{"title":"日粮氨基酸密度、粗蛋白水平和饲料安排对屠宰体重在 1.9 至 2.0 千克之间的 Ross 708 雌性肉鸡的性能和胴体特征的影响","authors":"C.W. Maynard , C.L. Williams , M.T. Kidd","doi":"10.1016/j.japr.2024.100427","DOIUrl":null,"url":null,"abstract":"<div><p>Adjustments in dietary amino acid density, CP levels, and feed scheduling influence broiler performance, carcass traits, and integrator profitability. Therefore, 2 experiments were conducted to assess the former factors on the live performance and carcass traits of female Ross 708 broilers grown for a high-value bone-in market (36 d processing). Experiment 1 evaluated 4 amino acid densities while Experiment 2 was arranged as a 2 × 2 factorial evaluating dietary CP and feed scheduling. Amino acid density in Experiment 1 had no effect on any performance or processing parameter except feed conversion which was decreased for birds fed the Medium diet. The lack of substantial improvement in live performance resulted in increased feed, live BW, and carcass costs per kg. Neither feed scheduling nor dietary CP had an effect on live performance in Experiment 2. However, feeding low CP diets resulted in increased total breast meat yield, whereas increasing the number of feeding phases decreased total breast meat yield. In conclusion, dietary alterations in amino acid density in female broiler broilers warrants further attention.</p></div>","PeriodicalId":15240,"journal":{"name":"Journal of Applied Poultry Research","volume":"33 3","pages":"Article 100427"},"PeriodicalIF":1.6000,"publicationDate":"2024-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1056617124000266/pdfft?md5=c07382f00f3f572eb721606de3af8ecb&pid=1-s2.0-S1056617124000266-main.pdf","citationCount":"0","resultStr":"{\"title\":\"Influence of dietary amino acid density, crude protein level, and feed scheduling on performance and carcass traits of Ross 708 female broilers slaughtered between 1.9 and 2.0 kg\",\"authors\":\"C.W. Maynard , C.L. Williams , M.T. Kidd\",\"doi\":\"10.1016/j.japr.2024.100427\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Adjustments in dietary amino acid density, CP levels, and feed scheduling influence broiler performance, carcass traits, and integrator profitability. Therefore, 2 experiments were conducted to assess the former factors on the live performance and carcass traits of female Ross 708 broilers grown for a high-value bone-in market (36 d processing). Experiment 1 evaluated 4 amino acid densities while Experiment 2 was arranged as a 2 × 2 factorial evaluating dietary CP and feed scheduling. Amino acid density in Experiment 1 had no effect on any performance or processing parameter except feed conversion which was decreased for birds fed the Medium diet. The lack of substantial improvement in live performance resulted in increased feed, live BW, and carcass costs per kg. Neither feed scheduling nor dietary CP had an effect on live performance in Experiment 2. However, feeding low CP diets resulted in increased total breast meat yield, whereas increasing the number of feeding phases decreased total breast meat yield. In conclusion, dietary alterations in amino acid density in female broiler broilers warrants further attention.</p></div>\",\"PeriodicalId\":15240,\"journal\":{\"name\":\"Journal of Applied Poultry Research\",\"volume\":\"33 3\",\"pages\":\"Article 100427\"},\"PeriodicalIF\":1.6000,\"publicationDate\":\"2024-03-12\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.sciencedirect.com/science/article/pii/S1056617124000266/pdfft?md5=c07382f00f3f572eb721606de3af8ecb&pid=1-s2.0-S1056617124000266-main.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Applied Poultry Research\",\"FirstCategoryId\":\"97\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1056617124000266\",\"RegionNum\":3,\"RegionCategory\":\"农林科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"AGRICULTURE, DAIRY & ANIMAL SCIENCE\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Applied Poultry Research","FirstCategoryId":"97","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1056617124000266","RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"AGRICULTURE, DAIRY & ANIMAL SCIENCE","Score":null,"Total":0}
Influence of dietary amino acid density, crude protein level, and feed scheduling on performance and carcass traits of Ross 708 female broilers slaughtered between 1.9 and 2.0 kg
Adjustments in dietary amino acid density, CP levels, and feed scheduling influence broiler performance, carcass traits, and integrator profitability. Therefore, 2 experiments were conducted to assess the former factors on the live performance and carcass traits of female Ross 708 broilers grown for a high-value bone-in market (36 d processing). Experiment 1 evaluated 4 amino acid densities while Experiment 2 was arranged as a 2 × 2 factorial evaluating dietary CP and feed scheduling. Amino acid density in Experiment 1 had no effect on any performance or processing parameter except feed conversion which was decreased for birds fed the Medium diet. The lack of substantial improvement in live performance resulted in increased feed, live BW, and carcass costs per kg. Neither feed scheduling nor dietary CP had an effect on live performance in Experiment 2. However, feeding low CP diets resulted in increased total breast meat yield, whereas increasing the number of feeding phases decreased total breast meat yield. In conclusion, dietary alterations in amino acid density in female broiler broilers warrants further attention.
期刊介绍：
The Journal of Applied Poultry Research (JAPR) publishes original research reports, field reports, and reviews on breeding, hatching, health and disease, layer management, meat bird processing and products, meat bird management, microbiology, food safety, nutrition, environment, sanitation, welfare, and economics. As of January 2020, JAPR will become an Open Access journal with no subscription charges, meaning authors who publish here can make their research immediately, permanently, and freely accessible worldwide while retaining copyright to their work. Papers submitted for publication after October 1, 2019 will be published as Open Access papers.
The readers of JAPR are in education, extension, industry, and government, including research, teaching, administration, veterinary medicine, management, production, quality assurance, product development, and technical services. Nutritionists, breeder flock supervisors, production managers, microbiologists, laboratory personnel, food safety and sanitation managers, poultry processing managers, feed manufacturers, and egg producers use JAPR to keep up with current applied poultry research.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
