Effect of supplementing with protected fat on meat production and quality of mexican dual purpose steers
Journal Title: Revista MVZ Cordoba - Year 2011, Vol 16, Issue 1
Abstract
Objective. To evaluate performance and meat quality response to protected fat (PF) addition to diets for dual purpose steers. Materials and methods. Forty five commercial crossed steers (B. taurus x B. indicus) were used. They were allocated into three blocks of 15 animals, according to live-weight into small, medium and large steers. Each block was divided into three groups of 5 animals, and then assigned at random to three treatments: 0, 1.5 and 3% of PF, within a completely randomized block design. Results. There were not differences (p>0.05) on animal performance. Backfat was greater (p<0.05) on animals fed at 0% PF compared to 3% of GP (9.6 vs 8.6 mm). There were not differences (p>0.05) on Longissimus muscle area (LMA) nor on pH. Meat crude protein increased (p<0.05) on animals fed at 3% of PF, but it decreased (p<0.05) with diets at 1.5 and 0% of PF (22.77 vs 21.57, 21.64, respectively). Fatty acid profile was not different (p>0.05) between treatments. Conclusions. Adding PF to diets for dual purpose feedlot steers does not modify animal performance, but it improves some carcass and meat characteristics. It is suggested to do more research, using the same kind of animals, but taking into consideration higher levels of PF to those used in this study, since the response could improve.
Authors and Affiliations
Juan Reyes D, M. Sc| Colegio de Postgraduados, Ganadería. Montecillo. Texcoco. 56230. México., Omar Hernández M, Ph. D *| Colegio de Postgraduados, Ganadería. Montecillo. Texcoco. 56230. México.Correspondencia: ohmendo@colpos.mx, Efrén Ramírez B, Ph. D| Colegio de Postgraduados, Ganadería. Montecillo. Texcoco. 56230. México., Isabel Guerrero L, Ph. D| Universidad Autónoma Metropolitana-I. Iztapalapa. México D.F. 55535. México., Gilberto Aranda O, Ph. D| Universidad Autónoma Chapingo. Departamento de Zootecnia. Chapingo, Mexico. 56230. México., German Mendoza M, Ph. D| Universidad Autónoma Metropolitana-X. Coyoacán. México. D.F. 04960. México.
Keywords
Related Articles
- EP ID EP3182
- DOI -
- Views 351
- Downloads 23
Estimation of genetic and phenotypic parameters for production traits in Holstein and Jersey from Colombia
Objective. Determine the genetic and phenotypic parameters for milk yield, fat percentage, protein percentage and somatic cell score. Materials and methods. 18134 lactation records were used to Holstein and 1377 lactatio...
Evaluation of Digestible lysine levels in diets with high energy density for finishing pigs
Objective. To evaluate the effects of different levels of digestible lysine in diets with high energy density on productive performance and carcass characteristics of finishing pigs. Materials and Methods. Seventy crossb...
STRUCTURAL ANALYSIS OF BEEF AND HAM DURING THE COOKING PROCESS AND STORAGE TEMPERATURE
Objetive: To determine the structural changes on the pork ham by effect of the cooking process and the temperature of storing. Materials and methods. Six treatments were made, in those three internal temperatures were us...
Cellulolytic and Butyrivibrio fibrisolvens bacteria population density, after supplementing fodder diets (Pennisetum clandestinum)
Objective. Determine the population density of cellulolytic bacteria, Butyrivibrio fibrisolvens and the concentration of vaccenic acid, by supplementing diets consisting of kikuyu grass (Pennisetum clandestinum Hoechst....
EVALUACIÓN DEL RÉGIMEN ALIMENTARIO DEL BRAGRE BLANCO Sorobium cuspicaudus EN EL BAJO SINÚ, COLOMBIA