Effect of feeding calcium soaps on double purpose cows.
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| Autores: | , , , , |
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| 格式: | artículo original |
| 状态: | Versión publicada |
| Fecha de Publicación: | 2011 |
| 实物特征: | The effect of feeding with protected fats on doublepurpose cows. The objective of this study was to determinethe reduction of post-partum anestrum in cows by supplyingprotected fats. The study was conducted ad the Experimentalfi eld La Posta, Paso del Toro, Veracruz, México. The cowswere randomnly assigned to two groups: suplementationwith protected fats (GP; T1, n= 20) or tallow (SGP; T2,n=20) at 2.7% of a dry weight-based diet. Milk production,physical condition (CC), progesterone and tiroid hormonelevels were registered. (T3 and T4). Sources of variationwere diet, genetic group and number of calf births, and thedependent variables PL were days to the fi rst estrus (DPE),CC and meatabolite levels. Correlations among variableswere conducted. No effect (p>0,05) of treatments on milkproduction were observed, but signifi cant effects (p<0,01) forthe fi st corpus luteum. Physical condition 4,5 had the best milkproduction (p<0,01; 16,68±1,076 L/day) and lower number ofdays to the fi rst estrum (p<0,05; 31,71±7,5 d). Tiroid hormonesdid not show differences (p>0,05) among treatments: T1= 72,4and T2 = 72,72 ug/dl. Insuline was higher (p<0,05) in T2 (6,87UI) than in T1 (5,26 UI). It is concluded that the type of fatdid not affect milk production but stimulated the resumptionof ovarian activity and reduced the concentration of insulin inthe serum. |
| País: | Portal de Revistas UCR |
| 机构: | Universidad de Costa Rica |
| Repositorio: | Portal de Revistas UCR |
| 语言: | Español |
| OAI Identifier: | oai:portal.ucr.ac.cr:article/11829 |
| 在线阅读: | https://revistas.ucr.ac.cr/index.php/agromeso/article/view/11829 |
| Palabra clave: | Fatty acids ovarian activity Insulin. Ácidos grasos actividad ovárica insulina. |