The application of reduced dietary crude protein levels supplemented with additional amino acids in laying ducks

Zhang, Y.N.; Wang, S.; Deng, Yuanzhong; Huang, Xin; Li, K.C.; Chen, W.; Ruan, D.; Xia, Weiguang; Wang, S.L.; Zheng, Chuntian

doi:10.1016/j.psj.2021.01.006

Cited by 9 publications

(6 citation statements)

References 17 publications

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“…Thirty eggs in the second breeding cycle of lactation were randomly selected from each treatment group according to several similar studies ( Zhang et al., 2021 ; Jin et al., 2022 ). Before measuring, all the eggs were stored at 4°C.…”

Section: Methodsmentioning

confidence: 99%

Effect of different dietary energy/protein ratios on growth performance, reproductive performance of breeding pigeons and slaughter performance, meat quality of squabs in summer

Peng¹,

Huang²,

Zhang³

et al. 2023

Poultry Science

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Section: Methodsmentioning

confidence: 99%

Effect of different dietary energy/protein ratios on growth performance, reproductive performance of breeding pigeons and slaughter performance, meat quality of squabs in summer

Peng¹,

Huang²,

Zhang³

et al. 2023

Poultry Science

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“…In support of this, serum ALT, AST, triglycerides, cholesterol, LDL, VLDL, total bilirubin, and direct and indirect bilirubin contents remained unchanged in response to increasing dietary Lys. Blood albumin and total protein concentrations are trustworthy indicators of hepatic function and, collectively with blood AST and ALT levels and blood lipid profile, are closely related to the extent of hepatic lipidosis [ 53 , 54 ]. Excessive dietary L-lysine·H 2 SO 4 was reported to diminish the hepatic physiological function, causing the deposition of lipoprotein in the liver and liver damage [ 29 ].…”

Section: Discussionmentioning

confidence: 99%

“…On the other hand, serum AST activity was elevated with decreasing CP levels and this elevation was associated with the disorganization of hepatocytes, moderate degeneration of hepatic cells, vacuolated hepatic cells, excessive connective tissue, and lymphocytic infiltration. Our results indicated that the liver function status might be, to some extent, disrupted by decreasing the dietary CP content [ 53 ]. Consistent with our findings, Zhang et al [ 53 ] reported an increase in serum ALT and AST activities with decreasing CP levels.…”

Section: Discussionmentioning

confidence: 99%

“…Our results indicated that the liver function status might be, to some extent, disrupted by decreasing the dietary CP content [ 53 ]. Consistent with our findings, Zhang et al [ 53 ] reported an increase in serum ALT and AST activities with decreasing CP levels. In the current study, there were non-significant differences in serum bilirubin, indirect and direct bilirubin, cholesterol, triglycerides, and LDL contents between broilers fed the reduced-CP diets and those fed the C diet, implying that lipid metabolism and hepatic functions were not detrimentally affected by decreasing the dietary CP (1% or 2%) contents in Arbor Acres broiler chickens.…”

Section: Discussionmentioning

confidence: 99%

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Impacts of Dietary Lysine and Crude Protein on Performance, Hepatic and Renal Functions, Biochemical Parameters, and Histomorphology of Small Intestine, Liver, and Kidney in Broiler Chickens

Mousa

Asman

Ali

et al. 2023

Veterinary Sciences

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The present study aimed to investigate the effects of increasing dietary lysine (Lys) levels with an adequate dietary crude protein (CP) content, as well as the effects of a reduction in dietary CP content with the recommended amino acid (AAs) level, on the performance, blood biochemical parameters, and histomorphology of the duodenum, liver, and kidney in broiler chickens. A total of 500 broiler chickens were randomly distributed into five dietary treatment groups, following a completely randomized design, where, at the beginning, the control group (C) was fed a diet containing the standard CP and Lys levels: 23% CP with 1.44% Lys during the starter period; 21.5% CP with 1.29% Lys during the growing period; and 19.5% CP with 1.16% Lys during the finishing period. The Lys content was increased by 10% above the recommended control basal requirements in the second group (Gr1) and by 20% in the third group (Gr2), while using the same recommended CP percentage as the C group. The fourth group (Gr3) had a 1% lower CP content and the fifth group had a 2% lower CP content than the C group, with the same recommended AA level as the C group. Increasing the Lys content in the Gr1 group improved the broilers’ weight gains (p < 0.05) during the starter, growing, and finishing periods. Decreasing dietary CP with the standard AA levels (Gr3 and Gr4) did not significantly affect (p > 0.05) the live weight gain, feed intake, or feed conversion ratio (FCR) of the broilers compared with those fed with the C diet. Blood total bilirubin, direct and indirect bilirubin, triglycerides, cholesterol, low-density lipoprotein (LDL), and very LDL were not different among the experimental groups. However, blood aspartate aminotransferase levels were increased (p < 0.05) in the Gr1 and Gr3 groups compared with the other treatment groups. All dietary treatments decreased the serum creatinine levels (p < 0.05) compared with the C group. The Gr2 broilers had greater serum total protein and globulin (p < 0.05) than those receiving the other treatments. Increasing dietary Lys levels resulted in a significant improvement in duodenum villus height and width (p < 0.05), while the low-CP diets resulted in shorter villi length and width, along with degenerated areas and lymphocytic infiltration. Low dietary CP content induced hepatocyte disorganization and moderate degeneration, along with vacuolated hepatic cells, excessive connective tissue, and lymphocytic infiltration. The cortical regions of the kidney exhibited obvious alterations in the Gr3 and Gr4 groups and large interstitial spaces were found between tubules. Renal tubules in the Gr3 and Gr4 groups were smaller in size and some of these tubules were atrophied. In conclusion, reducing dietary CP levels to 1% or 2% lower than the recommended level did not negatively affect growth performance, inducing minimal influence on the blood metabolic indicators of health status, and resulting in moderate alterations to the histomorphology of the duodenum, liver, and kidney. Furthermore, increasing the Lys content by 10% above the recommended level improved the growth performance, health status, and histomorphology of the duodenum, liver, and kidney in broiler chickens.

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“…The integration of the Internet of Things and environmental monitoring has become a new development trend in environmental monitoring and management [3]. Some people have applied the Internet of things technology to agricultural greenhouse environmental monitoring and pest monitoring.…”

Section: Introductionmentioning

confidence: 99%

Aquaculture environment monitoring system based on Internet of Things

Liu

Wang²

2023

Second International Conference on Green Communication, Network, and Internet of Things (CNIoT 2022)

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The application of Internet of Things technology to agricultural environmental monitoring can not only effectively provide real-time monitoring of the environment, but also provide important data basis for environmental supervision and management through information sharing and auxiliary decision-making. Therefore, in order to improve the reliability of aquaculture environment monitoring, this paper introduces the Internet of Things and develops a new monitoring system for aquaculture environment. The system architecture shall be developed and the monitoring equipment shall be selected according to the actual requirements. With the support of the hardware equipment, the Internet of Things technology shall be introduced to establish the communication link between the sensor, the monitoring equipment and the monitoring environment. The aggregation node of the design information shall be a single node, and all the monitoring information will be forwarded by the Internet of Things node in a multi-hop manner to realize the communication and intelligent transmission of the monitoring environment based on the Internet of things. By introducing the remote control technology, this paper designs the corresponding monitoring and early warning indicators, starts the sensors and induction devices, carries out the early warning of the aquaculture environment monitoring indicators, and completes the development of the aquaculture environment monitoring system. Design comparison experiments show that the system developed in this paper can not only ensure the continuity of monitoring results, but also reduce the error of monitoring indicators, improve the accuracy of monitoring results, and contribute higher value to the development of aquaculture.

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The application of reduced dietary crude protein levels supplemented with additional amino acids in laying ducks

Cited by 9 publications

References 17 publications

Effect of different dietary energy/protein ratios on growth performance, reproductive performance of breeding pigeons and slaughter performance, meat quality of squabs in summer

Effect of different dietary energy/protein ratios on growth performance, reproductive performance of breeding pigeons and slaughter performance, meat quality of squabs in summer

Impacts of Dietary Lysine and Crude Protein on Performance, Hepatic and Renal Functions, Biochemical Parameters, and Histomorphology of Small Intestine, Liver, and Kidney in Broiler Chickens

Aquaculture environment monitoring system based on Internet of Things

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