The comparison of plasma level and mRNA expression of leptin from Japanese Black steers and Holstein steers

Higashiyama, Yumi; Abé, Hiroyuki; Hayashi, Masayuki; Hodate, Koichi

doi:10.1016/s0301-6226(02)00254-3

Cited by 18 publications

(21 citation statements)

References 17 publications

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“…The increase of leptin concentrations during fattening has been reported previously in beef cattle (Higashiyama et al, 2003;Bellmann et al, 2004), associated both to increased nutrient intake and to the amount of body fat. The reason for the higher serum leptin concentrations of S calves at slaughter compared to their NS counterparts remains unclear, as fatness score or intramuscular fat were similar between them.…”

Section: Discussionsupporting

confidence: 64%

“…However, in the current experiment fatness score had a narrow variability range, which could have interfered in the correlation obtained. Leptin concentrations before slaughter were also suggested as a predictor of intramuscular fat in Wagyu and Holstein steers (Higashiyama et al, 2003), breeds with a higher intramuscular fat than the one used in the current study, but such relationship was not significant in our experiment as calves were probably too lean for displaying a conclusive relation of body fat and circulating leptin concentrations.…”

Section: Discussioncontrasting

confidence: 61%

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Effects of pre-weaning concentrate feeding on calf performance, carcass and meat quality of autumn-born bull calves weaned at 90 or 150 days of age

Alibés

Mata

Ripoll

et al. 2008

Animal

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A study was conducted to evaluate the effect of pre-weaning concentrate feeding in early-weaned (EW, day 90) or traditionally weaned (TW, day 150) autumn-born beef calves on growth, feed intake and feed efficiency, and carcass and meat quality. Twenty-eight male calves were either EW or TW, and offered a starter concentrate (S) or no additional feed (NS) during the pre-weaning period. Therefore, four management strategies were tested: EWS, EWNS, TWS and TWNS. Growth patterns were affected by management strategy. From day 90 to 150, TWNS calves presented a substantially lower average daily gain (ADG) than their counterparts, which had similar performance. During the finishing phase (from day 150 to slaughter at 450 kg live weight), EWS calves had the lowest ADG. Daily feed intake or efficiency in the finishing phase was unaffected by previous management. Serum IGF-I concentrations at day 90 and slaughter did not differ with management strategy, but early weaning and pre-weaning concentrate feeding increased IGF-I concentrations at day 150. Circulating leptin concentrations were unaffected by age at weaning and pre-weaning concentrate feeding, except for leptin concentrations at slaughter, which were higher in S calves than in NS calves. Total concentrate intake from birth to slaughter and the concomitant feed costs were higher for EWS and EWNS calves than for TWNS and TWS ones. However, cow feed costs were lower for cows whose calves had been early weaned. Concerning carcass quality, early weaning improved dressing percentage and increased fatness score, and particularly TWNS calves presented a poorer conformation. Meat quality was not affected by management strategy. Considering the economic performance, TWS, EWNS and EWS strategies yielded a similar economic margin, whereas TWNS would be the least advisable strategy when calves are fattened in the farm until slaughter.

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Section: Discussionsupporting

confidence: 64%

Section: Discussioncontrasting

confidence: 61%

Effects of pre-weaning concentrate feeding on calf performance, carcass and meat quality of autumn-born bull calves weaned at 90 or 150 days of age

Alibés

Mata

Ripoll

et al. 2008

Animal

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“…Higashiyama et al (2003) reported that, the leptin mRNA expression levels were more related with subcutaneous adipose tissue but not with omental adipose tissue in different breed cattle. Also, Montague et al (1998) reported similar results in humans.…”

Section: Estimation Of Fat Tissues and Fat Amount From Leptinmentioning

confidence: 95%

“…For instance, Altmann et al (2005Altmann et al ( , 2006 reported that carcase fat variations were explained by using leptin alone between 23% (p < .05) and 34% (p < .05) for different sheep breeds. On the other hand, Higashiyama et al (2003) reported that carcase fatness was explained by leptin 68% (p < .05) and 39% (p >.05) for different cattle breeds. It can be concluded that leptin is not a strong predictor like for omental fat but it offers an opinion and on the other hand, BW and UFT were not the predictors for dissected fat in male Awassi lambs.…”

Section: Estimation Of Fat Tissues and Fat Amount From Leptinmentioning

confidence: 96%

“…The results were anticipated because previous studies indicated similar results for different species and breeds in this trait. For instance, Higashiyama et al (2003) reported serum leptin level was positively related to carcase fatness (r ¼ 0.69, p < .05) in Japanese Black steers and Altmann et al (2006) reported a lower correlation coefficient (r ¼ 0.41, p < .05) for male lambs at 40 kg BW. Also, Kuznicka et al (2017) reported an other lower correlation coefficient (r ¼ 0.41, p < .05) but it was for low weight (20, 25 and 30 kg) BWs male merino lambs.…”

Section: Relationship Between Leptin and Fat Tissues Amountmentioning

confidence: 99%

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The usefulness of leptin measurements and ultrasound fat thickness for assessment of body fat reserves of Awassi lambs

Orman

Caliskan

Temizel

et al. 2018

Italian Journal of Animal Science

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The objective of this study was to investigate the usefulness of leptin measurements for predicting back fat thickness and the amount of carcase fat in lambs with varying body weights (BWs). Blood samples were taken from 20 male Awassi lambs at 20, 25, 30, 35, and 40 kg BW. Tail, omental, dissected, and total fat were measured at slaughter (40 kg BW). Ultrasound fat thickness (UFT) increased with BW (p < .05) whereas leptin concentration tended to increase (p ¼ .09). Serum leptin concentration was correlated with BW for 25, 30, 35, and 40 kg BW (r ¼ 0.53, 0.52, 0.51 and 0.61, respectively; p < .05) and with UFT for 30, 35, and 40 kg BW (r ¼ 0.50, 0.51 and 0.59, respectively; p < .05); therefore it appears that leptin concentration is not a suitable predictor for BW and UFT in low BW lambs. In addition, similar correlations were found for leptin concentration and hot carcase, omental, dissected, and total fat weights (r ¼ 0.62, 0.64, 0.66 and 0.76, respectively; p < .05) but not for tail fat (p >.05 for 40 kg BW). The introduction of UFT and BW as independent variables in addition to leptin in the multiple regression equations improved the predictions for carcase fat only (57.6%, p < .05; 57.8%, p < .05 and 60.7%, p > .05 for leptin, leptin þ UFT and leptin þ BW, respectively). Leptin was a single predictor for omentum and dissected fat (41.4%, p < .05 and 43.5%, p < .05 respectively) whereas no improvement was observed for tail fat (p > .05). The other variables (UFT and BW) were not a predictor (p > .05) except for total fat (p > .05). These results indicate that serum leptin concentration in association with BW and UFT could be used to estimate total fat (tail, omental and dissectible carcase fat) in male Awassi lambs. ARTICLE HISTORY

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Leptin expression in ruminants: Nutritional and physiological regulations in relation with energy metabolism

Chilliard

Delavaud

Bonnet

2005

Domestic Animal Endocrinology

252

183

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The comparison of plasma level and mRNA expression of leptin from Japanese Black steers and Holstein steers

Cited by 18 publications

References 17 publications

Effects of pre-weaning concentrate feeding on calf performance, carcass and meat quality of autumn-born bull calves weaned at 90 or 150 days of age

Effects of pre-weaning concentrate feeding on calf performance, carcass and meat quality of autumn-born bull calves weaned at 90 or 150 days of age

The usefulness of leptin measurements and ultrasound fat thickness for assessment of body fat reserves of Awassi lambs

Leptin expression in ruminants: Nutritional and physiological regulations in relation with energy metabolism

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