ARTIFICIAL LONG DAYS INDUCE AN INCREASE OF MILK YIELD IN ALPINE GOAT
The aim of this study was to determine if the use of artificial long days during winter and spring improve milk production in Alpine goat raised in Northern Mexico. Control Group (CG; n=14), was exposed to naturals photoperiod variations of the region during the whole experimental period (10 h and 1...
| Autores: | , , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2010 |
| País: | México |
| Institución: | UNIVERSIDAD AUTÓNOMA DE YUCATÁN |
| Repositorio: | Tropical and Subtropical Agroecosystems |
| Idioma: | inglés |
| OAI Identifier: | oai:ojs.www.revista.ccba.uady.mx:article/733 |
| Acceso en línea: | https://www.revista.ccba.uady.mx/ojs/index.php/TSA/article/view/733 |
| Access Level: | acceso abierto |
| Palabra clave: | Veterinary Milk Yield, Milk Composition, Goats, Photoperiod rendimiento de leche; composición de la leche; cabras; fotoperiodo |
| Sumario: | The aim of this study was to determine if the use of artificial long days during winter and spring improve milk production in Alpine goat raised in Northern Mexico. Control Group (CG; n=14), was exposed to naturals photoperiod variations of the region during the whole experimental period (10 h and 19 min in the winter solstice), while the Experimental Group (EG; n=15), subject, from December 1st to April 19th, to a constant long day treatment (16 h light/8 h dark). At the onset of the trial (day 0 = 45 ± 0.6 postpartum days) milk yield was not different (P>0.05) between both groups. However, the EG group depicted an increase (15%) in milk yield from d-14 to d-112 with respect to the CG group (3.2 ± 0.07 vs. 2.7 ± 0.06 l/day/animal EG vs. CG; P |
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