF) are often included in finishing lambs. The effects of feeding TMR with RBF, SCM or control were determined on lamb performance. Lambs (103) were divided into three groups by sex and fed the three rations; rations were iso-proteinaceous and iso-energetic. Lambs were allotted by sex, breed and weight, and lambs were weighed every 14 days. Data was analyzed using a general linear model for average daily gain (ADG), feed intake (FI), feed conversion (FC) and scrotal circumference (SC) to determine the effects of sex, ration, breed, nandrolone and their interactions. Sex affected ADG (P<0.05), ram lambs gained more (159.8 g) than ewe lambs (119.1 g); the lambs fed RBF gained more (150.0 g) than control (138.8 g) or SCM (129.4 g) rations. Lambs fed SCM consumed more (P<0.05) than the lambs fed RBF or control rations. Main factors studied, sex, TMR and nandrolone affected (P<0.05) FC. The interactions sex*ration, sex*nandrolone and ration*nandrolone were significant (P<0.05) for ADG, whereas sex*breed, sex*ration, sex*nandrolone and ration*nandrolone were significant (P<0.05) for FI and sex*ration and ration*nandrolone were significant (P<0.05) for FC. Lambs fed RBF gained more weight than lambs fed the other rations, ram lambs also gained more weight than the ewe lambs and also lambs treated with nandrolone gained more weight than the non-treated lambs.</p> |
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| ISBN: | 978-0-85014-402-4 |
| DOI: | 10.5772/intechopen.115608 |