Comparison of Performance, Serum Biochemical Indices, Carcass Characteristics and Meat Quality of Male and Female Growing Donkeys
XING Jingya1,2, QU Honglei2, CHONG Xiaoyu1, FENG Yulong2, LIU Mingli1, LIU Guiqin1
1. College of Agronomy Liaocheng University, Shandong Engineering Technology Research Center for Efficient Breeding and Ecological Feeding of Black Donkey, Shandong Donkey Industry Technology Collaborative Innovation Center, Liaocheng 252000, China;
2. Engineering Research Center of Gelatin-Based Traditional Chinese Mediciine, Dong-E-E-Jiao Co. Ltd., Liaocheng 252201, China
Abstract:This experiment was aimed to compared the difference in performance, serum biochemical indices, carcass characteristics and meat quality of male and female growing donkeys. Twenty 7 to 8-month-old improved Dezhou donkeys with similar body weight of (149.50±7.20) kg and similar parity were selected, divided into 2 groups by sex, each group contained 2 replicates with 5 donkeys per replicate. The concentrate was feed based on the body weight of 1.5%, and soybean straw used as roughage, and the ratio of concentrate to roughage was 4:6. The adaptation period lasted for 7 days and the formal period lasted for 270 days. The results showed as follows:1) the dry matter intake and average daily gain of female donkeys were higher than those of male donkeys, but had no significant difference (P>0.05); the body length, chest width, skinning rate and collagen content of female donkeys were significantly lower than those of male donkeys (P<0.05 or P<0.01), and the bust of female donkeys was significantly higher than that of male donkeys (P<0.05). 2) The serum albumin to globulin ratio of female donkeys was significantly higher than that of male donkeys (P<0.05), and the serum alkaline phosphatase activity of female donkeys was significantly lower than that of male donkeys (P<0.01). There were no significant differences in other serum biochemical indices between female donkeys and male donkeys (P>0.05). 3) The carcass rate, abdominal fat rate of female donkeys was significantly higher than that of male donkeys (P<0.05), and the shear force, marble rating and free fatty acid content in muscle of female donkeys was significantly higher than that of male donkeys (P<0.01). There were no significant differences in other carcass characteristics and meat quality indices between female donkeys and male donkeys (P>0.05). In conclusion, under the conditions of this experiment, the performance, carcass characteristics and meat quality of female donkeys are better than those of male donkeys, but the skinning rate and skin collagen content of male donkeys are higher than those of female donkeys.
KLOSTERMAN E W, CAHILL V R, PARKER C F.A comparison of the Hereford and Charolais breeds and their crosses under two systems of management[J].Transactions of the ASAE, 1968, 35(5):1623-1631.
SALIM H M, LEE H R, JO C, et al.Effect of sex and dietary organic zinc on growth performance, carcass traits, tissue mineral content, and blood parameters of broiler chickens[J].Biological Trace Element Research, 2012, 147(1/2/3):120-129.
KREMER R, BARBATO G, CASTRO L, et al.Effect of sire breed, year, sex and weight on carcass characteristics of lambs[J].Small Ruminant Research, 2004, 53(1/2):117-124.
[16]
PÉREZ P, MAINO M, MORALES M S, et al.Gender and slaughter weight effects on carcass quality traits of suckling lambs from four different genotypes[J].Small Ruminant Research, 2007, 70(2/3):124-130.
BIDNER T D, HUMES P E, WYATT W E, et al.Influence of Angus and Belgian Blue bulls mated to Hereford×Brahman cows on growth, carcass traits, and longissimus steak shear force[J].Journal of Animal Science, 2009, 87(3):1167-1173.
[12]
陈润生.猪生产学[M].北京:中国农业出版社, 1995.
[19]
KAFRI I, CHERRY J A, JONES D E, et al.Breaking strength and composition of the skin of broiler chicks:response to dietary calorie-protein ratios[J].Poultry Science, 1985, 64(11):2143-2149.
AOAC.Official methods of analysis of the association of official analytical chemists[M].17th ed.Arlington:Association of Official Analytical Chemists, 2000.
FRANCO D, RODRÍGUEZ E, PURRÍNOS L, et al.Meat quality of "Galician Mountain" foals breed.Effect of sex, slaughter age and livestock production system[J].Meat Science, 2011, 88(2):292-298.
CAHANER A, GUTMAN M, PINES M.Genetic and phenotypic association between skin tearing and skin collagen, protein, and fat in broilers[J].Poultry Science, 1993, 72(10):1832-1840.
LORENZO J M, CARBALLO J.Changes in physico-chemical properties and volatile compounds throughout the manufacturing process of dry-cured foal loin[J].Meat Science, 2015, 99:44-51.
RODRÍGUEZ A B, BODAS R, LANDA R, et al.Animal performance, carcass traits and meat characteristics of Assaf and Merino×Assaf growing lambs[J].Livestock Science, 2011, 138(1/2/3):13-19.
ROSSI P, RUTZ F, ANCIUTI M A, et al.Influence of graded levels of organic zinc on growth performance and carcass traits of broilers[J].The Journal of Applied Poultry Research, 2007, 16(2):219-225.