Effect of environmental temperature and feeding level on energy balance traits of early-weaned piglets

Noblet, Jean; Dividich, Jean Le

doi:10.1016/0301-6226(82)90008-2

Cited by 23 publications

(4 citation statements)

References 13 publications

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“…The night temperature achieved in these trials and the overall average temperatures (table 6) were lower than the lower critical temperature reported by Nobler and LeDividich (1982) for pigs of similar size as those used in these experiments. They concluded that constant temperatures starting at 28 C and lowered 2 C/wk were close to the critical temperature pattern of 3-wkold, weaned pigs.…”

Section: Discussioncontrasting

confidence: 56%

Reduced Nocturnal Temperatures for Early Weaned Pigs2

Brumm¹,

Shelton²,

Johnson³

1985

Journal of Animal Science

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Three experiments of 5 wk duration were conducted to evaluate the effect of reduced nocturnal temperatures (RNT) on weaned pig performance. Treatments were 1) a control regimen (CR) of 30 C constant air temperature lowered 2 C/wk and 2) a regimen where the temperature from 1900 to 0700 h was lowered to 25 C for three nights followed by 20 C for four nights during the first week and then lowered 1 C/wk thereafter (RNT

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Section: Discussioncontrasting

confidence: 56%

Reduced Nocturnal Temperatures for Early Weaned Pigs2

Brumm¹,

Shelton²,

Johnson³

1985

Journal of Animal Science

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“…One of the reasons for this inconsistency may be due to the differences in BW at slaughter between heat-stressed and non-heat-stressed pigs. For example, results from some studies have shown that backfat was greater in pigs housed in heat-stress conditions compared with a non-heat-stress environment when pigs were slaugh-tered at a similar BW (Noblet and Le Dividich, 1982;Close and Stanier, 1984;Kouba et al, 2001). However, others have reported less or unchanged carcass fatness of heat-stressed pigs when pigs were slaughtered at a constant time period, which these authors attributed to the lighter BW of the heat-stressed pigs (Nienaber and Hahn, 1983;Giles et al, 1988;Rinaldo and Le Dividich, 1991).…”

Section: Carcass Compositionmentioning

confidence: 99%

Effects of feeding diets containing bacitracin methylene disalicylate to heat-stressed finishing pigs

Song

Foster

Shurson

2011

Journal of Animal Science

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The objective of this study was to evaluate the effects of heat stress and dietary bacitracin methylene disalicylate (BMD) on growth performance, carcass characteristics, and immunological responses in finishing pigs. Four groups of 32 finishing pigs (n = 128) with initial BW between 80 to 90 kg were used. Pigs were fed a corn-soybean meal-distillers grains-based control or BMD (31.5 mg/kg) diet for a 14-d adaptation period at the thermal neutral temperature (23°C), and continued to be fed their respective diets when exposed to a constant temperature (23°C) or a cyclical heat stress environment (37°C from 1000 to 1900 h and 27°C from 1900 to 1000 h) for a 28-d experimental period. Each group of pigs was housed in 4 rooms, with 2 pens/room and 4 pigs/pen. Saliva samples from each pig were collected on d -1 (initial baseline), 1, 13, and 27 for cortisol analysis. Concentrations of haptoglobin, IL-1β, and tumor necrosis factor-α were determined in serum samples on d -1, 1, 13, and 27. Pigs exposed to heat stress had 31% less ADG (P < 0.001), 23% less ADFI (P < 0.001), 9% less G:F (P < 0.001), and 34% greater average daily water intake (P = 0.03) than those in the non-heat-stress conditions. Dietary BMD tended to reduce ADG (P < 0.07) compared with the control (0.66 vs. 0.73 kg/d, respectively). Heat stress increased (P < 0.05) saliva cortisol on d 1, but no effects were observed on subsequent days. Serum haptoglobin concentrations were greater (P < 0.05) in heat-stressed pigs on d 1, and concentrations tended to remain greater (P < 0.1) on d 13. Pigs fed the BMD diet tended to have a longer villus height (P = 0.07) in the duodenum and greater crypt depths in the duodenum (P = 0.09) and jejunum (P = 0.07). Heat-stressed pigs tended to have a decreased proportion of propionate (P = 0.08), greater acetate:propionate (P = 0.08), and a reduced proportion of valerate (P = 0.02) in the cecum. These results indicate that BMD did not counteract the negative effects of heat stress on growth performance, but BMD appears to increase villus height and crypt depth in the duodenum. Furthermore, heat stress appears to alter VFA production in finishing pigs.

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“…The thermal environment in which a pig is maintained influences its voluntary feed intake, and therefore, the rate, efficiency and composition of gain (Verstegen et al, 1978;Noblet and LeDividich, 1982;Close and Stanier, 1984). Pigs kept in a cool environment (relative to thermoneutrality) consume more feed and are less efficient for growth because of their elevated energy demand to produce heat required for maintaining body temperature (Holmes and Close, 1977).…”

Section: Effects Of Environmental Factorsmentioning

confidence: 99%

Use of plasma urea nitrogen as a rapid response criterion to estimate the lysine requirements of growing and lactating pigs

Coma

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Introduction Materials and Methods Results and Discussion Relationship of plasma urea N with lean tissue growth Variation in the plasma urea N response to dietary lysine Implications Literature Cited CHAPTER 5. INTERACTIVE EFFECTS OF FEED INTAKE AND STAGE OF GROWTH ON THE LYSINE REQUIREMENT OF PIGS Abstract Introduction Materials and Methods Results and Discussion Implications Literature Cited CHAPTER 6. LYSINE REQUIREMENT OF THE LACTATING SOW DETERMINED BY USING PLASMA UREA NITROGEN AS A RAPID RESPONSE CRITERION Abstract Introduction Materials and Methods Results and Discussion Preliminary experiment Main experiment Implications Literature Cited 126 CHAPTER 7. GENERAL SUMMARY 136 ACKNOWLEDGMENTS 139 APPENDIX. EQUATIONS TO ESTIMATE BODY COMPOSITION 140 accurately estimate the dietary lysine required to maximize total N utilization in pigs at a specific BW. In addition, the two-slope broken-line regression model had the highest R^ and lowest MSE when compared with three other models as means for estimating lysine requirement from PUN concentrations.

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Effect of environmental temperature and feeding level on energy balance traits of early-weaned piglets

Cited by 23 publications

References 13 publications

Reduced Nocturnal Temperatures for Early Weaned Pigs2

Reduced Nocturnal Temperatures for Early Weaned Pigs2

Effects of feeding diets containing bacitracin methylene disalicylate to heat-stressed finishing pigs

Use of plasma urea nitrogen as a rapid response criterion to estimate the lysine requirements of growing and lactating pigs

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