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Comparative Analysis of slaughter performance and Meat Flavor Traits of Quality Chicken under Cage Rearing and Free-range Farming Conditions

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Animal Husbandry and Feed Science 2022年第1期14卷 1-6页

作者： Yang Chaowu Yu Chunlin Qiu Mohan Zhang Zengrong Hu Chenming Xiong Xia Xia Bo Peng Han Song Xiaoyan Chen Jialei Zhu Shiliang Liu Siyang Du Huarui Li Qingyun Sichuan Animal Science Academy Chengdu 610066China Sichuan Provincial Key Laboratory of Animal Genetics and Breeding Chengdu 610066China Sichuan Dahen Poultry Breeding Co. Ltd.Chengdu 610066China

[Objective]The paper was to compare the slaughter performance and meat flavor of quality chicken under cage rearing and free-range farming conditions.[Method]A total of 4001-day-old cocks,S07 line cultivated by Sichuan Dahen Poultry Breeding Co.,Ltd.(bred for 4 succes-sive generations),were kept in cages until the end of 5 weeks of age,which were then divided into cage rearing and free-range farming *** cocks were fed with the same diet,and slaughter tests and meat quality analysis were carried out at the end of 10 and 22 weeks of age,respectively.[Result]The live weight,carcass weight and abdominal fat percentage in cage rearing group were significantly higher than those in free-range farming group(P<0.01),and the percentage of half-eviscerated yield and percentage of eviscerated yield in cage rearing group were significantly higher than those in free-range farming group(P<0.05),but there were no significant differences in dressing percentage,percentage of leg muscle and per-centage of breast *** intramuscular fat(IMF)content and muscle fiber density of chicken in cage rearing group were significantly higher than those in free-range farming group(P<0.01),but there was no significant difference in inosinic acid(IMP)*** content of IMF and IMF increased with the increase of feeding age,but the deposition rate of intramuscular fat was higher than that of IMF in late feeding period.[Conclusion]The study will provide reliable guidance for production and market consumption of high quality chicken.

关键词： Quality chicken Free-range farming chicken slaughter performance Flavor traits of meat

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Effects of Different Protein Energy Ratios on Fattening performance,slaughter performance and Meat Quality of Pigs

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Agricultural Biotechnology 2023年第2期12卷 59-62,75页

作者： Cui YANG Rongsheng JIANG Yongshao WU Xiying YANG Haihong LIAO Qian QIN Shishan QIN Ying ZHANG Jiahuang YANG Limei QIN Fulin WANG Guangxi Agricultural Vocational University Nanning 530009China Pingnan Animal Epidemic Prevention and Control Center Pingnan 537300China Qinzhou News and Media Center Qinzhou 535000China Guangxi Silk Road Agriculture Co. LtdQinzhou 535008China

[Objectives]Protein energy ratio refers to the proportional relationship between protein and energy levels in animal diets,i.e.,the grams of crude protein corresponding to every megacalorie of energy,which is generally expressed as CP:ME or CP:*** study was conducted to investigate the effects of different diets on fattening and slaughter performance and meat quality traits for"L(Large Yorkshire)×L(Landrace)"crossbred pigs.[Methods]Eighteen piglets of L×L crossbred with similar body weights about 51 kg were *** piglets were divided into 3 groups randomly and each group was assigned to 3 replicates with 2 piglets in a *** A was fed diet Ⅰ (control diet),group B was fed the same diet of group A in the first month of the trial but fed diet Ⅱ in second month,and group C consumed diet Ⅲ.All the pigs were fed in the same feeding condition for two months except the different diets during the *** pig in similar body weight from each replicate was slaughtered for the determination of slaughter performance and meat quality traits in the end of the trial.[Results]The average daily feed intake(ADFI)of pigs from group B was only(2.32±0.52)kg and significantly lower than those from group A and group C(P0.05).Also,no differences occurred in the carcass length,back fat thickness,longissimus muscle (LM) area and dressing percentage(P>0.05).In addition,no differences were found in the meat quality traits of shear force,meat color,pH_(45 min),pH_(24 h) and cooking loss(P>0.05).However,the water-holding capacity of meat from group C was(2.58±0.02)ms and significantly lower than that of(2.80±0.20)ms from group A(P<0.05).Although the contents of glutamic acid and cystine in LM from group B was significantly lower than those from group A and group C(P<0.05),no differences occurred in the contents of other amino acids,the total amino acid and total flavor amino acid among the three

关键词： Protein energy ratio L×L crossbred Fattening slaughter performance Meat quality IMF

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Effect of Rapeseed Straw on Growth and slaughter performance of Sichuan White Goose

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Animal Husbandry and Feed Science 2017年第6期9卷 360-362页

作者： Yang Ting Lei Zhengda Zhang Yishu Yu Zhiqiang Wang Dayi Sichuan Cereals and Oil Research Institute

[ Objective ] The paper was to study the effects of rapeseed straw on growth and slanghter performance of Sichuan white goose. [ Method ] Totally 400 3-day-old Sichuan white geese were randomly divided into four groups ; geese in control group were fed with the fundamental diet ; geese in group 1, group 2 and group 3 were fed with the fundamental diet containing 5%, 10% and 10% rapeseed straw instead of equal amount of wheat bran, respectively. The body weight and slaughter performance of Sichuan white geese in control group, group 1 and group 2 were determined at 10 weeks of age, while those in group 3 were determined at 14 weeks of age. [ Result] There was no significant difference in gross weight, slaughter weight, eviscerated weight with giblet, head weight, sole weight, wing weight, neck weight, muscular stomach weight and intestine indexes of 10-week-old white geese between group 1 and control group, and between group 2 and con- trol group （ P 〉 0.05 ） ; the live weight slightly decreased. The growth and slaughter performance of 14-week-old Sichuan white geese were significantly higher fllan that of 10-week-old geese （P 〈0.05）, with better meat and flavor, but relatively low average daily gain （P 〈0.05 ） ; there was no significant impact on muscular stomach pH and intestinal pH （P 〉 0.05 ）. [ Conclusion] Substituting partial wheat bran with rapeseed straw can satisfy the diet requirement of Sichuan white geese, but has no significant impact on its growth and slaughter performance （ P 〉 0.05）.

关键词： Rapeseed straw Sichuan white geese Growth performance slaughter performance Meat quality

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Effects of Amino Acid or Fulibao Nutritional Additives on slaughter performance and Pork Quality of Pigs

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Animal Husbandry and Feed Science 2022年第4期14卷 33-36页

作者： Li Shaobo Zheng Boqiang Li Xiuliang Huang Jie Du Lijuan Sun Qinju Yang Cui Yang Jiahuang Guangxi Agricultural Vocational University Nanning 530009China

[Objective]The paper was to study the effects of amino acid or Fulibao nutritional additives on slaughter performance and pork quality of pigs,and to provide a theoretical basis for improving pork quality in pig breeding industry.[Method]Six Landrace×Yorkshire castrated male piglets were divided into three *** piglets in the first group were fed with conventional diet and used as the *** piglets in the experimental group I were fed with the conventional diet supplementing 0.1%Fulibao,and those in the experimental group II were fed with the conventional diet supplementing 0.36%compound amino acid *** piglets were reared for 2 months before being slaughtered.[Result]The average daily gains of piglets in the experimental groups I and II were 17.7%and 6.73%higher than that in the control group,but there was no difference in feed/gain ratio among the three *** dressing percentages of piglets in the experimental groups I and II were 2.7%and 1.72%higher than that in the control group,and the lean meat percentages were 3.5%and 7.97%higher than that in the control group,*** meat fat ratios in the two experimental groups were significantly higher than that in the control *** intermuscular fat in the experimental group II was significantly higher than that in the control ***,the contents of intermuscular fat and inosinic acid in the experimental group II were significantly lower than those in the control group.[Conclusion]Both additives can improve the average daily gain and main slaughter performance of pigs,but can not improve the inosine acid content,and the compound amino acid preparation can not improve the intermuscular fat content.

关键词： slaughter performance Pork quality Nutritional additives Production performance

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slaughter performance, Muscle Quality and Nutritional Components of Twenty-four-month-old Tibetan Goats

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Agricultural Science & Technology 2017年第4期18卷 673-677,682页

作者：周明亮王燕军毛进彬陈明华阿龙呷肖文平庞倩杨平贵四川省草原科学研究院四川成都611743 丹巴县农牧和科技局四川丹巴626300 甘孜州畜牧站四川康定626000

[Objective] This study was conducted to understand goat germplasm char- acteristics. [Method] With some 24-month-old males and females Tibet goats as experimental materials, a slaughter experiment was carried out to determine their slaughter performance, muscle quality and muscle nutritional components. [Result] The body weights of males and females before slaughter were （20.16±1.26） and （19.33±4.86） kg, respectively; the dressing percentages of males and females were （43.86±1.74）% and （44.08±5.46）%, respectively; the meat percentages were （32.43± 1.52）% and （32.72±3.97）%, respectively; and the meat production rates of carcass were （73.28±0.09）% and （73.16±0.85）%, respectively. There were less differences in carcass measurements, carcass segmentation, muscle quality, muscle fiber charac- teristics, muscle nutritional components, muscle mineral contents and heavy metal contents between males and females, while eye muscle area and hind leg meat weight of males were significantly higher than those of females. In muscles of males and females, 18 amino acids were detected totally, EAA/TAA values were （39.23±0.24）% and （38.70±0.15）%, respectively, and EAA/NEAA values were （64.73± 0.65）% and （63.17±0.41）%, respectively. [Conclusion] This study lays a foundation for overall understanding of germplasm characteristics of Tibetan goats.

关键词： Tibetan goat slaughter performance Muscle quality Amino acid

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Effects of Antimicrobial Peptides on Production,slaughter performance and Blood Routine of Tan Sheep

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Agricultural Biotechnology 2023年第1期12卷 63-65,71页

作者： Ning'an MEI Zixin LIU Jun XU Hui ZHANG Li HU Hua YUN Institute of Animal Husbandry and Veterinary Medicine Ningxia Academy of Agricultural and Forestry Sciences(Limited Company)Yinchuan 750002China Ningxia Agricultural Reclamation Group Tan Sheep Industry Co. Ltd.Yinchuan 750206China Ningxia Feed Workstation Yinchuan 750002China

[Objectives]This study was conducted to analyze effects of antimicrobial peptides added to the diet of Tan sheep on their production, slaughter performance and blood composition. [Methods] Ninety two four-month-old Tan sheep were randomly divided into two treatment groups according to their body weight, 46 in each group. The control check group(CK) was feed with conventional diet, and the experimental group was fed with the addition of antimicrobial peptide on the basis of the conventional diet, with the added amount of 2.5 g/sheep per day. The experimental period was 60 d. [Results] The incidence rate was 75.06% lower in the experimental group than in the CK. The average daily weight gain per sheep was 11.27% higher in the experimental group than in the CK(Pslaughter performance, the data difference of each item was not significant. The PH at 45 min and 24 h after slaughter was within the normal range of fresh mutton. The cooked meat percentage and water loss rate showed no significant differences(P>0.05). The marbling ranged from 2.45 to 2.50, indicating that the fat content was moderate, and the difference between groups was not significant(P>0.05). The flesh color ranged from 3.00 to 3.15, between light red and bright red, belonging to the normal color of mutton, and the difference between groups was not significant(P>0.05). The shear force was between 2.50 and 2.65, without a significant difference between groups(P>0.05). The white blood cells, lymphocytes and platelets in the experimental group were lower than those in the CK(P<0.01). The erythrocytes and hemoglobin in the erythrocyte group were higher than those in the CK(P<0.05). The neutrophils and monocytes in the experimental group were lower than those in the CK(P<0.05). [Conclusions] This study provide

关键词： Antimicrobial peptides Tan sheep Production slaughter performance Routine blood test

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Heterosis of slaughter performance and Meat Quality of New Zealand White Rabbit,Fujian Yellow Rabbit and Hybrid Groups

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Animal Husbandry and Feed Science 2012年第2期4卷 65-67页

作者： XU Shi-yong 1 ,LIU Chun 2 ,FENG Kai 3 ,ZHAO Jian-ya 4 ,WU Xin-sheng 3 1. Nantong Center for Animal Disease Control and Prevention,Nantong 226006,China 2. Experimental Animal Center,Nantong University, Nantong 226001,China 3. College of Animal Science and Technology,Yangzhou University,Yangzhou 225009,China 4. School of Public Health,Nantong University,Nantong 226019,China

[Objective]The aim was to evaluate heterosis of hybridization groups of New Zealand White rabbits and Fujian Yellow rabbits. [Method] Totaling 80 rabbits,including New Zealand White rabbits,Fujian Yellow rabbits,and direct-cross and reciprocal cross rabbits were measured in slaughter performance and meat quality. [Result] Live-weight,evisceration weight and semi-evisceration weight of rabbits in four groups were 1 817. 20 -2 308. 60,914. 10 -1 231. 50 and 985. 99 -1 315. 20 g,respectively. For slaughter performance,FY × NZ was the highest among male rabbits and NZ was the highest among female rabbits. In addition,shear forces of crureus and longissimusdorsi for rabbits in four groups were 25. 11 -40. 44 and 18. 02 -26. 44 N,respectively,among which male NZ was the lowest in shear force of crureus and female NZ was the lowest of longissimusdorsi. Water-loss rates of crureus and longissimusdorsi were 33. 43% -41. 52% and 31. 79% -39. 01%,among which male NZ proved the lowest in water-loss of crureus and male FY achieved the lowest level for the rate of longissimusdorsi. [Conclusion]Hybrid groups showed some heteroses in slaughter performance and meat quality.

关键词： Rabbit slaughter performance Meat quality Heterosis

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Correlation Analysis between Body Size and slaughter performance in F-_1 Hybrid Offspring of Princess Chicken and Kirin Chicken

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Animal Husbandry and Feed Science 2014年第4期6卷 182-184,211页

作者： Li Naibin Du Bingwang Yang Fenxia Tao Lin Chen Jiebo Department of Animal Science Guangdong Ocean University

In order to study the meat development value of princess chicken,the body size traits and slaughter performance of 12-week-old F1 hybrid offspring of princess chicken(♂) and kirin chicken(♀) were measured and the correlations between different traits were analyzed. The results showed that body length,keel length and shank length of male F1 hybrid offspring were significantly higher than those of female chickens(P slaughter performance and body size in F1 hybrid offspring. The regression equations between different indicators were identified and developed. The results provided a certain theoretical reference to predict slaughter performance indicators through a living body size measurement,and revealed an improved production performance of F1 hybrid offspring.

关键词： Hybrid chickens Body size slaughter performance Correlation analysis

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slaughter performance, Muscle Quality and Muscle Nutrients of Twelve-month-old Danba Goat

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Agricultural Science & Technology 2016年第12期17卷 2652-2656页

作者：杨平贵周明亮王燕军毛进彬陈明华阿龙呷肖文平庞倩四川省草原科学研究院四川成都611743 丹巴县农牧和科技局四川丹巴626300 甘孜州畜牧站四川康定626000

[Objective] The aim was to discuss the resource characteristics of Danba goat. [Method] Three male and three female goats of twelve-month-old Danba goat were selected to slaughter,and their slaughter performance, muscle qulity and mus- cle nutrients were determined. [Result] The pre-slaughter weights, dressing percent- ages, meat percentages and carcass meat production rates of the male and female Danba goats were （25.83±1.04） and （18.50±2.29） kg, （45.18±0.78）% and （38.89± 2.08）%, （33.76±1.4）% and （28.59±1.99）%, and （74.30±0.85）% and （74.08±0.65）%, respectively. The carcass length, carcass hind leg circumstance, carcass hind leg length, lumbar muscle thickness, hind leg meat yield, shoulder muscle yield and breast meat yield of male goats were significantly higher than those of female goats （P〈0.05）, and no significant differenceswere found in other carcass size and carcass segmentation indices between male and female goats （P〉0.05）. There were small differences in muscle fiber properties, muscle quality, muscle nutritional composition, muscle mineral content and muscle heavy metal content between male and female goats （P〈0.05）. A total of 18 kinds of amino acids were detected in the male and female goats. The EAA/TAAs and EANNEAAs of male and female goats were （39.56±0.26）% and （39.48±0.66）%, and （65.45±0.71）% and （65.43±1.80）%, respec- tively. [Conclusion] This study will provide the basis for the understanding of the resource characteristics of Danba goat.

关键词： Danba goat slaughter performance Muscle quality Amino acid

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Effects of Addition of Amino Acids or Soybean Phospholipid in Diet on slaughter performance and Meat Quality of Pigs

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Asian Agricultural Research 2023年第4期15卷 40-43页

作者： Sicong LUO Shaobo LI Xiangyun HU Min CHEN Lingxiu GAN Tingju HUANG Wenjie LU Junxiang HUANG Haimei DENG Jiahuang YANG Cui YANG Xiuliang LI Guangxi Vocational University of Agriculture Nanning 530007China

[Objectives]The study aims to discuss the effects of addition of arginine and glutamic acid or soybean phospholipid,vitamin E and yeast selenium in diet on the slaughter performance and meat quality of long(white)×large(York)binary hybrid pigs.[Methods]27 long×large castrated hybrid boars with the body weight of(54.4±0.15)kg were randomly divided into 3 groups,with 3 replicates per group and 3 pigs per *** A was the control group,in which the pigs were fed basal diet;in group B,0.8%arginine and 0.60%glutamate were added to the basal diet;in group C,75 g of soybean phospholipid,20 g of vitamin E and 8 g of yeast selenium were added to every 100 kg of the basal *** trial period was 60 *** the experiment was ended,one test pig with similar body weight was selected from each replicate for slaughter and meat determination.[Results]The average weight gain and eye muscle area of the pigs in group B were significantly higher than those in group C(P0.05);there was no significant difference between group B or C and group A in the average weight gain and eye muscle area(P>0.05).There was no significant difference in other slaughter performance between the three groups(P>0.05).Besides,there was also no significant difference in the content of various amino acids,total amino acids and total umami amino acids between the three groups(P>0.05).The inosine content in the longissimus dorsi muscle and muscle cooking loss of binary hybrid pigs in group C were significantly better than those in group B(P0.05);there was no significant difference between group B or C and group A in the inosine content and muscle cooking loss of the pigs(P>0.05).In addition,there was no significant difference in other meat traits and chemical composition of the

关键词： slaughter performance Meat quality Arginine Glutamic acid Soybean phospholipid Long×large binary hybrid pigs

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