The responseof plasma leptin and feed intake to growth hormone administration in Holstein calves with different planes of nutrition

Lee, H. G.; Zhang, Hong; Kim, M. K.; Kang, Soo‐Kyung; Xu, Cheng-Xiong; Cho, Jung Sang; Seo, Kang Seok; Roh, Sang Gun; Choi, Yun‐Jaie

doi:10.4141/a05-009

Cited by 5 publications

(5 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Leptin concentration increased after 20 days on concentrates in period 2 in the LUC 1 Feedlot treatment, confirming its rapid response to higher feeding levels (Chilliard et al, 1999;Lee et al, 2006). Leptin was correlated with BW as reported in growing bulls by Geary et al (2003) and Bellmann et al (2004), who also found positive correlations between serum leptin and the amount of fat in different deposits.…”

Section: Discussionmentioning

confidence: 60%

“…Changes in this status can alter concentrations of blood metabolites like non-esterified fatty acids (NEFA), which reflect fat mobilization, and hormones such as IGF-I and leptin (Lee et al, 2006). Serum IGF-I concentration is related to nutritional status and protein deposition (Ellenberger et al, 1989;Hornick et al, 2000), while leptin concentration is related to adiposity and feed intake (Chilliard et al, 1999), and therefore they might be useful to predict performance at key moments of the production cycle.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Grazing lucerne as fattening management for young bulls: technical and economic performance and diet authentication

Alibés

Joy

Ripoll

et al. 2011

Animal

View full text Add to dashboard Cite

Three fattening systems were evaluated from weaning to slaughter in order to find alternatives to grain feeding in young bulls, and to test the reliability of carcass subcutaneous fat colour to discriminate among them. After weaning (224 kg), one group of animals was fed concentrates and straw until they reached the target slaughter weight (450 kg; Feedlot), another group grazed rotationally on lucerne supplemented with 1.8 kg DM/day barley until slaughter (LUC), and the third group had the same management as LUC animals for 3 months (period 1) and thereafter was finished on concentrates and straw until slaughter (period 2; LUC + Feedlot). Animals were weighed weekly and sampled monthly for serum IGF-I and leptin, and plasma non-esterified fatty acids and carotenoid pigment concentration analyses. Carcass characteristics and subcutaneous fat colour were recorded after slaughter. In period 1, Feedlot animals had slightly greater weight gains than their grazing counterparts (P< 0.10), and at the end of period 1 they had 66% greater IGF-I and 35% greater leptin concentration (P< 0.01). Plasma carotenoid pigments were undetectable in Feedlot animals, but increased during grazing in LUC and LUC + Feedlot treatments. In period 2, weight gains were lowest for LUC, intermediate for Feedlot and greatest for LUC + Feedlot animals (P< 0.001), conditioning the time taken to reach slaughter weight (73, 58 and 47 days, respectively;P< 0.05). Leptin and IGF-I concentrations increased in all management systems during period 2. Plasma carotenoid pigment concentration reached its maximum at the end of period 2 in LUC animals, but it decreased sharply in LUC + Feedlot animals in this period. Management did not affect carcass traits except for subcutaneous fat colour. Yellowness, Chroma (C*) and the value of the integral of the translated reflectance spectrum (SUM), estimator of carotenoid pigment content in fat, were higher in LUC than in LUC + Feedlot and Feedlot animals (P< 0.001). Two logistic regressions were obtained to discriminate carcasses from LUC treatment: P (LUC) = (1 + e18.8–5.6 × lightness–36.9 × redness + 0.3 × SUM + 29.8 × C*)−1and LUC + Feedlot treatment: P (LUC + Feedlot)=(1 + e833.7–11.8 × lightness + 4.7 × redness + 0.2 × SUM−2.5 × C*)−1. The economic margin, calculated as income achieved minus costs, was greatest for LUC, intermediate for LUC + Feedlot and lowest for Feedlot treatment. Therefore, grazing lucerne supplemented with barley was an interesting alternative for fattening young bulls in these conditions, producing carcasses of similar quality, which could be accurately traced by measuring subcutaneous fat colour.

show abstract

Section: Discussionmentioning

confidence: 60%

Section: Introductionmentioning

confidence: 99%

Grazing lucerne as fattening management for young bulls: technical and economic performance and diet authentication

Alibés

Joy

Ripoll

et al. 2011

Animal

View full text Add to dashboard Cite

show abstract

“…In contrast low leptin in underfed animals can stimulate feed intakes and modulate metabolic responses (Ahima et al, 1996;Friedman and Halaas 1998;Heiman et al, 1998). In calves, Lee et al (2006) showed that leptin concentrations reflect changes in nutritional status in calves of 5 mo, whereas leptin decreases with feed restriction, it increases with refeeding. This could mean that lower leptin concentrations are coupled with hunger, which is consistent with the lower concentrations at weaning (d 56) compared with the ad libitum phase (d 28) in the current study.…”

Section: Discussionmentioning

confidence: 99%

Macronutrient profile in milk replacer or a whole milk powder modulates growth performance, feeding behavior, and blood metabolites in ad libitum-fed calves

Wilms

Ghaffari

Steele

et al. 2022

Journal of Dairy Science

View full text Add to dashboard Cite

Milk replacers (MR) for calves usually contain more lactose and less fat than bovine whole milk (WM). There are insufficient data to determine whether these MR formulations are optimal for calves fed at high planes of nutrition. Thus, the effect of 3 MR formulations and a WM powder were evaluated on growth, feeding behavior, and blood metabolites in 96 male Holstein calves fed ad libitum and with 45.5 ± 4.30 kg (mean ± SD) BW at arrival. Calves were blocked based on arrival sequence, and randomly assigned within block to one of the 4 treatments (n = 24 calves/ group): a high-fat MR (25.0% fat, dry matter basis; 22.5% protein, 38.6% lactose; 21.3 MJ/kg; HF), a high lactose MR (44.6% lactose, 22.5% protein, 18.0% fat; 19.7 MJ/kg; HL), a high protein MR (26.0% protein, 18.0% fat, 41.5% lactose; 20.0 MJ/kg; HP), and a WM powder (26.0% fat; 24.5% protein, 38.0% lactose; 21.6 MJ/kg; WP). In the first 2 wk after arrival, calves were individually housed and were fed 3.0 L of their respective liquid feed 3 times daily at 135 g/L. They were then moved to group housing and fed ad libitum until d 42 after arrival. Weaning was gradual and took place between d 43 and 70 after arrival; thereafter, calves were fed solids only. Concentrates, chopped straw, and water were available ad libitum throughout the study. Body weight was measured, and blood was collected at arrival and then weekly thereafter from wk 1 to 12. Weight gain and height were greater in HL than WP calves. In the preweaning phase, HL and HP-fed calves consumed more milk than WP, and HL-fed calves consumed more milk than HF calves. In wk 10, starter feed intakes were lower in HF calves than in the other groups. In the preweaning phase, ME intakes were the same for all treatments. This suggests that milk intakes were regulated by the energy density of the milk supplied. The percentage of calves requiring therapeutic interventions related to diarrhea was greater in WP-fed calves (29%) than HF and HL calves (4%), whereas HP (13%) did not differ with other groups. This was coupled with lower blood acid-base, blood gas, and blood sodium in WP than in MR-fed calves. Calves fed HF had greater serum nonesterified fatty acids compared with other groups, and greater serum amyloid A compared with WP and HL calves. Among the serum parameters, insulin-like growth factor-1 and lactate dehydrogenase correlated positively with ME intake and average daily gain. The high lactose and protein intakes in HL and HP calves led to greater insulin-like growth factor-1 concentrations than in WP-fed calves. Although growth differences were limited among MR groups, the metabolic profile largely differed and these differences require further investigation.

show abstract

“…This result may be attributed to the increases in voluntary feed intake as DM and TDN (Tables 5 & 6). In addition, GH plays an important role in regulating whole-body energy utilization and well-lipolytic action (Lee et al, 2006). Furthermore, Brian et al (2004) showed that GH had the mechanism to act on an increase in growth rate, feed consumption, and whole-body fat deposition.…”

Section: Discussionmentioning

confidence: 99%

Predicting the Productive and Reproductive Performance of Egyptian Baladi Calves as a Response to Growth Rate Associated With Growth Hormone Level

2019

Assiut Veterinary Medical Journal

View full text Add to dashboard Cite

The responseof plasma leptin and feed intake to growth hormone administration in Holstein calves with different planes of nutrition

Cited by 5 publications

References 41 publications

Grazing lucerne as fattening management for young bulls: technical and economic performance and diet authentication

Grazing lucerne as fattening management for young bulls: technical and economic performance and diet authentication

Macronutrient profile in milk replacer or a whole milk powder modulates growth performance, feeding behavior, and blood metabolites in ad libitum-fed calves

Predicting the Productive and Reproductive Performance of Egyptian Baladi Calves as a Response to Growth Rate Associated With Growth Hormone Level

Contact Info

Product

Resources

About