Influence of levels of DL-malic acid supplementation on milk production and composition in lactating Pelibuey ewes and pre-weaning weight gain of their suckling kids
| Autor: | Jose Lenin Loya-Olguin, Alejandro Plascencia, J. Aguirre-Ortega, J.C. Ramirez-Ramirez, Y.S. Valdés-García, Alberto Barreras, Francisco Escalera-Valente, Sergio Martínez-González, A.A. Gómez-Danés |
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| Rok vydání: | 2014 |
| Předmět: |
General Veterinary
food and beverages Biology Total dissolved solids Milk production chemistry.chemical_compound fluids and secretions medicine.anatomical_structure chemistry Lactation medicine Ingestion Animal Science and Zoology Composition (visual arts) Dry matter Food science Malic acid medicine.symptom Weight gain |
| Zdroj: | Journal of Applied Animal Research. 43:92-96 |
| ISSN: | 0974-1844 0971-2119 |
| Popis: | Fifteen hair Pelibuey ewes were allotted individually to examine the effect of DL-malic acid (MA) supplementation level (0, 2 and 4 g of MA/kg of feed) during the first weeks of lactation on feed intake, milk yield and composition and pre-weaning weight gain of their suckling kids. Milk yield (P = 0.04) and milk efficiency (P = 0.03) increased linearly as MA supplementation increased, but dry matter intake (DMI) and milk composition (percentage of total solids, protein and fat) were not affected (P > 0.05). Increases on milk yield with no effect on milk composition led to a greater (linear effect, P = 0.02) milk protein yield. The ingestion of MA by the ewes resulted in a greater (linear, P < 0.01) average daily gain of their kids. Supplementation with 4 g of DL-ML per kilogram of feed increased milk production, milk protein yield and milk efficiency with no effect on DMI and milk composition. This milk production increase led to a greater daily gain of pre-weaned kids fed with milk as the unique feed source. |
| Databáze: | OpenAIRE |
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