Effects of increasing lysine on carcass composition and cutting yields of immunologically castrated male pigs
作者： DD Boler , LW Kutzler , DM Meeuwse , VL King , DR Campion
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摘要: The objective of this experiment was to determine if increasing lysine in the diets immu- nologically castrated (IC) male pigs would increase per- centage fat free lean and carcass cutting yields when compared with physical castrates. anti-gonado- tropin-releasing factor (GnRF) immunological product (Improvest, Pfizer Animal Health) is used worldwide immunologically castrate entire control boar taint take advantage inherent ability deposit more muscle, less fat, grow efficiently than physically males. immunization process essentially allows pig as an for most its life then removes any odor (boar taint) before slaughter. Reported meat advantages may also provide eco- nomic benefits domestic industry. Approxi- mately 1,200 (physical castrates, IC males, males) were each assigned 1 4 diet programs which differed content. In case, fed a conventional step-down program that culminated following concentrations late finishing diet: castrates low (0.7%), low/medium (0.8%), medium/high (0.9%), high (1.0%), males (1.0%). At 25 wk age (5 post-second injection), individually weighed 2 (n = 96) pen closest median BW selected slaughtered. right side dissected into soft tissue, skin, bone. Proxi- mate composition determined on tissue percentage fat-free lean. left initially fabricated ham, loin, belly, whole shoulder. Each primal piece again further respec- tive subprimal cuts. Immunological castration did not change (P > 0.05) shear force values or ultimate pH either Marbling appeared decrease dietary increased among As expected, had greater < but Immunologically medi- um/high Lean yield Overall, im- proved cutability, lean, no effect pork quality
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animalsciencepublications.org 参考文章(23)
K F Goerl, S J Eilert, R W Mandigo, H Y Chen, P S Miller, Pork characteristics as affected by two populations of swine and six crude protein levels. Journal of Animal Science. ,vol. 73, pp. 3621- 3626 ,(1995) , 10.2527/1995.73123621X
W. T. Oliver, I. McCauley, R. J. Harrell, D. Suster, D. J. Kerton, F. R. Dunshea, A gonadotropin-releasing factor vaccine (Improvac) and porcine somatotropin have synergistic and additive effects on growth performance in group-housed boars and gilts. Journal of Animal Science. ,vol. 81, pp. 1959- 1966 ,(2003) , 10.2527/2003.8181959X
C Szabó, A J Jansman, L Babinszky, E Kanis, M W Verstegen, Effect of dietary protein source and lysine:DE ratio on growth performance, meat quality, and body composition of growing-finishing pigs. Journal of Animal Science. ,vol. 79, pp. 2857- 2865 ,(2001) , 10.2527/2001.79112857X
D P Witte, M Ellis, F K McKeith, E R Wilson, Effect of dietary lysine level and environmental temperature during the finishing phase on the intramuscular fat content of pork Journal of Animal Science. ,vol. 78, pp. 1272- 1276 ,(2000) , 10.2527/2000.7851272X
C. Rikard-Bell, M. A. Curtis, R. J. van Barneveld, B. P. Mullan, A. C. Edwards, N. J. Gannon, D. J. Henman, P. E. Hughes, F. R. Dunshea, Ractopamine hydrochloride improves growth performance and carcass composition in immunocastrated boars, intact boars, and gilts. Journal of Animal Science. ,vol. 87, pp. 3536- 3543 ,(2009) , 10.2527/JAS.2009-2002
Marina Gispert, M. Àngels Oliver, Antonio Velarde, Paloma Suarez, Jesús Pérez, Maria Font i Furnols, Carcass and meat quality characteristics of immunocastrated male, surgically castrated male, entire male and female pigs Meat Science. ,vol. 85, pp. 664- 670 ,(2010) , 10.1016/J.MEATSCI.2010.03.021
G Zamaratskaia, HK Andersson, G Chen, K Andersson, A Madej, K Lundström, Effect of a Gonadotropin‐releasing Hormone Vaccine (ImprovacTM) on Steroid Hormones, Boar Taint Compounds and Performance in Entire Male Pigs Reproduction in Domestic Animals. ,vol. 43, pp. 351- 359 ,(2008) , 10.1111/J.1439-0531.2007.00914.X
D.N D’Souza, B.P Mullan, The effect of genotype, sex and management strategy on the eating quality of pork Meat Science. ,vol. 60, pp. 95- 101 ,(2002) , 10.1016/S0309-1740(01)00112-7
Jakob Babol, E.James Squires, Quality of meat from entire male pigs Food Research International. ,vol. 28, pp. 201- 212 ,(1995) , 10.1016/0963-9969(95)93528-3
M Font i Furnols, J González, M Gispert, MA Oliver, M Hortós, J Pérez, P Suárez, L Guerrero, None, Sensory characterization of meat from pigs vaccinated against gonadotropin releasing factor compared to meat from surgically castrated, entire male and female pigs. Meat Science. ,vol. 83, pp. 438- 442 ,(2009) , 10.1016/J.MEATSCI.2009.06.020