scholarly journals Effects of Methionine Supplementation in Low-Protein Diets and Subsequent Re-feeding on Growth Performance, Liver and Serum Lipid Profile, Body Composition and Carcass Quality of Broiler Chickens at 42 Days of Age

2011 ◽  
Vol 48 (4) ◽  
pp. 229-238 ◽  
Author(s):  
Rattana Nukreaw ◽  
Chaiyapoom Bunchasak ◽  
Kanchana Markvichitr ◽  
Apassara Choothesa ◽  
Somkiert Prasanpanich ◽  
...  
Keyword(s):  
Body Composition ◽  
Lipid Profile ◽  
Growth Performance ◽  
Serum Lipid ◽  
Broiler Chickens ◽  
Carcass Quality ◽  
Low Protein ◽  
Methionine Supplementation ◽  
Protein Diets

Effects of supplementing low-protein diets with sodium dichloroacetate and glucose on growth performance, carcass traits and meat quality of growing-finishing pigs

2021 ◽  
Author(s):  
Yetong Xu ◽  
Huiyuan Chen ◽  
Ke Wan ◽  
Kaifeng Zhou ◽  
Yongsheng Wang ◽  
...  
Keyword(s):  
Growth Performance ◽  
Protein Content ◽  
Meat Quality ◽  
Carcass Traits ◽  
Experimental Period ◽  
Finishing Pigs ◽  
Protein Levels ◽  
Low Protein ◽  
Protein Diets

Abstract The objective of this study was to evaluate the effects of supplementing low-protein diets with sodium dichloroacetate (DCA) and glucose on growth performance, carcass traits, and meat quality of growing-finishing pigs. A total of 80 crossbred (Duroc × Landrace × Large White) growing barrows (27 ± 0.4 kg body weight) were allocated randomly to one of the five treatments during three successive 4-week periods. There were five diets in each phase. Diet 1 was the control diet with normal protein levels (CON) where protein levels in the three phases were 18%, 16.5%, and 15.5%, respectively. The dietary protein levels of Diets 2, 3, 4, and 5 (the low-protein diets, LP) were decreased by 4.5% compared to Diet 1. Additionally, Diets 3 and 4 were supplemented with an extra 120 mg/kg DCA (LP + DCA) or 1.8% glucose (LP + GLUC), respectively. Diet 5 was further supplemented with an extra 120 mg/kg DCA and 1.8% glucose (LP + DCA + GLUC). The LP + DCA diet increased the average daily weight gain of pigs compared to the CON and LP diet in phase 3 and the overall experimental period (P < 0.001). The LP diet reduced the gain:feed ratios of the pigs compared to the CON, LP + DCA, and LP + DCA + GLUC diets in phase 1 and the overall experimental period (P < 0.001). Furthermore, gain:feed ratios in LP + DCA and LP + DCA + GLUC groups did not differ from that of the CON group (P > 0.10). Pigs fed the LP + DCA diet had higher pH values of meat at 24 h post-mortem than the CON group (P < 0.05). The LP + DCA + GLUC diet increased the total protein content in the longissimus dorsi (LD) muscle of pigs, compared to the other dietary treatments (P < 0.05), and increased the Arg and Leu contents in the LD muscle compared to the LP + DCA diet (P < 0.05). Moreover, the LP + DCA diet induced a higher C18:1n9t percentage in the LD muscle of pigs compared to other groups (P < 0.05). In conclusion, an LP diet reduced the feed efficiency in pigs and barely affected meat quality, whereas 120 mg/kg DCA supplementation in an LP diet improved the growth performance of growing-finishing pigs, showed modest effects on carcass traits, and improved the muscle protein content with the addition of glucose.

scholarly journals Effect of dietary inclusion of ginger meal (Zingiber officinale Roscoe) on performance, serum cholesterol profile and carcass quality of broilers

2020 ◽  
Vol 44 (1) ◽  
pp. 254-266
Author(s):  
E. C. Agu ◽  
N. J. Okeudo ◽  
N. O. Oladi ◽  
V. M. O. Okoro
Keyword(s):  
Lipid Profile ◽  
Serum Lipid ◽  
Zingiber Officinale ◽  
Microbial Load ◽  
Serum Lipid Profile ◽  
Carcass Quality ◽  
Post Mortem ◽  
Carcass Yield ◽  
Zingiber Officinale Roscoe

Recent concerns over the use of antibiotics in livestock feed production has generated interest in the use of phytobiotics to improve performance and meat quality of broilers. In this study the effect of dietary inclusion of ginger meal (Zingiber officinale Roscoe) on performance, haematology, serum lipid profile and carcass quality of broilers were evaluated. One hundred and eighty day old broiler chicks (Cobb strain) were randomly allocated to 4 treatment group with 3 replicates each. Each group was fed an experimental diets containing air dried ginger rhizome meal at either 0%, 0.2%, 0.4% and 0.6% levels, at starter (0-4 weeks) and finisher (5-8 weeks) stages, in a completely randomized design. 5 birds per treatment were sacrificed and used to evaluate the haematology, performance, carcass characteristics, serum lipid profile and post mortem microbial load on the meat. Results showed no significant (P>0.05) effects of dietary ginger meal inclusion on performance parameters but improved carcass yield and quality. 0.4% inclusion of ginger meal significantly (P<0.05) increased the HDL cholesterol level (56.72 mg/dL) relative to those fed 0.2% (25.38 mg/dL) while the total lipid, cholesterol, triglycerides and LDL levels were not significantly affected (P>0.05). Birds fed diets containing 0.2% ginger meal had haemoglobin content (11.96 g/dl) and PCV (36.68%) values superior to the control (10.16 g/dl and 32.22% respectively) Post mortem microbial load were unaffected by dietary inclusion of ginger up to 0.6% in their diets. Meat tenderness was significantly higher (P<0.05) at 0.4% and 0.6% ginger meal levels (8.20) compared to the control (7.40). it is therefore concluded that 0.4 to 0.6 % dietary inclusion of ginger meal in broiler diets will have positive effects on serum lipoprotein level, carcass yield and organoleptic quality of meat.

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