For studying the germplasm charactedsUcs and carcass traits of Changtai yak, 8 adult yaks （5 male, 3 female） were selected and tested. The results showed that the pre-slaughter weight of the adult male and female Ch...For studying the germplasm charactedsUcs and carcass traits of Changtai yak, 8 adult yaks （5 male, 3 female） were selected and tested. The results showed that the pre-slaughter weight of the adult male and female Changtai yak was 364.32 and 266.83 kg, respectively, which presented extremely significant difference （P〈0.01）. The carcass weight, net bone weight net meat weight, and the ratio of bone to meat also showed extremely significant difference （P〈O.01）, which were 186.60 and 125.67 kg, 39.74 and 25.00 kg, 147.84 and 100.83 kg, 1：3.73 and 1： 4.03, respectively. The dressing percentage had significant difference which was 51.15% and 49.34%, respectively （P〈0.05）. The neat meat percentage and carcass meat production rate showed no significant difference which were 40.54% and 37.66%, 79.29% and 80.24%, respectively （P〉0.05）. It indicated that Changtai yak has better growth performance and meat performance potential, and worth of further studying and breeding.展开更多
Improving Malagasy zebu production in the face of booming Malagasy population and regression of the animal number, this study was initiated to put forth some Malagasy zebu carcass weight performance and dressing perce...Improving Malagasy zebu production in the face of booming Malagasy population and regression of the animal number, this study was initiated to put forth some Malagasy zebu carcass weight performance and dressing percentages following slaughter. Measurements concerned live weight before slaughtering, carcass weights, quarters and carcass halves, left and right and the fiffla quarter （blood, leather, intestine, lung, heart, liver, kidneys, spleen and rumen with its content） weights on 544 individuals without distinction （age nor sex）. Descriptive statistical analysis was undertaken to qualify and compare the various weights. It results high proportion females （66%）, smaller size （live weight less than 250 kg, 60%） and 5 live weight classes. Live weight was different in the 2 sexes starting class 3 （live weight 〉 250 kg） （p = 0.0027）. Males fore quarters were heavier than females （p 〈 1‰）. Carcass dressing percentage increased according to live weight class, whereas, 5th quarter yield presented a regressive reduction with increasing weight class. Survey shows an average dressing percentage of 46.20% with an average 5th quarter yield of 37.43%. Malagasy zebus are light weighted animals compared to the African zebus. Precocious slaughtering （before 250 kg live weight） doesn＇t allow a good meat yield.展开更多
基金Supported by Functional Gene Screen and Tissues' Differential Expression Analysis of Yak Muscle Development in Growth StagesNational Beef Cattle Industrial Technology System(CARS-38)+1 种基金Sichuan Province Yak Germplasm Resource Information Sharing Platform Construction Program(14010121)Ganzi Community Key Grass-Livestock Transformation Technology in Hongyuan County(201203008)~~
文摘For studying the germplasm charactedsUcs and carcass traits of Changtai yak, 8 adult yaks （5 male, 3 female） were selected and tested. The results showed that the pre-slaughter weight of the adult male and female Changtai yak was 364.32 and 266.83 kg, respectively, which presented extremely significant difference （P〈0.01）. The carcass weight, net bone weight net meat weight, and the ratio of bone to meat also showed extremely significant difference （P〈O.01）, which were 186.60 and 125.67 kg, 39.74 and 25.00 kg, 147.84 and 100.83 kg, 1：3.73 and 1： 4.03, respectively. The dressing percentage had significant difference which was 51.15% and 49.34%, respectively （P〈0.05）. The neat meat percentage and carcass meat production rate showed no significant difference which were 40.54% and 37.66%, 79.29% and 80.24%, respectively （P〉0.05）. It indicated that Changtai yak has better growth performance and meat performance potential, and worth of further studying and breeding.
文摘Improving Malagasy zebu production in the face of booming Malagasy population and regression of the animal number, this study was initiated to put forth some Malagasy zebu carcass weight performance and dressing percentages following slaughter. Measurements concerned live weight before slaughtering, carcass weights, quarters and carcass halves, left and right and the fiffla quarter （blood, leather, intestine, lung, heart, liver, kidneys, spleen and rumen with its content） weights on 544 individuals without distinction （age nor sex）. Descriptive statistical analysis was undertaken to qualify and compare the various weights. It results high proportion females （66%）, smaller size （live weight less than 250 kg, 60%） and 5 live weight classes. Live weight was different in the 2 sexes starting class 3 （live weight 〉 250 kg） （p = 0.0027）. Males fore quarters were heavier than females （p 〈 1‰）. Carcass dressing percentage increased according to live weight class, whereas, 5th quarter yield presented a regressive reduction with increasing weight class. Survey shows an average dressing percentage of 46.20% with an average 5th quarter yield of 37.43%. Malagasy zebus are light weighted animals compared to the African zebus. Precocious slaughtering （before 250 kg live weight） doesn＇t allow a good meat yield.
