Effect of methionine supplementation on the growth performance of rabbit

Yesmin, Sabina; Uddin, M. B.; Chacrabati, Rakhi; Al-Mamun, Mohammad

doi:10.3329/bjas.v42i1.15777

Cited by 7 publications

(7 citation statements)

References 6 publications

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“…These results agree with others previously obtained, where lysine, methionine or threonine supplementation did not affect the digestibility of DM, CP, and GE [ 32 , 33 , 34 ]. However, recent studies have observed that dietary supplementation with methionine from 2.4 to 4.9 g/kg [ 35 ] or from 5.6 to 8.3 g/kg [ 36 ] could increase the CTTAD of DM, CP and GE in growing rabbits. In any case, ref.…”

Section: Discussionmentioning

confidence: 99%

Do Growing Rabbits with a High Growth Rate Require Diets with High Levels of Essential Amino Acids? A Choice-Feeding Trial

Marín-Garcia

López-Luján

Ródenas

et al. 2021

Animals

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As a consequence of the genetic selection process in growing rabbits, there are currently fast-growing animals exhibiting an average daily gain that may exceed 45 g/d. The protein requirements of these animals, namely amino acid requirements, may differ from animals with low growth rates. The objective of this work was to evaluate growth performance, the coefficient of total tract apparent digestibility (CTTAD), the apparent ileal digestibility (AID) of amino acids and nutrient retention of fast-growing rabbits when they had access to a diet with high levels of amino acids and/or a diet formulated with current nutritional recommendations in a choice-feeding trial. To this end, two diets were formulated: the M diet following current nutritional recommendations for growing rabbits (including 8.1, 5.8 and 6.9 g/kg dry matter (DM) of total lysine, sulphur amino acids and threonine, respectively) and the H diet with higher levels of total lysine, sulphur amino acids and threonine (9.4, 6.6 and 7.8 g/kg DM, respectively). A total of 220 weaned rabbits, from a paternal line selected for the growth rate, had free access to the M diet, the H diet or both (MH) diets from 28 to 63 days of age. The CTTAD of DM, crude protein and gross energy from 49 to 53 days of age as well as the AID of amino acids of the diets at 63 days of age were determined. Protein, amino acids and energy retained in the empty body from 28 to 63 days of age were also registered. No significant differences in growth performance, CTTAD, AID and nutrient retention between dietary treatments were observed. However, animals fed the H diet showed a higher AID of cysteine (p < 0.05) and higher threonine retention (p < 0.05) compared to the M diet. As regards the choice-feeding trial, MH animals showed a higher feed intake of the M diet compared to the H diet (+8.61%; p < 0.001), and furthermore, more than 50% of the animals preferred the M diet throughout the experimental period (p < 0.05). Our results suggest that animals with high growth rates do not show significantly higher productive traits when fed the H diet compared to the M diet. As regards choice feeding, MH animals were capable of choosing their preferred diet, showing high intra-individual repeatability in preference for the M diet. It would be interesting to continue studying this behaviour of choice based on amino acid levels.

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Section: Discussionmentioning

confidence: 99%

Do Growing Rabbits with a High Growth Rate Require Diets with High Levels of Essential Amino Acids? A Choice-Feeding Trial

Marín-Garcia

López-Luján

Ródenas

et al. 2021

Animals

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“…Met supplementation significantly increased the digestibility of dry matter and crude protein in rabbits. The dietary addition of 0.35% methionine significantly increased the protein digestibility of growing rabbits [ 28 ]. The addition of Met in diet has a favorable effect on nitrogen balance, nitrogen retention coefficient, growth performances and feed efficiency of rabbits [ 29 ].…”

Section: Discussionmentioning

confidence: 99%

Dietary methionine supplementation to a low-protein diet improved hair follicle development of Angora rabbits

Zhao¹,

Wang²,

Wang³

et al. 2023

Anim Biosci

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Angora rabbits fed a low-protein diet exhibit decreased hair production performance. This study set out to evaluate the effects of methionine on hair properties and nitrogen metabolism in Angora rabbits fed a low-protein diet and investigated the gene expression related to hair follicle development to determine the possible molecular mechanism of methionine effects on hair follicle development. MethodsAn experiment was conducted to investigate the effects of DL-methionine addition on a low-protein diet on hair development in Angora rabbits. Angora rabbits were divided into 5 groups: fed a normal diet (control), fed a low-protein diet (LP), or fed an LP supplemented with 0.2%, 0.4%, or 0.6% DL-methionine (Met). ResultsThe results showed that rabbits in the LP group had lower wool yield than the control rabbits, but the addition of 0.4%-0.6% Met to LP attenuated these effects (P<0.05).

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“…The positive effect of Ca-Aminoplex on body weight gain of growing rabbits could be attributed to its content of essential amino acids, vitamin B complex and calcium. Growth rate of rabbits was markedly enhanced by addition of vitamin B6 (Gihan, 2017), lysine (Taboada, et al, 1994 andJing andLifu, 2010), methionine (Al-Homidan, 2001;Zhang andLi, 2010 andYesmin, et al, 2013). Also, Osman et al, (2007) indicated that, broiler chicks must be injected at least two times with Ca-Aminoplex to maximize its profitability.…”

Section: Effect Of Ca-aminoplexmentioning

confidence: 99%

EFFECT OF Ca-AMINOPLEX INJECTION ON GROWTH PERFORMANCE OF RABBITS

2019

Minia Journal of Agricultural Research and Development

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A total number of 64 New-Zealand white rabbits (32 males + 32 females) aged 6 weeks was randomly divided into 8 groups. Each group was subdivided into 8 replicates (4 males + 4 females) and housed individually in a wire cages located in a controlled environmental temperature house (20 -25 °C) throughout the experimental period (6-14 wks.). Rabbits were fed ad-libitum on high (17% CP) or low (15% CP) level of crude protein and were injected one, two or three times with Ca-Aminoplex at bi-weekly intervals. Ca-Aminoplex is a solution contains some essential Amino acids, vitamin B complex and calcium. The results revealed the following: -1-Rabbits fed on high protein level had higher (P≤ 0.01) body weight gain compared to those fed on low protein level during the entire experimental period (from 6-14 weeks old).2-Rabbits injected one, two or three times with Ca-Aminoplex were superior (P≤ 0.05) in body weight gain during all experimental period compared to those in the control treatment (not injected).3-Rabbits fed on the high protein level (17 % CP) consumed higher feed (P≤ 0.01) compared to those fed on low protein level (15% CP) all over the experimental period.4-Injection of growing rabbits two or three times with Ca-Aminoplex enhanced (P≤ 0.05) feed consumption all over the experimental period.5-Rabbits fed on high protein diet had superior (P≤ 0.05 or P≤ 0.01) cumulative feed conversion ratios compared to those fed on low protein diet all over the experimental period.6-Rabbits injected one, two or three times with Ca-Aminoplex had better (P≤ 0.05) cumulative feed conversion ratios than those uninjected (control) during all studied ages (from 6-14 wks. old).

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Effect of methionine supplementation on the growth performance of rabbit

Cited by 7 publications

References 6 publications

Do Growing Rabbits with a High Growth Rate Require Diets with High Levels of Essential Amino Acids? A Choice-Feeding Trial

Do Growing Rabbits with a High Growth Rate Require Diets with High Levels of Essential Amino Acids? A Choice-Feeding Trial

Dietary methionine supplementation to a low-protein diet improved hair follicle development of Angora rabbits

EFFECT OF Ca-AMINOPLEX INJECTION ON GROWTH PERFORMANCE OF RABBITS

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