scholarly journals Sequential feeding with high-fat/low-crude protein diets for two lines of growing-finishing pigs under daily cyclic high ambient temperature conditions1

2019 ◽  
Vol 97 (6) ◽  
pp. 2493-2504
Author(s):  
Alícia Zem Fraga ◽  
Paulo Henrique Reis Furtado Campos ◽  
Welex Cândido Da Silva ◽  
Raphael Perini Caetano ◽  
Alini Mari Veira ◽  
...  
Keyword(s):  
Ambient Temperature ◽  
Crude Protein ◽  
High Ambient Temperature ◽  
Finishing Pigs ◽  
High Fat ◽  
Protein Diets

The effects of diets with reduced crude protein and digestible energy content on the performance of growing and finishing pigs and the characteristics of slurry produced

1999 ◽  
Vol 1999 ◽  
pp. 24-24
Author(s):  
P A Lee ◽  
A Armsby
Keyword(s):  
Crude Protein ◽  
Energy Content ◽  
Nutrient Balance ◽  
Carcass Characteristics ◽  
Finishing Pigs ◽  
N Retention ◽  
Digestible Energy ◽  
Reduced Crude Protein ◽  
Sparing Effect ◽  
Protein Diets

Formulating diets to match more closely the requirements of the pig for amino acids results in diets which are lower in crude protein (CP) than conventional commercial diets. The lower intake of nitrogen (N) which is concomitant with these diets results on lower N excretion. The excretion of excess N requires energy and previous nutrient balance work undertaken at Terrington (Lee and Kay, 1998) indicated that the ‘energy sparing’ effect of the reduced crude protein diets can be utilised by reducing the digestible energy (DE) content of reduced CP diets whilst at the same time maintaining the level of N retention. The objective of this work was to determine the performance carcass characteristics and slurry characteristics of growing/finishing pigs given reduced CP/DE diets.

scholarly journals Effects of high ambient temperature on lipid metabolism in finishing pigs

2016 ◽  
Vol 15 (2) ◽  
pp. 391-396 ◽  
Author(s):  
Xin WU ◽  
Ze-yang LI ◽  
An-feng JIA ◽  
Hong-guang SU ◽  
Chun-hong HU ◽  
...  
Keyword(s):  
Lipid Metabolism ◽  
Ambient Temperature ◽  
High Ambient Temperature ◽  
Finishing Pigs

scholarly journals Comparison of linear functions to estimate growth performance and feed intake variations pattern in growing and finishing pigs in high ambient temperature

2019 ◽  
Vol 44 (2) ◽  
pp. 177
Author(s):  
N. Lee ◽  
J. W. Choi ◽  
H. S. Ko ◽  
S. J. Ohh ◽  
Y. H. Kim ◽  
...  
Keyword(s):  
Ambient Temperature ◽  
Feed Intake ◽  
Mixed Model ◽  
Average Daily Gain ◽  
High Ambient Temperature ◽  
Linear Functions ◽  
Effect Of Temperature ◽  
Feed Ratio ◽  
Finishing Pigs ◽  
Linear Relationships

High ambient temperature (AT) is a major constraint on efficiency of farming in pig production. Results of reported studies assessing the influences of high AT on pig performance are highly variable, particularly in pigs with different body weight (BW). Therefore, a meta-analysis from ISI Web of Science and PubMed was operated to explain variations of average daily feed intake (ADFI) and average daily gain (ADG) in the reports across literatures during high AT in growing or finishing pigs. Pigs were divided to three BW categories as LOW (46 to 65 kg), MED (65< to 85 kg), and HGH (85< kg). The significant effect of AT on ADG were observed in LOW, MED, and HGH categories. The analysis of variance (ANOVA) for multiple linear regression shows significance of linear relationships between both ADG and ADFI, and AT and BW as: ADGLOW= 1260-19.9*AT+2.09*BW, ADGMED= 1546-22.5*AT-0.88*W, ADGHGH= 1893-31.9*AT-2.40*BW, ADFILOW= 1756-35.0*AT+24.6*BW, ADFIMED= 2793-49.6*AT+12.5*BW, and ADFIHGH= 4172-59.0*AT+0.74*BW. The significant effect of temperature on gain to feed ratio (G:F) was observed in LOW and HGH categories. The ANOVA for multiple regression revealed evidence on high significance of linear relationships between G:F and AT: G:FLOW =0.80+0.02*AT+0.02*BW, G:FMED= 0.95+0.02*AT+0.02*BW, and G:FHGH= 0.78+0.05*AT+0.01*BW. The overall results of mixed model analysis show that the significant interaction between BW and AT means that pigs in heavier category have lower G:F when temperature increases. In conclusion, high AT linearly decrease the ADG, ADFI, and G:F of growing and finishing pigs.

EFFECTS OF CULTIVAR ON THE UTILIZATION OF GROUND RAPESEE IN DIETS FOR GROWING–FINISHING PIGS

1977 ◽  
Vol 57 (1) ◽  
pp. 111-120 ◽  
Author(s):  
A. G. CASTELL
Keyword(s):  
Feed Intake ◽  
Crude Protein ◽  
Brassica Campestris ◽  
Energy Content ◽  
Finishing Pigs ◽  
Live Performance ◽  
Dietary Level ◽  
Low Erucic Acid ◽  
Protein Diets ◽  
Crossbred Pigs

Low erucic acid cultivars of Brassica campestris L. (Span and Torch) and B. napus L. (Midas and Tower) were used to examine the effects of cultivar on the performance of 132 crossbred pigs fed, from 23 kg to 89 kg liveweight, diets containing ground rapeseed. The oil percentages and levels of total glucosinolates (mg/g oil-free meal) were, respectively, 39.1 and 8.2 (Span), 40.2 and 7.8 (Torch), 44.7 and 12.0 (Midas), 43.2 and 3.4 (Tower). Growth rates on 17% crude protein diets containing 10% rapeseed in experiment 1 ranged from 637 g/day (Midas) to 797 g/day (Tower), a significant (P < 0.05) difference, although feed:gain ratios and carcass measurements did not differ significantly between the four dietary groups. Results from experiment 2, in which B. campestris cultivars were used as 0 and 10% of pelleted diets fed for two 45-min periods daily, indicated that rapeseed depressed daily feed intake and gain significantly (P < 0.01) but did not adversely affect carcass measurements. Increasing the dietary level of B. napus cultivars, from 0 to 15% in experiment 3, depressed daily feed intake and gain of pigs fed Midas (P < 0.05) or Tower (NS) diets. Feed:gain ratios and carcass data were similar to those of the control pigs. Although Midas-fed pigs exhibited poorer (P < 0.01) live performance, their carcasses had less backfat (P < 0.01) with higher Carcass Value Indices (P < 0.01) and Record of Performance Scores (P < 0.05) than those fed tower diets. Results from the three experiments suggested that inclusion of rapeseed influenced the performance of growing–finishing pigs by an effect upon both the energy content and glucosinolate level of the diet consumed.

236 Dietary Supplementation of Choline and Potassium in Low Crude Protein Diets on Growth and Carcass Performance of Finishing Pigs.

2018 ◽  
Vol 96 (suppl_2) ◽  
pp. 126-126
Author(s):  
J A Soto ◽  
M D Tokach ◽  
S S Dritz ◽  
J C Woodworth ◽  
J M DeRouchey ◽  
...  
Keyword(s):  
Crude Protein ◽  
Dietary Supplementation ◽  
Finishing Pigs ◽  
Carcass Performance ◽  
Protein Diets

Effects of high ambient temperature on meat quality, serum hormone concentrations, and gene expression in the longissimus dorsi muscle of finishing pigs

2017 ◽  
Vol 57 (6) ◽  
pp. 1031 ◽  
Author(s):  
Z. B. Shi ◽  
X. Y. Ma ◽  
C. T. Zheng ◽  
Y. J. Hu ◽  
X. F. Yang ◽  
...  
Keyword(s):  
Ambient Temperature ◽  
Meat Quality ◽  
Feed Intake ◽  
High Ambient Temperature ◽  
Finishing Pigs ◽  
Longissimus Dorsi Muscle ◽  
Group 3 ◽  
Group 2 ◽  
Intramuscular Fat Content ◽  
Group 1

This study examined the effect of high ambient temperature on the growth performance, meat quality, activity of the hypothalamo-pituitary-adrenal axis, and related gene expression in finishing pigs. All pigs received the same corn-soybean meal-based diet. Twenty-four Landrace pigs (initial bodyweight of 77.64 ± 0.67 kg) were assigned into three groups: Group 1 (22°C, ad libitum, 81% humidity); Group 2 (22°C, pair-fed to Group 3, 78% humidity); Group 3 (35°C, ad libitum, 78% humidity). The experiment lasted for 30 days. The average daily feed intake and average daily gain were markedly reduced in Group 3 compared with Group 1 (P < 0.05). The intramuscular fat content of longissimus dorsi muscle was decreased in Groups 2 and 3 (P < 0.05) when compared with Group 1. Muscle pH at 24 h post-mortem was higher in Group 3 (P < 0.05) compared with Groups 1 and 2, and the pH at 48 h post-mortem was higher in Group 3 (P < 0.05) than in Group 1. The MyHC IIb transcript abundance was lower in Group 3 (P < 0.05) than in the other two groups and that of MyHC IIx was higher in Group 3 than in Group 2 (P < 0.05). The relative abundance of calpastatin transcripts was lower in Group 3 (P < 0.05) than in the other two groups. Cortisol concentrations were lower in Group 3 (P < 0.05) than in Groups 1 and 2 on Day 3. Corticotropin releasing hormone concentrations in Group 3 were lower at Day 3 (P < 0.05) when compared with Group 2 and at Day 30 when compared with Groups 1 and 2. Glucagon concentrations were lower in Group 3 (P < 0.05) when compared with Groups 1 and 2 on Day 30. These results indicate that the decreased intramuscular fat content of pigs at high ambient temperature results from the reduction in feed intake. Independently of its effect on feed intake, high ambient temperature affected the meat quality of finishing pigs by increasing pH value probably due to the lower serum concentrations of corticotropin releasing hormone, and inducing a transition of muscle fibre types from IIb to IIx.

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