The effect of lysine/digestible energy ratio on growth performance and nitrogen deposition of hybrid boars, gilts and castrated male pigs

Lunen, T. A. Van; Cole, D. J. A.

doi:10.1017/s1357729800015368

Cited by 39 publications

(38 citation statements)

References 19 publications

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“…Body size and body tissue composition are known to be in¯uenced by dietary protein intake (Nakagawa & Masana, 1971;Cameron & Eshelman, 1996;Van Lunen & Cole, 1996).…”

Section: Introductionmentioning

confidence: 99%

Maternal dietary protein intake and sex‐specific investment in Mastomys coucha (Rodentia: Muridae)

Lamb

Aarde

2001

Journal of Zoology

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We examined data on captive multi-mammate mice (Mastomys coucha) to assess differential maternal investment, and sex-speci®c resource allocation. Differences in maternal size were induced through manipulation of dietary protein in three treatment groups: low (10%), medium (15%) and high (20%) protein diets. Mothers on the 20% protein diet were signi®cantly larger than those on the lower protein diets, and produced signi®cantly more male than female offspring. Mothers on the lower protein diets did not produce sex-biased litters. There were no sex-speci®c differences in body size or body tissue composition of pups at birth or at weaning within each treatment group. At weaning, pups in the 20% protein treatment group had proportionately greater amounts of lean tissue and less body lipid reserves than pups in the 10% protein treatment group. Pups in the 20% protein treatment group were also larger, and had faster growth rates, than those in the 10% protein treatment group. Weaned pups in the 15% protein treatment group had the fastest growth rates and greatest energetic reserves of all of the treatment groups. Our results suggest that larger mothers on the high (20%) protein diet show differential investment in the sexes, not by allocating more resources to individuals of that sex, but by producing more male than female offspring.

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“…Body size and body tissue composition are known to be in¯uenced by dietary protein intake (Nakagawa & Masana, 1971;Cameron & Eshelman, 1996;Van Lunen & Cole, 1996).…”

Section: Introductionmentioning

confidence: 99%

Maternal dietary protein intake and sex‐specific investment in Mastomys coucha (Rodentia: Muridae)

Lamb

Aarde

2001

Journal of Zoology

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“…Therefore, an unintended variation in dietary AA levels can be excluded as a possible reason for the lack of performance response to the graded AA levels. Gatel & Grosjean (1992) and van Lunen & Cole (1996) stated that increasing the AA content of the diet led to a significant improvement of performance, but only up to a certain AA value. If the AA level was increased further on, the growth rate of the pigs would plateau at first and afterwards it would decrease.…”

Section: Discussionmentioning

confidence: 99%

“…The higher anabolic potential of boars in comparison with castrated male pigs (barrows) was reported , van Lunen & Cole 1996. Several authors stated that boars had a superior feed efficiency (Bonneau et al 1994, van Lunen & Cole 1996 due to a simultaneous higher weight gain and lower feed consumption (Dunshea et al 1993, Dunshea et al 2001. Moreover, the carcasses of boars were leaner than those of barrows (Dunshea et al 2001, Gispert et al 2010, Boler et al 2011).…”

Section: Introductionmentioning

confidence: 99%

“…In general, boars have a superior growth performance and a higher lean meat percentage compared with barrows and/or gilts (Andersson et al 1997). The higher anabolic potential of boars in comparison with castrated male pigs (barrows) was reported , van Lunen & Cole 1996. Several authors stated that boars had a superior feed efficiency (Bonneau et al 1994, van Lunen & Cole 1996 due to a simultaneous higher weight gain and lower feed consumption (Dunshea et al 1993, Dunshea et al 2001.…”

Section: Introductionmentioning

confidence: 99%

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Effect of varying supply of amino acids on nitrogen retention and growth performance of boars of different sire lines

Otten

Berk

Hagemann³

et al. 2013

Arch. Anim. Breed.

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Three diets with varying amino acid levels were fed in two nitrogen balance studies and two fattening experiments in order to determine the nitrogen retention and growth performance of boars of different sire lines. A total of 12 boars, 6 crossbreed boars sired by Piétrain boars (Study 1) and 6 crossbreed boars sired by Duroc boars (Study 2) were used in the nitrogen balance studies. Three diets with increasing content of amino acids were used; it was intended to use the same diets in nitrogen balance studies and the fattening experiments in order to compare the N retention and performance of boars during the growth period. The diets used in all experiments contained 13.4 MJ ME and 11.5 g lysine/kg (Diet 1), 13.2 g lysine/kg (Diet 2) and 14.9 g lysine/kg (Diet 3). The increase of the amino acid content of the diets seemed to have only a very minor impact on the nitrogen retention and on the growth performance of growing boars, whereas the location effect was found to be significant.

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“…Comparing the higher (18%) and the lower protein (16.4%) diets used respectively in Trial 1 and Trial 2 of the nitrogen balance experiment, even better protein deposition and growth performance were obtained after feeding pigs with the lower protein, threonine supplemented diet. This can be explained by the reduction of net energy in the high-protein diet due to excess AA deamination and N elimination (van Lunen and Cole, 1996).…”

Section: Nitrogen Balance Experimentsmentioning

confidence: 99%

Nitrogen retention and growth performance of 25 to 50 kg pigs fed diets of two protein levels and different ratios of digestible threonine to lysine

Buraczewska

Święch²,

Bellego³

2006

J. Anim. Feed Sci.

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The effect of supplementing threonine (Thr) to wheat-based diets containing about 18 (HP) and 16% (LP) protein was determined in pigs with high growth potential (barrows of synthetic line 990). Two basal, Thr deficient HP and LP diets of about 13 MJ ME/kg were used in digestibility experiment for determination of true ileal digestible amino acids content. Based on these results, four HP diets containing 0.86% true ileal digestible lysine and four Thr levels, and two LP diets with two Thr levels were formulated for N balance experiment (Trials 1 and 2, respectively) from the same ingredients and crystalline amino acids. In HP diets true digestible threonine:lysine ratios were 0.53, 0.60, 0.65 and 0.70, and in LP diets were of 0.53 and 0.65. Each trial was performed during 35 days on 6 pigs (per diet) in the range of body weight (BW) from about 25 to 50 kg with N balance at 35 and 45 kg of BW. In pigs fed on HP diets no response was found to increasing Thr, either in N retention or in pig performance. In contrast, in pigs fed the LP diets, Thr supplementation increased daily N retention from 19.2 to 20.7 g (P≤0.03) at 35 kg of BW. The effect of Thr supplementation on pig performance was not significant, however, it tended to increase average daily gain (774 vs 798 g) and lower feed/gain ratio (2.03 vs 1.97). The pigs fed LP diet excreted about 22% N less than the pigs fed on HP diet. In conclusion, growing pigs with high lean gain potential can optimize their nitrogen retention and growth performance on diets with protein level decreased to 16% and supplemented to contain about 0.86 and 0.56% of true ileal digestible lysine and threonine, respectively.

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The effect of lysine/digestible energy ratio on growth performance and nitrogen deposition of hybrid boars, gilts and castrated male pigs

Cited by 39 publications

References 19 publications

Maternal dietary protein intake and sex‐specific investment in Mastomys coucha (Rodentia: Muridae)

Maternal dietary protein intake and sex‐specific investment in Mastomys coucha (Rodentia: Muridae)

Effect of varying supply of amino acids on nitrogen retention and growth performance of boars of different sire lines

Nitrogen retention and growth performance of 25 to 50 kg pigs fed diets of two protein levels and different ratios of digestible threonine to lysine

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