Effects of high ambient temperature and restricted feed intake on urinary and plasma 3-methylhistidine in lactating Holstein cows

2006 ◽  
Vol 77 (2) ◽  
pp. 201-207 ◽  
Author(s):  
Mitsuru KAMIYA ◽  
Yuko KAMIYA ◽  
Masahito TANAKA ◽  
Tomoyuki OKI ◽  
Yoichi NISHIBA ◽  
...  
Keyword(s):  
Ambient Temperature ◽  
Feed Intake ◽  
High Ambient Temperature ◽  
Holstein Cows ◽  
Restricted Feed Intake

The effect of ambient temperature on feed intake and diet selection in growing lambs

1992 ◽  
Vol 1992 ◽  
pp. 166-166
Author(s):  
M.R. Cropper ◽  
D.P. Poppi
Keyword(s):  
Ambient Temperature ◽  
Protein Content ◽  
Feed Intake ◽  
Free Choice ◽  
Environmental Temperature ◽  
Diet Selection ◽  
High Ambient Temperature

Lambs are known to change their feed intake in relation to environmental temperature (Blaxter, 1962). However, their ability to select a non-limiting diet, when free-choice fed, has only been investigated in a thermoneutral environment (Cropper, 1987). The aim of this experiment was to test the idea that, at low and high ambient temperature, (a) feed intake would increase in the cold and decrease in the hot, relative to a thermoneutral control, and that (b) the protein content of the diet selected would be lower and higher respectively.

Foetal stunting in sheep: 2. The effects of high ambient temperature during gestation on wool follicle development in the foetal lamb

1976 ◽  
Vol 86 (3) ◽  
pp. 581-585 ◽  
Author(s):  
G. A. Cartwright ◽  
C. J. Thwaites
Keyword(s):  
High Temperature ◽  
Ambient Temperature ◽  
Feed Intake ◽  
High Ambient Temperature ◽  
Follicle Development ◽  
Apparent Effect ◽  
New Born ◽  
Wool Growth ◽  
Wool Follicle ◽  
Foetal Lamb

SummaryHotroom treatment of ewes during the last two-thirds of gestation resulted in the birth of lambs which were significantly lighter than lambs born to nutritionallydeprived ewes. Neither high temperature nor undernutrition had significant effect on the density of either primary or immature secondary wool follicles, but the total number of mature secondary follicles tended to decline in the lambs from unheated ewes as the level of nutrition declined, and was significantly reduced by a further 30 % in the hotroom group.In a second experiment, heated and unheated ewes fed to appetite were compared with unheated ewes pair-fed to the hotroom level of feed intake. High temperature had no apparent effect on maternal wool growth, but did reduce total wool follicle number in new-born lambs by approximately 50%. This effect was most marked with respect to mature secondary follicles (only 18% of unheated mean), less so in immature secondaries (56% of unheated mean), and barely discernible amongst primary follicles (93% of unheated mean). None of the differences in follicle numbers between the two unheated groups was significant.The results suggest that the effects of high temperature on wool follicle development in the sheep foetus are akin to those of extreme undernutrition.

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 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.

The effects of duration of sprinkling and temperature of the drinking water on the feed intake and growth of pigs at high ambient temperature

1987 ◽  
Vol 109 (2) ◽  
pp. 409-410 ◽  
Author(s):  
C. Vajrabukka ◽  
C. J. Thwaites ◽  
D. J. Farrellf
Keyword(s):  
Drinking Water ◽  
Adverse Effects ◽  
Ambient Temperature ◽  
High Temperatures ◽  
Feed Intake ◽  
High Ambient Temperature

Morrison et al. (1972), Hsia, Fuller & Koh (1974), and Ho & Khoo (1977) showed that sprinkling can alleviate the adverse effects (Straub et al. 1976) of high ambient temperature on feed intake and growth of pigs. Vajrabukka, Thwaites & Farrell (1986) demonstrated that pigs need to be thoroughly wet by sprinkling at least once every 60 min if high evaporative rates are to be maintained, but little is known of the relative benefits of different sprinkling regimes for pigs growing at high temperatures.

scholarly journals High ambient temperature and child emergency and hospital visits in New York City

2021 ◽  
Author(s):  
Li Niu ◽  
Maria Teresa Herrera ◽  
Blean Girma ◽  
Bian Liu ◽  
Leah Schinasi ◽  
...  
Keyword(s):  
New York ◽  
New York City ◽  
Ambient Temperature ◽  
York City ◽  
High Ambient Temperature ◽  
Hospital Visits
Sign in / Sign up

Export Citation Format

Share Document