Stimulation of Pig Growth Performance by Porcine Growth Hormone and Growth Hormone-Releasing Factor

Etherton, Terry D.; Wiggins, J. P.; Chung, C. S.; Evock, Christina M.; Rebhun, John F.; Walton, P. E.

doi:10.2527/jas1986.6351389x

Cited by 181 publications

(70 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…These data compare favorably with the results reported by Chung et al (1985), Etherton et al (1986), Evock et al (1988), Goodband et al (1990) and Krick et al (1992). Treatment with pST depressed ADF (-7%; P < 0.01), consistent with the findings of Evock et al (1988), Goodband et al (1990) and Krick et al (1992).…”

Section: Animal Performancesupporting

confidence: 82%

The effects of porcine somatotropin, gender and porcine stress syndrome on growth, carcass composition and pork quality

Dugan¹,

Tong²,

Carlson³

et al. 1997

Can. J. Anim. Sci.

View full text Add to dashboard Cite

. 1997. The effects of porcine somatotropin, gender and porcine stress syndrome on growth, carcass composition and pork quality. Can. J. Anim. Sci. 77: 233-240. Lacombe breed pigs (72 gilts, 72 barrows) of three genotypes with respect to the porcine stress syndrome (normal, heterozygous, or homozygous for the halothane gene), were treated from 57 to 106 kg body weight with daily injections of 0.9% saline containing 0 or 3 mg of recombinant porcine somatotropin (pST) in a randomized block design. Pigs receiving pST had lower average daily feed intakes (ADF), greater average daily gains (ADG) and lower feed conversion efficiencies (FCE). Gilts relative to barrows had lower ADG, ADF and higher FCE. Gilts versus barrows and pigs treated with pST had reduced fat depths and greater loin depths at the 10th rib. Pigs homozygous for the halothane gene had reduced loin lean structure and color scores, greater light reflectance (L * ), and lower soluble protein contents as expected, and these genotypic effects did not interact with pST treatment. Sex by pST treatment interactions (P < 0.05) were found for loin depth, moisture content, color score and L * values indicating barrows respond more favorably to pST treatment than gilts. Generally, pST treatment, gilts relative to barrows, and possession of the halothane gene increased carcass lean and reduced subcutaneous fat levels. Sex by pST treatment interactions were found for picnic lean (lower shoulder; P < 0.05), ham lean (P < 0.05), and total carcass lean (P = 0.09) further supporting the theory that barrows benefit more than gilts to pST treatment. No significant interactions were found between genotype and pST treatment for any qualitative muscle traits. Thus, pST treatment had no direct effect on meat quality and was not found to interact with the halothane gene. However, pST interactions with sex indicated barrows respond quantitatively and qualitatively more favorably than gilts to pST treatment.Key words: Somatotropin, porcine somatotropin, pork, porcine stress syndrome, stress, pigs, growth Dugan, M. E. R., Tong, A. K. W., Carlson, J. P., Schricker, B. R., Aalhus, J. L., Schaefer, A. L., Sather, A. P., Murray, A. C. et Jones, S. D. M. 1997. Effets de la somatotropine porcine, du genre et du syndrome du stress porcin sur la croissance, sur la composition de la carcasse et sur la qualité de la viande chez le porc. Can. J. Anim. Sci. 77: 233-240. Des porcs de race Lacombe, 72 cochettes et 72 castrats, appartenant à trois génotypes différents selon la sensibilité au syndrome du stress porcin (normal, hétérozygote ou homozygote pour le gene de sensibilité à l'halothane) ont reçu, à partir du poids de 57 jusqu'à celui de 106 kg, des injections journalières d'un soluté à 0,9 % contenant 0 ou 3 mg de somatotropine porcine recombinante (rbST). L'expérience était conduite selon un dispositif aléatoire par blocs. Les sujets recevant la rbST manifestaient un taux d'ingestion moyen (T.I.) plus bas, un meilleur GMQ et un moindre indice de conversion (IC). Par rapport aux castr...

show abstract

Section: Animal Performancesupporting

confidence: 82%

The effects of porcine somatotropin, gender and porcine stress syndrome on growth, carcass composition and pork quality

Dugan¹,

Tong²,

Carlson³

et al. 1997

Can. J. Anim. Sci.

View full text Add to dashboard Cite

show abstract

“…The first scenario assumes a 25.1 percent improvement in feed efficiency and 6.6 percent increase in sale weight for market hogs ( Table 2). The improvement in feed efficiency in the first scenario assumes a 12.7 percent increase in average daily gain, based on the range of results reported by Etherton, et al (1986), Etherton, et al (1987), and McLaren, et al (in Meisinger).…”

Section: Technology Scenariosmentioning

confidence: 99%

Economic Incentives for PST Adoption by Midwest Hog Producers

Richardson

Anderson

Peel

et al. 1993

J. Agric. Appl. Econ.

View full text Add to dashboard Cite

A whole-farm simulation model is used to analyze the impacts of PST adoption on representative farms in Missouri and Indiana. Farmers who do not adopt experience lower average annual net cash farm incomes than adopters. Lower feed prices and/or an average PST/feed response decrease the incentive to adopt. Payment of a 5 percent carcass merit premium (CMP) and/or higher grain prices greatly increase the economic incentive to adopt.

show abstract

“…Kelley et al (1995) reported greater loin muscle development and carcass length in slaughter pigs derived from sows treated with ST between days 28 and 40 of gestation, whereas Kuhn et al (2004) found a lower meat percentage and more exudative loin in slaughter pigs born to ST-treated sows (10-27 d of gestation). Human GRF is a powerful stimulator of GH in growing pigs (Etherton et al 1986;Dubreuil et al 1988). Indeed, injecting sows with an analog of GRF in late gestation (Etienne et al 1992) increased body weight at birth and weaning, and exogenous GRF in early gestation (Mulvaney et al 1998) increased muscle mass in foetuses.…”

mentioning

confidence: 99%

Growth-hormone-releasing factor given to early-pregnant Genex-Meishan and Large White gilts: Effects on growth, carcass, meat quality and histochemical traits of the progeny

Faucitano¹,

Pomar²,

Gariépy³

et al. 2005

Can. J. Anim. Sci.

View full text Add to dashboard Cite

Faucitano, L., Pomar, C., Gariépy, C. and Farmer, C. 2005. Growth-hormone releasing factor given to early-pregnant GenexMeishan and Large White gilts: Effects on growth, carcass, meat quality and histochemical traits of the progeny. Can. J. Anim. Sci. 85: 37-46. The objective of this study was to determine the effects of growth hormone-releasing factor (GRF) given in early gestation on post-weaning performance, carcass and meat quality and histochemical properties of two pig genotypes. Large White (LW, n = 10) and Genex Meishan-derived dam line (GM, with 50% Meishan genes, n = 10) gilts were treated during gestation with either saline injections (control, n = 5 LW and 5 GM), or 6.6 µg kg -1 of a GRF analog (n = 5 LW and 5 GM), given thrice daily from days 18 to 33 of gestation. After birth, at 56 d of age, four piglets (two barrows and two gilts) each from 20 litters were selected, allotted into individual pens and grown to slaughter weight (108.2 ± 2.3 kg). Feed intake was measured daily and pigs were weighed weekly. Prenatal GRF treatment had a detrimental effect (P < 0.05) on daily gain in both genotypes, but did not affect carcass quality. Significant interactions between GRF, genotype and sex (P < 0.01) for colour traits of the longissimus (L) and semimembranosus (SM) muscles and between GRF and genotype (P < 0.01) for shear force of the L muscle were found. GM pigs had lower growth rate (P < 0.01), higher feed intake (P < 0.05), fatter and shorter carcass (P < 0.001) than LW. L and SM muscles from GM pigs were less exudative (P < 0.05) than LW. L muscle from LW had higher percentages of slow oxidative (SO) (P < 0.001) and fast oxidative glycolytic (FOG) (P < 0.01) fibres but lower percentage of fast glycolytic (FG) fibres (P < 0.001) than that of GM. The results suggest that GRF given in early lactation reduces post-weaning growth of pigs from either breed, but does not affect carcass quality. GM pigs have poorer carcass quality than LW.Key words: Gestating gilts, growth hormone releasing factor, growth, carcass characteristics, meat quality traits, muscle fibre, pig Faucitano, L., Pomar, C., Gariépy, C. et Farmer, C. 2005. Apport de somatocrinine exogène en début de gestation chez des cochettes Genex-Meishan et Large White : effets sur la croissance, la qualité de la carcasse, la qualité de la viande et les propriétés histochimiques de la progéniture. Can. J. Anim. Sci. 85: 37-46. L'objectif de cette étude était de déterminer les effets de l'apport de somatocrinine en début de gestation sur les performances post-sevrage, la qualité de la carcasse et la qualité de la viande des deux lignées génétiques de porcs. Des cochettes gravides LW (n = 10) et GM (avec 50% de gènes Meishan; n = 10) ont été traitées durant la gestation avec des injections de saline (contrôle; n = 5 LW et 5 GM) et; 2) et de 6,6 µg kg -1 d'un analogue de la somatocrinine (n = 5 LW et 5 GM), données trois fois par jour des jours 18 à 33 de gestation. À 56 jours d'âge, quatre porcelets (deux mâles castrés et deux cochettes) ont été sélecti...

show abstract

Stimulation of Pig Growth Performance by Porcine Growth Hormone and Growth Hormone-Releasing Factor

Cited by 181 publications

References 22 publications

The effects of porcine somatotropin, gender and porcine stress syndrome on growth, carcass composition and pork quality

The effects of porcine somatotropin, gender and porcine stress syndrome on growth, carcass composition and pork quality

Economic Incentives for PST Adoption by Midwest Hog Producers

Growth-hormone-releasing factor given to early-pregnant Genex-Meishan and Large White gilts: Effects on growth, carcass, meat quality and histochemical traits of the progeny

Contact Info

Product

Resources

About